ApartmentAttribute Marks a test that must run in a particular threading apartment state, causing it to run in a separate thread if necessary.

 Assert The Assert class contains a collection of static methods that implement the most common assertions used in NUnit.

 AssertionException Thrown when an assertion failed.

 AssertionHelper AssertionHelper is an optional base class for user tests, allowing the use of shorter ids for constraints and asserts and avoiding conflict with the definition of , from which it inherits much of its behavior, in certain mock object frameworks.

 Assume Provides static methods to express the assumptions that must be met for a test to give a meaningful result. If an assumption is not met, the test should produce an inconclusive result.

 AuthorAttribute Provides the Author of a test or test fixture.

 CategoryAttribute Attribute used to apply a category to a test

 CollectionAssert A set of Assert methods operating on one or more collections

 CombinatorialAttribute Marks a test to use a combinatorial join of any argument data provided. Since this is the default, the attribute is optional.

 Contains Helper class with properties and methods that supply a number of constraints used in Asserts.

 CultureAttribute CultureAttribute is used to mark a test fixture or an individual method as applying to a particular Culture only.

 DatapointAttribute Used to mark a field for use as a datapoint when executing a theory within the same fixture that requires an argument of the field's Type.

 DatapointsAttribute Used to mark a field, property or method providing a set of datapoints to be used in executing any theories within the same fixture that require an argument of the Type provided. The data source may provide an array of the required Type or an . Synonymous with DatapointSourceAttribute.

 DatapointSourceAttribute Used to mark a field, property or method providing a set of datapoints to be used in executing any theories within the same fixture that require an argument of the Type provided. The data source may provide an array of the required Type or an . Synonymous with DatapointsAttribute.

 DescriptionAttribute Attribute used to provide descriptive text about a test case or fixture.

 ExplicitAttribute ExplicitAttribute marks a test or test fixture so that it will only be run if explicitly executed from the gui or command line or if it is included by use of a filter. The test will not be run simply because an enclosing suite is run.

 GlobalSettings GlobalSettings is a place for setting default _values used by the framework in performing asserts.

 Has Helper class with properties and methods that supply a number of constraints used in Asserts.

 IgnoreAttribute Attribute used to mark a test that is to be ignored. Ignored tests result in a warning message when the tests are run.

 IgnoreException Thrown when an assertion failed.

 InconclusiveException Thrown when a test executes inconclusively.

 Is Helper class with properties and methods that supply a number of constraints used in Asserts.

 Iz The Iz class is a synonym for Is intended for use in VB, which regards Is as a keyword.

 LevelOfParallelismAttribute LevelOfParallelismAttribute is used to set the number of worker threads that may be allocated by the framework for running tests.

 List The List class is a helper class with properties and methods that supply a number of constraints used with lists and collections.

 ListMapper ListMapper is used to transform a collection used as an actual argument producing another collection to be used in the assertion.

 MaxTimeAttribute Summary description for MaxTimeAttribute.

 OneTimeSetUpAttribute Attribute used to identify a method that is called once to perform setup before any child tests are run.

 OneTimeTearDownAttribute Attribute used to identify a method that is called once after all the child tests have run. The method is guaranteed to be called, even if an exception is thrown.

 PairwiseAttribute Marks a test to use a pairwise join of any argument data provided. Arguments will be combined in such a way that all possible pairs of arguments are used.

 ParallelizableAttribute ParallelizableAttribute is used to mark tests that may be run in parallel.

 PlatformAttribute PlatformAttribute is used to mark a test fixture or an individual method as applying to a particular platform only.

 PostTestAttribute Attribute used to mark a class that contains one-time SetUp and/or TearDown methods that apply to all the tests in a namespace or an assembly.

 PreTestAttribute Attribute used to mark a class that contains one-time SetUp and/or TearDown methods that apply to all the tests in a namespace or an assembly.

 PropertyAttribute PropertyAttribute is used to attach information to a test as a name/value pair..

 RandomAttribute RandomAttribute is used to supply a set of random _values to a single parameter of a parameterized test.

 RangeAttribute RangeAttribute is used to supply a range of _values to an individual parameter of a parameterized test.

 RepeatAttribute RepeatAttribute may be applied to test case in order to run it multiple times.

 RequiresMTAAttribute Marks a test that must run in the MTA, causing it to run in a separate thread if necessary. On methods, you may also use MTAThreadAttribute to serve the same purpose.

