Abstract base class for constraints which can be applied to any value.

public count() : int

Counts the number of constraint elements.

public evaluate( $other, string $description = '', bool $returnResult = false)

Evaluates the constraint for parameter $other

If $returnResult is set to false (the default), an exception is thrown
in case of a failure. null is returned otherwise.

If $returnResult is true, the result of the evaluation is returned as
a boolean value instead: true in case of success, false in case of a

  • throws ExpectationFailedException
  • throws SebastianBergmann\RecursionContext\InvalidArgumentException
public abstract PHPUnit\Framework\SelfDescribing::toString() : string

Returns a string representation of the object.

protected additionalFailureDescription( $other) : string

Return additional failure description where needed

The function can be overridden to provide additional failure
information like a diff

    protected exporter() : SebastianBergmann\Exporter\Exporter
    protected fail( $other, $description, ?SebastianBergmann\Comparator\ComparisonFailure $comparisonFailure = NULL) : void

    Throws an exception for the given compared value and test description

    • throws ExpectationFailedException
    • throws SebastianBergmann\RecursionContext\InvalidArgumentException
    protected failureDescription( $other) : string

    Returns the description of the failure

    The beginning of failure messages is "Failed asserting that" in most
    cases. This method should return the second part of that sentence.

    To provide additional failure information additionalFailureDescription
    can be used.

    • throws SebastianBergmann\RecursionContext\InvalidArgumentException
    protected matches( $other) : bool

    Evaluates the constraint for parameter $other. Returns true if the
    constraint is met, false otherwise.

    This method can be overridden to implement the evaluation algorithm.

    • codeCoverageIgnore
    private $exporter
    • var Exporter
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