Apply automatic style fixes

Author: Riimu

tests/tests/JsonEncoderTest.php

@@ -297,15 +297,15 @@ public function testEncoderIterationKey()
         $encoder = new BufferJsonEncoder('value');
 
         $this->assertSame(0, $encoder->key());
-        $this->assertSame(true, $encoder->valid());
+        $this->assertTrue($encoder->valid());
 
         $encoder->rewind();
         $this->assertSame(0, $encoder->key());
-        $this->assertSame(true, $encoder->valid());
+        $this->assertTrue($encoder->valid());
 
         $encoder->next();
-        $this->assertSame(null, $encoder->key());
-        $this->assertSame(false, $encoder->valid());
+        $this->assertNull($encoder->key());
+        $this->assertFalse($encoder->valid());
     }
 
     public function testInvalidStatusAfterError()

tests/tests/JsonStreamTest.php

@@ -92,8 +92,8 @@ public function testMetaData()
     {
         $stream = new JsonStream('value');
 
-        $this->assertSame(null, $stream->getMetadata('key_that_does_not_exist'));
-        $this->assertSame(true, $stream->getMetadata('seekable'));
+        $this->assertNull($stream->getMetadata('key_that_does_not_exist'));
+        $this->assertTrue($stream->getMetadata('seekable'));
         $this->assertSame(['timed_out',
             'blocked',
             'eof',