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diff --git a/dom/manifest/test/test_ImageObjectProcessor_type.html b/dom/manifest/test/test_ImageObjectProcessor_type.html
new file mode 100644
index 0000000000..29627c5e46
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+++ b/dom/manifest/test/test_ImageObjectProcessor_type.html
@@ -0,0 +1,57 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1079453
+-->
+<head>
+  <meta charset="utf-8">
+  <title>Test for Bug 1079453</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+  <script src="common.js"></script>
+  <script>
+/**
+ * Image object's type property
+ * https://w3c.github.io/manifest/#type-member
+ **/
+
+"use strict";
+var testIcon = {
+  icons: [{
+    src: "test",
+    type: undefined,
+  }],
+};
+
+var invalidMimeTypes = [
+  "application / text",
+  "test;test",
+  ";test?test",
+  "application\\text",
+  "image/jpeg, image/gif",
+];
+invalidMimeTypes.forEach((invalidMime) => {
+  var expected = `Expect invalid mime to be treated like undefined.`;
+  testIcon.icons[0].type = invalidMime;
+  data.jsonText = JSON.stringify(testIcon);
+  var result = processor.process(data);
+  is(result.icons[0].type, undefined, expected);
+});
+
+var validTypes = [
+  "image/jpeg",
+  "IMAGE/jPeG",
+  `${whiteSpace}image/jpeg${whiteSpace}`,
+  "image/JPEG; whatever=something",
+  "image/JPEG;whatever",
+];
+
+validTypes.forEach((validMime) => {
+  var expected = `Expect valid mime to be parsed to : image/jpeg.`;
+  testIcon.icons[0].type = validMime;
+  data.jsonText = JSON.stringify(testIcon);
+  var result = processor.process(data);
+  is(result.icons[0].type, "image/jpeg", expected);
+});
+  </script>
+</head>