Assert.IsNull Method

Definition

Namespace:: Microsoft.VisualStudio.TestTools.UnitTesting

Assembly:: Microsoft.VisualStudio.TestPlatform.TestFramework.dll

Assembly:: Microsoft.VisualStudio.QualityTools.UnitTestFramework.dll

Assembly:: MSTest.TestFramework.dll

Package:: MSTest.TestFramework v1.1.18

Package:: MSTest.TestFramework v1.2.1

Package:: MSTest.TestFramework v1.3.2

Package:: MSTest.TestFramework v1.4.0

Package:: MSTest.TestFramework v2.0.0

Package:: MSTest.TestFramework v2.1.2

Package:: MSTest.TestFramework v2.2.10

Package:: MSTest.TestFramework v3.0.4

Package:: MSTest.TestFramework v3.1.1

Package:: MSTest.TestFramework v3.10.5

Package:: MSTest.TestFramework v3.11.0

Package:: MSTest.TestFramework v3.2.2

Package:: MSTest.TestFramework v3.3.1

Package:: MSTest.TestFramework v3.4.3

Package:: MSTest.TestFramework v3.5.2

Package:: MSTest.TestFramework v3.6.4

Package:: MSTest.TestFramework v3.7.3

Package:: MSTest.TestFramework v3.8.3

Package:: MSTest.TestFramework v3.9.3

Package:: MSTest.TestFramework v4.0.0

Important

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Overloads

IsNull(Object, String, Object[])	Tests whether the specified object is null and throws an exception if it is not.
IsNull(Object, Assert+AssertIsNullInterpolatedStringHandler, String)	Tests whether the specified object is null and throws an exception if it is not.
IsNull(Object, String, String)	Tests whether the specified object is null and throws an exception if it is not.
IsNull(Object, String)	Tests whether the specified object is null and throws an exception if it is not.
IsNull(Object)	Tests whether the specified object is null and throws an exception if it is not.
IsNull(Object, Assert+AssertIsNullInterpolatedStringHandler)	Tests whether the specified object is null and throws an exception if it is not.

IsNull(Object, String, Object[])

Source:: Assert.IsNull.cs

Source:: Assert.IsNull.cs

Source:: Assert.IsNull.cs

Source:: Assert.IsNull.cs

Source:: Assert.IsNull.cs

Source:: Assert.IsNull.cs

Source:: Assert.IsNull.cs

Source:: Assert.IsNull.cs

Source:: Assert.IsNull.cs

Source:: Assert.IsNull.cs

Source:: Assert.IsNull.cs

Tests whether the specified object is null and throws an exception if it is not.

public static void IsNull(object value, string message, params object[] parameters);

public static void IsNull(object? value, string? message, params object?[]? parameters);

static member IsNull : obj * string * obj[] -> unit

Public Shared Sub IsNull (value As Object, message As String, ParamArray parameters As Object())

Parameters

value: Object

The object the test expects to be null.

message: String

The message to include in the exception when value is not null. The message is shown in test results.

parameters: Object[]

An array of parameters to use when formatting message.

Exceptions

AssertFailedException

Thrown if value is not null.

Applies to

MSTest.TestFramework 3.11.0 和其他版本

产品	版本
MSTest.TestFramework	1.1.18, 1.2.1, 1.3.2, 1.4.0, 2.2.0, 2.1.2, 2.2.10, 3.0.4, 3.1.1, 3.2.2, 3.3.1, 3.4.3, 3.5.1, 3.6.4, 3.7.3, 3.8.3, 3.9.3, 3.10.5, 3.11.0

IsNull(Object, Assert+AssertIsNullInterpolatedStringHandler, String)

Source:: Assert.IsNull.cs

Tests whether the specified object is null and throws an exception if it is not.

public static void IsNull(object? value, ref Microsoft.VisualStudio.TestTools.UnitTesting.Assert.AssertIsNullInterpolatedStringHandler message, string valueExpression = "");

static member IsNull : obj * AssertIsNullInterpolatedStringHandler * string -> unit

Public Shared Sub IsNull (value As Object, ByRef message As Assert.AssertIsNullInterpolatedStringHandler, Optional valueExpression As String = "")

Parameters

value: Object

The object the test expects to be null.

message: Assert.AssertIsNullInterpolatedStringHandler

The message to include in the exception when value is not null. The message is shown in test results.

valueExpression: String

The syntactic expression of value as given by the compiler via caller argument expression. Users shouldn't pass a value for this parameter.

