Move asserts to trait

Offering a trait allows users to easily hook this class into their own
test cases with ease, as an option of usage.

Author: rdohms

src/ArraySubsetAsserts.php

@@ -0,0 +1,44 @@
+<?php
+declare(strict_types=1);
+
+namespace DMS\PHPUnitExtensions\ArraySubset;
+
+use ArrayAccess;
+use DMS\PHPUnitExtensions\ArraySubset\Constraint\ArraySubset;
+use Exception;
+use function is_array;
+use PHPUnit\Framework\Assert as PhpUnitAssert;
+use PHPUnit\Framework\ExpectationFailedException;
+use PHPUnit\Util\InvalidArgumentHelper;
+use SebastianBergmann\RecursionContext\InvalidArgumentException;
+
+trait ArraySubsetAsserts
+{
+    /**
+     * Asserts that an array has a specified subset.
+     *
+     * @param array|ArrayAccess $subset
+     * @param array|ArrayAccess $array
+     *
+     * @throws ExpectationFailedException
+     * @throws InvalidArgumentException
+     * @throws Exception
+     */
+    public static function assertArraySubset($subset, $array, bool $checkForObjectIdentity = false, string $message = ''): void
+    {
+        if (! (is_array($subset) || $subset instanceof ArrayAccess)) {
+            throw InvalidArgumentHelper::factory(
+                1,
+                'array or ArrayAccess'
+            );
+        }
+        if (! (is_array($array) || $array instanceof ArrayAccess)) {
+            throw InvalidArgumentHelper::factory(
+                2,
+                'array or ArrayAccess'
+            );
+        }
+        $constraint = new ArraySubset($subset, $checkForObjectIdentity);
+        PhpUnitAssert::assertThat($array, $constraint, $message);
+    }
+}

src/Assert.php

@@ -3,42 +3,7 @@
 
 namespace DMS\PHPUnitExtensions\ArraySubset;
 
-use ArrayAccess;
-use DMS\PHPUnitExtensions\ArraySubset\Constraint\ArraySubset;
-use Exception;
-use PHPUnit\Framework\Assert as PhpUnitAssert;
-use PHPUnit\Framework\ExpectationFailedException;
-use PHPUnit\Util\InvalidArgumentHelper;
-use SebastianBergmann\RecursionContext\InvalidArgumentException;
-use function is_array;
-
 final class Assert
 {
-    /**
-     * Asserts that an array has a specified subset.
-     *
-     * @param array|ArrayAccess $subset
-     * @param array|ArrayAccess $array
-     *
-     * @throws ExpectationFailedException
-     * @throws InvalidArgumentException
-     * @throws Exception
-     */
-    public static function assertArraySubset($subset, $array, bool $checkForObjectIdentity = false, string $message = ''): void
-    {
-        if (! (is_array($subset) || $subset instanceof ArrayAccess)) {
-            throw InvalidArgumentHelper::factory(
-                1,
-                'array or ArrayAccess'
-            );
-        }
-        if (! (is_array($array) || $array instanceof ArrayAccess)) {
-            throw InvalidArgumentHelper::factory(
-                2,
-                'array or ArrayAccess'
-            );
-        }
-        $constraint = new ArraySubset($subset, $checkForObjectIdentity);
-        PhpUnitAssert::assertThat($array, $constraint, $message);
-    }
+    use ArraySubsetAsserts;
 }