1 files changed, 52 insertions, 0 deletions
diff --git a/browser/base/content/test/webextensions/browser_permissions_optional.js b/browser/base/content/test/webextensions/browser_permissions_optional.js
new file mode 100644
index 0000000000..7c8a654cbc
--- /dev/null
+++ b/browser/base/content/test/webextensions/browser_permissions_optional.js
@@ -0,0 +1,52 @@
+"use strict";
+add_task(async function test_request_permissions_without_prompt() {
+  async function pageScript() {
+    const NO_PROMPT_PERM = "activeTab";
+    window.addEventListener(
+      "keypress",
+      async () => {
+        let permGranted = await browser.permissions.request({
+          permissions: [NO_PROMPT_PERM],
+        });
+        browser.test.assertTrue(
+          permGranted,
+          `${NO_PROMPT_PERM} permission was granted.`
+        );
+        let perms = await browser.permissions.getAll();
+        browser.test.assertTrue(
+          perms.permissions.includes(NO_PROMPT_PERM),
+          `${NO_PROMPT_PERM} permission exists.`
+        );
+        browser.test.sendMessage("permsGranted");
+      },
+      { once: true }
+    );
+    browser.test.sendMessage("pageReady");
+  }
+
+  let extension = ExtensionTestUtils.loadExtension({
+    background() {
+      browser.test.sendMessage("ready", browser.runtime.getURL("page.html"));
+    },
+    files: {
+      "page.html": `<html><head><script src="page.js"></script></head></html>`,
+      "page.js": pageScript,
+    },
+    manifest: {
+      optional_permissions: ["activeTab"],
+    },
+  });
+  await extension.startup();
+
+  let url = await extension.awaitMessage("ready");
+
+  await BrowserTestUtils.withNewTab({ gBrowser, url }, async browser => {
+    await extension.awaitMessage("pageReady");
+
+    await BrowserTestUtils.synthesizeKey("a", {}, browser);
+
+    await extension.awaitMessage("permsGranted");
+  });
+
+  await extension.unload();
+});