1 files changed, 140 insertions, 0 deletions
diff --git a/vendor/phpunit/phpunit/src/Framework/Constraint/Operator/UnaryOperator.php b/vendor/phpunit/phpunit/src/Framework/Constraint/Operator/UnaryOperator.php
new file mode 100644
index 000000000..0a7a5fa2f
--- /dev/null
+++ b/vendor/phpunit/phpunit/src/Framework/Constraint/Operator/UnaryOperator.php
@@ -0,0 +1,140 @@
+<?php declare(strict_types=1);
+/*
+ * This file is part of PHPUnit.
+ *
+ * (c) Sebastian Bergmann <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace PHPUnit\Framework\Constraint;
+
+use function count;
+
+/**
+ * @no-named-arguments Parameter names are not covered by the backward compatibility promise for PHPUnit
+ */
+abstract class UnaryOperator extends Operator
+{
+    /**
+     * @var Constraint
+     */
+    private $constraint;
+
+    /**
+     * @param Constraint|mixed $constraint
+     */
+    public function __construct($constraint)
+    {
+        $this->constraint = $this->checkConstraint($constraint);
+    }
+
+    /**
+     * Returns the number of operands (constraints).
+     */
+    public function arity(): int
+    {
+        return 1;
+    }
+
+    /**
+     * Returns a string representation of the constraint.
+     */
+    public function toString(): string
+    {
+        $reduced = $this->reduce();
+
+        if ($reduced !== $this) {
+            return $reduced->toString();
+        }
+
+        $constraint = $this->constraint->reduce();
+
+        if ($this->constraintNeedsParentheses($constraint)) {
+            return $this->operator() . '( ' . $constraint->toString() . ' )';
+        }
+
+        $string = $constraint->toStringInContext($this, 0);
+
+        if ($string === '') {
+            return $this->transformString($constraint->toString());
+        }
+
+        return $string;
+    }
+
+    /**
+     * Counts the number of constraint elements.
+     */
+    public function count(): int
+    {
+        return count($this->constraint);
+    }
+
+    /**
+     * 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.
+     *
+     * @param mixed $other evaluated value or object
+     *
+     * @throws \SebastianBergmann\RecursionContext\InvalidArgumentException
+     */
+    protected function failureDescription($other): string
+    {
+        $reduced = $this->reduce();
+
+        if ($reduced !== $this) {
+            return $reduced->failureDescription($other);
+        }
+
+        $constraint = $this->constraint->reduce();
+
+        if ($this->constraintNeedsParentheses($constraint)) {
+            return $this->operator() . '( ' . $constraint->failureDescription($other) . ' )';
+        }
+
+        $string = $constraint->failureDescriptionInContext($this, 0, $other);
+
+        if ($string === '') {
+            return $this->transformString($constraint->failureDescription($other));
+        }
+
+        return $string;
+    }
+
+    /**
+     * Transforms string returned by the memeber constraint's toString() or
+     * failureDescription() such that it reflects constraint's participation in
+     * this expression.
+     *
+     * The method may be overwritten in a subclass to apply default
+     * transformation in case the operand constraint does not provide its own
+     * custom strings via toStringInContext() or failureDescriptionInContext().
+     *
+     * @param string $string the string to be transformed
+     */
+    protected function transformString(string $string): string
+    {
+        return $string;
+    }
+
+    /**
+     * Provides access to $this->constraint for subclasses.
+     */
+    final protected function constraint(): Constraint
+    {
+        return $this->constraint;
+    }
+
+    /**
+     * Returns true if the $constraint needs to be wrapped with parentheses.
+     */
+    protected function constraintNeedsParentheses(Constraint $constraint): bool
+    {
+        $constraint = $constraint->reduce();
+
+        return $constraint instanceof self || parent::constraintNeedsParentheses($constraint);
+    }
+}