Initial copy of files from Pickles

tests/SortTest.php

@@ -0,0 +1,61 @@
+<?php
+
+class SortTest extends PHPUnit_Framework_TestCase
+{
+    public function testByNameASC()
+    {
+        $shuffled = [
+            ['name' => 'epsilon'],
+            ['name' => 'gamma'],
+            ['name' => 'alpha'],
+            ['name' => 'delta'],
+            ['name' => 'beta'],
+        ];
+
+        $sorted = [
+            ['name' => 'alpha'],
+            ['name' => 'beta'],
+            ['name' => 'delta'],
+            ['name' => 'epsilon'],
+            ['name' => 'gamma'],
+        ];
+
+        Pickles\Sort::by('name', $shuffled);
+
+        $this->assertEquals($sorted, $shuffled);
+    }
+
+    public function testByNameDESC()
+    {
+        $shuffled = [
+            ['name' => 'epsilon'],
+            ['name' => 'gamma'],
+            ['name' => 'alpha'],
+            ['name' => 'delta'],
+            ['name' => 'beta'],
+        ];
+
+        $sorted = [
+            ['name' => 'gamma'],
+            ['name' => 'epsilon'],
+            ['name' => 'delta'],
+            ['name' => 'beta'],
+            ['name' => 'alpha'],
+        ];
+
+        Pickles\Sort::by('name', $shuffled, Pickles\Sort::DESC);
+
+        $this->assertEquals($sorted, $shuffled);
+    }
+
+    public function testMissingField()
+    {
+        $shuffled = [['foo' => 'bar', 'bar' => 'foo']];
+        $sorted   = [['foo' => 'bar', 'bar' => 'foo']];
+
+        Pickles\Sort::by('name', $shuffled);
+
+        $this->assertEquals($sorted, $shuffled);
+    }
+}
+