Class: RSpec::Core::Configuration

Inherits:
Object
  • Object
show all
Includes:
Module.new, Hooks
Defined in:
lib/rspec/core/configuration.rb

Overview

Stores runtime configuration information.

Configuration options are loaded from ~/.rspec, .rspec, .rspec-local, command line switches, and the SPEC_OPTS environment variable (listed in lowest to highest precedence; for example, an option in ~/.rspec can be overridden by an option in .rspec-local).

Examples:

Standard settings

RSpec.configure do |c|
  c.drb          = true
  c.drb_port     = 1234
  c.default_path = 'behavior'
end

Hooks

RSpec.configure do |c|
  c.before(:suite)   { establish_connection }
  c.before(:example) {  :authorized }
  c.around(:example) { |ex| Database.transaction(&ex) }
end

See Also:

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Configuration

rubocop:disable Metrics/AbcSize rubocop:disable Metrics/MethodLength



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# File 'lib/rspec/core/configuration.rb', line 409

def initialize
  # rubocop:disable Style/GlobalVars
  @start_time = $_rspec_core_load_started_at || ::RSpec::Core::Time.now
  # rubocop:enable Style/GlobalVars
  @expectation_frameworks = []
  @include_modules = FilterableItemRepository::QueryOptimized.new(:any?)
  @extend_modules  = FilterableItemRepository::QueryOptimized.new(:any?)
  @prepend_modules = FilterableItemRepository::QueryOptimized.new(:any?)

  @before_suite_hooks = []
  @after_suite_hooks  = []

  @mock_framework = nil
  @files_or_directories_to_run = []
  @loaded_spec_files = Set.new
  @color = false
  @pattern = '**{,/*/**}/*_spec.rb'
  @exclude_pattern = ''
  @failure_exit_code = 1
  @spec_files_loaded = false

  @backtrace_formatter = BacktraceFormatter.new

  @default_path = 'spec'
  @project_source_dirs = %w[ spec lib app ]
  @deprecation_stream = $stderr
  @output_stream = $stdout
  @reporter = nil
  @reporter_buffer = nil
  @filter_manager = FilterManager.new
  @static_config_filter_manager = FilterManager.new
  @ordering_manager = Ordering::ConfigurationManager.new
  @preferred_options = {}
  @failure_color = :red
  @success_color = :green
  @pending_color = :yellow
  @default_color = :white
  @fixed_color = :blue
  @detail_color = :cyan
  @profile_examples = false
  @requires = []
  @libs = []
  @derived_metadata_blocks = FilterableItemRepository::QueryOptimized.new(:any?)
  @threadsafe = true
  @max_displayed_failure_line_count = 10
  @world = World::Null
  @shared_context_metadata_behavior = :trigger_inclusion

  define_built_in_hooks
end

Instance Attribute Details

#color ⇒ Boolean

Returns the configuration option for color, but should not be used to check if color is supported.

Returns:

  • (Boolean)

See Also:



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# File 'lib/rspec/core/configuration.rb', line 781

def color
  value_for(:color) { @color }
end

#default_color ⇒ void

The default output color.

Parameters:

  • color (Symbol) —

    defaults to :white but can be set to one of the following: [:black, :white, :red, :green, :yellow, :blue, :magenta, :cyan]



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# File 'lib/rspec/core/configuration.rb', line 297

add_setting :default_color

#default_path ⇒ void

Note:

Other scripts invoking rspec indirectly will ignore this setting.

Path to use if no path is provided to the rspec command (default: "spec"). Allows you to just type rspec instead of rspec spec to run all the examples in the spec directory.



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# File 'lib/rspec/core/configuration.rb', line 103

add_read_only_setting :default_path

#detail_color ⇒ void

Color used to print details.

Parameters:

  • color (Symbol) —

    defaults to :cyan but can be set to one of the following: [:black, :white, :red, :green, :yellow, :blue, :magenta, :cyan]



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# File 'lib/rspec/core/configuration.rb', line 311

add_setting :detail_color

#drb ⇒ void

Run examples over DRb (default: false). RSpec doesn't supply the DRb server, but you can use tools like spork.



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# File 'lib/rspec/core/configuration.rb', line 112

add_setting :drb

#drb_port ⇒ void

The drb_port (default: nil).



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# File 'lib/rspec/core/configuration.rb', line 116

add_setting :drb_port

#dry_run ⇒ void

Prints the formatter output of your suite without running any examples or hooks.



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# File 'lib/rspec/core/configuration.rb', line 196

add_setting :dry_run

#error_stream ⇒ void

Default: $stderr.



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# File 'lib/rspec/core/configuration.rb', line 120

add_setting :error_stream

#example_status_persistence_file_path ⇒ String #example_status_persistence_file_path=(value) ⇒ void

The file path to use for persisting example statuses. Necessary for the --only-failures and --next-failures CLI options.

Overloads:

  • #example_status_persistence_file_path ⇒ String

    Returns the file path.

    Returns:

    • (String) —

      the file path

  • #example_status_persistence_file_path=(value) ⇒ void

    Parameters:

    • value (String) —

      the file path



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# File 'lib/rspec/core/configuration.rb', line 169

define_reader :example_status_persistence_file_path

#exclude_pattern ⇒ void

Exclude files matching this pattern.



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# File 'lib/rspec/core/configuration.rb', line 241

define_reader :exclude_pattern

#fail_fast ⇒ void

If specified, indicates the number of failures required before cleaning up and exit (default: nil).



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# File 'lib/rspec/core/configuration.rb', line 191

add_setting :fail_fast

#failure_color ⇒ void

Color to use to indicate failure.

Parameters:

  • color (Symbol) —

    defaults to :red but can be set to one of the following: [:black, :white, :red, :green, :yellow, :blue, :magenta, :cyan]



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# File 'lib/rspec/core/configuration.rb', line 290

add_setting :failure_color

#failure_exit_code ⇒ void

The exit code to return if there are any failures (default: 1).



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# File 'lib/rspec/core/configuration.rb', line 200

add_setting :failure_exit_code

#files_to_run ⇒ Array

The spec files RSpec will run.

Returns:

  • (Array) —

    specified files about to run



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# File 'lib/rspec/core/configuration.rb', line 927

def files_to_run
  @files_to_run ||= get_files_to_run(@files_or_directories_to_run)
end

#fixed_color ⇒ void

Color used when a pending example is fixed.

