Add support for font color

tests/Spout/Writer/Style/ColorTest.php

@@ -0,0 +1,93 @@
+<?php
+
+namespace Box\Spout\Writer\Style;
+
+/**
+ * Class ColorTest
+ *
+ * @package Box\Spout\Writer\Style
+ */
+class ColorTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * @return array
+     */
+    public function dataProviderForTestRGB()
+    {
+
+        return [
+            [0, 0, 0, Color::BLACK],
+            [255, 255, 255, Color::WHITE],
+            [255, 0, 0, Color::RED],
+            [192, 0, 0, Color::DARK_RED],
+            [255, 192, 0, Color::ORANGE],
+            [255, 255, 0, Color::YELLOW],
+            [146, 208, 64, Color::LIGHT_GREEN],
+            [0, 176, 80, Color::GREEN],
+            [0, 176, 224, Color::LIGHT_BLUE],
+            [0, 112, 192, Color::BLUE],
+            [0, 32, 96, Color::DARK_BLUE],
+            [112, 48, 160, Color::PURPLE],
+            [0, 0, 0, 'FF000000'],
+            [255, 255, 255, 'FFFFFFFF'],
+            [255, 0, 0, 'FFFF0000'],
+            [0, 128, 0, 'FF008000'],
+            [0, 255, 0, 'FF00FF00'],
+            [0, 0, 255, 'FF0000FF'],
+            [128, 22, 43, 'FF80162B'],
+        ];
+    }
+
+    /**
+     * @dataProvider dataProviderForTestRGB
+     *
+     * @param int $red
+     * @param int $green
+     * @param int $blue
+     * @param string $expectedColor
+     * @return void
+     */
+    public function testRGB($red, $green, $blue, $expectedColor)
+    {
+        $color = Color::rgb($red, $green, $blue);
+        $this->assertEquals($expectedColor, $color);
+    }
+
+    /**
+     * @return array
+     */
+    public function dataProviderForTestRGBAInvalidColorComponents()
+    {
+        return [
+            [-1, 0, 0],
+            [0, -1, 0],
+            [0, 0, -1],
+            [999, 0, 0],
+            [0, 999, 0],
+            [0, 0, 999],
+            [null, 0, 0],
+            [0, null, 0],
+            [0, 0, null],
+            ['1', 0, 0],
+            [0, '1', 0],
+            [0, 0, '1'],
+            [true, 0, 0],
+            [0, true, 0],
+            [0, 0, true],
+        ];
+    }
+
+    /**
+     * @dataProvider dataProviderForTestRGBAInvalidColorComponents
+     * @expectedException \Box\Spout\Writer\Exception\InvalidColorException
+     *
+     * @param int $red
+     * @param int $green
+     * @param int $blue
+     * @return void
+     */
+    public function testRGBInvalidColorComponents($red, $green, $blue)
+    {
+        Color::rgb($red, $green, $blue);
+    }
+}

tests/Spout/Writer/XLSX/WriterWithStyleTest.php

@@ -4,6 +4,8 @@ namespace Box\Spout\Writer\XLSX;
 
 use Box\Spout\Common\Type;
 use Box\Spout\TestUsingResource;
+use Box\Spout\Writer\Style\Color;
+use Box\Spout\Writer\Style\Style;
 use Box\Spout\Writer\Style\StyleBuilder;
 use Box\Spout\Writer\WriterFactory;
 
@@ -110,6 +112,7 @@ class WriterWithStyleTest extends \PHPUnit_Framework_TestCase
             ->build();
         $style2 = (new StyleBuilder())
             ->setFontSize(15)
+            ->setFontColor(Color::RED)
             ->setFontName('Arial')
             ->build();
 
@@ -123,24 +126,27 @@ class WriterWithStyleTest extends \PHPUnit_Framework_TestCase
 
         // First font should be the default one
         $defaultFontElement = $fontElements->item(0);
-        $this->assertChildrenNumEquals(2, $defaultFontElement, 'The default font should only have 2 properties.');
+        $this->assertChildrenNumEquals(3, $defaultFontElement, 'The default font should only have 3 properties.');
         $this->assertFirstChildHasAttributeEquals((string) Writer::DEFAULT_FONT_SIZE, $defaultFontElement, 'sz', 'val');
+        $this->assertFirstChildHasAttributeEquals(Style::DEFAULT_FONT_COLOR, $defaultFontElement, 'color', 'rgb');
         $this->assertFirstChildHasAttributeEquals(Writer::DEFAULT_FONT_NAME, $defaultFontElement, 'name', 'val');
 
         // Second font should contain data from the first created style
         $secondFontElement = $fontElements->item(1);
-        $this->assertChildrenNumEquals(6, $secondFontElement, 'The font should only have 6 properties (4 custom styles + 2 default styles).');
+        $this->assertChildrenNumEquals(7, $secondFontElement, 'The font should only have 7 properties (4 custom styles + 3 default styles).');
         $this->assertChildExists($secondFontElement, 'b');
         $this->assertChildExists($secondFontElement, 'i');
         $this->assertChildExists($secondFontElement, 'u');
         $this->assertChildExists($secondFontElement, 'strike');
         $this->assertFirstChildHasAttributeEquals((string) Writer::DEFAULT_FONT_SIZE, $secondFontElement, 'sz', 'val');
+        $this->assertFirstChildHasAttributeEquals(Style::DEFAULT_FONT_COLOR, $secondFontElement, 'color', 'rgb');
         $this->assertFirstChildHasAttributeEquals(Writer::DEFAULT_FONT_NAME, $secondFontElement, 'name', 'val');
 
         // Third font should contain data from the second created style
         $thirdFontElement = $fontElements->item(2);
-        $this->assertChildrenNumEquals(2, $thirdFontElement, 'The font should only have 2 properties.');
+        $this->assertChildrenNumEquals(3, $thirdFontElement, 'The font should only have 3 properties.');
         $this->assertFirstChildHasAttributeEquals('15', $thirdFontElement, 'sz', 'val');
+        $this->assertFirstChildHasAttributeEquals(Color::RED, $thirdFontElement, 'color', 'rgb');
         $this->assertFirstChildHasAttributeEquals('Arial', $thirdFontElement, 'name', 'val');
     }