1 files changed, 84 insertions, 0 deletions
diff --git a/tests/PlanetTest.php b/tests/PlanetTest.php
new file mode 100644
index 0000000..5cec1ce
--- /dev/null
+++ b/tests/PlanetTest.php
@@ -0,0 +1,84 @@
+<?php
+
+use PHPUnit\Framework\TestCase;
+
+class FoolCategory {
+
+    protected $name;
+
+    function __construct($name)
+    {
+        $this->name = $name;
+    }
+
+    function get_label()
+    {
+        return $this->name;
+    }
+}
+
+class FoolItem
+{
+    protected $categories;
+
+    function __construct($categories)
+    {
+        foreach ($categories as $c)
+            $this->categories[] = new FoolCategory($c);
+    }
+
+    function get_categories() {
+        return $this->categories;
+    }
+}
+
+class PlanetTest extends TestCase
+{
+
+    protected $planet;
+    protected $items;
+
+    public function setUp()
+    {
+        $this->planet = new Planet();
+
+        $this->items = array(
+            new FoolItem(array('catA', 'catB', 'catC')),
+            new FoolItem(array('catB')),
+            new FoolItem(array('catA')),
+            new FoolItem(array('catC'))
+        );
+    }
+
+    protected function _after()
+    {
+        unset($this->planet);
+    }
+
+    public function testFilterItemsByCategoryWithInvalidCategory()
+    {
+        $this->assertEquals(count($this->planet->_filterItemsByCategory($this->items, null)), count($this->items));
+        $this->assertEquals(count($this->planet->_filterItemsByCategory($this->items, ' ')), count($this->items));
+    }
+
+    public function testFilterItemsByCategoryWithNonUsedCategory()
+    {
+        $this->assertEquals(count($this->planet->_filterItemsByCategory($this->items, 'catD')), 0);
+    }
+
+    public function testFilterItemsByCategoryWithValidCategory()
+    {
+        $this->assertEquals(count($this->planet->_filterItemsByCategory($this->items, 'catA')), 2);
+        $this->assertEquals(count($this->planet->_filterItemsByCategory($this->items, 'catB')), 2);
+        $this->assertEquals(count($this->planet->_filterItemsByCategory($this->items, 'catC')), 2);
+        $this->assertEquals(count($this->planet->_filterItemsByCategory($this->items, 'CATA')), 2);
+    }
+
+    public function testFilterItemsByCategoryWithMultipleCategory()
+    {
+        $this->assertEquals(count($this->planet->_filterItemsByCategory($this->items, 'catA,catB')), 3);
+        $this->assertEquals(count($this->planet->_filterItemsByCategory($this->items, 'catA,catB,catC')), 4);
+        $this->assertEquals(count($this->planet->_filterItemsByCategory($this->items, 'catA, catB')), 3);
+    }
+
+}