1 files changed, 141 insertions, 0 deletions
diff --git a/toolkit/content/tests/chrome/file_maximized_persist.js b/toolkit/content/tests/chrome/file_maximized_persist.js
new file mode 100644
index 0000000000..c0d543728b
--- /dev/null
+++ b/toolkit/content/tests/chrome/file_maximized_persist.js
@@ -0,0 +1,141 @@
+SimpleTest.waitForExplicitFinish();
+const WIDTH = 300;
+const HEIGHT = 300;
+let gWindow;
+let gTitlebar;
+
+function promiseMessage(msg) {
+  info(`wait for message "${msg}"`);
+  return new Promise(resolve => {
+    function listener(evt) {
+      info(`got message "${evt.data}"`);
+      if (evt.data == msg) {
+        window.removeEventListener("message", listener);
+        resolve();
+      }
+    }
+    window.addEventListener("message", listener);
+  });
+}
+
+function openWindow(features = "") {
+  return window.browsingContext.topChromeWindow.openDialog(
+    gWindow,
+    "_blank",
+    "chrome,dialog=no,all," + features,
+    window
+  );
+}
+
+function checkWindow(msg, win, sizemode, width, height) {
+  is(win.windowState, sizemode, "sizemode should match " + msg);
+  if (sizemode == win.STATE_NORMAL) {
+    is(win.innerWidth, width, "width should match " + msg);
+    is(win.innerHeight, height, "height should match " + msg);
+  }
+}
+
+function todoCheckWindow(msg, win, sizemode) {
+  todo_is(win.windowState, sizemode, "sizemode should match " + msg);
+}
+
+// Persistence of "sizemode" is delayed to 500ms after it's changed.
+// See SIZE_PERSISTENCE_TIMEOUT in nsWebShellWindow.cpp.
+// We wait for 1000ms to ensure that it is actually persisted.
+// We can also wait for condition that XULStore does have the value
+// set, but that way we cannot test the cases where we don't expect
+// persistence to happen.
+function waitForSizeModePersisted() {
+  return new Promise(resolve => {
+    setTimeout(resolve, 1000);
+  });
+}
+
+async function changeSizeMode(func) {
+  let promiseSizeModeChange = promiseMessage("sizemodechange");
+  func();
+  await promiseSizeModeChange;
+  await waitForSizeModePersisted();
+}
+
+async function runTest(aWindow) {
+  gWindow = aWindow;
+  gTitlebar = aWindow != "window_maximized_persist_with_no_titlebar.xhtml";
+  let win = openWindow();
+  await SimpleTest.promiseFocus(win);
+
+  // Check the default state.
+  const chrome_url = win.location.href;
+  checkWindow("when open initially", win, win.STATE_NORMAL, WIDTH, HEIGHT);
+  const widthDiff = win.outerWidth - win.innerWidth;
+  const heightDiff = win.outerHeight - win.innerHeight;
+  // Maximize the window.
+  await changeSizeMode(() => win.maximize());
+  checkWindow("after maximize window", win, win.STATE_MAXIMIZED);
+  win.close();
+
+  // Open a new window to check persisted sizemode.
+  win = openWindow();
+  await SimpleTest.promiseFocus(win);
+  checkWindow("when reopen to maximized", win, win.STATE_MAXIMIZED);
+  // Restore the window.
+  if (win.windowState == win.STATE_MAXIMIZED) {
+    await changeSizeMode(() => win.restore());
+  }
+  checkWindow("after restore window", win, win.STATE_NORMAL, WIDTH, HEIGHT);
+  win.close();
+
+  // Open a new window again to check persisted sizemode.
+  win = openWindow();
+  await SimpleTest.promiseFocus(win);
+  checkWindow("when reopen to normal", win, win.STATE_NORMAL, WIDTH, HEIGHT);
+  // And maximize the window again for next test.
+  await changeSizeMode(() => win.maximize());
+  win.close();
+
+  // Open a new window again with centerscreen which shouldn't revert
+  // the persisted sizemode.
+  win = openWindow("centerscreen");
+  await SimpleTest.promiseFocus(win);
+  checkWindow("when open with centerscreen", win, win.STATE_MAXIMIZED);
+  win.close();
+
+  // Linux doesn't seem to persist sizemode across opening window
+  // with specified size, so mark it expected fail for now.
+  const isLinux = navigator.platform.includes("Linux");
+  let checkWindowMayFail = isLinux ? todoCheckWindow : checkWindow;
+
+  // Open a new window with size specified.
+  win = openWindow("width=400,height=400");
+  await SimpleTest.promiseFocus(win);
+  checkWindow("when reopen with size", win, win.STATE_NORMAL, 400, 400);
+  await waitForSizeModePersisted();
+  win.close();
+
+  // Open a new window without size specified.
+  // The window opened before should not change persisted sizemode.
+  win = openWindow();
+  await SimpleTest.promiseFocus(win);
+  checkWindowMayFail("when reopen without size", win, win.STATE_MAXIMIZED);
+  win.close();
+
+  // Open a new window with sizing synchronously.
+  win = openWindow();
+  win.resizeTo(500 + widthDiff, 500 + heightDiff);
+  await SimpleTest.promiseFocus(win);
+  checkWindow("when sized synchronously", win, win.STATE_NORMAL, 500, 500);
+  await waitForSizeModePersisted();
+  win.close();
+
+  // Open a new window without any sizing.
+  // The window opened before should not change persisted sizemode.
+  win = openWindow();
+  await SimpleTest.promiseFocus(win);
+  checkWindowMayFail("when reopen without sizing", win, win.STATE_MAXIMIZED);
+  win.close();
+
+  // Clean up the XUL store for the given window.
+  Services.xulStore.removeDocument(chrome_url);
+
+  SimpleTest.finish();
+}