Parameters:

  • color (Symbol) —

    defaults to :blue but can be set to one of the following: [:black, :white, :red, :green, :yellow, :blue, :magenta, :cyan]



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# File 'lib/rspec/core/configuration.rb', line 304

add_setting :fixed_color

#libs ⇒ void

Returns dirs that have been prepended to the load path by the -I command line option.



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# File 'lib/rspec/core/configuration.rb', line 209

define_reader :libs

#max_displayed_failure_line_count ⇒ void

Maximum count of failed source lines to display in the failure reports. (default 10).



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# File 'lib/rspec/core/configuration.rb', line 394

add_setting :max_displayed_failure_line_count

#only_failures ⇒ void (readonly) Also known as: only_failures?

Indicates if the --only-failures (or --next-failure) flag is being used.



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# File 'lib/rspec/core/configuration.rb', line 180

define_reader :only_failures

#output_stream ⇒ void

Determines where RSpec will send its output. Default: $stdout.



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# File 'lib/rspec/core/configuration.rb', line 214

define_reader :output_stream

#pattern ⇒ void

Load files matching this pattern (default: '**{,/*/**}/*_spec.rb').



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# File 'lib/rspec/core/configuration.rb', line 231

define_reader :pattern

#pending_color ⇒ void

Color to use to print pending examples.

Parameters:

  • color (Symbol) —

    defaults to :yellow but can be set to one of the following: [:black, :white, :red, :green, :yellow, :blue, :magenta, :cyan]



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# File 'lib/rspec/core/configuration.rb', line 283

add_setting :pending_color

#profile_examples ⇒ void

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Defaults profile_examples to 10 examples when @profile_examples is true.



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# File 'lib/rspec/core/configuration.rb', line 262

add_setting :profile_examples

#project_source_dirs ⇒ Array<String>

Specifies which directories contain the source code for your project. When a failure occurs, RSpec looks through the backtrace to find a a line of source to print. It first looks for a line coming from one of the project source directories so that, for example, it prints the expectation or assertion call rather than the source code from the expectation or assertion framework.

Returns:

  • (Array<String>) 


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# File 'lib/rspec/core/configuration.rb', line 257

add_setting :project_source_dirs

#requires ⇒ void

Indicates files configured to be required.



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# File 'lib/rspec/core/configuration.rb', line 204

define_reader :requires

#run_all_when_everything_filtered ⇒ void

Deprecated.

Use #filter_run_when_matching instead for the specific filters that you want to be ignored if none match.

Run all examples if none match the configured filters (default: false).



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# File 'lib/rspec/core/configuration.rb', line 269

add_setting :run_all_when_everything_filtered

#shared_context_metadata_behavior ⇒ :trigger_inclusion, :apply_to_host_groups #shared_context_metadata_behavior=(value) ⇒ void

Configures how RSpec treats metadata passed as part of a shared example group definition. For example, given this shared example group definition:

RSpec.shared_context "uses DB", :db => true do
  around(:example) do |ex|
    MyORM.transaction(:rollback => true, &ex)
  end
end

...there are two ways RSpec can treat the :db => true metadata, each of which has a corresponding config option:

  1. :trigger_inclusion: this shared context will be implicitly included in any groups (or examples) that have :db => true metadata.
  2. :apply_to_host_groups: the metadata will be inherited by the metadata hash of all host groups and examples.

:trigger_inclusion is the legacy behavior from before RSpec 3.5 but should be considered deprecated. Instead, you can explicitly include a group with include_context:

RSpec.describe "My model" do
  include_context "uses DB"
end

...or you can configure RSpec to include the context based on matching metadata using an API that mirrors configured module inclusion:

RSpec.configure do |rspec|
  rspec.include_context "uses DB", :db => true
end

:apply_to_host_groups is a new feature of RSpec 3.5 and will be the only supported behavior in RSpec 4.

Overloads:

  • #shared_context_metadata_behavior ⇒ :trigger_inclusion, :apply_to_host_groups

    Returns the configured behavior.

    Returns:

    • (:trigger_inclusion, :apply_to_host_groups) —

      the configured behavior

  • #shared_context_metadata_behavior=(value) ⇒ void

    Parameters:

    • value (:trigger_inclusion, :apply_to_host_groups) —

      sets the configured behavior



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# File 'lib/rspec/core/configuration.rb', line 370

define_reader :shared_context_metadata_behavior

#silence_filter_announcements ⇒ void

Don't print filter info i.e. "Run options: include :focus=>true" (default false).



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# File 'lib/rspec/core/configuration.rb', line 316

add_setting :silence_filter_announcements

#success_color ⇒ void

Color to use to indicate success.

Parameters:

  • color (Symbol) —

    defaults to :green but can be set to one of the following: [:black, :white, :red, :green, :yellow, :blue, :magenta, :cyan]



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# File 'lib/rspec/core/configuration.rb', line 276

add_setting :success_color

#threadsafe ⇒ void

Use threadsafe options where available. Currently this will place a mutex around memoized values such as let blocks.



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# File 'lib/rspec/core/configuration.rb', line 389

add_setting :threadsafe

Instance Method Details

#add_formatter(formatter) ⇒ void Also known as: formatter=

Adds a formatter to the formatters collection. formatter can be a string representing any of the built-in formatters (see built_in_formatter), or a custom formatter class.

Note

For internal purposes, add_formatter also accepts the name of a class and paths to use for output streams, but you should consider that a private api that may change at any time without notice.



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# File 'lib/rspec/core/configuration.rb', line 826

def add_formatter(formatter_to_use, *paths)
  paths << output_stream if paths.empty?
  formatter_loader.add formatter_to_use, *paths
end

#add_setting(name) ⇒ void #add_setting(name, opts) ⇒ void

Adds a custom setting to the RSpec.configuration object.

RSpec.configuration.add_setting :foo

Used internally and by extension frameworks like rspec-rails, so they can add config settings that are domain specific. For example:

RSpec.configure do |c|
  c.add_setting :use_transactional_fixtures,
    :default => true,
    :alias_with => :use_transactional_examples
end

add_setting creates three methods on the configuration object, a setter, a getter, and a predicate:

RSpec.configuration.foo=(value)
RSpec.configuration.foo
RSpec.configuration.foo? # Returns true if foo returns anything but nil or false.

