1 files changed, 159 insertions, 0 deletions
diff --git a/browser/base/content/test/tabs/browser_multiselect_tabs_using_Shift.js b/browser/base/content/test/tabs/browser_multiselect_tabs_using_Shift.js
new file mode 100644
index 0000000000..ac647bae3c
--- /dev/null
+++ b/browser/base/content/test/tabs/browser_multiselect_tabs_using_Shift.js
@@ -0,0 +1,159 @@
+add_task(async function noItemsInTheCollectionBeforeShiftClicking() {
+  let tab1 = await addTab();
+  let tab2 = await addTab();
+  let tab3 = await addTab();
+  let tab4 = await addTab();
+  let tab5 = await addTab();
+
+  await BrowserTestUtils.switchTab(gBrowser, tab1);
+
+  is(gBrowser.selectedTab, tab1, "Tab1 has focus now");
+  is(gBrowser.multiSelectedTabsCount, 0, "No tab is multi-selected");
+
+  gBrowser.hideTab(tab3);
+  ok(tab3.hidden, "Tab3 is hidden");
+
+  info("Click on tab4 while holding shift key");
+  await triggerClickOn(tab4, { shiftKey: true });
+
+  ok(
+    tab1.multiselected && gBrowser._multiSelectedTabsSet.has(tab1),
+    "Tab1 is multi-selected"
+  );
+  ok(
+    tab2.multiselected && gBrowser._multiSelectedTabsSet.has(tab2),
+    "Tab2 is multi-selected"
+  );
+  ok(
+    !tab3.multiselected && !gBrowser._multiSelectedTabsSet.has(tab3),
+    "Hidden tab3 is not multi-selected"
+  );
+  ok(
+    tab4.multiselected && gBrowser._multiSelectedTabsSet.has(tab4),
+    "Tab4 is multi-selected"
+  );
+  ok(
+    !tab5.multiselected && !gBrowser._multiSelectedTabsSet.has(tab5),
+    "Tab5 is not multi-selected"
+  );
+  is(gBrowser.multiSelectedTabsCount, 3, "three multi-selected tabs");
+  is(gBrowser.selectedTab, tab1, "Tab1 still has focus");
+
+  BrowserTestUtils.removeTab(tab1);
+  BrowserTestUtils.removeTab(tab2);
+  BrowserTestUtils.removeTab(tab3);
+  BrowserTestUtils.removeTab(tab4);
+  BrowserTestUtils.removeTab(tab5);
+});
+
+add_task(async function itemsInTheCollectionBeforeShiftClicking() {
+  let tab1 = await addTab();
+  let tab2 = await addTab();
+  let tab3 = await addTab();
+  let tab4 = await addTab();
+  let tab5 = await addTab();
+
+  await BrowserTestUtils.switchTab(gBrowser, () => triggerClickOn(tab1, {}));
+
+  is(gBrowser.selectedTab, tab1, "Tab1 has focus now");
+  is(gBrowser.multiSelectedTabsCount, 0, "No tab is multi-selected");
+
+  await triggerClickOn(tab3, { ctrlKey: true });
+  is(gBrowser.selectedTab, tab1, "Tab1 still has focus");
+  is(gBrowser.multiSelectedTabsCount, 2, "Two tabs are multi-selected");
+  ok(
+    tab1.multiselected && gBrowser._multiSelectedTabsSet.has(tab1),
+    "Tab1 is multi-selected"
+  );
+  ok(
+    tab3.multiselected && gBrowser._multiSelectedTabsSet.has(tab3),
+    "Tab3 is multi-selected"
+  );
+
+  info("Click on tab5 while holding Shift key");
+  await BrowserTestUtils.switchTab(
+    gBrowser,
+    triggerClickOn(tab5, { shiftKey: true })
+  );
+
+  is(gBrowser.selectedTab, tab3, "Tab3 has focus");
+  ok(
+    !tab1.multiselected && !gBrowser._multiSelectedTabsSet.has(tab1),
+    "Tab1 is not multi-selected"
+  );
+  ok(
+    !tab2.multiselected && !gBrowser._multiSelectedTabsSet.has(tab2),
+    "Tab2 is not multi-selected "
+  );
+  ok(
+    tab3.multiselected && gBrowser._multiSelectedTabsSet.has(tab3),
+    "Tab3 is multi-selected"
+  );
+  ok(
+    tab4.multiselected && gBrowser._multiSelectedTabsSet.has(tab4),
+    "Tab4 is multi-selected"
+  );
+  ok(
+    tab5.multiselected && gBrowser._multiSelectedTabsSet.has(tab5),
+    "Tab5 is multi-selected"
+  );
+  is(gBrowser.multiSelectedTabsCount, 3, "Three tabs are multi-selected");
+
+  info("Click on tab4 while holding Shift key");
+  await triggerClickOn(tab4, { shiftKey: true });
+
+  is(gBrowser.selectedTab, tab3, "Tab3 has focus");
+  ok(
+    !tab1.multiselected && !gBrowser._multiSelectedTabsSet.has(tab1),
+    "Tab1 is not multi-selected"
+  );
+  ok(
+    !tab2.multiselected && !gBrowser._multiSelectedTabsSet.has(tab2),
+    "Tab2 is not multi-selected "
+  );
+  ok(
+    tab3.multiselected && gBrowser._multiSelectedTabsSet.has(tab3),
+    "Tab3 is multi-selected"
+  );
+  ok(
+    tab4.multiselected && gBrowser._multiSelectedTabsSet.has(tab4),
+    "Tab4 is multi-selected"
+  );
+  ok(
+    !tab5.multiselected && !gBrowser._multiSelectedTabsSet.has(tab5),
+    "Tab5 is not multi-selected"
+  );
+  is(gBrowser.multiSelectedTabsCount, 2, "Two tabs are multi-selected");
+
+  info("Click on tab1 while holding Shift key");
+  await triggerClickOn(tab1, { shiftKey: true });
+
+  is(gBrowser.selectedTab, tab3, "Tab3 has focus");
+  ok(
+    tab1.multiselected && gBrowser._multiSelectedTabsSet.has(tab1),
+    "Tab1 is multi-selected"
+  );
+  ok(
+    tab2.multiselected && gBrowser._multiSelectedTabsSet.has(tab2),
+    "Tab2 is multi-selected "
+  );
+  ok(
+    tab3.multiselected && gBrowser._multiSelectedTabsSet.has(tab3),
+    "Tab3 is multi-selected"
+  );
+  ok(
+    !tab4.multiselected && !gBrowser._multiSelectedTabsSet.has(tab4),
+    "Tab4 is not multi-selected"
+  );
+  ok(
+    !tab5.multiselected && !gBrowser._multiSelectedTabsSet.has(tab5),
+    "Tab5 is not multi-selected"
+  );
+  is(gBrowser.multiSelectedTabsCount, 3, "Three tabs are multi-selected");
+
+  BrowserTestUtils.removeTab(tab1);
+  BrowserTestUtils.removeTab(tab2);
+  BrowserTestUtils.removeTab(tab3);
+  BrowserTestUtils.removeTab(tab4);
+  BrowserTestUtils.removeTab(tab5);
+});