Class NullReferenceBehaviorExpectation

Namespace: AutoFixture.Idioms
Assembly: AutoFixture.Idioms.dll

Encapsulates expectations about the behavior of a method or constructor when it's invoked with a null argument.

public class NullReferenceBehaviorExpectation : IBehaviorExpectation

Inheritance

object ← NullReferenceBehaviorExpectation

Implements

IBehaviorExpectation

Inherited Members

object.GetType(), object.MemberwiseClone(), object.ToString(), object.Equals(object?), object.Equals(object?, object?), object.ReferenceEquals(object?, object?), object.GetHashCode()

Remarks

The NullReferenceBehaviorExpectation class encapsulates the following expectation: when an action (such as a method call or constructor invocation) is performed with a null argument it should raise an `ArgumentNullException`. If this happens the expectation is verified. If no exception, or any other type of exception, is thrown the expectation isn't met.

Constructors

NullReferenceBehaviorExpectation()

public NullReferenceBehaviorExpectation()

Methods

Verify(IGuardClauseCommand)

Verifies that the command behaves correct when invoked with a null argument.

public void Verify(IGuardClauseCommand command)

Parameters

command IGuardClauseCommand

The command whose behavior must be examined.

Remarks

The Verify method attempts to invoke the command instance's `Object)` with null. The expected result is that this action throws an `ArgumentNullException` with proper parameter name, in which case the expected behavior is considered verified. If any other exception is thrown, or if no exception is thrown at all, the verification fails and an exception is thrown.

The behavior is only asserted if the command's `RequestedType` is nullable. In case of value types, no action is performed.