Fixed #12822: Fixed datetime creation from microseconds, added tests to \i18n\Formatter::asTimestamp

framework/i18n/Formatter.php

@@ -672,7 +672,7 @@ class Formatter extends Component
         }
         try {
             if (is_numeric($value)) { // process as unix timestamp, which is always in UTC
-                $timestamp = new DateTime('@' . $value, new DateTimeZone('UTC'));
+                $timestamp = new DateTime('@' . (int)$value, new DateTimeZone('UTC'));
                 return $checkTimeInfo ? [$timestamp, true] : $timestamp;
             } elseif (($timestamp = DateTime::createFromFormat('Y-m-d', $value, new DateTimeZone($this->defaultTimeZone))) !== false) { // try Y-m-d format (support invalid dates like 2012-13-01)
                 return $checkTimeInfo ? [$timestamp, false] : $timestamp;

tests/framework/i18n/FormatterTest.php

@@ -191,4 +191,23 @@ class FormatterTest extends TestCase
         // null display
         $this->assertSame($this->formatter->nullDisplay, $this->formatter->asBoolean(null));
     }
+
+    public function testAsTimestamp()
+    {
+        $this->assertSame('1451606400', $this->formatter->asTimestamp(1451606400));
+        $this->assertSame('1451606400', $this->formatter->asTimestamp(1451606400.1234));
+        $this->assertSame('1451606400', $this->formatter->asTimestamp(1451606400.0000));
+
+        $this->assertSame('1451606400', $this->formatter->asTimestamp('1451606400'));
+        $this->assertSame('1451606400', $this->formatter->asTimestamp('1451606400.1234'));
+        $this->assertSame('1451606400', $this->formatter->asTimestamp('1451606400.0000'));
+        
+        $this->assertSame('1451606400', $this->formatter->asTimestamp('2016-01-01 00:00:00'));
+
+        $dateTime = new \DateTime('2016-01-01 00:00:00.000');
+        $this->assertSame('1451606400', $this->formatter->asTimestamp($dateTime));
+
+        $dateTime = new \DateTime('2016-01-01 00:00:00.000', new \DateTimeZone('Europe/Berlin'));
+        $this->assertSame('1451602800', $this->formatter->asTimestamp($dateTime));
+    }
 }