Class: RSpec::ShellCommand::Matchers::Output

Inherits:
Base
  • Object
show all
Includes:
Matchers::Composable
Defined in:
lib/rspec/shell_command/matchers/output.rb

Overview

Provide implementation of out matcher

Check whether given command output expected string or pattern

to stdout or stderr

Instance Method Summary collapse

Methods inherited from Base

#actual_status, #actual_status_message, #make_expected_and_got_message

Constructor Details

#initialize(expected, orig) ⇒ Output

Returns a new instance of Output.



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# File 'lib/rspec/shell_command/matchers/output.rb', line 14

def initialize(expected, orig)
  @expected = expected
  @orig = orig
end

Instance Method Details

#description ⇒ Object 



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# File 'lib/rspec/shell_command/matchers/output.rb', line 66

def description
  if @command
    "output #{description_of(@expected)} to #{@stream}"
  else
    "output to #{@stream}"
  end
end

#failure_message ⇒ Object 



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# File 'lib/rspec/shell_command/matchers/output.rb', line 34

def failure_message
  if @actual_is_command
    "expect command to #{description}"
  else
    @orig.failure_message
  end
end

#failure_message_when_negated ⇒ Object 



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# File 'lib/rspec/shell_command/matchers/output.rb', line 42

def failure_message_when_negated
  if @actual_is_command
    "expect command to not #{description}"
  else
    @orig.failure_message_when_negated
  end
end

#matches?(actual) ⇒ Boolean

Returns:



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# File 'lib/rspec/shell_command/matchers/output.rb', line 19

def matches?(actual)
  @actual_is_command = actual.is_a?(ShellCommand)
  return @orig.matches?(actual) unless @actual_is_command

  @actual = actual.execute

  return false unless @stream == :stdout || @stream == :stderr

  if @expected
    values_match?(@expected, actual_output)
  else
    !actual_output.empty?
  end
end

#supports_block_expectations? ⇒ Boolean

Returns:



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# File 'lib/rspec/shell_command/matchers/output.rb', line 50

def supports_block_expectations?
  true
end

#to_stderr ⇒ Object 



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# File 'lib/rspec/shell_command/matchers/output.rb', line 60

def to_stderr
  @stream = :stderr
  @orig.to_stderr
  self
end

#to_stdout ⇒ Object 



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# File 'lib/rspec/shell_command/matchers/output.rb', line 54

def to_stdout
  @stream = :stdout
  @orig.to_stdout
  self
end