add QueryBuilder

tests/QueryBuilderTest.php

@@ -0,0 +1,37 @@
+<?php
+
+namespace DavidBadura\Taskwarrior\Test;
+
+use DavidBadura\Taskwarrior\QueryBuilder;
+
+/**
+ * @author David Badura <badura@simplethings.de>
+ */
+class QueryBuilderTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * @var QueryBuilder
+     */
+    protected $builder;
+
+    public function setUp()
+    {
+        $taskManager = $this->getMockBuilder('DavidBadura\Taskwarrior\TaskManager')
+            ->disableOriginalConstructor()
+            ->getMock();
+
+        $this->builder = new QueryBuilder($taskManager);
+    }
+
+    public function testWhere()
+    {
+        $filter = $this->builder
+            ->whereProject('testProject')
+            ->whereTag('testTag')
+            ->whereStatus('testStatus')
+            ->wherePriority('testPriority')
+            ->getFilter();
+
+        $this->assertEquals('project:testProject +testTag status:testStatus priority:testPriority', $filter);
+    }
+}