1 files changed, 53 insertions, 0 deletions
diff --git a/spec/ruby/core/basicobject/not_equal_spec.rb b/spec/ruby/core/basicobject/not_equal_spec.rb
new file mode 100644
index 0000000000..29b14b0fff
--- /dev/null
+++ b/spec/ruby/core/basicobject/not_equal_spec.rb
@@ -0,0 +1,53 @@
+require_relative '../../spec_helper'
+
+describe "BasicObject#!=" do
+  it "is a public instance method" do
+    BasicObject.public_instance_methods(false).should.include?(:'!=')
+  end
+
+  it "returns true if other is not identical to self" do
+    a = BasicObject.new
+    b = BasicObject.new
+    (a != b).should == true
+  end
+
+  it "returns true if other is an Object" do
+    a = BasicObject.new
+    b = Object.new
+    (a != b).should == true
+  end
+
+  it "returns false if other is identical to self" do
+    a = BasicObject.new
+    (a != a).should == false
+  end
+
+  it "dispatches to #==" do
+    a = mock("not_equal")
+    b = BasicObject.new
+    a.should_receive(:==).and_return(true)
+
+    (a != b).should == false
+  end
+
+  describe "when invoked using Kernel#send" do
+    it "returns true if other is not identical to self" do
+      a = Object.new
+      b = Object.new
+      a.send(:!=, b).should == true
+    end
+
+    it "returns false if other is identical to self" do
+      a = Object.new
+      a.send(:!=, a).should == false
+    end
+
+    it "dispatches to #==" do
+      a = mock("not_equal")
+      b = Object.new
+      a.should_receive(:==).and_return(true)
+
+      a.send(:!=, b).should == false
+    end
+  end
+end