Class ComparisonConstraint

Abstract base class for constraints that compare values to determine if one is greater than, equal to or less than the other.

Inheritance

object

Constraint

ComparisonConstraint

GreaterThanConstraint

GreaterThanOrEqualConstraint

LessThanConstraint

LessThanOrEqualConstraint

Implements

IConstraint

IResolveConstraint

Inherited Members

Constraint.ApplyTo<TActual>(ActualValueDelegate<TActual>)

Constraint.ApplyTo<TActual>(ref TActual)

Constraint.GetTestObject<TActual>(ActualValueDelegate<TActual>)

Constraint.ToString()

Constraint.GetStringRepresentation(IEnumerable)

Constraint.GetStringRepresentation()

Constraint.After(int)

Constraint.After(int, int)

Constraint.DisplayName

Constraint.Arguments

Constraint.Builder

Constraint.And

Constraint.With

Constraint.Or

object.GetType()

object.MemberwiseClone()

object.Equals(object)

object.Equals(object, object)

object.ReferenceEquals(object, object)

object.GetHashCode()

Namespace: NUnit.Framework.Constraints

Assembly: nunit.framework.dll

Syntax

public abstract class ComparisonConstraint : Constraint, IConstraint, IResolveConstraint

Constructors

ComparisonConstraint(object, string)

Initializes a new instance of the ComparisonConstraint class.

Declaration

protected ComparisonConstraint(object expected, string comparisonText)

Parameters

Type	Name	Description
object	expected	The value against which to make a comparison.
string	comparisonText	The text indicating the type of comparison.

Properties

Description

The Description of what this constraint tests, for use in messages and in the ConstraintResult.

Declaration

public override string Description { get; }

Property Value

Type	Description
string

Overrides

Constraint.Description

Percent

Switches the .Within() modifier to interpret its tolerance as a percentage that the actual values is allowed to deviate from the expected value.

Declaration

public ComparisonConstraint Percent { get; }

Property Value

Type	Description
ComparisonConstraint	Self

Methods

ApplyTo<TActual>(TActual)

Test whether the constraint is satisfied by a given value

Declaration

public override ConstraintResult ApplyTo<TActual>(TActual actual)

Parameters

Type	Name	Description
TActual	actual	The value to be tested

Returns

Type	Description
ConstraintResult	A ConstraintResult

Type Parameters

Name	Description
TActual

Overrides

Constraint.ApplyTo<TActual>(TActual)

PerformComparison(ComparisonAdapter, object, object, Tolerance)

Protected function overridden by derived class to actually perform the comparison

Declaration

protected abstract bool PerformComparison(ComparisonAdapter comparer, object actual, object expected, Tolerance tolerance)

Parameters

Type	Name	Description
ComparisonAdapter	comparer
object	actual
object	expected
Tolerance	tolerance

Returns

Type	Description
bool

Using(IComparer)

Modifies the constraint to use an IComparer and returns self

Declaration

public ComparisonConstraint Using(IComparer comparer)

Parameters

Type	Name	Description
IComparer	comparer	The comparer used for comparison tests

Returns

Type	Description
ComparisonConstraint	A constraint modified to use the given comparer

Using<T>(IComparer<T>)

Modifies the constraint to use an IComparer<T> and returns self

Declaration

public ComparisonConstraint Using<T>(IComparer<T> comparer)

Parameters

Type	Name	Description
IComparer<T>	comparer	The comparer used for comparison tests

Returns

Type	Description
ComparisonConstraint	A constraint modified to use the given comparer

Type Parameters

Name	Description
T

Using<T>(Comparison<T>)

Modifies the constraint to use a Comparison<T> and returns self

Declaration

public ComparisonConstraint Using<T>(Comparison<T> comparer)

Parameters

Type	Name	Description
Comparison<T>	comparer	The comparer used for comparison tests

Returns

Type	Description
ComparisonConstraint	A constraint modified to use the given comparer

Type Parameters

Name	Description
T

Within(object)

Set the tolerance for use in this comparison

Declaration

public ComparisonConstraint Within(object amount)

Parameters

Type	Name	Description
object	amount

Returns

Type	Description
ComparisonConstraint

Implements

IConstraint

IResolveConstraint