| Safe Haskell | Safe |
|---|---|
| Language | Haskell2010 |
Test.HUnit.Lang
Contents
- type Assertion = IO ()
- assertFailure :: HasCallStack => String -> Assertion
- assertEqual :: (HasCallStack, Eq a, Show a) => String -> a -> a -> Assertion
- data Result
- performTestCase :: Assertion -> IO Result
- data HUnitFailure = HUnitFailure (Maybe SrcLoc) FailureReason
- data FailureReason
- formatFailureReason :: FailureReason -> String
Documentation
type Assertion = IO () Source #
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.
Arguments
| :: HasCallStack | |
| => String | A message that is displayed with the assertion failure |
| -> Assertion |
Unconditionally signals that a failure has occured. All other assertions can be expressed with the form:
if conditionIsMet
then IO ()
else assertFailure msg
Arguments
| :: (HasCallStack, Eq a, Show a) | |
| => String | The message prefix |
| -> a | The expected value |
| -> a | The actual value |
| -> Assertion |
Asserts that the specified actual value is equal to the expected value. The output message will contain the prefix, the expected value, and the actual value.
If the prefix is the empty string (i.e., ""), then the prefix is omitted
and only the expected and actual values are output.
Performs a single test case.
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!
data FailureReason Source #
Instances