Applies to

MSTest.TestFramework 4.0.0

产品	版本
MSTest.TestFramework	4.0.0

IsNull(Object, String, String)

Source:: Assert.IsNull.cs

Tests whether the specified object is null and throws an exception if it is not.

public static void IsNull(object? value, string? message = "", string valueExpression = "");

static member IsNull : obj * string * string -> unit

Public Shared Sub IsNull (value As Object, Optional message As String = "", Optional valueExpression As String = "")

Parameters

value: Object

The object the test expects to be null.

message: String

The message to include in the exception when value is not null. The message is shown in test results.

valueExpression: String

The syntactic expression of value as given by the compiler via caller argument expression. Users shouldn't pass a value for this parameter.

Exceptions

AssertFailedException

Thrown if value is not null.

Applies to

MSTest.TestFramework 4.0.0

产品	版本
MSTest.TestFramework	4.0.0

IsNull(Object, String)

Source:: Assert.IsNull.cs

Source:: Assert.IsNull.cs

Source:: Assert.IsNull.cs

Source:: Assert.IsNull.cs

Source:: Assert.IsNull.cs

Source:: Assert.IsNull.cs

Source:: Assert.IsNull.cs

Source:: Assert.IsNull.cs

Source:: Assert.IsNull.cs

Source:: Assert.IsNull.cs

Source:: Assert.IsNull.cs

Tests whether the specified object is null and throws an exception if it is not.

public static void IsNull(object value, string message);

public static void IsNull(object? value, string? message);

static member IsNull : obj * string -> unit

Public Shared Sub IsNull (value As Object, message As String)

Parameters

value: Object

The object the test expects to be null.

message: String

The message to include in the exception when value is not null. The message is shown in test results.

Exceptions

AssertFailedException

Thrown if value is not null.

Applies to

MSTest.TestFramework 3.11.0 和其他版本

产品	版本
MSTest.TestFramework	1.1.18, 1.2.1, 1.3.2, 1.4.0, 2.2.0, 2.1.2, 2.2.10, 3.0.4, 3.1.1, 3.2.2, 3.3.1, 3.4.3, 3.5.1, 3.6.4, 3.7.3, 3.8.3, 3.9.3, 3.10.5, 3.11.0

IsNull(Object)

Source:: Assert.IsNull.cs

Source:: Assert.IsNull.cs

Source:: Assert.IsNull.cs

Source:: Assert.IsNull.cs

Source:: Assert.IsNull.cs

Source:: Assert.IsNull.cs

Source:: Assert.IsNull.cs

Source:: Assert.IsNull.cs

Source:: Assert.IsNull.cs

Source:: Assert.IsNull.cs

Source:: Assert.IsNull.cs

Tests whether the specified object is null and throws an exception if it is not.

public static void IsNull(object value);

public static void IsNull(object? value);

static member IsNull : obj -> unit

Public Shared Sub IsNull (value As Object)

Parameters

value: Object

The object the test expects to be null.

Exceptions

AssertFailedException

Thrown if value is not null.

Applies to

MSTest.TestFramework 3.11.0 和其他版本

产品	版本
MSTest.TestFramework	1.1.18, 1.2.1, 1.3.2, 1.4.0, 2.2.0, 2.1.2, 2.2.10, 3.0.4, 3.1.1, 3.2.2, 3.3.1, 3.4.3, 3.5.1, 3.6.4, 3.7.3, 3.8.3, 3.9.3, 3.10.5, 3.11.0

IsNull(Object, Assert+AssertIsNullInterpolatedStringHandler)

Source:: Assert.IsNull.cs

Source:: Assert.IsNull.cs

Source:: Assert.IsNull.cs

Source:: Assert.IsNull.cs

Tests whether the specified object is null and throws an exception if it is not.

public static void IsNull(object? value, ref Microsoft.VisualStudio.TestTools.UnitTesting.Assert.AssertIsNullInterpolatedStringHandler message);

static member IsNull : obj * AssertIsNullInterpolatedStringHandler -> unit

Public Shared Sub IsNull (value As Object, ByRef message As Assert.AssertIsNullInterpolatedStringHandler)

Parameters

value: Object

The object the test expects to be null.

message: Assert.AssertIsNullInterpolatedStringHandler

The message to include in the exception when value is not null. The message is shown in test results.

Applies to

MSTest.TestFramework 3.11.0 和其他版本

产品	版本
MSTest.TestFramework	3.8.3, 3.9.3, 3.10.5, 3.11.0

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通过

Assert.IsNull Method

Definition

Overloads

IsNull(Object, String, Object[])

Parameters

Exceptions

Applies to

IsNull(Object, Assert+AssertIsNullInterpolatedStringHandler, String)

Parameters

Applies to

IsNull(Object, String, String)

Parameters

Exceptions

Applies to

IsNull(Object, String)

Parameters

Exceptions

Applies to

IsNull(Object)

Parameters

Exceptions

Applies to

IsNull(Object, Assert+AssertIsNullInterpolatedStringHandler)

Parameters

Applies to