1 files changed, 99 insertions, 0 deletions
diff --git a/toolkit/components/extensions/test/xpcshell/test_ext_eventpage_warning.js b/toolkit/components/extensions/test/xpcshell/test_ext_eventpage_warning.js
new file mode 100644
index 0000000000..82c18e7015
--- /dev/null
+++ b/toolkit/components/extensions/test/xpcshell/test_ext_eventpage_warning.js
@@ -0,0 +1,99 @@
+"use strict";
+
+AddonTestUtils.init(this);
+// This test expects and checks deprecation warnings.
+ExtensionTestUtils.failOnSchemaWarnings(false);
+
+function createEventPageExtension(eventPage) {
+  return ExtensionTestUtils.loadExtension({
+    manifest: {
+      background: eventPage,
+    },
+    files: {
+      "event_page_script.js"() {
+        browser.test.log("running event page as background script");
+        browser.test.sendMessage("running", 1);
+      },
+      "event-page.html": `<!DOCTYPE html>
+        <html><head>
+          <meta charset="utf-8">
+          <script src="event_page_script.js"><\/script>
+        </head></html>`,
+    },
+  });
+}
+
+add_task(
+  {
+    // This test case covers expected warnings emitted when the
+    // event page support is disabled by prefs.
+    pref_set: [["extensions.eventPages.enabled", false]],
+  },
+  async function test_eventpages() {
+    let testCases = [
+      {
+        message: "testing event page running as a background page",
+        eventPage: {
+          page: "event-page.html",
+          persistent: false,
+        },
+      },
+      {
+        message: "testing event page scripts running as a background page",
+        eventPage: {
+          scripts: ["event_page_script.js"],
+          persistent: false,
+        },
+      },
+      {
+        message:
+          "testing additional unrecognized properties on background page",
+        eventPage: {
+          scripts: ["event_page_script.js"],
+          nonExistentProp: true,
+        },
+      },
+      {
+        message: "testing persistent background page",
+        eventPage: {
+          page: "event-page.html",
+          persistent: true,
+        },
+      },
+      {
+        message:
+          "testing scripts with persistent background running as a background page",
+        eventPage: {
+          scripts: ["event_page_script.js"],
+          persistent: true,
+        },
+      },
+    ];
+
+    let { messages } = await promiseConsoleOutput(async () => {
+      for (let test of testCases) {
+        info(test.message);
+
+        let extension = createEventPageExtension(test.eventPage);
+        await extension.startup();
+        let x = await extension.awaitMessage("running");
+        equal(x, 1, "got correct value from extension");
+        await extension.unload();
+      }
+    });
+    AddonTestUtils.checkMessages(
+      messages,
+      {
+        expected: [
+          { message: /Event pages are not currently supported./ },
+          { message: /Event pages are not currently supported./ },
+          {
+            message:
+              /Reading manifest: Warning processing background.nonExistentProp: An unexpected property was found/,
+          },
+        ],
+      },
+      true
+    );
+  }
+);