Add tests

src/Colors/Rgb/Channels/Blue.php

@@ -4,5 +4,4 @@ namespace Intervention\Image\Colors\Rgb\Channels;
 
 class Blue extends Red
 {
-    //
 }

src/Colors/Rgb/Channels/Green.php

@@ -4,5 +4,4 @@ namespace Intervention\Image\Colors\Rgb\Channels;
 
 class Green extends Red
 {
-    //
 }

tests/Colors/Cmyk/ChannelTest.php

@@ -33,6 +33,25 @@ class ChannelTest extends TestCase
         $channel = new Channel(normalized: 2);
     }
 
+    public function testConstructorFail(): void
+    {
+        $this->expectException(ColorException::class);
+        new Channel(200);
+    }
+
+    public function testToInt(): void
+    {
+        $channel = new Channel(10);
+        $this->assertEquals(10, $channel->toInt());
+    }
+
+    public function testToString(): void
+    {
+        $channel = new Channel(10);
+        $this->assertEquals("10", $channel->toString());
+        $this->assertEquals("10", (string) $channel);
+    }
+
     public function testValue(): void
     {
         $channel = new Channel(10);

tests/Colors/Cmyk/ColorTest.php

@@ -8,6 +8,7 @@ use Intervention\Image\Colors\Cmyk\Channels\Magenta;
 use Intervention\Image\Colors\Cmyk\Channels\Yellow;
 use Intervention\Image\Colors\Cmyk\Color as Color;
 use Intervention\Image\Colors\Cmyk\Colorspace;
+use Intervention\Image\Exceptions\ColorException;
 use Intervention\Image\Tests\TestCase;
 
 /**
@@ -22,6 +23,12 @@ class ColorTest extends TestCase
         $this->assertInstanceOf(Color::class, $color);
     }
 
+    public function testCreate(): void
+    {
+        $color = Color::create('cmyk(10, 20, 30, 40)');
+        $this->assertInstanceOf(Color::class, $color);
+    }
+
     public function testColorspace(): void
     {
         $color = new Color(0, 0, 0, 0);
@@ -43,6 +50,13 @@ class ColorTest extends TestCase
         $this->assertEquals(10, $channel->value());
     }
 
+    public function testChannelNotFound(): void
+    {
+        $color = new Color(10, 20, 30, 30);
+        $this->expectException(ColorException::class);
+        $color->channel('none');
+    }
+
     public function testCyanMagentaYellowKey(): void
     {
         $color = new Color(10, 20, 30, 40);
@@ -62,6 +76,22 @@ class ColorTest extends TestCase
         $this->assertEquals([10, 20, 30, 40], $color->toArray());
     }
 
+    public function testToHex(): void
+    {
+        $color = new Color(0, 73, 100, 0);
+        $this->assertEquals('ff4400', $color->toHex());
+        $this->assertEquals('#ff4400', $color->toHex('#'));
+    }
+
+    public function testIsGreyscale(): void
+    {
+        $color = new Color(0, 73, 100, 0);
+        $this->assertFalse($color->isGreyscale());
+
+        $color = new Color(0, 0, 0, 50);
+        $this->assertTrue($color->isGreyscale());
+    }
+
     public function testNormalize(): void
     {
         $color = new Color(100, 50, 20, 0);

tests/Colors/Hsl/ChannelTest.php

@@ -33,6 +33,25 @@ class ChannelTest extends TestCase
         $channel = new Hue(normalized: 2);
     }
 
+    public function testConstructorFail(): void
+    {
+        $this->expectException(ColorException::class);
+        new Hue(400);
+    }
+
+    public function testToInt(): void
+    {
+        $channel = new Hue(10);
+        $this->assertEquals(10, $channel->toInt());
+    }
+
+    public function testToString(): void
+    {
+        $channel = new Hue(10);
+        $this->assertEquals("10", $channel->toString());
+        $this->assertEquals("10", (string) $channel);
+    }
+
     public function testValue(): void
     {
         $channel = new Hue(10);

tests/Colors/Hsl/Channels/SaturationTest.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace Intervention\Image\Tests\Colors\Hsl\Channels;
+
+use Intervention\Image\Colors\Hsl\Channels\Saturation;
+use Intervention\Image\Tests\TestCase;
+
+class SaturationTest extends TestCase
+{
+    public function testMinMax(): void
+    {
+        $saturation = new Saturation(0);
+        $this->assertEquals(0, $saturation->min());
+        $this->assertEquals(100, $saturation->max());
+    }
+}

