1 files changed, 107 insertions, 0 deletions
diff --git a/browser/components/contextualidentity/test/browser/browser_count_and_remove.js b/browser/components/contextualidentity/test/browser/browser_count_and_remove.js
new file mode 100644
index 0000000000..8f044db94e
--- /dev/null
+++ b/browser/components/contextualidentity/test/browser/browser_count_and_remove.js
@@ -0,0 +1,107 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+function openTabInUserContext(userContextId) {
+  let tab = BrowserTestUtils.addTab(gBrowser, "about:blank", { userContextId });
+  gBrowser.selectedTab = tab;
+}
+
+add_setup(async function () {
+  // make sure userContext is enabled.
+  await SpecialPowers.pushPrefEnv({
+    set: [["privacy.userContext.enabled", true]],
+  });
+});
+
+add_task(async function test() {
+  is(
+    ContextualIdentityService.countContainerTabs(),
+    0,
+    "0 container tabs by default."
+  );
+
+  openTabInUserContext(1);
+  is(
+    ContextualIdentityService.countContainerTabs(),
+    1,
+    "1 container tab created"
+  );
+  is(
+    ContextualIdentityService.countContainerTabs(1),
+    1,
+    "1 container tab created with id 1"
+  );
+  is(
+    ContextualIdentityService.countContainerTabs(2),
+    0,
+    "0 container tabs created with id 2"
+  );
+
+  openTabInUserContext(1);
+  is(
+    ContextualIdentityService.countContainerTabs(),
+    2,
+    "2 container tabs created"
+  );
+  is(
+    ContextualIdentityService.countContainerTabs(1),
+    2,
+    "2 container tabs created with id 1"
+  );
+  is(
+    ContextualIdentityService.countContainerTabs(2),
+    0,
+    "0 container tabs created with id 2"
+  );
+
+  openTabInUserContext(2);
+  is(
+    ContextualIdentityService.countContainerTabs(),
+    3,
+    "3 container tab created"
+  );
+  is(
+    ContextualIdentityService.countContainerTabs(1),
+    2,
+    "2 container tabs created with id 1"
+  );
+  is(
+    ContextualIdentityService.countContainerTabs(2),
+    1,
+    "1 container tab created with id 2"
+  );
+
+  await ContextualIdentityService.closeContainerTabs(1);
+  is(
+    ContextualIdentityService.countContainerTabs(),
+    1,
+    "1 container tab created"
+  );
+  is(
+    ContextualIdentityService.countContainerTabs(1),
+    0,
+    "0 container tabs created with id 1"
+  );
+  is(
+    ContextualIdentityService.countContainerTabs(2),
+    1,
+    "1 container tab created with id 2"
+  );
+
+  await ContextualIdentityService.closeContainerTabs();
+  is(
+    ContextualIdentityService.countContainerTabs(),
+    0,
+    "0 container tabs at the end."
+  );
+  is(
+    ContextualIdentityService.countContainerTabs(1),
+    0,
+    "0 container tabs at the end with id 1."
+  );
+  is(
+    ContextualIdentityService.countContainerTabs(2),
+    0,
+    "0 container tabs at the end with id 2."
+  );
+});