Add more tests

Author: adrium

tests/ConstructorFixture.php

@@ -0,0 +1,24 @@
+<?php
+/**
+ * @link    http://github.com/myclabs/php-enum
+ * @license http://www.opensource.org/licenses/mit-license.php MIT (see the LICENSE file)
+ */
+
+namespace MyCLabs\Tests\Enum;
+
+use MyCLabs\Enum\Enum;
+
+/**
+ * Class ConstructorFixture
+ *
+ * @method static ConstructorFixture ONCE()
+ */
+class ConstructorFixture extends Enum
+{
+    public function __construct()
+    {
+        /* noop */
+    }
+
+    const TEST = 'OK';
+}

tests/EnumTest.php

@@ -230,6 +230,39 @@ public function testEqualsComparesProblematicValuesProperly()
         $this->assertFalse($null->equals($false));
     }
 
+    /**
+     * fromKey()
+     */
+    public function testFromKey()
+    {
+        $number = EnumFixture::BAR();
+        $fromValue = EnumFixture::fromKey('BAR');
+
+        $this->assertSame($number, $fromValue);
+    }
+
+    /**
+     * fromValue()
+     */
+    public function testFromValue()
+    {
+        $enum = EnumFixture::NUMBER();
+        $number = EnumFixture::fromValue(42);
+        $inexistant = EnumFixture::fromValue('inexistant');
+
+        $this->assertSame($enum, $number);
+        $this->assertSame(null, $inexistant);
+    }
+
+    /**
+     * @expectedException \BadMethodCallException
+     */
+    public function testConstructor()
+    {
+        $number = ConstructorFixture::TEST();
+        $number->getValue();
+    }
+
     /**
      * __wakeup()
      */