Parameters:

  • opts (Hash) (defaults to: {}) —

    a customizable set of options

Options Hash (opts):

  • :default (Symbol) —

    Set a default value for the generated getter and predicate methods:

    add_setting(:foo, :default => "default value")
  • :alias_with (Symbol) —

    Use :alias_with to alias the setter, getter, and predicate to another name, or names:

    add_setting(:foo, :alias_with => :bar)
add_setting(:foo, :alias_with => [:bar, :baz])



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# File 'lib/rspec/core/configuration.rb', line 526

def add_setting(name, opts={})
  default = opts.delete(:default)
  (class << self; self; end).class_exec do
    add_setting(name, opts)
  end
  __send__("#{name}=", default) if default
end

#after(scope = nil, *meta, &block) ⇒ void Also known as: prepend_after

Defines a after hook. See Hooks#after for full docs.

This method differs from Hooks#after in only one way: it supports the :suite scope. Hooks with the :suite scope will be run once after the last example of the entire suite is executed.

See Also:



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# File 'lib/rspec/core/configuration.rb', line 1789

def after(scope=nil, *meta, &block)
  handle_suite_hook(scope, meta) do
    @after_suite_hooks.unshift Hooks::AfterHook.new(block, {})
  end || begin
    add_hook_to_existing_matching_groups(meta, scope) { |g| g.after(scope, *meta, &block) }
    super(scope, *meta, &block)
  end
end

#alias_example_group_to(new_name, *args) ⇒ void

Note:

The defined aliased will also be added to the top level (e.g. main and from within modules) if expose_dsl_globally is set to true.

Creates a method that defines an example group with the provided metadata. Can be used to define example group/metadata shortcuts.

Examples:

RSpec.configure do |config|
  config.alias_example_group_to :describe_model, :type => :model
end

shared_context_for "model tests", :type => :model do
  # define common model test helper methods, `let` declarations, etc
end

# This lets you do this:

RSpec.describe_model User do
end

# ... which is the equivalent of

RSpec.describe User, :type => :model do
end

See Also:



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# File 'lib/rspec/core/configuration.rb', line 1029

def alias_example_group_to(new_name, *args)
  extra_options = Metadata.build_hash_from(args)
  RSpec::Core::ExampleGroup.define_example_group_method(new_name, extra_options)
end

#alias_example_to(name, *args) ⇒ void

Note:

The specific example alias below (pending) is already defined for you.

Note:

Use with caution. This extends the language used in your specs, but does not add any additional documentation. We use this in RSpec to define methods like focus and xit, but we also add docs for those methods.

Creates a method that delegates to example including the submitted args. Used internally to add variants of example like pending:

Examples:

RSpec.configure do |config|
  config.alias_example_to :pending, :pending => true
end

# This lets you do this:

describe Thing do
  pending "does something" do
    thing = Thing.new
  end
end

# ... which is the equivalent of

describe Thing do
  it "does something", :pending => true do
    thing = Thing.new
  end
end

Parameters:

  • name (String) —

    example name alias

  • args (Array<Symbol>, Hash) —

    metadata for the generated example



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# File 'lib/rspec/core/configuration.rb', line 997

def alias_example_to(name, *args)
  extra_options = Metadata.build_hash_from(args)
  RSpec::Core::ExampleGroup.define_example_method(name, extra_options)
end

#alias_it_behaves_like_to(new_name, report_label = '') ⇒ void Also known as: alias_it_should_behave_like_to

Note:

Use with caution. This extends the language used in your specs, but does not add any additional documentation. We use this in RSpec to define it_should_behave_like (for backward compatibility), but we also add docs for that method.

Define an alias for it_should_behave_like that allows different language (like "it_has_behavior" or "it_behaves_like") to be employed when including shared examples.

Examples:

RSpec.configure do |config|
  config.alias_it_behaves_like_to(:it_has_behavior, 'has behavior:')
end

# allows the user to include a shared example group like:

describe Entity do
  it_has_behavior 'sortability' do
    let(:sortable) { Entity.new }
  end
end

# which is reported in the output as:
# Entity
#   has behavior: sortability
#     ...sortability examples here


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# File 'lib/rspec/core/configuration.rb', line 1060

def alias_it_behaves_like_to(new_name, report_label='')
  RSpec::Core::ExampleGroup.define_nested_shared_group_method(new_name, report_label)
end

#append_after(scope = nil, *meta, &block) ⇒ void

Adds block to the end of the list of after blocks in the same scope (:example, :context, or :suite), in contrast to #after, which adds the hook to the start of the list.

See Hooks#after for full after hook docs.

This method differs from Hooks#append_after in only one way: it supports the :suite scope. Hooks with the :suite scope will be run once after the last example of the entire suite is executed.

See Also:



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# File 'lib/rspec/core/configuration.rb', line 1812

def append_after(scope=nil, *meta, &block)
  handle_suite_hook(scope, meta) do
    @after_suite_hooks << Hooks::AfterHook.new(block, {})
  end || begin
    add_hook_to_existing_matching_groups(meta, scope) { |g| g.append_after(scope, *meta, &block) }
    super(scope, *meta, &block)
  end
end

#around(scope = nil, *meta, &block) ⇒ void

Registers block as an around hook.

See Hooks#around for full around hook docs.



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# File 'lib/rspec/core/configuration.rb', line 1824

def around(scope=nil, *meta, &block)
  add_hook_to_existing_matching_groups(meta, scope) { |g| g.around(scope, *meta, &block) }
  super(scope, *meta, &block)
end

#backtrace_exclusion_patterns ⇒ void

Regexps used to exclude lines from backtraces.

Excludes lines from ruby (and jruby) source, installed gems, anything in any "bin" directory, and any of the RSpec libs (outside gem installs) by default.

You can modify the list via the getter, or replace it with the setter.

To override this behaviour and display a full backtrace, use --backtrace on the command line, in a .rspec file, or in the rspec_options attribute of RSpec's rake task.



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# File 'lib/rspec/core/configuration.rb', line 562

def backtrace_exclusion_patterns
  @backtrace_formatter.exclusion_patterns
end

#backtrace_exclusion_patterns=(patterns) ⇒ void

Set regular expressions used to exclude lines in backtrace.