tests/Colors/Hsl/ColorTest.php

@@ -7,6 +7,7 @@ use Intervention\Image\Colors\Hsl\Channels\Luminance;
 use Intervention\Image\Colors\Hsl\Channels\Saturation;
 use Intervention\Image\Colors\Hsl\Color;
 use Intervention\Image\Colors\Hsl\Colorspace;
+use Intervention\Image\Exceptions\ColorException;
 use Intervention\Image\Tests\TestCase;
 
 /**
@@ -20,6 +21,12 @@ class ColorTest extends TestCase
         $this->assertInstanceOf(Color::class, $color);
     }
 
+    public function testCreate(): void
+    {
+        $color = Color::create('hsl(10, 20, 30)');
+        $this->assertInstanceOf(Color::class, $color);
+    }
+
     public function testColorspace(): void
     {
         $color = new Color(0, 0, 0);
@@ -41,6 +48,13 @@ class ColorTest extends TestCase
         $this->assertEquals(10, $channel->value());
     }
 
+    public function testChannelNotFound(): void
+    {
+        $color = new Color(10, 20, 30);
+        $this->expectException(ColorException::class);
+        $color->channel('none');
+    }
+
     public function testHueSaturationLuminanceKey(): void
     {
         $color = new Color(10, 20, 30);
@@ -58,6 +72,12 @@ class ColorTest extends TestCase
         $this->assertEquals([10, 20, 30], $color->toArray());
     }
 
+    public function testToHex(): void
+    {
+        $color = new Color(16, 100, 50);
+        $this->assertEquals('ff4400', $color->toHex());
+    }
+
     public function testNormalize(): void
     {
         $color = new Color(180, 50, 25);

tests/Colors/Hsv/ChannelTest.php

@@ -34,6 +34,25 @@ class ChannelTest extends TestCase
         $channel = new Hue(normalized: 2);
     }
 
+    public function testConstructorFail(): void
+    {
+        $this->expectException(ColorException::class);
+        new Hue(400);
+    }
+
+    public function testToInt(): void
+    {
+        $channel = new Hue(10);
+        $this->assertEquals(10, $channel->toInt());
+    }
+
+    public function testToString(): void
+    {
+        $channel = new Hue(10);
+        $this->assertEquals("10", $channel->toString());
+        $this->assertEquals("10", (string) $channel);
+    }
+
     public function testValue(): void
     {
         $channel = new Hue(10);

tests/Colors/Hsv/Channels/SaturationTest.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace Intervention\Image\Tests\Colors\Hsv\Channels;
+
+use Intervention\Image\Colors\Hsv\Channels\Saturation;
+use Intervention\Image\Tests\TestCase;
+
+class SaturationTest extends TestCase
+{
+    public function testMinMax(): void
+    {
+        $saturation = new Saturation(0);
+        $this->assertEquals(0, $saturation->min());
+        $this->assertEquals(100, $saturation->max());
+    }
+}

tests/Colors/Hsv/Channels/ValueTest.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace Intervention\Image\Tests\Colors\Hsv\Channels;
+
+use Intervention\Image\Colors\Hsv\Channels\Value;
+use Intervention\Image\Tests\TestCase;
+
+class ValueTest extends TestCase
+{
+    public function testMinMax(): void
+    {
+        $saturation = new Value(0);
+        $this->assertEquals(0, $saturation->min());
+        $this->assertEquals(100, $saturation->max());
+    }
+}

tests/Colors/Hsv/ColorTest.php

@@ -7,6 +7,7 @@ use Intervention\Image\Colors\Hsv\Channels\Saturation;
 use Intervention\Image\Colors\Hsv\Channels\Value;
 use Intervention\Image\Colors\Hsv\Color as Color;
 use Intervention\Image\Colors\Hsv\Colorspace;
+use Intervention\Image\Exceptions\ColorException;
 use Intervention\Image\Tests\TestCase;
 
 /**
@@ -20,6 +21,12 @@ class ColorTest extends TestCase
         $this->assertInstanceOf(Color::class, $color);
     }
 
