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Diffstat (limited to 'spec/rubyspec/core/kernel/binding_spec.rb')
-rw-r--r-- | spec/rubyspec/core/kernel/binding_spec.rb | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/spec/rubyspec/core/kernel/binding_spec.rb b/spec/rubyspec/core/kernel/binding_spec.rb new file mode 100644 index 0000000000..0b33c86d3c --- /dev/null +++ b/spec/rubyspec/core/kernel/binding_spec.rb @@ -0,0 +1,51 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) + +describe "Kernel.binding" do + it "returns a binding for the caller" do + Kernel.binding.eval("self").should == self + end +end + +describe "Kernel#binding" do + it "is a private method" do + Kernel.should have_private_instance_method(:binding) + end + + before :each do + @b1 = KernelSpecs::Binding.new(99).get_binding + ScratchPad.clear + end + + it "returns a Binding object" do + @b1.kind_of?(Binding).should == true + end + + it "encapsulates the execution context properly" do + eval("@secret", @b1).should == 100 + eval("a", @b1).should == true + eval("b", @b1).should == true + eval("@@super_secret", @b1).should == "password" + + eval("square(2)", @b1).should == 4 + eval("self.square(2)", @b1).should == 4 + + eval("a = false", @b1) + eval("a", @b1).should == false + end + + it "raises a NameError on undefined variable" do + lambda { eval("a_fake_variable", @b1) }.should raise_error(NameError) + end + + it "uses the closure's self as self in the binding" do + m = mock(:whatever) + eval('self', m.send(:binding)).should == self + end + + it "uses the class as self in a Class.new block" do + m = mock(:whatever) + cls = Class.new { ScratchPad.record eval('self', m.send(:binding)) } + ScratchPad.recorded.should == cls + end +end |