Merge pull request #29 from worksolutions/map-factory

Map factory

Author: garr1nch4

composer.json

@@ -3,7 +3,7 @@
   "description": "Collections library for php language",
   "minimum-stability": "dev",
   "license": "MIT",
-  "version": "1.0.6",
+  "version": "1.0.7",
   "authors": [
     {
       "name": "Maxim Sokolovsky",

src/WS/Utils/Collections/MapFactory.php

@@ -0,0 +1,51 @@
+<?php
+/**
+ * @author Maxim Sokolovsky
+ */
+
+namespace WS\Utils\Collections;
+
+/**
+ * Class MapFactory
+ * @package WS\Utils\Collections
+ */
+class MapFactory
+{
+    /**
+     * Creates Map from assoc array
+     * @param array $assocArray
+     * @return Map
+     */
+    public static function assoc(array $assocArray): Map
+    {
+        return self::fromIterable($assocArray);
+    }
+
+    public static function fromIterable(iterable $iterable): Map
+    {
+        $map = self::newObject();
+        foreach ($iterable as $key => $value) {
+            $map->put($key, $value);
+        }
+
+        return $map;
+    }
+
+    /**
+     * Creates empty map object
+     * @return Map
+     */
+    public static function emptyObject(): Map
+    {
+        return self::newObject();
+    }
+
+    /**
+     * Creates empty Map object
+     * @return Map
+     */
+    private static function newObject(): Map
+    {
+        return new HashMap();
+    }
+}

tests/WS/Utils/Collections/MapFactoryTest.php

@@ -0,0 +1,47 @@
+<?php
+/**
+ * @author Maxim Sokolovsky
+ */
+
+namespace WS\Utils\Collections;
+
+use ArrayIterator;
+use PHPUnit\Framework\TestCase;
+
+class MapFactoryTest extends TestCase
+{
+
+    /**
+     * @test
+     */
+    public function emptyMapIsCreated(): void
+    {
+        $map = MapFactory::emptyObject();
+        self::assertInstanceOf(Map::class, $map);
+        self::assertEquals(0, $map->size());
+    }
+
+    /**
+     * @test
+     */
+    public function mapFromIterableIsCreated(): void
+    {
+        $arrayIterator = new ArrayIterator(['a' => 'A', 'b' => 'B']);
+        $map = MapFactory::fromIterable($arrayIterator);
+        self::assertEquals(2, $map->size());
+        self::assertEquals(['a', 'b'], $map->keys()->toArray());
+        self::assertEquals(['A', 'B'], $map->values()->toArray());
+    }
+
+    /**
+     * @test
+     */
+    public function mapFromAssocArrayCreated(): void
+    {
+        $assoc = ['a' => 'A', 'b' => 'B'];
+        $map = MapFactory::assoc($assoc);
+        self::assertEquals(2, $map->size());
+        self::assertEquals(['a', 'b'], $map->keys()->toArray());
+        self::assertEquals(['A', 'B'], $map->values()->toArray());
+    }
+}