1 files changed, 27 insertions, 0 deletions
diff --git a/spec/rubyspec/core/hash/shared/index.rb b/spec/rubyspec/core/hash/shared/index.rb
new file mode 100644
index 0000000000..9aa1b2a46f
--- /dev/null
+++ b/spec/rubyspec/core/hash/shared/index.rb
@@ -0,0 +1,27 @@
+require File.expand_path('../../../../spec_helper', __FILE__)
+require File.expand_path('../../fixtures/classes', __FILE__)
+
+describe :hash_index, shared: true do
+  it "returns the corresponding key for value" do
+    { 2 => 'a', 1 => 'b' }.send(@method, 'b').should == 1
+  end
+
+  it "returns nil if the value is not found" do
+    { a: -1, b: 3.14, c: 2.718 }.send(@method, 1).should be_nil
+  end
+
+  it "doesn't return default value if the value is not found" do
+    Hash.new(5).send(@method, 5).should be_nil
+  end
+
+  it "compares values using ==" do
+    { 1 => 0 }.send(@method, 0.0).should == 1
+    { 1 => 0.0 }.send(@method, 0).should == 1
+
+    needle = mock('needle')
+    inhash = mock('inhash')
+    inhash.should_receive(:==).with(needle).and_return(true)
+
+    { 1 => inhash }.send(@method, needle).should == 1
+  end
+end