Added unit tests

Author: Andrei Tomita

References.php

@@ -133,7 +133,7 @@ public function color(string $color): string
      */
     public function colorspace(string $colorspace): string
     {
-        $colorspace = \mb_strtolower(\trim($colorspace));
+        $colorspace = \trim($colorspace);
 
         $references = $this->getColorspaceValuesReference();
 

Tests/CommandTest.php

@@ -68,6 +68,78 @@ public function testResizeImage(): void
         $this->testConvertIdentifyImage($imageOutput, 'JPEG', '100x94+0+0', '8-bit');
     }
 
+    public function testDepthImage(): void
+    {
+        $command = new Command(IMAGEMAGICK_DIR);
+
+        $imageToResize = $this->resourcesDir.'/moon_180.jpg';
+        $imageOutput = $this->resourcesDir.'/outputs/moon.jpg';
+        static::assertFileExists($imageToResize);
+
+        $response = $command
+            ->convert($imageToResize)
+            ->depth(1)
+            ->file($imageOutput, false)
+            ->run()
+        ;
+
+        static::assertFalse($response->hasFailed(), "Errors when testing:\n".$response->getProcess()->getOutput()."\t".$response->getProcess()->getErrorOutput());
+
+        static::assertFileExists($this->resourcesDir.'/outputs/moon.jpg');
+
+        static::assertFalse($response->hasFailed());
+
+        $this->testConvertIdentifyImage($imageOutput, 'JPEG', '180x170+0+0', '8-bit');
+    }
+
+    public function testFlattenImage(): void
+    {
+        $command = new Command(IMAGEMAGICK_DIR);
+
+        $imageToResize = $this->resourcesDir.'/moon_180.jpg';
+        $imageOutput = $this->resourcesDir.'/outputs/moon.jpg';
+        static::assertFileExists($imageToResize);
+
+        $response = $command
+            ->convert($imageToResize)
+            ->flatten()
+            ->file($imageOutput, false)
+            ->run()
+        ;
+
+        static::assertFalse($response->hasFailed(), "Errors when testing:\n".$response->getProcess()->getOutput()."\t".$response->getProcess()->getErrorOutput());
+
+        static::assertFileExists($this->resourcesDir.'/outputs/moon.jpg');
+
+        static::assertFalse($response->hasFailed());
+
+        $this->testConvertIdentifyImage($imageOutput, 'JPEG', '180x170+0+0', '8-bit');
+    }
+
+    public function testColorspaceImage(): void
+    {
+        $command = new Command(IMAGEMAGICK_DIR);
+
+        $imageToResize = $this->resourcesDir.'/moon_180.jpg';
+        $imageOutput = $this->resourcesDir.'/outputs/moon.jpg';
+        static::assertFileExists($imageToResize);
+
+        $response = $command
+            ->convert($imageToResize)
+            ->colorspace('Gray')
+            ->file($imageOutput, false)
+            ->run()
+        ;
+
+        static::assertFalse($response->hasFailed(), "Errors when testing:\n".$response->getProcess()->getOutput()."\t".$response->getProcess()->getErrorOutput());
+
+        static::assertFileExists($this->resourcesDir.'/outputs/moon.jpg');
+
+        static::assertFalse($response->hasFailed());
+
+        $this->testConvertIdentifyImage($imageOutput, 'JPEG', '180x170+0+0', '8-bit');
+    }
+
     /**
      * @dataProvider provideImagesToIdentify
      */

Tests/References/ColorspaceValuesTest.php

@@ -0,0 +1,84 @@
+<?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 ColorspaceValuesTest extends TestCase
+{
+    /**
+     * @var References
+     */
+    private $ref;
+
+    public function __construct($name = null, array $data = [], $dataName = '')
+    {
+        parent::__construct($name, $data, $dataName);
+        $this->ref = new References();
+    }
+
+    /**
+     * @param string $colorspaceValue
+     * @param string $expected
+     *
+     * @dataProvider provideValidColorspaceValues
+     */
+    public function testValidColorspaceValue($colorspaceValue, $expected): void
+    {
+        $validatedType = $this->ref->colorspace($colorspaceValue);
+
+        static::assertSame($expected, $validatedType);
+    }
+
+    public function provideValidColorspaceValues(): ?\Generator
+    {
+        yield ['CMY', 'CMY'];
+        yield ['CMYK', 'CMYK'];
+        yield ['Gray', 'Gray'];
+        yield ['HCL', 'HCL'];
+        yield ['HCLp', 'HCLp'];
+        yield ['HSB', 'HSB'];
+        yield ['HSI', 'HSI'];
+    }
+
+    /**
+     * @dataProvider provideInvalidColorspaceValues
+     */
+    public function testInvalidColorspaceValues($colorspaceValue): void
+    {
+        $colorspaceValue = (string) $colorspaceValue;
+
+        $msg = '';
+        try {
+            $this->ref->colorspace($colorspaceValue);
+        } catch (\InvalidArgumentException $e) {
+            $msg = $e->getMessage();
+        }
+        static::assertContains(
+            \sprintf('The specified colorspace value (%s) is invalid', \trim($colorspaceValue)),
+            $msg
+        );
+    }
+
+    public function provideInvalidColorspaceValues(): ?\Generator
+    {
+        yield [1];
+        yield ['2'];
+        yield ['wow'];
+        yield ['WoW'];
+        yield [''];
+        yield [' '];
+    }
+}