 RequiresSTAAttribute Marks a test that must run in the STA, causing it to run in a separate thread if necessary.

 RequiresThreadAttribute Marks a test that must run on a separate thread.

 RetryAttribute RepeatAttribute may be applied to test case in order to run it multiple times.

 SequentialAttribute Marks a test to use a Sequential join of any argument data provided. Arguments will be combined into test cases, taking the next value of each argument until all are used.

 SetCultureAttribute Summary description for SetCultureAttribute.

 SetUICultureAttribute Summary description for SetUICultureAttribute.

 SetUpAttribute Attribute used to mark a class that contains one-time SetUp and/or TearDown methods that apply to all the tests in a namespace or an assembly.

 SetUpFixtureAttribute SetUpFixtureAttribute is used to identify a SetUpFixture

 StringAssert Basic Asserts on strings.

 SuccessException Thrown when an assertion failed.

 TearDownAttribute Attribute used to identify a method that is called immediately after each test is run. The method is guaranteed to be called, even if an exception is thrown.

 TestAttribute Adding this attribute to a method within a class makes the method callable from the NUnit test runner. There is a property called Description which is optional which you can provide a more detailed test description. This class cannot be inherited.

 TestCaseAttribute TestCaseAttribute is used to mark parameterized test cases and provide them with their arguments.

 TestCaseData The TestCaseData class represents a set of arguments and other parameter info to be used for a parameterized test case. It is derived from TestCaseParameters and adds a fluent syntax for use in initializing the test case.

 TestCaseSourceAttribute TestCaseSourceAttribute indicates the source to be used to provide test cases for a test method.

 TestContext Provide the context information of the current test. This is an adapter for the internal ExecutionContext class, hiding the internals from the user test.

 TestFixtureAttribute TestFixtureAttribute is used to mark a class that represents a TestFixture.

 TestFixtureData The TestFixtureData class represents a set of arguments and other parameter info to be used for a parameterized fixture. It is derived from TestFixtureParameters and adds a fluent syntax for use in initializing the fixture.

 TestFixtureSetUpAttribute Attribute used to identify a method that is called before any tests in a fixture are run.

 TestFixtureSourceAttribute TestCaseSourceAttribute indicates the source to be used to provide test fixture instances for a test class.

 TestFixtureTearDownAttribute Attribute used to identify a method that is called after all the tests in a fixture have run. The method is guaranteed to be called, even if an exception is thrown.

 TestOfAttribute Indicates which class the test or test fixture is testing

 TheoryAttribute Adding this attribute to a method within a class makes the method callable from the NUnit test runner. There is a property called Description which is optional which you can provide a more detailed test description. This class cannot be inherited.

 Throws Helper class with properties and methods that supply constraints that operate on exceptions.

 TimeoutAttribute Used on a method, marks the test with a timeout value in milliseconds. The test will be run in a separate thread and is cancelled if the timeout is exceeded. Used on a class or assembly, sets the default timeout for all contained test methods.

 ValuesAttribute ValuesAttribute is used to provide literal arguments for an individual parameter of a test.

 ValueSourceAttribute ValueSourceAttribute indicates the source to be used to provide data for one parameter of a test method.

 ActionTargets The different targets a test action attribute can be applied to

 ParallelScope The ParallelScope enumeration permits specifying the degree to which a test and its descendants may be run in parallel.

 SpecialValue The SpecialValue enum is used to represent TestCase arguments that cannot be used as arguments to an Attribute.

 DirectoryAssert Asserts on Directories

 Does Helper class with properties and methods that supply a number of constraints used in Asserts.

 FileAssert Asserts on Files

 CombiningStrategyAttribute Marks a test to use a particular CombiningStrategy to join any parameter data provided. Since this is the default, the attribute is optional.

 DataAttribute The abstract base class for all data-providing attributes defined by NUnit. Used to select all data sources for a method, class or parameter.

 IncludeExcludeAttribute Abstract base for Attributes that are used to include tests in the test run based on environmental settings.

 NUnitAttribute The abstract base class for all custom attributes defined by NUnit.

 ResultStateException Abstract base for Exceptions that terminate a test and provide a ResultState.

 TestActionAttribute Provide actions to execute before and after tests.

 ITestAction When implemented by an attribute, this interface implemented to provide actions to execute before and after tests.