Class Has

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

Inheritance
object
Has
Inherited Members
Namespace: NUnit.Framework
Assembly: nunit.framework.dll
Syntax
public abstract class Has

Constructors

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Has()

Declaration
protected Has()

Properties

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All

Returns a ConstraintExpression, which will apply the following constraint to all members of a collection, succeeding if all of them succeed.

Declaration
public static ConstraintExpression All { get; }
Property Value
Type Description
ConstraintExpression
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Count

Returns a new ConstraintExpression, which will apply the following constraint to the Count property of the object being tested.

Declaration
public static ResolvableConstraintExpression Count { get; }
Property Value
Type Description
ResolvableConstraintExpression
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InnerException

Returns a new ConstraintExpression, which will apply the following constraint to the InnerException property of the object being tested.

Declaration
public static ResolvableConstraintExpression InnerException { get; }
Property Value
Type Description
ResolvableConstraintExpression
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Length

Returns a new ConstraintExpression, which will apply the following constraint to the Length property of the object being tested.

Declaration
public static ResolvableConstraintExpression Length { get; }
Property Value
Type Description
ResolvableConstraintExpression
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Message

Returns a new ConstraintExpression, which will apply the following constraint to the Message property of the object being tested.

Declaration
public static ResolvableConstraintExpression Message { get; }
Property Value
Type Description
ResolvableConstraintExpression
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No

Returns a ConstraintExpression that negates any following constraint.

Declaration
public static ConstraintExpression No { get; }
Property Value
Type Description
ConstraintExpression
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None

Returns a ConstraintExpression, which will apply the following constraint to all members of a collection, succeeding if all of them fail.

Declaration
public static ConstraintExpression None { get; }
Property Value
Type Description
ConstraintExpression
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One

Returns a ItemsConstraintExpression which will apply the following constraint to only one member of the collection, and fail if none or more than one match occurs.

Declaration
public static ItemsConstraintExpression One { get; }
Property Value
Type Description
ItemsConstraintExpression
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Some

Returns a ConstraintExpression, which will apply the following constraint to all members of a collection, succeeding if at least one of them succeeds.

Declaration
public static ConstraintExpression Some { get; }
Property Value
Type Description
ConstraintExpression

Methods

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Attribute(Type)

Returns a new AttributeConstraint checking for the presence of a particular attribute on an object.

Declaration
public static ResolvableConstraintExpression Attribute(Type expectedType)
Parameters
Type Name Description
Type expectedType
Returns
Type Description
ResolvableConstraintExpression
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Attribute<T>()

Returns a new AttributeConstraint checking for the presence of a particular attribute on an object.

Declaration
public static ResolvableConstraintExpression Attribute<T>()
Returns
Type Description
ResolvableConstraintExpression
Type Parameters
Name Description
T
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Exactly(int)

Returns a ConstraintExpression, which will apply the following constraint to all members of a collection, succeeding only if a specified number of them succeed.

Declaration
public static ItemsConstraintExpression Exactly(int expectedCount)
Parameters
Type Name Description
int expectedCount
Returns
Type Description
ItemsConstraintExpression
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ItemAt(params object[])

Returns a new IndexerConstraintExpression, which will apply any following constraint to that indexer value.

Declaration
public static ConstraintExpression ItemAt(params object[] indexArgs)
Parameters
Type Name Description
object[] indexArgs

Index accessor values.
Returns
Type Description
ConstraintExpression
View Source

Member(object?)

Returns a new SomeItemsConstraint checking for the presence of a particular object in the collection.

Declaration
public static SomeItemsConstraint Member(object? expected)
Parameters
Type Name Description
object expected
Returns
Type Description
SomeItemsConstraint
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Property(string)

Returns a new PropertyConstraintExpression, which will either test for the existence of the named property on the object being tested or apply any following constraint to that property.

Declaration
public static ResolvableConstraintExpression Property(string name)
Parameters
Type Name Description
string name
Returns
Type Description
ResolvableConstraintExpression