Module: Opal::RSpec::Compatibility

Defined in:
opal/opal/rspec/fixes/opal/compatibility.rb

Defined Under Namespace

Modules: ModuleCase, ModuleCase2, ModuleConstTest, MultModSuper1, MultModSuper2, MultModSuper3 Classes: ConstTest, ModuleCase3, MultModSuperClass

Constant Summary collapse

TEST_CLASS = 
Class.new do
  class ClassWithinClassNewWorks
  end

  def self.does_class_exist?
    Compatibility.const_defined? :ClassWithinClassNewWorks
  end
end

Class Method Summary collapse

Class Method Details

.and_works_with_lhs_nil? ⇒ Boolean

https://github.com/opal/opal/issues/1090, fixed in Opal 0.9

Returns:

  • (Boolean) 


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# File 'opal/opal/rspec/fixes/opal/compatibility.rb', line 53

def self.and_works_with_lhs_nil?
  value = nil
  (value && nil) == nil
end

.class_descendant_of_self_fixed? ⇒ Boolean

https://github.com/opal/opal/issues/1077, fixed in Opal 0.9

Returns:

  • (Boolean) 


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# File 'opal/opal/rspec/fixes/opal/compatibility.rb', line 48

def self.class_descendant_of_self_fixed?
  !(String < String)
end

.class_within_class_new_works? ⇒ Boolean

https://github.com/opal/opal/issues/1110, fixed in Opal 0.9

Returns:

  • (Boolean) 


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# File 'opal/opal/rspec/fixes/opal/compatibility.rb', line 95

def self.class_within_class_new_works?
  TEST_CLASS.does_class_exist?
end

.clones_singleton_methods? ⇒ Boolean

https://github.com/opal/opal/commit/78016aa11955e4cff3d6bbf06f1222d40b03a9e6, fixed in Opal 0.9

Returns:

  • (Boolean) 


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# File 'opal/opal/rspec/fixes/opal/compatibility.rb', line 5

def self.clones_singleton_methods?
  obj = Object.new

  def obj.special()
    :the_one
  end

  clone = obj.clone
  clone.respond_to?(:special) && clone.special == :the_one
end

.constant_resolution_works_right? ⇒ Boolean

https://github.com/opal/opal/issues/1085

Returns:

  • (Boolean) 


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# File 'opal/opal/rspec/fixes/opal/compatibility.rb', line 144

def self.constant_resolution_works_right?
  begin
    ModuleConstTest::ConstTest.new
    false
  rescue
    true
  end
end

.empty_regex_works? ⇒ Boolean

https://github.com/opal/opal/pull/1129

Returns:

  • (Boolean) 


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# File 'opal/opal/rspec/fixes/opal/compatibility.rb', line 119

def self.empty_regex_works?
  empty = //
  begin
    empty.options == 0 && empty.match('foo').to_s == ''
  rescue
    false
  end
end

.exception_exception_method_works? ⇒ Boolean

https://github.com/opal/opal/pull/1151, should be fixed in Opal 0.9

Returns:

  • (Boolean) 


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# File 'opal/opal/rspec/fixes/opal/compatibility.rb', line 159

def self.exception_exception_method_works?
  Exception.respond_to?(:exception) && Exception.exception.is_a?(Exception)
end

.exception_inspect_matches? ⇒ Boolean

https://github.com/opal/opal/pull/1134

Returns:

  • (Boolean) 


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# File 'opal/opal/rspec/fixes/opal/compatibility.rb', line 154

def self.exception_inspect_matches?
  Exception.new.inspect == '#<Exception: Exception>'
end

.fail_raise_matches_mri? ⇒ Boolean

https://github.com/opal/opal/pull/1117, status pending

Returns:

  • (Boolean) 


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# File 'opal/opal/rspec/fixes/opal/compatibility.rb', line 72

def self.fail_raise_matches_mri?
  ex = nil
  %x{
    try {
      #{fail}
    }
    catch(e) {
      #{ex} = e;
    }
  }
  ex.is_a? RuntimeError
end

.full_class_names? ⇒ Boolean

https://github.com/opal/opal/issues/1079, fixed in Opal 0.9

Returns:

  • (Boolean) 


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# File 'opal/opal/rspec/fixes/opal/compatibility.rb', line 31

def self.full_class_names?
  Opal::RSpec::Compatibility.to_s == 'Opal::RSpec::Compatibility'
end