Parameters:

  • patterns (Regexp) —

    set the backtrace exlusion pattern



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# File 'lib/rspec/core/configuration.rb', line 568

def backtrace_exclusion_patterns=(patterns)
  @backtrace_formatter.exclusion_patterns = patterns
end

#backtrace_inclusion_patterns ⇒ void

Regexps used to include lines in backtraces.

Defaults to [Regexp.new Dir.getwd].

Lines that match an exclusion and an inclusion pattern will be included.

You can modify the list via the getter, or replace it with the setter.



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# File 'lib/rspec/core/configuration.rb', line 580

def backtrace_inclusion_patterns
  @backtrace_formatter.inclusion_patterns
end

#backtrace_inclusion_patterns=(patterns) ⇒ void

Set regular expressions used to include lines in backtrace.



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# File 'lib/rspec/core/configuration.rb', line 586

def backtrace_inclusion_patterns=(patterns)
  @backtrace_formatter.inclusion_patterns = patterns
end

#before(scope = nil, *meta, &block) ⇒ void Also known as: append_before

Defines a before hook. See Hooks#before for full docs.

This method differs from Hooks#before in only one way: it supports the :suite scope. Hooks with the :suite scope will be run once before the first example of the entire suite is executed.

See Also:



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# File 'lib/rspec/core/configuration.rb', line 1748

def before(scope=nil, *meta, &block)
  handle_suite_hook(scope, meta) do
    @before_suite_hooks << Hooks::BeforeHook.new(block, {})
  end || begin
    add_hook_to_existing_matching_groups(meta, scope) { |g| g.before(scope, *meta, &block) }
    super(scope, *meta, &block)
  end
end

#color_enabled?(output = output_stream) ⇒ Boolean

Check if color is enabled for a particular output.

Parameters:

  • output (IO) (defaults to: output_stream) —

    an output stream to use, defaults to the current output_stream

Returns:

  • (Boolean) 


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# File 'lib/rspec/core/configuration.rb', line 789

def color_enabled?(output=output_stream)
  output_to_tty?(output) && color
end

#default_formatter ⇒ void

The formatter that will be used if no formatter has been set. Defaults to 'progress'.



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# File 'lib/rspec/core/configuration.rb', line 834

def default_formatter
  formatter_loader.default_formatter
end

#default_formatter=(value) ⇒ void

Sets a fallback formatter to use if none other has been set.

Examples:


RSpec.configure do |rspec|
  rspec.default_formatter = 'doc'
end


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# File 'lib/rspec/core/configuration.rb', line 845

def default_formatter=(value)
  formatter_loader.default_formatter = value
end

#define_derived_metadata(*filters) {|metadata| ... } ⇒ void

Defines a callback that can assign derived metadata values.

Examples:

RSpec.configure do |config|
  # Tag all groups and examples in the spec/unit directory with
  # :type => :unit
  config.define_derived_metadata(:file_path => %r{/spec/unit/}) do |metadata|
    metadata[:type] = :unit
  end
end

Parameters:

  • filters (Array<Symbol>, Hash) —

    metadata filters that determine which example or group metadata hashes the callback will be triggered for. If none are given, the callback will be run against the metadata hashes of all groups and examples.

Yield Parameters:

  • metadata (Hash) —

    original metadata hash from an example or group. Mutate this in your block as needed.



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# File 'lib/rspec/core/configuration.rb', line 1692

def define_derived_metadata(*filters, &block)
  meta = Metadata.build_hash_from(filters, :warn_about_example_group_filtering)
  @derived_metadata_blocks.append(block, meta)
end

#deprecation_stream ⇒ IO, String

Determines where deprecation warnings are printed. Defaults to $stderr.

Returns:

  • (IO, String) —

    IO to write to or filename to write to



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# File 'lib/rspec/core/configuration.rb', line 145

define_reader :deprecation_stream

#deprecation_stream=(value) ⇒ void

Determines where deprecation warnings are printed.

Parameters:

  • value (IO, String) —

    IO to write to or filename to write to



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# File 'lib/rspec/core/configuration.rb', line 149

def deprecation_stream=(value)
  if @reporter && !value.equal?(@deprecation_stream)
    warn "RSpec's reporter has already been initialized with " \
      "#{deprecation_stream.inspect} as the deprecation stream, so your change to "\
      "`deprecation_stream` will be ignored. You should configure it earlier for " \
      "it to take effect, or use the `--deprecation-out` CLI option. " \
      "(Called from #{CallerFilter.first_non_rspec_line})"
  else
    @deprecation_stream = value
  end
end

#disable_monkey_patching! ⇒ void

Note:

It configures rspec-mocks and rspec-expectations only if the user is using those (either explicitly or implicitly by not setting mock_with or expect_with to anything else).

Note:

If the user uses this options with mock_with :mocha (or similiar) they will still have monkey patching active in their test environment from mocha.

Enables zero monkey patching mode for RSpec. It removes monkey patching of the top-level DSL methods (describe, shared_examples_for, etc) onto main and Module, instead requiring you to prefix these methods with RSpec.. It enables expect-only syntax for rspec-mocks and rspec-expectations. It simply disables monkey patching on whatever pieces of RSpec the user is using.

Examples:


# It disables all monkey patching.
RSpec.configure do |config|
  config.disable_monkey_patching!
end

# Is an equivalent to
RSpec.configure do |config|
  config.expose_dsl_globally = false

  config.mock_with :rspec do |mocks|
    mocks.syntax = :expect
    mocks.patch_marshal_to_support_partial_doubles = false
  end

  config.mock_with :rspec do |expectations|
    expectations.syntax = :expect
  end
end


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# File 'lib/rspec/core/configuration.rb', line 1665

def disable_monkey_patching!
  self.expose_dsl_globally = false
  self.disable_monkey_patching = true
  conditionally_disable_mocks_monkey_patching
  conditionally_disable_expectations_monkey_patching
end

#exclusion_filter ⇒ void

Returns the exclusion_filter. If none has been set, returns an empty hash.



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# File 'lib/rspec/core/configuration.rb', line 1189

def exclusion_filter
  filter_manager.exclusions
end

#exclusion_filter=(filter) ⇒ void

Clears and reassigns the exclusion_filter. Set to nil if you don't want any exclusion filter at all.

Warning

This overrides any exclusion filters/tags set on the command line or in configuration files.



