added widget Breadcrumbs unit tests.

tests/unit/framework/widgets/BreadcrumbsTest.php

+<?php
+
+namespace yiiunit\framework\widgets;
+
+use Yii;
+use yii\widgets\Breadcrumbs;
+
+/**
+ * @author Nelson J Morais <njmorais@gmail.com>
+ * 
+ * @group widgets
+ */
+class BreadcrumbsTest extends \yiiunit\TestCase
+{
+    private $breadcrumbs;
+    private $app;
+    
+    public function setUp()
+    {
+        $this->app = $this->mockApplication();
+        Yii::setAlias('@testWeb', '/');
+        Yii::setAlias('@testWebRoot', '@yiiunit/data/web');        
+        $this->breadcrumbs = new Breadcrumbs();
+    }
+    
+    public function testEmptyLinks()
+    {
+        $this->assertNull($this->breadcrumbs->run());
+    }
+    
+    public function testHomeLinkFalse()
+    {
+        $this->breadcrumbs->homeLink = false;
+        $this->breadcrumbs->links = ['label' => 'My Home Page', 'url' => 'http://my.example.com/yii2/link/page'];
+        
+        $expectedHtml = "<ul class=\"breadcrumb\"><li class=\"active\">My Home Page</li>\n"
+            . "<li class=\"active\">http://my.example.com/yii2/link/page</li>\n"
+            . "</ul>";
+        
+        ob_start();
+        $this->breadcrumbs->run();
+        $actualHtml = ob_get_contents();
+        ob_end_clean();
+        
+        $this->assertEquals($expectedHtml, $actualHtml);
+    }
+
+    
+    public function testHomeLink()
+    { 
+        $this->breadcrumbs->homeLink = ['label' => 'home-link'];
+        $this->breadcrumbs->links = ['label' => 'My Home Page', 'url' => 'http://my.example.com/yii2/link/page'];
+        
+        $expectedHtml = "<ul class=\"breadcrumb\"><li>home-link</li>\n"
+            . "<li class=\"active\">My Home Page</li>\n"
+            . "<li class=\"active\">http://my.example.com/yii2/link/page</li>\n"
+            . "</ul>";
+        
+        ob_start();
+        $this->breadcrumbs->run();
+        $actualHtml = ob_get_contents();
+        ob_end_clean();
+        
+        $this->assertEquals($expectedHtml, $actualHtml);
+    }
+    
+    public function testRenderItemException()
+    {
+        $link = ['url' => 'http://localhost/yii2'];
+        $method = $this->reflectMethod();
+        $this->setExpectedException('yii\base\InvalidConfigException');
+        $method->invoke($this->breadcrumbs, $link, $this->breadcrumbs->itemTemplate);
+    }
+    
+    public function testRenderItemLabelOnly()
+    {
+        $link = ['label' => 'My-<br>Test-Label'];
+        $method = $this->reflectMethod();
+        $encodedValue = $method->invoke($this->breadcrumbs, $link, $this->breadcrumbs->itemTemplate); 
+        
+        $this->assertEquals("<li>My-&lt;br&gt;Test-Label</li>\n", $encodedValue);
+        
+        //without encodeLabels
+        $this->breadcrumbs->encodeLabels = false;
+        $unencodedValue = $method->invoke($this->breadcrumbs, $link, $this->breadcrumbs->itemTemplate);
+        
+        $this->assertEquals("<li>My-<br>Test-Label</li>\n", $unencodedValue);
+    }
+    
+    public function testRenderItemWithLabelAndUrl()
+    {
+        $link = ['label' => 'My-<br>Test-Label', 'url' => 'http://localhost/yii2'];
+        $method = $this->reflectMethod();
+        $encodedValue = $method->invoke($this->breadcrumbs, $link, $this->breadcrumbs->itemTemplate); 
+        
+        $this->assertEquals("<li><a href=\"http://localhost/yii2\">My-&lt;br&gt;Test-Label</a></li>\n", $encodedValue);
+        
+        // without encodeLabels
+        $this->breadcrumbs->encodeLabels = false; 
+        $unencodedValue = $method->invoke($this->breadcrumbs, $link, $this->breadcrumbs->itemTemplate);         
+        $this->assertEquals("<li><a href=\"http://localhost/yii2\">My-<br>Test-Label</a></li>\n", $unencodedValue);
+    }
+    
+    public function testRenderItemTemplate()
+    {
+        $link = ['label' => 'My-<br>Test-Label', 'url' => 'http://localhost/yii2', 'template' => "<td>{link}</td>\n"];
+        $method = $this->reflectMethod();
+        $encodedValue = $method->invoke($this->breadcrumbs, $link, $this->breadcrumbs->itemTemplate); 
+        
+        $this->assertEquals("<td><a href=\"http://localhost/yii2\">My-&lt;br&gt;Test-Label</a></td>\n", $encodedValue);
+        
+        // without encodeLabels
+        $this->breadcrumbs->encodeLabels = false; 
+        $unencodedValue = $method->invoke($this->breadcrumbs, $link, $this->breadcrumbs->itemTemplate);         
+        $this->assertEquals("<td><a href=\"http://localhost/yii2\">My-<br>Test-Label</a></td>\n", $unencodedValue);        
+    }
+    
+    /**
+     * Helper methods
+     */
+    protected function reflectMethod($class = '\yii\widgets\Breadcrumbs', $method = 'renderItem')
+    {
+        $value = new \ReflectionMethod($class, $method);
+        $value->setAccessible(true);
+        
+        return $value;
+    }
+}