1 files changed, 53 insertions, 0 deletions
diff --git a/browser/extensions/formautofill/test/browser/browser_dropdown_layout.js b/browser/extensions/formautofill/test/browser/browser_dropdown_layout.js
new file mode 100644
index 0000000000..bc1d2fccab
--- /dev/null
+++ b/browser/extensions/formautofill/test/browser/browser_dropdown_layout.js
@@ -0,0 +1,53 @@
+"use strict";
+
+const URL =
+  "http://example.org/browser/browser/extensions/formautofill/test/browser/autocomplete_basic.html";
+
+add_task(async function setup_storage() {
+  await setStorage(TEST_ADDRESS_1, TEST_ADDRESS_2, TEST_ADDRESS_3);
+});
+
+async function reopenPopupWithResizedInput(browser, selector, newSize) {
+  await closePopup(browser);
+  /* eslint no-shadow: ["error", { "allow": ["selector", "newSize"] }] */
+  await SpecialPowers.spawn(
+    browser,
+    [{ selector, newSize }],
+    async function ({ selector, newSize }) {
+      const input = content.document.querySelector(selector);
+
+      input.style.boxSizing = "border-box";
+      input.style.width = newSize + "px";
+    }
+  );
+  await openPopupOn(browser, selector);
+}
+
+add_task(async function test_address_dropdown() {
+  await BrowserTestUtils.withNewTab(
+    { gBrowser, url: URL },
+    async function (browser) {
+      const focusInput = "#organization";
+      await openPopupOn(browser, focusInput);
+      const firstItem = getDisplayedPopupItems(browser)[0];
+
+      is(firstItem.getAttribute("ac-image"), "", "Should not show icon");
+
+      // The breakpoint of two-lines layout is 150px
+      await reopenPopupWithResizedInput(browser, focusInput, 140);
+      is(
+        firstItem._itemBox.getAttribute("size"),
+        "small",
+        "Show two-lines layout"
+      );
+      await reopenPopupWithResizedInput(browser, focusInput, 160);
+      is(
+        firstItem._itemBox.hasAttribute("size"),
+        false,
+        "Show one-line layout"
+      );
+
+      await closePopup(browser);
+    }
+  );
+});