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# File 'lib/rspec/core/configuration.rb', line 1182

def exclusion_filter=(filter)
  meta = Metadata.build_hash_from([filter], :warn_about_example_group_filtering)
  filter_manager.exclude_only meta
end

#expect_with(*frameworks) ⇒ void

Sets the expectation framework module(s) to be included in each example group.

frameworks can be :rspec, :test_unit, :minitest, a custom module, or any combination thereof:

config.expect_with :rspec
config.expect_with :test_unit
config.expect_with :minitest
config.expect_with :rspec, :minitest
config.expect_with OtherExpectationFramework

RSpec will translate :rspec, :minitest, and :test_unit into the appropriate modules.

Configuration

If the module responds to configuration, expect_with will yield the configuration object if given a block:

config.expect_with OtherExpectationFramework do |custom_config|
  custom_config.custom_setting = true
end



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# File 'lib/rspec/core/configuration.rb', line 722

def expect_with(*frameworks)
  modules = frameworks.map do |framework|
    case framework
    when Module
      framework
    when :rspec
      require 'rspec/expectations'

      # Tag this exception class so our exception formatting logic knows
      # that it satisfies the `MultipleExceptionError` interface.
      ::RSpec::Expectations::MultipleExpectationsNotMetError.__send__(
        :include, MultipleExceptionError::InterfaceTag
      )

      ::RSpec::Matchers
    when :test_unit
      require 'rspec/core/test_unit_assertions_adapter'
      ::RSpec::Core::TestUnitAssertionsAdapter
    when :minitest
      require 'rspec/core/minitest_assertions_adapter'
      ::RSpec::Core::MinitestAssertionsAdapter
    else
      raise ArgumentError, "#{framework.inspect} is not supported"
    end
  end

  if (modules - @expectation_frameworks).any?
    assert_no_example_groups_defined(:expect_with)
  end

  if block_given?
    raise "expect_with only accepts a block with a single argument. " \
          "Call expect_with #{modules.length} times, " \
          "once with each argument, instead." if modules.length > 1
    raise "#{modules.first} must respond to `configuration` so that " \
          "expect_with can yield it." unless modules.first.respond_to?(:configuration)
    yield modules.first.configuration
  end

  @expectation_frameworks.push(*modules)
end

#expectation_framework=(framework) ⇒ void

Delegates to expect_with(framework).



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# File 'lib/rspec/core/configuration.rb', line 695

def expectation_framework=(framework)
  expect_with(framework)
end

#expectation_frameworks ⇒ void

Returns the configured expectation framework adapter module(s)



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# File 'lib/rspec/core/configuration.rb', line 683

def expectation_frameworks
  if @expectation_frameworks.empty?
    begin
      expect_with :rspec
    rescue LoadError
      expect_with Module.new
    end
  end
  @expectation_frameworks
end

#expose_current_running_example_as(method_name) ⇒ void

Exposes the current running example via the named helper method. RSpec 2.x exposed this via example, but in RSpec 3.0, the example is instead exposed via an arg yielded to it, before, let, etc. However, some extension gems (such as Capybara) depend on the RSpec 2.x's example method, so this config option can be used to maintain compatibility.

Examples:


RSpec.configure do |rspec|
  rspec.expose_current_running_example_as :example
end

describe MyClass do
  before do
    # `example` can be used here because of the above config.
    do_something if example.metadata[:type] == "foo"
  end
end

Parameters:

  • method_name (Symbol) —

    the name of the helper method



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# File 'lib/rspec/core/configuration.rb', line 1603

def expose_current_running_example_as(method_name)
  ExposeCurrentExample.module_exec do
    extend RSpec::SharedContext
    let(method_name) { |ex| ex }
  end

  include ExposeCurrentExample
end

#expose_dsl_globally=(value) ⇒ void

Use this to expose the core RSpec DSL via Module and the main object. It will be set automatically but you can override it to remove the DSL. Default: true



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# File 'lib/rspec/core/configuration.rb', line 132

def expose_dsl_globally=(value)
  if value
    Core::DSL.expose_globally!
    Core::SharedExampleGroup::TopLevelDSL.expose_globally!
  else
    Core::DSL.remove_globally!
    Core::SharedExampleGroup::TopLevelDSL.remove_globally!
  end
end

#expose_dsl_globally? ⇒ Boolean

Indicates if the DSL has been exposed off of modules and main. Default: true

Returns:

  • (Boolean) 


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# File 'lib/rspec/core/configuration.rb', line 124

def expose_dsl_globally?
  Core::DSL.exposed_globally?
end

#extend(mod, *filters) ⇒ void

Tells RSpec to extend example groups with mod. Methods defined in mod are exposed to example groups (not examples). Use filters to constrain the groups to extend.

Similar to include, but behavior is added to example groups, which are classes, rather than the examples, which are instances of those classes.

Examples:


module UiHelpers
  def run_in_browser
    # ...
  end
end

RSpec.configure do |config|
  config.extend(UiHelpers, :type => :request)
end

describe "edit profile", :type => :request do
  run_in_browser

  it "does stuff in the client" do
    # ...
  end
end

See Also:



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# File 'lib/rspec/core/configuration.rb', line 1312

def extend(mod, *filters)
  define_mixed_in_module(mod, filters, @extend_modules, :extend) do |group|
    safe_extend(mod, group)
  end
end

#filter_gems_from_backtrace(*gem_names) ⇒ void

Note:

The patterns this adds will match the named gems in their common locations (e.g. system gems, vendored with bundler, installed as a :git dependency with bundler, etc) but is not guaranteed to work for all possible gem locations. For example, if you have the gem source in a directory with a completely unrelated name, and use bundler's :path option, this will not filter it.

Adds #backtrace_exclusion_patterns that will filter lines from the named gems from backtraces.

Examples:

RSpec.configure do |config|
  config.filter_gems_from_backtrace "rack", "rake"
end

Parameters:

  • gem_names (Array<String>) —

    Names of the gems to filter



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# File 'lib/rspec/core/configuration.rb', line 606

def filter_gems_from_backtrace(*gem_names)
  gem_names.each do |name|
    @backtrace_formatter.filter_gem(name)
  end
end

#filter_run_excluding(*args) ⇒ void

Adds key/value pairs to the exclusion_filter. If args includes any symbols that are not part of the hash, each symbol is treated as a key in the hash with the value true.

