Merge branch 'master' of https://github.com/TinyPNG/wordpress-plugin

Author: Edwin Westerhoud

src/class-tiny-plugin.php

@@ -89,6 +89,10 @@ public function compress_attachment($metadata, $attachment_id) {
             }
         }
 
+        if (!is_array($metadata['sizes'])) {
+            return $metadata;
+        }
+
         foreach ($metadata['sizes'] as $size => $info) {
             if (isset($settings[$size]) && $settings[$size]['tinify'] && !$tiny_metadata->is_compressed($size)) {
                 try {

test/unit/TinyPluginTest.php

@@ -107,4 +107,16 @@ public function testShouldReturnIfNoImage() {
 
         $this->subject->compress_attachment(getTestMetadata(), 1);
     }
+
+    public function testWrongMetadataShouldNotShowWarnings() {
+        $this->wp->stub('get_post_mime_type', create_function('$i', 'return "image/png";'));
+        $this->compressor->expects($this->exactly(1))->method('compress_file')->will(
+            $this->returnCallback('compressTestFile')
+        );
+
+        $testmeta = getTestMetadata();
+        $testmeta['sizes'] = 0;
+
+        $this->subject->compress_attachment($testmeta, 1);
+    }
 }