Class Does

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

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

Constructors

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Does()

Declaration
protected Does()

Properties

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Exist

Returns a constraint that succeeds if the value is a file or directory and it exists.

Declaration
public static FileOrDirectoryExistsConstraint Exist { get; }
Property Value
Type Description
FileOrDirectoryExistsConstraint
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Not

Returns a ConstraintExpression that negates any following constraint.

Declaration
public static ConstraintExpression Not { get; }
Property Value
Type Description
ConstraintExpression

Methods

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Contain(object?)

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

Declaration
public static SomeItemsConstraint Contain(object? expected)
Parameters
Type Name Description
object expected
Returns
Type Description
SomeItemsConstraint
View Source

Contain(string?)

Returns a new ContainsConstraint. This constraint will, in turn, make use of the appropriate second-level constraint, depending on the type of the actual argument. This overload is only used if the item sought is a string, since any other type implies that we are looking for a collection member.

Declaration
public static ContainsConstraint Contain(string? expected)
Parameters
Type Name Description
string expected
Returns
Type Description
ContainsConstraint
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ContainKey(object)

Returns a new DictionaryContainsKeyConstraint checking for the presence of a particular key in the Dictionary key collection.

Declaration
public static DictionaryContainsKeyConstraint ContainKey(object expected)
Parameters
Type Name Description
object expected

The key to be matched in the Dictionary key collection
Returns
Type Description
DictionaryContainsKeyConstraint
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ContainValue(object?)

Returns a new DictionaryContainsValueConstraint checking for the presence of a particular value in the Dictionary value collection.

Declaration
public static DictionaryContainsValueConstraint ContainValue(object? expected)
Parameters
Type Name Description
object expected

The value to be matched in the Dictionary value collection
Returns
Type Description
DictionaryContainsValueConstraint
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EndWith(string)

Returns a constraint that succeeds if the actual value ends with the substring supplied as an argument.

Declaration
public static EndsWithConstraint EndWith(string expected)
Parameters
Type Name Description
string expected
Returns
Type Description
EndsWithConstraint
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Match(string)

Returns a constraint that succeeds if the actual value matches the regular expression supplied as an argument.

Declaration
public static RegexConstraint Match(string pattern)
Parameters
Type Name Description
string pattern
Returns
Type Description
RegexConstraint
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Match(Regex)

Returns a constraint that succeeds if the actual value matches the regular expression supplied as an argument.

Declaration
public static RegexConstraint Match(Regex regex)
Parameters
Type Name Description
Regex regex
Returns
Type Description
RegexConstraint
View Source

StartWith(string)

Returns a constraint that succeeds if the actual value starts with the substring supplied as an argument.

Declaration
public static StartsWithConstraint StartWith(string expected)
Parameters
Type Name Description
string expected
Returns
Type Description
StartsWithConstraint