Documentation

BinaryOperator extends Operator
in package

AbstractYes
Tags
no-named-arguments

Parameter names are not covered by the backward compatibility promise for PHPUnit

Table of Contents

Properties

$constraints  : array<string|int, Constraint>
$exporter  : Exporter|null

Methods

arity()  : int
Returns the number of operands (constraints).
count()  : int
Counts the number of constraint elements.
evaluate()  : bool|null
Evaluates the constraint for parameter $other.
fromConstraints()  : self
operator()  : string
Returns the name of this operator.
precedence()  : int
Returns this operator's precedence.
setConstraints()  : void
toString()  : string
Returns a string representation of the constraint.
additionalFailureDescription()  : string
Return additional failure description where needed.
checkConstraint()  : Constraint
Validates $constraint argument.
constraintNeedsParentheses()  : bool
Returns true if the $constraint needs to be wrapped with braces.
constraints()  : array<string|int, mixed>
Returns the nested constraints.
exporter()  : Exporter
fail()  : void
Throws an exception for the given compared value and test description.
failureDescription()  : string
Returns the description of the failure.
failureDescriptionInContext()  : string
Returns the description of the failure when this constraint appears in context of an $operator expression.
matches()  : bool
Evaluates the constraint for parameter $other. Returns true if the constraint is met, false otherwise.
reduce()  : Constraint
Reduces the sub-expression starting at $this by skipping degenerate sub-expression and returns first descendant constraint that starts a non-reducible sub-expression.
toStringInContext()  : string
Returns a custom string representation of the constraint object when it appears in context of an $operator expression.
constraintToString()  : string
Returns string representation of given operand in context of this operator.

Properties

Methods

arity()

Returns the number of operands (constraints).

public final arity() : int
Return values
int

count()

Counts the number of constraint elements.

public count() : int
Return values
int

evaluate()

Evaluates the constraint for parameter $other.

public evaluate(mixed $other[, string $description = '' ][, bool $returnResult = false ]) : bool|null

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 failure.

Parameters
$other : mixed
$description : string = ''
$returnResult : bool = false
Tags
throws
ExpectationFailedException
throws
InvalidArgumentException
Return values
bool|null

operator()

Returns the name of this operator.

public abstract operator() : string
Return values
string

setConstraints()

public setConstraints(array<string|int, mixed> $constraints) : void
Parameters
$constraints : array<string|int, mixed>

toString()

Returns a string representation of the constraint.

public toString() : string
Return values
string

additionalFailureDescription()

Return additional failure description where needed.

protected additionalFailureDescription(mixed $other) : string

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

Parameters
$other : mixed

evaluated value or object

Return values
string

checkConstraint()

Validates $constraint argument.

protected checkConstraint(mixed $constraint) : Constraint
Parameters
$constraint : mixed
Return values
Constraint

constraintNeedsParentheses()

Returns true if the $constraint needs to be wrapped with braces.

protected final constraintNeedsParentheses(Constraint $constraint) : bool
Parameters
$constraint : Constraint
Return values
bool

constraints()

Returns the nested constraints.

protected final constraints() : array<string|int, mixed>
Return values
array<string|int, mixed>

fail()

Throws an exception for the given compared value and test description.

protected fail(mixed $other, string $description[, ComparisonFailure|null $comparisonFailure = null ]) : void
Parameters
$other : mixed

evaluated value or object

$description : string

Additional information about the test

$comparisonFailure : ComparisonFailure|null = null
Tags
throws
ExpectationFailedException
throws
InvalidArgumentException
psalm-return

never-return

failureDescription()

Returns the description of the failure.

protected failureDescription(mixed $other) : string

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.

Parameters
$other : mixed

evaluated value or object

Tags
throws
InvalidArgumentException
Return values
string

failureDescriptionInContext()

Returns the description of the failure when this constraint appears in context of an $operator expression.

protected failureDescriptionInContext(Operator $operator, mixed $role, mixed $other) : string

The purpose of this method is to provide meaningful failure description in context of operators such as LogicalNot. Native PHPUnit constraints are supported out of the box by LogicalNot, but externally developed ones had no way to provide correct messages in this context.

The method shall return empty string, when it does not handle customization by itself.

Parameters
$operator : Operator

the $operator of the expression

$role : mixed

role of $this constraint in the $operator expression

$other : mixed

evaluated value or object

Return values
string

matches()

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

protected matches(mixed $other) : bool

This method can be overridden to implement the evaluation algorithm.

Parameters
$other : mixed

value or object to evaluate

Tags
codeCoverageIgnore
Return values
bool

reduce()

Reduces the sub-expression starting at $this by skipping degenerate sub-expression and returns first descendant constraint that starts a non-reducible sub-expression.

protected reduce() : Constraint

See Constraint::reduce() for more.

Return values
Constraint

toStringInContext()

Returns a custom string representation of the constraint object when it appears in context of an $operator expression.

protected toStringInContext(Operator $operator, mixed $role) : string

The purpose of this method is to provide meaningful descriptive string in context of operators such as LogicalNot. Native PHPUnit constraints are supported out of the box by LogicalNot, but externally developed ones had no way to provide correct strings in this context.

The method shall return empty string, when it does not handle customization by itself.

Parameters
$operator : Operator

the $operator of the expression

$role : mixed

role of $this constraint in the $operator expression

Return values
string

constraintToString()

Returns string representation of given operand in context of this operator.

private constraintToString(Constraint $constraint, int $position) : string
Parameters
$constraint : Constraint

operand constraint

$position : int

position of $constraint in this expression

Return values
string 

        

        
    




    

    

                                

                

                                
    

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