1 files changed, 38 insertions, 0 deletions
diff --git a/spec/rubyspec/library/digest/md5/equal_spec.rb b/spec/rubyspec/library/digest/md5/equal_spec.rb
new file mode 100644
index 0000000000..0b776f53c0
--- /dev/null
+++ b/spec/rubyspec/library/digest/md5/equal_spec.rb
@@ -0,0 +1,38 @@
+require File.expand_path('../../../../spec_helper', __FILE__)
+require File.expand_path('../shared/constants', __FILE__)
+
+describe "Digest::MD5#==" do
+
+  it "equals itself" do
+    cur_digest = Digest::MD5.new
+    cur_digest.should == cur_digest
+  end
+
+  it "equals the string representing its hexdigest" do
+    cur_digest = Digest::MD5.new
+    cur_digest.should == MD5Constants::BlankHexdigest
+  end
+
+  it "equals the appropriate object that responds to to_str" do
+    # blank digest
+    cur_digest = Digest::MD5.new
+    obj = mock(MD5Constants::BlankHexdigest)
+    obj.should_receive(:to_str).and_return(MD5Constants::BlankHexdigest)
+    cur_digest.should == obj
+
+    # non-blank digest
+    cur_digest = Digest::MD5.new
+    cur_digest << "test"
+    d_value = cur_digest.hexdigest
+    (obj = mock(d_value)).should_receive(:to_str).and_return(d_value)
+    cur_digest.should == obj
+  end
+
+  it "equals the same digest for a different object" do
+    cur_digest = Digest::MD5.new
+    cur_digest2 = Digest::MD5.new
+    cur_digest.should == cur_digest2
+  end
+
+end
+