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Diffstat (limited to 'spec/ruby/core/module/const_set_spec.rb')
-rw-r--r-- | spec/ruby/core/module/const_set_spec.rb | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/spec/ruby/core/module/const_set_spec.rb b/spec/ruby/core/module/const_set_spec.rb new file mode 100644 index 0000000000..6f4f6f980f --- /dev/null +++ b/spec/ruby/core/module/const_set_spec.rb @@ -0,0 +1,86 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../../../fixtures/constants', __FILE__) + +describe "Module#const_set" do + it "sets the constant specified by a String or Symbol to the given value" do + ConstantSpecs.const_set :CS_CONST401, :const401 + ConstantSpecs::CS_CONST401.should == :const401 + + ConstantSpecs.const_set "CS_CONST402", :const402 + ConstantSpecs.const_get(:CS_CONST402).should == :const402 + end + + it "returns the value set" do + ConstantSpecs.const_set(:CS_CONST403, :const403).should == :const403 + end + + it "sets the name of an anonymous module" do + m = Module.new + ConstantSpecs.const_set(:CS_CONST1000, m) + m.name.should == "ConstantSpecs::CS_CONST1000" + end + + it "does not set the name of a module scoped by an anonymous module" do + a, b = Module.new, Module.new + a.const_set :B, b + b.name.should be_nil + end + + it "sets the name of contained modules when assigning a toplevel anonymous module" do + a, b, c, d = Module.new, Module.new, Module.new, Module.new + a::B = b + a::B::C = c + a::B::C::E = c + a::D = d + + Object.const_set :ModuleSpecs_CS3, a + a.name.should == "ModuleSpecs_CS3" + b.name.should == "ModuleSpecs_CS3::B" + c.name.should == "ModuleSpecs_CS3::B::C" + d.name.should == "ModuleSpecs_CS3::D" + end + + it "raises a NameError if the name does not start with a capital letter" do + lambda { ConstantSpecs.const_set "name", 1 }.should raise_error(NameError) + end + + it "raises a NameError if the name starts with a non-alphabetic character" do + lambda { ConstantSpecs.const_set "__CONSTX__", 1 }.should raise_error(NameError) + lambda { ConstantSpecs.const_set "@Name", 1 }.should raise_error(NameError) + lambda { ConstantSpecs.const_set "!Name", 1 }.should raise_error(NameError) + lambda { ConstantSpecs.const_set "::Name", 1 }.should raise_error(NameError) + end + + it "raises a NameError if the name contains non-alphabetic characters except '_'" do + ConstantSpecs.const_set("CS_CONST404", :const404).should == :const404 + lambda { ConstantSpecs.const_set "Name=", 1 }.should raise_error(NameError) + lambda { ConstantSpecs.const_set "Name?", 1 }.should raise_error(NameError) + end + + it "calls #to_str to convert the given name to a String" do + name = mock("CS_CONST405") + name.should_receive(:to_str).and_return("CS_CONST405") + ConstantSpecs.const_set(name, :const405).should == :const405 + ConstantSpecs::CS_CONST405.should == :const405 + end + + it "raises a TypeError if conversion to a String by calling #to_str fails" do + name = mock('123') + lambda { ConstantSpecs.const_set name, 1 }.should raise_error(TypeError) + + name.should_receive(:to_str).and_return(123) + lambda { ConstantSpecs.const_set name, 1 }.should raise_error(TypeError) + end + + describe "on a frozen module" do + before :each do + @frozen = Module.new.freeze + @name = :Foo + end + + it "raises a RuntimeError before setting the name" do + lambda { @frozen.const_set @name, nil }.should raise_error(RuntimeError) + @frozen.should_not have_constant(@name) + end + end +end |