.is_constants_a_clone? ⇒ Boolean

https://github.com/opal/opal/issues/1080, fixed in Opal 0.9

Returns:

  • (Boolean) 


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# File 'opal/opal/rspec/fixes/opal/compatibility.rb', line 42

def self.is_constants_a_clone?
  mod = Opal::RSpec::Compatibility
  `#{mod.constants} !== #{mod.constants}`
end

.is_set_coerced_to_array? ⇒ Boolean

https://github.com/opal/opal/issues/858

Returns:

  • (Boolean) 


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# File 'opal/opal/rspec/fixes/opal/compatibility.rb', line 59

def self.is_set_coerced_to_array?
  require 'set'

  obj = Object.new

  def obj.splat(*data)
    return data[0]
  end

  obj.splat(*Set.new(Set.new([:foo, :bar]))) == :foo
end

.is_struct_hash_correct? ⇒ Boolean

https://github.com/opal/opal/pull/1123, SHOULD be fixed in Opal 0.9

Returns:

  • (Boolean) 


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# File 'opal/opal/rspec/fixes/opal/compatibility.rb', line 36

def self.is_struct_hash_correct?
  s = Struct.new(:id)
  s.new(1) == s.new(1)
end

.lambda_zero_arg_throws_arg_error? ⇒ Boolean

MRI does does, Opal does not yet

Returns:

  • (Boolean) 


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# File 'opal/opal/rspec/fixes/opal/compatibility.rb', line 221

def self.lambda_zero_arg_throws_arg_error?
  !(lambda { 3 } === lambda { 4 })
rescue
  true
end

.module_case_works_right? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'opal/opal/rspec/fixes/opal/compatibility.rb', line 182

def self.module_case_works_right?
  instance = ModuleCase3.new
  ModuleCase === instance && instance.kind_of?(ModuleCase)
end

.multiline_regex_works? ⇒ Boolean

https://github.com/opal/opal/pull/1129

Returns:

  • (Boolean) 


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# File 'opal/opal/rspec/fixes/opal/compatibility.rb', line 114

def self.multiline_regex_works?
  /foo.bar/m.match("foo\nbar").to_a == ["foo\nbar"]
end

.multiple_module_include_super_works_right? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'opal/opal/rspec/fixes/opal/compatibility.rb', line 208

def self.multiple_module_include_super_works_right?
  MultModSuperClass.new.stuff == :howdy
rescue
  false
end

.ostruct_works_right? ⇒ Boolean

https://github.com/opal/opal/pull/1135

Returns:

  • (Boolean) 


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# File 'opal/opal/rspec/fixes/opal/compatibility.rb', line 164

def self.ostruct_works_right?
  require 'ostruct'

  s = OpenStruct.new(:exist? => true)
  s.respond_to? :exist?
end

.pp_uses_stdout_default? ⇒ Boolean

https://github.com/opal/opal/pull/1104, fixed in Opal 0.9

Returns:

  • (Boolean) 


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# File 'opal/opal/rspec/fixes/opal/compatibility.rb', line 17

def self.pp_uses_stdout_default?
  require 'stringio'
  require 'pp'

  stdout = $stdout
  $stdout = StringIO.new
  msg = 'opal-rspec - checking pp/pretty print features'
  PP.pp msg
  $stdout.string == "\"#{msg}\"\n"
ensure
  $stdout = stdout
end

.regex_case_compare_works? ⇒ Boolean

https://github.com/opal/opal/pull/1129

Returns:

  • (Boolean) 


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# File 'opal/opal/rspec/fixes/opal/compatibility.rb', line 129

def self.regex_case_compare_works?
  begin
    (/abc/ === nil) == false && (/abc/ === /abc/) == false
  rescue
    false
  end
end

.set_has_superset? ⇒ Boolean

https://github.com/opal/opal/pull/1152

Returns:

  • (Boolean) 


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# File 'opal/opal/rspec/fixes/opal/compatibility.rb', line 215

def self.set_has_superset?
  require 'set'
  Set.new.respond_to?(:superset?)
end

.undef_within_exec_works? ⇒ Boolean

Fixed in Opal 0.9

Returns:

  • (Boolean) 


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# File 'opal/opal/rspec/fixes/opal/compatibility.rb', line 100

def self.undef_within_exec_works?
  klass = Class.new do
    def bar
    end
  end

  klass.class_exec do
    undef bar
  end

  !klass.new.respond_to? :bar
end