composer.json - move tests-related classes to "autoload-dev" section (used for development purposes only and avoid polluting the autoloader in production)

tests/Utilities/GeneratorUtilityTest.php

@@ -0,0 +1,61 @@
+<?php
+
+/**
+ * (c) Meritoo.pl, http://www.meritoo.pl
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Meritoo\Common\Test\Utilities;
+
+use Meritoo\Common\Test\Base\BaseTestCase;
+use Meritoo\Common\Utilities\GeneratorUtility;
+
+/**
+ * Test case of the useful methods for the Generator class
+ *
+ * @author    Krzysztof Niziol <krzysztof.niziol@meritoo.pl>
+ * @copyright Meritoo.pl
+ */
+class GeneratorUtilityTest extends BaseTestCase
+{
+    public function verifyConstructor()
+    {
+        static::assertHasNoConstructor(GeneratorUtility::class);
+    }
+
+    public function testGetGeneratorElements()
+    {
+        /*
+         * Generator that provides boolean value
+         */
+        $elements = [
+            [false],
+            [true],
+        ];
+
+        $generator = $this->provideBooleanValue();
+        self::assertEquals($elements, GeneratorUtility::getGeneratorElements($generator));
+
+        $elements = [
+            [''],
+            ['   '],
+            [null],
+            [0],
+            [false],
+            [[]],
+        ];
+
+        /*
+         * Generator that provides an empty value
+         */
+        $generator = $this->provideEmptyValue();
+        self::assertEquals($elements, GeneratorUtility::getGeneratorElements($generator));
+
+        /*
+         * Generator that provides instance of DateTime class
+         */
+        $generator = $this->provideDateTimeInstance();
+        self::assertCount(4, GeneratorUtility::getGeneratorElements($generator));
+    }
+}