Note

Filters set using this method can be overridden from the command line or config files (e.g. .rspec).

Examples:

# Given this declaration.
describe "something", :foo => 'bar' do
  # ...
end

# Any of the following will exclude that group.
config.filter_run_excluding :foo => 'bar'
config.filter_run_excluding :foo => /^ba/
config.filter_run_excluding :foo => lambda {|v| v == 'bar'}
config.filter_run_excluding :foo => lambda {|v,m| m[:foo] == 'bar'}

# Given a proc with an arity of 1, the lambda is passed the value
# related to the key, e.g.
config.filter_run_excluding :foo => lambda {|v| v == 'bar'}

# Given a proc with an arity of 2, the lambda is passed the value
# related to the key, and the metadata itself e.g.
config.filter_run_excluding :foo => lambda {|v,m| m[:foo] == 'bar'}

filter_run_excluding :foo # same as filter_run_excluding :foo => true


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# File 'lib/rspec/core/configuration.rb', line 1169

def filter_run_excluding(*args)
  meta = Metadata.build_hash_from(args, :warn_about_example_group_filtering)
  filter_manager.exclude_with_low_priority meta
  static_config_filter_manager.exclude_with_low_priority Metadata.deep_hash_dup(meta)
end

#filter_run_including(*args) ⇒ void Also known as: filter_run

Adds key/value pairs to the inclusion_filter. If args includes any symbols that are not part of the hash, each symbol is treated as a key in the hash with the value true.

Note

Filters set using this method can be overridden from the command line or config files (e.g. .rspec).

Examples:

# Given this declaration.
describe "something", :foo => 'bar' do
  # ...
end

# Any of the following will include that group.
config.filter_run_including :foo => 'bar'
config.filter_run_including :foo => /^ba/
config.filter_run_including :foo => lambda {|v| v == 'bar'}
config.filter_run_including :foo => lambda {|v,m| m[:foo] == 'bar'}

# Given a proc with an arity of 1, the lambda is passed the value
# related to the key, e.g.
config.filter_run_including :foo => lambda {|v| v == 'bar'}

# Given a proc with an arity of 2, the lambda is passed the value
# related to the key, and the metadata itself e.g.
config.filter_run_including :foo => lambda {|v,m| m[:foo] == 'bar'}

filter_run_including :foo # same as filter_run_including :foo => true


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# File 'lib/rspec/core/configuration.rb', line 1095

def filter_run_including(*args)
  meta = Metadata.build_hash_from(args, :warn_about_example_group_filtering)
  filter_manager.include_with_low_priority meta
  static_config_filter_manager.include_with_low_priority Metadata.deep_hash_dup(meta)
end

#filter_run_when_matching(*args) ⇒ void

Applies the provided filter only if any of examples match, in constrast to #filter_run, which always applies even if no examples match, in which case no examples will be run. This allows you to leave configured filters in place that are intended only for temporary use. The most common example is focus filtering: config.filter_run_when_matching :focus. With that configured, you can temporarily focus an example or group by tagging it with :focus metadata, or prefixing it with an f (as in fdescribe, fcontext and fit) since those are aliases for describe/context/it with :focus metadata.



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# File 'lib/rspec/core/configuration.rb', line 1111

def filter_run_when_matching(*args)
  when_first_matching_example_defined(*args) do
    filter_run(*args)
  end
end

#format_docstrings(&block) ⇒ void

Formats the docstring output using the block provided.

Examples:

# This will strip the descriptions of both examples and example
# groups.
RSpec.configure do |config|
  config.format_docstrings { |s| s.strip }
end


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# File 'lib/rspec/core/configuration.rb', line 1453

def format_docstrings(&block)
  @format_docstrings_block = block_given? ? block : DEFAULT_FORMATTER
end

#formatters ⇒ Array

Returns a duplicate of the formatters currently loaded in the FormatterLoader for introspection.

Note as this is a duplicate, any mutations will be disregarded.

Returns:

  • (Array) —

    the formatters currently loaded



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# File 'lib/rspec/core/configuration.rb', line 855

def formatters
  formatter_loader.formatters.dup
end

#full_backtrace=(true_or_false) ⇒ void

Toggle full backtrace.



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# File 'lib/rspec/core/configuration.rb', line 772

def full_backtrace=(true_or_false)
  @backtrace_formatter.full_backtrace = true_or_false
end

#full_backtrace? ⇒ Boolean

Check if full backtrace is enabled.

Returns:

  • (Boolean) —

    is full backtrace enabled



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# File 'lib/rspec/core/configuration.rb', line 766

def full_backtrace?
  @backtrace_formatter.full_backtrace?
end

#full_description ⇒ Array

Returns full description filter.

Returns:

  • (Array) —

    full description filter



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# File 'lib/rspec/core/configuration.rb', line 811

def full_description
  filter.fetch :full_description, nil
end

#full_description=(description) ⇒ void

Run examples matching on description in all files to run.

Parameters:

  • description (String, Regexp) —

    the pattern to filter on



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# File 'lib/rspec/core/configuration.rb', line 806

def full_description=(description)
  filter_run :full_description => Regexp.union(*Array(description).map { |d| Regexp.new(d) })
end

#include(mod, *filters) ⇒ void

Note:

Filtered module inclusions can also be applied to individual examples that have matching metadata. Just like Ruby's object model is that every object has a singleton class which has only a single instance, RSpec's model is that every example has a singleton example group containing just the one example.

Tells RSpec to include mod in example groups. Methods defined in mod are exposed to examples (not example groups). Use filters to constrain the groups or examples in which to include the module.

Examples:


module AuthenticationHelpers
  def (user)
    # ...
  end
end

module UserHelpers
  def users(username)
    # ...
  end
end

RSpec.configure do |config|
  config.include(UserHelpers) # included in all groups
  config.include(AuthenticationHelpers, :type => :request)
end

describe "edit profile", :type => :request do
  it "can be viewed by owning user" do
     users(:jdoe)
    get "/profiles/jdoe"
    assert_select ".username", :text => 'jdoe'
  end
end

See Also:



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# File 'lib/rspec/core/configuration.rb', line 1234

def include(mod, *filters)
  define_mixed_in_module(mod, filters, @include_modules, :include) do |group|
    safe_include(mod, group)
  end
end

#include_context(shared_group_name, *filters) ⇒ void

Note:

Filtered context inclusions can also be applied to individual examples that have matching metadata. Just like Ruby's object model is that every object has a singleton class which has only a single instance, RSpec's model is that every example has a singleton example group containing just the one example.

