1 files changed, 68 insertions, 0 deletions
diff --git a/spec/ruby/core/exception/equal_value_spec.rb b/spec/ruby/core/exception/equal_value_spec.rb
new file mode 100644
index 0000000000..b76b3bcd4a
--- /dev/null
+++ b/spec/ruby/core/exception/equal_value_spec.rb
@@ -0,0 +1,68 @@
+require_relative '../../spec_helper'
+require_relative 'fixtures/common'
+
+describe "Exception#==" do
+  it "returns true if both exceptions are the same object" do
+    e = ArgumentError.new
+    e.should == e
+  end
+
+  it "returns true if one exception is the dup'd copy of the other" do
+    e = ArgumentError.new
+    e.should == e.dup
+  end
+
+  it "returns true if both exceptions have the same class, no message, and no backtrace" do
+    RuntimeError.new.should == RuntimeError.new
+  end
+
+  it "returns true if both exceptions have the same class, the same message, and no backtrace" do
+    TypeError.new("message").should == TypeError.new("message")
+  end
+
+  it "returns true if both exceptions have the same class, the same message, and the same backtrace" do
+    one = TypeError.new("message")
+    one.set_backtrace [__dir__]
+    two = TypeError.new("message")
+    two.set_backtrace [__dir__]
+    one.should == two
+  end
+
+  it "returns false if the two exceptions inherit from Exception but have different classes" do
+    one = RuntimeError.new("message")
+    one.set_backtrace [__dir__]
+    one.should.is_a?(Exception)
+    two = TypeError.new("message")
+    two.set_backtrace [__dir__]
+    two.should.is_a?(Exception)
+    one.should_not == two
+  end
+
+  it "returns true if the two objects subclass Exception and have the same message and backtrace" do
+    one = ExceptionSpecs::UnExceptional.new
+    two = ExceptionSpecs::UnExceptional.new
+    one.message.should == two.message
+    two.backtrace.should == two.backtrace
+    one.should == two
+  end
+
+  it "returns false if the argument is not an Exception" do
+    ArgumentError.new.should_not == String.new
+  end
+
+  it "returns false if the two exceptions differ only in their backtrace" do
+    one = RuntimeError.new("message")
+    one.set_backtrace [__dir__]
+    two = RuntimeError.new("message")
+    two.set_backtrace nil
+    one.should_not == two
+  end
+
+  it "returns false if the two exceptions differ only in their message" do
+    one = RuntimeError.new("message")
+    one.set_backtrace [__dir__]
+    two = RuntimeError.new("message2")
+    two.set_backtrace [__dir__]
+    one.should_not == two
+  end
+end