1 files changed, 105 insertions, 0 deletions

diff --git a/spec/ruby/core/binding/eval_spec.rb b/spec/ruby/core/binding/eval_spec.rb
new file mode 100644
index 0000000000..f1d8591320
--- /dev/null
+++ b/spec/ruby/core/binding/eval_spec.rb
@@ -0,0 +1,105 @@
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+
+describe "Binding#eval" do
+  it "behaves like Kernel.eval(..., self)" do
+    obj = BindingSpecs::Demo.new(1)
+    bind = obj.get_binding
+
+    bind.eval("@secret += square(3)").should == 10
+    bind.eval("a").should == true
+
+    bind.eval("class Inside; end")
+    bind.eval("Inside.name").should == "BindingSpecs::Demo::Inside"
+  end
+
+  it "does not leak variables to cloned bindings" do
+    obj = BindingSpecs::Demo.new(1)
+    bind = obj.get_empty_binding
+    bind2 = bind.dup
+
+    bind.eval("x = 72")
+    bind.local_variables.should == [:x]
+    bind2.local_variables.should == []
+  end
+
+  it "starts with line 1 if single argument is given" do
+    obj = BindingSpecs::Demo.new(1)
+    bind = obj.get_binding
+    bind.eval("__LINE__").should == 1
+  end
+
+  it "preserves __LINE__ across multiple calls to eval" do
+    obj = BindingSpecs::Demo.new(1)
+    bind = obj.get_binding
+    bind.eval("__LINE__").should == 1
+    bind.eval("__LINE__").should == 1
+  end
+
+  it "increments __LINE__ on each line of a multiline eval" do
+    obj = BindingSpecs::Demo.new(1)
+    bind = obj.get_binding
+    bind.eval("#foo\n__LINE__").should == 2
+  end
+
+  it "starts with line 1 if the Binding is created with #send" do
+    obj = BindingSpecs::Demo.new(1)
+    bind, line = obj.get_binding_with_send_and_line
+    bind.eval("__LINE__").should == 1
+  end
+
+  it "starts with a __LINE__ of 1 if a filename is passed" do
+    bind = BindingSpecs::Demo.new(1).get_binding
+    bind.eval("__LINE__", "(test)").should == 1
+    bind.eval("#foo\n__LINE__", "(test)").should == 2
+  end
+
+  it "starts with a __LINE__ from the third argument if passed" do
+    bind = BindingSpecs::Demo.new(1).get_binding
+    bind.eval("__LINE__", "(test)", 88).should == 88
+    bind.eval("#foo\n__LINE__", "(test)", 88).should == 89
+  end
+
+  it "uses 1 as __LINE__" do
+    obj = BindingSpecs::Demo.new(1)
+    bind = obj.get_binding
+    suppress_warning { bind.eval("__LINE__") }.should == 1
+  end
+
+  it "uses the __FILE__ that is passed in" do
+    bind = BindingSpecs::Demo.new(1).get_binding
+    bind.eval("__FILE__", "(test)").should == "(test)"
+  end
+
+  describe "with a file given" do
+    it "does not store the filename permanently" do
+      obj = BindingSpecs::Demo.new(1)
+      bind = obj.get_binding
+
+      bind.eval("__FILE__", "test.rb").should == "test.rb"
+      suppress_warning {bind.eval("__FILE__")}.should_not == "test.rb"
+    end
+  end
+
+  it "with __method__ returns the method where the Binding was created" do
+    obj = BindingSpecs::Demo.new(1)
+    bind, meth = obj.get_binding_and_method
+    bind.eval("__method__").should == meth
+  end
+
+  it "with __method__ returns the method where the Binding was created, ignoring #send" do
+    obj = BindingSpecs::Demo.new(1)
+    bind, meth = obj.get_binding_with_send_and_method
+    bind.eval("__method__").should == meth
+  end
+
+  it "reflects refinements activated in the binding scope" do
+    bind = BindingSpecs::Refined.refined_binding
+
+    bind.eval("'bar'.foo").should == "foo"
+  end
+
+  it "uses the caller location as default filename" do
+    binding.eval("[__FILE__, __LINE__]").should == ["(eval at #{__FILE__}:#{__LINE__})", 1]
+  end
+end