Tells RSpec to include the named shared example group in example groups. Use filters to constrain the groups or examples in which to include the example group.

Examples:


RSpec.shared_context "example users" do
  let(:admin_user) { create_user(:admin) }
  let(:guest_user) { create_user(:guest) }
end

RSpec.configure do |config|
  config.include_context "example users", :type => :request
end

RSpec.describe "The admin page", :type => :request do
  it "can be viewed by admins" do
     admin_user
    get "/admin"
    expect(response).to be_ok
  end

  it "cannot be viewed by guests" do
     guest_user
    get "/admin"
    expect(response).to be_forbidden
  end
end

See Also:



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# File 'lib/rspec/core/configuration.rb', line 1277

def include_context(shared_group_name, *filters)
  shared_module = world.shared_example_group_registry.find([:main], shared_group_name)
  include shared_module, *filters
end

#inclusion_filter ⇒ void Also known as: filter

Returns the inclusion_filter. If none has been set, returns an empty hash.



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# File 'lib/rspec/core/configuration.rb', line 1133

def inclusion_filter
  filter_manager.inclusions
end

#inclusion_filter=(filter) ⇒ void Also known as: filter=

Clears and reassigns the inclusion_filter. Set to nil if you don't want any inclusion filter at all.

Warning

This overrides any inclusion filters/tags set on the command line or in configuration files.



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# File 'lib/rspec/core/configuration.rb', line 1124

def inclusion_filter=(filter)
  meta = Metadata.build_hash_from([filter], :warn_about_example_group_filtering)
  filter_manager.include_only meta
end

#mock_framework ⇒ void

Returns the configured mock framework adapter module.



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# File 'lib/rspec/core/configuration.rb', line 535

def mock_framework
  if @mock_framework.nil?
    begin
      mock_with :rspec
    rescue LoadError
      mock_with :nothing
    end
  end
  @mock_framework
end

#mock_framework=(framework) ⇒ void

Delegates to mock_framework=(framework).



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# File 'lib/rspec/core/configuration.rb', line 547

def mock_framework=(framework)
  mock_with framework
end

#mock_with(framework) ⇒ void

Sets the mock framework adapter module.

framework can be a Symbol or a Module.

Given any of :rspec, :mocha, :flexmock, or :rr, configures the named framework.

Given :nothing, configures no framework. Use this if you don't use any mocking framework to save a little bit of overhead.

Given a Module, includes that module in every example group. The module should adhere to RSpec's mock framework adapter API:

setup_mocks_for_rspec
  - called before each example

verify_mocks_for_rspec
  - called after each example if the example hasn't yet failed.
    Framework should raise an exception when expectations fail

teardown_mocks_for_rspec
  - called after verify_mocks_for_rspec (even if there are errors)

If the module responds to configuration and mock_with receives a block, it will yield the configuration object to the block e.g.

config.mock_with OtherMockFrameworkAdapter do |mod_config|
  mod_config.custom_setting = true
end



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# File 'lib/rspec/core/configuration.rb', line 650

def mock_with(framework)
  framework_module =
    if framework.is_a?(Module)
      framework
    else
      const_name = MOCKING_ADAPTERS.fetch(framework) do
        raise ArgumentError,
              "Unknown mocking framework: #{framework.inspect}. " \
              "Pass a module or one of #{MOCKING_ADAPTERS.keys.inspect}"
      end

      RSpec::Support.require_rspec_core "mocking_adapters/#{const_name.to_s.downcase}"
      RSpec::Core::MockingAdapters.const_get(const_name)
    end

  new_name, old_name = [framework_module, @mock_framework].map do |mod|
    mod.respond_to?(:framework_name) ? mod.framework_name : :unnamed
  end

  unless new_name == old_name
    assert_no_example_groups_defined(:mock_framework)
  end

  if block_given?
    raise "#{framework_module} must respond to `configuration` so that " \
          "mock_with can yield it." unless framework_module.respond_to?(:configuration)
    yield framework_module.configuration
  end

  @mock_framework = framework_module
end

#on_example_group_definition(&block) ⇒ void

Invokes block before defining an example group



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# File 'lib/rspec/core/configuration.rb', line 1850

def on_example_group_definition(&block)
  on_example_group_definition_callbacks << block
end

#on_example_group_definition_callbacks ⇒ void

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns an array of blocks to call before defining an example group



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# File 'lib/rspec/core/configuration.rb', line 1856

def on_example_group_definition_callbacks
  @on_example_group_definition_callbacks ||= []
end

#order= ⇒ void

Sets the default global ordering strategy. By default this can be one of :defined, :random, but is customizable through the register_ordering API. If order is set to 'rand:<seed>', the seed will also be set.

See Also:



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# File 'lib/rspec/core/configuration.rb', line 1500

delegate_to_ordering_manager :order=

#prepend(mod, *filters) ⇒ void

Tells RSpec to prepend example groups with mod. Methods defined in mod are exposed to examples (not example groups). Use filters to constrain the groups in which to prepend the module.

Similar to include, but module is included before the example group's class in the ancestor chain.

Examples:


module OverrideMod
  def override_me
    "overridden"
  end
end

RSpec.configure do |config|
  config.prepend(OverrideMod, :method => :prepend)
end

describe "overriding example's class", :method => :prepend do
  it "finds the user" do
    self.class.class_eval do
      def override_me
      end
    end
    override_me # => "overridden"
    # ...
  end
end

See Also:



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# File 'lib/rspec/core/configuration.rb', line 1351

def prepend(mod, *filters)
  define_mixed_in_module(mod, filters, @prepend_modules, :prepend) do |group|
    safe_prepend(mod, group)
  end
end

#prepend_before(scope = nil, *meta, &block) ⇒ void

Adds block to the start of the list of before blocks in the same scope (:example, :context, or :suite), in contrast to #before, which adds the hook to the end of the list.

See Hooks#before for full before hook docs.

This method differs from Hooks#prepend_before in only one way: it supports the :suite scope. Hooks with the :suite scope will be run once before the first example of the entire suite is executed.

