1 files changed, 87 insertions, 0 deletions
diff --git a/devtools/server/tests/browser/browser_application_manifest.js b/devtools/server/tests/browser/browser_application_manifest.js
new file mode 100644
index 0000000000..c92a3c0a2f
--- /dev/null
+++ b/devtools/server/tests/browser/browser_application_manifest.js
@@ -0,0 +1,87 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Enable web manifest processing.
+Services.prefs.setBoolPref("dom.manifest.enabled", true);
+
+add_task(async function () {
+  info("Testing fetching a valid manifest");
+  const response = await fetchManifest("application-manifest-basic.html");
+
+  ok(
+    response.manifest && response.manifest.name == "FooApp",
+    "Returns an object populated with the manifest data"
+  );
+});
+
+add_task(async function () {
+  info("Testing fetching an existing manifest with invalid values");
+  const response = await fetchManifest("application-manifest-warnings.html");
+
+  ok(
+    response.manifest && response.manifest.moz_validation,
+    "Returns an object populated with the manifest data"
+  );
+
+  const warnings = response.manifest.moz_validation;
+  ok(
+    warnings.length === 1 &&
+      warnings[0].warn &&
+      warnings[0].warn.includes("name member to be a string"),
+    "The returned object contains the expected warning info"
+  );
+});
+
+add_task(async function () {
+  info("Testing fetching a manifest in a page that does not have one");
+  const response = await fetchManifest("application-manifest-no-manifest.html");
+
+  is(response.manifest, null, "Returns an object with a `null` manifest");
+  ok(!response.errorMessage, "Does not return an error message");
+});
+
+add_task(async function () {
+  info("Testing an error happening fetching a manifest");
+  // the page that we are testing contains an invalid URL for the manifest
+  const response = await fetchManifest(
+    "application-manifest-404-manifest.html"
+  );
+
+  is(response.manifest, null, "Returns an object with a `null` manifest");
+  ok(
+    response.errorMessage &&
+      response.errorMessage.toLowerCase().includes("404 - not found"),
+    "Returns the expected error message"
+  );
+});
+
+add_task(async function () {
+  info("Testing a validation error when fetching a manifest with invalid JSON");
+  const response = await fetchManifest(
+    "application-manifest-invalid-json.html"
+  );
+  ok(
+    response.manifest && response.manifest.moz_validation,
+    "Returns an object with validation data"
+  );
+  const validation = response.manifest.moz_validation;
+  ok(
+    validation.find(x => x.error && x.type === "json"),
+    "Has the expected error in the validation field"
+  );
+});
+
+async function fetchManifest(filename) {
+  const url = MAIN_DOMAIN + filename;
+  const target = await addTabTarget(url);
+
+  info("Initializing manifest front for tab");
+  const manifestFront = await target.getFront("manifest");
+
+  info("Fetching manifest");
+  const response = await manifestFront.fetchCanonicalManifest();
+
+  return response;
+}