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

tests/Exception/Reflection/MissingChildClassesExceptionTest.php

@@ -0,0 +1,65 @@
+<?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\Exception\Reflection;
+
+use Generator;
+use Meritoo\Common\Exception\Reflection\MissingChildClassesException;
+use Meritoo\Common\Test\Base\BaseTestCase;
+use Meritoo\Common\Type\OopVisibilityType;
+
+/**
+ * Test case of an exception used while given class has no child classes
+ *
+ * @author    Krzysztof Niziol <krzysztof.niziol@meritoo.pl>
+ * @copyright Meritoo.pl
+ */
+class MissingChildClassesExceptionTest extends BaseTestCase
+{
+    public function testConstructorVisibilityAndArguments()
+    {
+        static::assertConstructorVisibilityAndArguments(MissingChildClassesException::class, OopVisibilityType::IS_PUBLIC, 1, 1);
+    }
+
+    /**
+     * @param array|object|string $parentClass     Class that hasn't child classes, but it should. An array of objects,
+     *                                             strings, object or string.
+     * @param string              $expectedMessage Expected exception's message
+     *
+     * @dataProvider provideParentClass
+     */
+    public function testConstructorMessage($parentClass, $expectedMessage)
+    {
+        $exception = new MissingChildClassesException($parentClass);
+        static::assertEquals($expectedMessage, $exception->getMessage());
+    }
+
+    /**
+     * Provides name of class that hasn't child classes, but it should, and expected exception's message
+     *
+     * @return Generator
+     */
+    public function provideParentClass()
+    {
+        $template = 'The \'%s\' class requires one child class at least who will extend her (maybe is an abstract'
+            . ' class), but the child classes are missing. Did you forget to extend this class?';
+
+        yield[
+            MissingChildClassesException::class,
+            sprintf($template, MissingChildClassesException::class),
+        ];
+
+        yield[
+            [
+                new \stdClass(),
+                new \stdClass(),
+            ],
+            sprintf($template, \stdClass::class),
+        ];
+    }
+}