implemented hashing macro; implemented custom matcher testing this macro

1 files changed, 26 insertions, 0 deletions

diff --git a/spec/matchers/hash_the_same_as.rb b/spec/matchers/hash_the_same_as.rb
new file mode 100644
index 0000000000..86e98f31a3
--- /dev/null
+++ b/spec/matchers/hash_the_same_as.rb
@@ -0,0 +1,26 @@
+module HashTheSameAsMatcher
+  class HashTheSameAs
+    def initialize(expected)
+      @expected = expected
+    end
+    
+    def matches?(target)
+      @target = target
+      hash = {}
+      hash[@expected] = :some_arbitrary_value
+      hash[@target] == :some_arbitrary_value
+    end
+    
+    def failure_message
+      "expected #{@target} to hash the same as #{@expected}; they must be `eql?` and have the same `#hash` value"
+    end
+    
+    def negative_failure_message
+      "expected #{@target} to hash differently than #{@expected}; they must not be `eql?` or have a differing `#hash` values"
+    end
+  end
+  
+  def hash_the_same_as(expected)
+    HashTheSameAs.new(expected)
+  end
+end
\ No newline at end of file