See Also:



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# File 'lib/rspec/core/configuration.rb', line 1771

def prepend_before(scope=nil, *meta, &block)
  handle_suite_hook(scope, meta) do
    @before_suite_hooks.unshift Hooks::BeforeHook.new(block, {})
  end || begin
    add_hook_to_existing_matching_groups(meta, scope) { |g| g.prepend_before(scope, *meta, &block) }
    super(scope, *meta, &block)
  end
end

#raise_errors_for_deprecations! ⇒ void

Turns deprecation warnings into errors, in order to surface the full backtrace of the call site. This can be useful when you need more context to address a deprecation than the single-line call site normally provided.

Examples:


RSpec.configure do |rspec|
  rspec.raise_errors_for_deprecations!
end


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# File 'lib/rspec/core/configuration.rb', line 1625

def raise_errors_for_deprecations!
  self.deprecation_stream = Formatters::DeprecationFormatter::RaiseErrorStream.new
end

#raise_on_warning=(value) ⇒ void

Turns warnings into errors. This can be useful when you want RSpec to run in a 'strict' no warning situation.

Examples:


RSpec.configure do |rspec|
  rspec.raise_on_warning = true
end


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# File 'lib/rspec/core/configuration.rb', line 1573

def raise_on_warning=(value)
  if value
    RSpec::Support.warning_notifier = RAISE_ERROR_WARNING_NOTIFIER
  else
    RSpec::Support.warning_notifier = RSpec::Support::DEFAULT_WARNING_NOTIFIER
  end
end

#register_ordering {|list| ... } ⇒ void

Note:

Pass the symbol :global to set the ordering strategy that will be used to order the top-level example groups and any example groups that do not have declared :order metadata.

Registers a named ordering strategy that can later be used to order an example group's subgroups by adding :order => <name> metadata to the example group.

Examples:

RSpec.configure do |rspec|
  rspec.register_ordering :reverse do |list|
    list.reverse
  end
end

RSpec.describe 'MyClass', :order => :reverse do
  # ...
end
RSpec.configure do |rspec|
  rspec.register_ordering :global do |examples|
    acceptance, other = examples.partition do |example|
      example.metadata[:type] == :acceptance
    end
    other + acceptance
  end
end

RSpec.describe 'MyClass', :type => :acceptance do
  # will run last
end

RSpec.describe 'MyClass' do
  # will run first
end

Parameters:

  • name (Symbol) —

    The name of the ordering.

Yields:

  • Block that will order the given examples or example groups

Yield Parameters:

Yield Returns:



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# File 'lib/rspec/core/configuration.rb', line 1547

delegate_to_ordering_manager :register_ordering

#reporter ⇒ RSpec::Core::Reporter

Returns the currently configured reporter.

Returns:



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# File 'lib/rspec/core/configuration.rb', line 887

def reporter
  # @reporter_buffer should only ever be set in this method to cover
  # initialization of @reporter.
  @reporter_buffer || @reporter ||=
    begin
      @reporter_buffer = DeprecationReporterBuffer.new
      formatter_loader.setup_default output_stream, deprecation_stream
      @reporter_buffer.play_onto(formatter_loader.reporter)
      @reporter_buffer = nil
      formatter_loader.reporter
    end
end

#seed ⇒ void

Seed for random ordering (default: generated randomly each run).

When you run specs with --order random, RSpec generates a random seed for the randomization and prints it to the output_stream (assuming you're using RSpec's built-in formatters). If you discover an ordering dependency (i.e. examples fail intermittently depending on order), set this (on Configuration or on the command line with --seed) to run using the same seed while you debug the issue.

We recommend, actually, that you use the command line approach so you don't accidentally leave the seed encoded.



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# File 'lib/rspec/core/configuration.rb', line 1490

delegate_to_ordering_manager :seed

#seed= ⇒ void

Sets the seed value and sets the default global ordering to random.



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# File 'lib/rspec/core/configuration.rb', line 1476

delegate_to_ordering_manager :seed=

#treat_symbols_as_metadata_keys_with_true_values=(_value) ⇒ void

Deprecated. This config option was added in RSpec 2 to pave the way for this being the default behavior in RSpec 3. Now this option is a no-op.



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# File 'lib/rspec/core/configuration.rb', line 321

def treat_symbols_as_metadata_keys_with_true_values=(_value)
  RSpec.deprecate(
    "RSpec::Core::Configuration#treat_symbols_as_metadata_keys_with_true_values=",
    :message => "RSpec::Core::Configuration#treat_symbols_as_metadata_keys_with_true_values= " \
                "is deprecated, it is now set to true as default and " \
                "setting it to false has no effect."
  )
end

#warnings=(value) ⇒ void

Set Ruby warnings on or off.



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# File 'lib/rspec/core/configuration.rb', line 1553

def warnings=(value)
  $VERBOSE = !!value
end

#warnings? ⇒ Boolean

Returns Whether or not ruby warnings are enabled.

Returns:

  • (Boolean) —

    Whether or not ruby warnings are enabled.



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# File 'lib/rspec/core/configuration.rb', line 1558

def warnings?
  $VERBOSE
end

#when_first_matching_example_defined(*filters, &block) ⇒ void

Defines a callback that runs after the first example with matching metadata is defined. If no examples are defined with matching metadata, it will not get called at all.

This can be used to ensure some setup is performed (such as bootstrapping a DB or loading a specific file that adds significantly to the boot time) if needed (as indicated by the presence of an example with matching metadata) but avoided otherwise.

Examples:

RSpec.configure do |config|
  config.when_first_matching_example_defined(:db) do
    # Load a support file that does some heavyweight setup,
    # including bootstrapping the DB, but only if we have loaded
    # any examples tagged with `:db`.
    require 'support/db'
  end
end


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# File 'lib/rspec/core/configuration.rb', line 1715

def when_first_matching_example_defined(*filters, &block)
  specified_meta = Metadata.build_hash_from(filters, :warn_about_example_group_filtering)

  callback = lambda do |example_or_group_meta|
    # Example groups do not have `:example_group` metadata
    # (instead they have `:parent_example_group` metadata).
    return unless example_or_group_meta.key?(:example_group)

    # Ensure the callback only fires once.
    @derived_metadata_blocks.items_for(specified_meta).delete(callback)

    block.call
  end

  @derived_metadata_blocks.append(callback, specified_meta)
end