diff options
Diffstat (limited to 'spec/mspec/lib/mspec/matchers/be_nan.rb')
-rw-r--r-- | spec/mspec/lib/mspec/matchers/be_nan.rb | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/spec/mspec/lib/mspec/matchers/be_nan.rb b/spec/mspec/lib/mspec/matchers/be_nan.rb new file mode 100644 index 0000000000..aa19391211 --- /dev/null +++ b/spec/mspec/lib/mspec/matchers/be_nan.rb @@ -0,0 +1,20 @@ +class BeNaNMatcher + def matches?(actual) + @actual = actual + @actual.kind_of?(Float) && @actual.nan? + end + + def failure_message + ["Expected #{@actual}", "to be NaN"] + end + + def negative_failure_message + ["Expected #{@actual}", "not to be NaN"] + end +end + +class Object + def be_nan + BeNaNMatcher.new + end +end |