test: each

Author: adhocore

tests/CollectionTest.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace Ahc\Underscore\Tests;
+
+use Ahc\Underscore\Underscore as _;
+
+class CollectionTest extends \PHPUnit_Framework_TestCase
+{
+    public function test_each()
+    {
+        _::_([1, 2, 3])->each(function ($num, $i) {
+            $this->assertSame($num, $i + 1, 'each iterators provide value and iteration count');
+        });
+
+        $answers = [];
+        $count   = 0;
+        _::_([1, 2, 3])->each(function($num) use (&$answers, &$count) {
+            $answers[] = $num * 5;
+            $count++;
+        });
+
+        $this->assertSame($answers, [5, 10, 15], 'callback applied on each member');
+        $this->assertSame($count, 3, 'callback applied exactly 3 times');
+
+        $answers = [];
+        _::_(['one' => 1, 'two' => 2, 'three' => 3])->each(function($num, $index) use (&$answers) {
+            $answers[] = $index;
+        });
+
+        $this->assertSame($answers, ['one', 'two', 'three'], 'callback applied on each member of assoc array');
+    }
+}