ModuleHUnit-1.6.2.0Haskell2010

Test.HUnit.Lang

4 types
4 values

PackageHUnit-1.6.2.0
Exports8
LanguageHaskell2010
LicenceBSD-3-Clause
SourceLang.hs

typetype Assertion = IO ()

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.

valueassertFailure

:: HasCallStack
=> String
A message that is displayed with the assertion failure
-> IO a

Unconditionally signals that a failure has occurred.

valueassertEqual

:: (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.

datadata Result

Constructors

Instances2Eq, Show

Eq ResultDefined in HUnit-1.6.2.0 · Test.HUnit.Lang
Show ResultDefined in HUnit-1.6.2.0 · Test.HUnit.Lang

valueperformTestCase

:: Assertion
an assertion to be made during the test case run
-> IO Result

Performs a single test case.

Internals

3 declarations

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!

datadata HUnitFailure

Constructors

HUnitFailure (Maybe SrcLoc) FailureReason

Instances3Eq, Show, Exception

Eq HUnitFailureDefined in HUnit-1.6.2.0 · Test.HUnit.Lang
Show HUnitFailureDefined in HUnit-1.6.2.0 · Test.HUnit.Lang
Exception HUnitFailureDefined in HUnit-1.6.2.0 · Test.HUnit.Lang

datadata FailureReason

Constructors

Reason String
ExpectedButGot (Maybe String) String String

Instances2Eq, Show

Eq FailureReasonDefined in HUnit-1.6.2.0 · Test.HUnit.Lang
Show FailureReasonDefined in HUnit-1.6.2.0 · Test.HUnit.Lang

valueformatFailureReason :: FailureReason -> String