Add tests for References::rotation

Author: Pierstoval

Tests/References/RotationTest.php

@@ -0,0 +1,63 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the OrbitaleImageMagickPHP package.
+ *
+ * (c) Alexandre Rock Ancelet <alex@orbitale.io>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Orbitale\Component\ImageMagick\Tests\References;
+
+use Orbitale\Component\ImageMagick\References;
+use PHPUnit\Framework\TestCase;
+
+class RotationTest extends TestCase
+{
+    /**
+     * @dataProvider provideValidRotationValues
+     */
+    public function testValidRotation(string $value)
+    {
+        static::assertSame(\trim($value), (new References())->rotation($value));
+    }
+
+    public function provideValidRotationValues(): \Generator
+    {
+        yield ['1'];
+        yield ['-1'];
+        yield ['   360'];
+        yield ['-360    '];
+        yield ['1>'];
+        yield ['-1>'];
+        yield ['360.5>'];
+        yield ['-360.5>'];
+        yield ['1<'];
+        yield ['-1<'];
+        yield ['   360<'];
+        yield ['-360<   '];
+    }
+    /**
+     * @dataProvider provideInvalidRotationValues
+     */
+    public function testInvalidRotation(string $value)
+    {
+        $this->expectException(\InvalidArgumentException::class);
+        $this->expectExceptionMessage(\sprintf('The specified rotate parameter (%s) is invalid.'."\n".'Please refer to ImageMagick command line documentation about the "-rotate" option:'."\n%s", \trim($value), 'http://www.imagemagick.org/script/command-line-options.php#rotate'));
+
+        static::assertSame($value, (new References())->rotation($value));
+    }
+
+    public function provideInvalidRotationValues(): \Generator
+    {
+        yield ['a'];
+        yield ['-1a'];
+        yield ['   abc   '];
+        yield ['0,5'];
+        yield [''];
+    }
+}