added RSpec and RSpec on Rails

[rails.git] / vendor / gems / rspec-1.1.2 / lib / spec / matchers / be_close.rb

diff --git a/vendor/gems/rspec-1.1.2/lib/spec/matchers/be_close.rb b/vendor/gems/rspec-1.1.2/lib/spec/matchers/be_close.rb
new file mode 100644 (file)
index 0000000..7763eb9
--- /dev/null
+++ b/vendor/gems/rspec-1.1.2/lib/spec/matchers/be_close.rb
@@ -0,0 +1,37 @@
+module Spec
+  module Matchers
+
+    class BeClose #:nodoc:
+      def initialize(expected, delta)
+        @expected = expected
+        @delta = delta
+      end
+      
+      def matches?(actual)
+        @actual = actual
+        (@actual - @expected).abs < @delta
+      end
+      
+      def failure_message
+        "expected #{@expected} +/- (< #{@delta}), got #{@actual}"
+      end
+      
+      def description
+        "be close to #{@expected} (within +- #{@delta})"
+      end
+    end
+    
+    # :call-seq:
+    #   should be_close(expected, delta)
+    #   should_not be_close(expected, delta)
+    #
+    # Passes if actual == expected +/- delta
+    #
+    # == Example
+    #
+    #   result.should be_close(3.0, 0.5)
+    def be_close(expected, delta)
+      Matchers::BeClose.new(expected, delta)
+    end
+  end
+end