1 files changed, 70 insertions, 0 deletions
diff --git a/vendor/phpunit/phpunit/src/Framework/Constraint/Cardinality/IsEmpty.php b/vendor/phpunit/phpunit/src/Framework/Constraint/Cardinality/IsEmpty.php
new file mode 100644
index 000000000..e6371d536
--- /dev/null
+++ b/vendor/phpunit/phpunit/src/Framework/Constraint/Cardinality/IsEmpty.php
@@ -0,0 +1,70 @@
+<?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;
+use function gettype;
+use function sprintf;
+use function strpos;
+use Countable;
+use EmptyIterator;
+
+/**
+ * @no-named-arguments Parameter names are not covered by the backward compatibility promise for PHPUnit
+ */
+final class IsEmpty extends Constraint
+{
+    /**
+     * Returns a string representation of the constraint.
+     */
+    public function toString(): string
+    {
+        return 'is empty';
+    }
+
+    /**
+     * Evaluates the constraint for parameter $other. Returns true if the
+     * constraint is met, false otherwise.
+     *
+     * @param mixed $other value or object to evaluate
+     */
+    protected function matches($other): bool
+    {
+        if ($other instanceof EmptyIterator) {
+            return true;
+        }
+
+        if ($other instanceof Countable) {
+            return count($other) === 0;
+        }
+
+        return empty($other);
+    }
+
+    /**
+     * 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 $other evaluated value or object
+     */
+    protected function failureDescription($other): string
+    {
+        $type = gettype($other);
+
+        return sprintf(
+            '%s %s %s',
+            strpos($type, 'a') === 0 || strpos($type, 'o') === 0 ? 'an' : 'a',
+            $type,
+            $this->toString()
+        );
+    }
+}