| Safe Haskell | Safe-Inferred |
|---|---|
| Language | Haskell98 |
Test.HUnit.Lang
Contents
Description
This module abstracts the differences between implementations of Haskell (e.g., GHC, Hugs, and NHC).
- type Assertion = IO ()
- assertFailure :: String -> Assertion
- performTestCase :: Assertion -> IO (Maybe (Bool, String))
- data HUnitFailure = HUnitFailure String
Documentation
When an assertion is evaluated, it will output a message if and only if the assertion fails.
Test cases are composed of a sequence of one or more assertions.
Unconditionally signals that a failure has occured. All other assertions can be expressed with the form:
if conditionIsMet
then IO ()
else assertFailure msg
Performs a single test case. The meaning of the result is as follows:
Nothing- test case success
Just (True, msg)- test case failure with the given message
Just (False, msg)- test case error with the given message
Internals
Note: This is not part of the public API! It is exposed so that you can tinker with the internals of HUnit, but do not expect it to be stable!