+    public function testCreate(): void
+    {
+        $color = Color::create('hsv(10, 20, 30)');
+        $this->assertInstanceOf(Color::class, $color);
+    }
+
     public function testColorspace(): void
     {
         $color = new Color(0, 0, 0);
@@ -41,6 +48,13 @@ class ColorTest extends TestCase
         $this->assertEquals(10, $channel->value());
     }
 
+    public function testChannelNotFound(): void
+    {
+        $color = new Color(10, 20, 30);
+        $this->expectException(ColorException::class);
+        $color->channel('none');
+    }
+
     public function testHueSaturationValueKey(): void
     {
         $color = new Color(10, 20, 30);
@@ -58,6 +72,12 @@ class ColorTest extends TestCase
         $this->assertEquals([10, 20, 30], $color->toArray());
     }
 
+    public function testToHex(): void
+    {
+        $color = new Color(16, 100, 100);
+        $this->assertEquals('ff4400', $color->toHex());
+    }
+
     public function testNormalize(): void
     {
         $color = new Color(180, 50, 25);

tests/Colors/Rgb/ChannelTest.php

@@ -32,6 +32,25 @@ class ChannelTest extends TestCase
         $channel = new Channel(normalized: 2);
     }
 
+    public function testConstructorFail(): void
+    {
+        $this->expectException(ColorException::class);
+        new Channel(300);
+    }
+
+    public function testToInt(): void
+    {
+        $channel = new Channel(255);
+        $this->assertEquals(255, $channel->toInt());
+    }
+
+    public function testToString(): void
+    {
+        $channel = new Channel(10);
+        $this->assertEquals("10", $channel->toString());
+        $this->assertEquals("10", (string) $channel);
+    }
+
     public function testValue(): void
     {
         $channel = new Channel(10);

tests/Colors/Rgb/Channels/AlphaTest.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace Intervention\Image\Tests\Colors\Rgb\Channels;
+
+use Intervention\Image\Colors\Rgb\Channels\Alpha;
+use Intervention\Image\Tests\TestCase;
+
+/**
+ * @covers \Intervention\Image\Colors\Rgb\Channels\Alpha
+ */
+class AlphaTest extends TestCase
+{
+    public function testToString(): void
+    {
+        $alpha = new Alpha(255 / 3);
+        $this->assertEquals('0.333333', $alpha->toString());
+        $this->assertEquals('0.333333', (string) $alpha);
+    }
+}

tests/Colors/Rgb/ColorTest.php

@@ -9,6 +9,7 @@ use Intervention\Image\Colors\Rgb\Channels\Green;
 use Intervention\Image\Colors\Rgb\Channels\Blue;
 use Intervention\Image\Colors\Rgb\Color as Color;
 use Intervention\Image\Colors\Rgb\Colorspace as RgbColorspace;
+use Intervention\Image\Exceptions\ColorException;
 use Intervention\Image\Tests\TestCase;
 
 /**
@@ -58,6 +59,13 @@ class ColorTest extends TestCase
         $this->assertEquals(10, $channel->value());
     }
 
+    public function testChannelNotFound(): void
+    {
+        $color = new Color(10, 20, 30);
+        $this->expectException(ColorException::class);
+        $color->channel('none');
+    }
+
     public function testRedGreenBlue(): void
     {
         $color = new Color(10, 20, 30);
@@ -80,6 +88,9 @@ class ColorTest extends TestCase
         $color = new Color(181, 55, 23);
         $this->assertEquals('b53717', $color->toHex());
         $this->assertEquals('#b53717', $color->toHex('#'));
+
+        $color = new Color(181, 55, 23, 51);
+        $this->assertEquals('b5371733', $color->toHex());
     }
 
     public function testNormalize(): void
@@ -126,4 +137,13 @@ class ColorTest extends TestCase
         $this->assertInstanceOf(CmykColor::class, $converted);
         $this->assertEquals([0, 20, 20, 0], $converted->toArray());
     }
+
+    public function testIsGreyscale(): void
+    {
+        $color = new Color(255, 0, 100);
+        $this->assertFalse($color->isGreyscale());
+
+        $color = new Color(50, 50, 50);
+        $this->assertTrue($color->isGreyscale());
+    }
 }