First stab at #135 - Add borders (#200)

Fixes #135

Added border support for ODS and XLSX files.
Updated README.

tests/Spout/Writer/Style/BorderTest.php

@@ -0,0 +1,110 @@
+<?php
+
+namespace Box\Spout\Writer\Style;
+
+class BorderTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * @return void
+     */
+    public function testValidInstance()
+    {
+        $noConstructorParams = new Border();
+        $withConstructorParams = new Border([
+            new BorderPart(Border::LEFT)
+        ]);
+    }
+
+    /**
+     * @expectedException \Box\Spout\Writer\Exception\Border\InvalidNameException
+     */
+    public function testInvalidBorderPart()
+    {
+        $invalidBorderPart = new BorderPart('invalid');
+    }
+
+    /**
+     * @expectedException \Box\Spout\Writer\Exception\Border\InvalidStyleException
+     */
+    public function testInvalidBorderPartStyle()
+    {
+        $invalidBorderPartStyle = new BorderPart(Border::LEFT, Color::BLACK, Border::WIDTH_THIN, 'invalid');
+    }
+
+    /**
+     * @expectedException \Box\Spout\Writer\Exception\Border\InvalidWidthException
+     */
+    public function testInvalidBorderPartWidth()
+    {
+        $invalidBorderPartStyle = new BorderPart(Border::LEFT, Color::BLACK, 'invalid', Border::STYLE_DASHED);
+    }
+
+    /**
+     * @return void
+     */
+    public function testNotMoreThanFourPartsPossible()
+    {
+        $border = new Border();
+        $border
+            ->addPart(new BorderPart(Border::LEFT))
+            ->addPart(new BorderPart(Border::RIGHT))
+            ->addPart(new BorderPart(Border::TOP))
+            ->addPart(new BorderPart(Border::BOTTOM))
+            ->addPart(new BorderPart(Border::LEFT));
+
+        $this->assertEquals(4, count($border->getParts()), 'There should never be more than 4 border parts');
+    }
+
+    /**
+     * @return void
+     */
+    public function testSetParts()
+    {
+        $border = new Border();
+        $border->setParts([
+            new BorderPart(Border::LEFT)
+        ]);
+
+        $this->assertEquals(1, count($border->getParts()), 'It should be possible to set the border parts');
+    }
+
+    /**
+     * @return void
+     */
+    public function testBorderBuilderFluent()
+    {
+        $border = (new BorderBuilder())
+            ->setBorderBottom()
+            ->setBorderTop()
+            ->setBorderLeft()
+            ->setBorderRight()
+            ->build();
+        $this->assertEquals(4, count($border->getParts()), 'The border builder exposes a fluent interface');
+    }
+
+    /**
+     * :D :S
+     * @return void
+     */
+    public function testAnyCombinationOfAllowedBorderPartsParams()
+    {
+        $color = Color::BLACK;
+        foreach (BorderPart::getAllowedNames() as $allowedName) {
+            foreach (BorderPart::getAllowedStyles() as $allowedStyle) {
+                foreach (BorderPart::getAllowedWidths() as $allowedWidth) {
+                    $borderPart = new BorderPart($allowedName, $color, $allowedWidth, $allowedStyle);
+                    $border = new Border();
+                    $border->addPart($borderPart);
+                    $this->assertEquals(1, count($border->getParts()));
+
+                    /** @var $part BorderPart */
+                    $part = $border->getParts()[$allowedName];
+
+                    $this->assertEquals($allowedStyle, $part->getStyle());
+                    $this->assertEquals($allowedWidth, $part->getWidth());
+                    $this->assertEquals($color, $part->getColor());
+                }
+            }
+        }
+    }
+}

tests/Spout/Writer/Style/StyleTest.php

@@ -129,4 +129,32 @@ class StyleTest extends \PHPUnit_Framework_TestCase
 
         $this->assertTrue($currentStyle->serialize() === $mergedStyle->serialize());
     }
+
+    /**
+     * @return void
+     */
+    public function testStyleBuilderShouldApplyBorders()
+    {
+        $border = (new BorderBuilder())
+            ->setBorderBottom()
+            ->build();
+        $style = (new StyleBuilder())->setBorder($border)->build();
+        $this->assertTrue($style->shouldApplyBorder());
+    }
+
+    /**
+     * @return void
+     */
+    public function testStyleBuilderShouldMergeBorders()
+    {
+        $border = (new BorderBuilder())->setBorderBottom(Color::RED, Border::WIDTH_THIN, Border::STYLE_DASHED)->build();
+
+        $baseStyle = (new StyleBuilder())->setBorder($border)->build();
+        $currentStyle = (new StyleBuilder())->build();
+        $mergedStyle = $currentStyle->mergeWith($baseStyle);
+
+        $this->assertEquals(null, $currentStyle->getBorder(), 'Current style has no border');
+        $this->assertInstanceOf('Box\Spout\Writer\Style\Border', $baseStyle->getBorder(), 'Base style has a border');
+        $this->assertInstanceOf('Box\Spout\Writer\Style\Border', $mergedStyle->getBorder(), 'Merged style has a border');
+    }
 }