diff options
Diffstat (limited to 'spec/ruby/core/module/shared/class_eval.rb')
-rw-r--r-- | spec/ruby/core/module/shared/class_eval.rb | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/spec/ruby/core/module/shared/class_eval.rb b/spec/ruby/core/module/shared/class_eval.rb new file mode 100644 index 0000000000..6bb9668fee --- /dev/null +++ b/spec/ruby/core/module/shared/class_eval.rb @@ -0,0 +1,115 @@ +describe :module_class_eval, shared: true do + # TODO: This should probably be replaced with a "should behave like" that uses + # the many scoping/binding specs from kernel/eval_spec, since most of those + # behaviors are the same for instance_eval. See also module_eval/class_eval. + + it "evaluates a given string in the context of self" do + ModuleSpecs.send(@method, "self").should == ModuleSpecs + ModuleSpecs.send(@method, "1 + 1").should == 2 + end + + it "does not add defined methods to other classes" do + FalseClass.send(@method) do + def foo + 'foo' + end + end + lambda {42.foo}.should raise_error(NoMethodError) + end + + it "resolves constants in the caller scope" do + ModuleSpecs::ClassEvalTest.get_constant_from_scope.should == ModuleSpecs::Lookup + end + + it "resolves constants in the caller scope ignoring send" do + ModuleSpecs::ClassEvalTest.get_constant_from_scope_with_send(@method).should == ModuleSpecs::Lookup + end + + it "resolves constants in the receiver's scope" do + ModuleSpecs.send(@method, "Lookup").should == ModuleSpecs::Lookup + ModuleSpecs.send(@method, "Lookup::LOOKIE").should == ModuleSpecs::Lookup::LOOKIE + end + + it "defines constants in the receiver's scope" do + ModuleSpecs.send(@method, "module NewEvaluatedModule;end") + ModuleSpecs.const_defined?(:NewEvaluatedModule, false).should == true + end + + it "evaluates a given block in the context of self" do + ModuleSpecs.send(@method) { self }.should == ModuleSpecs + ModuleSpecs.send(@method) { 1 + 1 }.should == 2 + end + + it "passes the module as the first argument of the block" do + given = nil + ModuleSpecs.send(@method) do |block_parameter| + given = block_parameter + end + given.should equal ModuleSpecs + end + + it "uses the optional filename and lineno parameters for error messages" do + ModuleSpecs.send(@method, "[__FILE__, __LINE__]", "test", 102).should == ["test", 102] + end + + it "converts a non-string filename to a string using to_str" do + (file = mock(__FILE__)).should_receive(:to_str).and_return(__FILE__) + ModuleSpecs.send(@method, "1+1", file) + end + + it "raises a TypeError when the given filename can't be converted to string using to_str" do + (file = mock('123')).should_receive(:to_str).and_return(123) + lambda { ModuleSpecs.send(@method, "1+1", file) }.should raise_error(TypeError) + end + + it "converts non string eval-string to string using to_str" do + (o = mock('1 + 1')).should_receive(:to_str).and_return("1 + 1") + ModuleSpecs.send(@method, o).should == 2 + end + + it "raises a TypeError when the given eval-string can't be converted to string using to_str" do + o = mock('x') + lambda { ModuleSpecs.send(@method, o) }.should raise_error(TypeError) + + (o = mock('123')).should_receive(:to_str).and_return(123) + lambda { ModuleSpecs.send(@method, o) }.should raise_error(TypeError) + end + + it "raises an ArgumentError when no arguments and no block are given" do + lambda { ModuleSpecs.send(@method) }.should raise_error(ArgumentError) + end + + it "raises an ArgumentError when more than 3 arguments are given" do + lambda { + ModuleSpecs.send(@method, "1 + 1", "some file", 0, "bogus") + }.should raise_error(ArgumentError) + end + + it "raises an ArgumentError when a block and normal arguments are given" do + lambda { + ModuleSpecs.send(@method, "1 + 1") { 1 + 1 } + }.should raise_error(ArgumentError) + end + + # This case was found because Rubinius was caching the compiled + # version of the string and not duping the methods within the + # eval, causing the method addition to change the static scope + # of the shared CompiledCode. + it "adds methods respecting the lexical constant scope" do + code = "def self.attribute; C; end" + + a = Class.new do + self::C = "A" + end + + b = Class.new do + self::C = "B" + end + + a.send @method, code + b.send @method, code + + a.attribute.should == "A" + b.attribute.should == "B" + end +end |