add missing stream wrapper functions

src/S3/StreamWrapper.php

@@ -581,6 +581,28 @@ public function stream_cast($cast_as)
         return false;
     }
 
+    public function stream_set_option($option, $arg1, $arg2)
+    {
+        return false;
+    }
+
+    public function stream_metadata($path, $option, $value)
+    {
+        return false;
+    }
+
+    public function stream_lock($operation)
+    {
+        trigger_error('stream_lock() is not supported by the Amazon S3 stream wrapper', E_USER_WARNING);
+        return false;
+    }
+
+    public function stream_truncate($new_size)
+    {
+        trigger_error('stream_truncate() is not supported by the Amazon S3 stream wrapper', E_USER_WARNING);
+        return false;
+    }
+
     /**
      * Validates the provided stream arguments for fopen and returns an array
      * of errors.

tests/S3/StreamWrapperTest.php

@@ -1035,4 +1035,54 @@ public function testTriggersErrorOnNoFlushOrClose($content)
         $stream = fopen('s3://bucket/key', 'a');
         fwrite($stream, $content);
     }
+
+    public function testStreamSetOptionReturnsFalse()
+    {
+        $this->addMockResults(
+            $this->client,
+            [
+                new Result(),
+            ]
+        );
+        $stream = fopen('s3://bucket/key', 'r');
+        $this->assertFalse(stream_set_option($stream, STREAM_OPTION_READ_TIMEOUT, 1));
+    }
+
+    public function testStreamMetadataReturnsFalse()
+    {
+        $this->addMockResults(
+            $this->client,
+            [
+                new Result(),
+            ]
+        );
+        $stream = fopen('s3://bucket/key', 'r');
+        $this->assertFalse(stream_metadata($stream, STREAM_META_TOUCH, 1));
+    }
+
+    public function testStreamLockReturnsFalse()
+    {
+        $this->addMockResults(
+            $this->client,
+            [
+                new Result(),
+            ]
+        );
+        $stream = fopen('s3://bucket/key', 'r');
+        $this->assertFalse(flock($stream, LOCK_EX));
+        $this->assertFalse(flock($stream, LOCK_UN));
+        $this->assertFalse(flock($stream, LOCK_SH));
+    }
+
+    public function testStreamTruncateReturnsFalse()
+    {
+        $this->addMockResults(
+            $this->client,
+            [
+                new Result(),
+            ]
+        );
+        $stream = fopen('s3://bucket/key', 'r');
+        $this->assertFalse(ftruncate($stream, 1));
+    }
 }