Add comprehensive unit and e2e tests for invoice collection, queue logic, and modal interactions:

- Introduced e2e test for "Change Invoice Collection" in `change-invoice-collection.spec.ts`.
- Added unit tests for `CollectedOrderInvoiceOverview.vue` including edit flow for `closed_at`.
- Implemented tests for queue reliability, state handling, and customer actions:
  - `CollectedOrderInvoicesQueueHistory.vue`: polling, error handling, richer diagnostics, and retry logic.
  - `InvoicingBillingPeriod` views: refresh and queue state handling.
- Enhanced test coverage for Stripe queue functionality and related actions.

tests/unit/action-settings-wheel-button.spec.js

@@ -3,6 +3,7 @@ import { mount } from "@vue/test-utils";
 import { beforeEach, describe, expect, it, vi } from "vitest";
 import { createI18n } from "vue-i18n";
 import ActionSettingsWheelButton from "@/components/displays/buttons/ActionSettingsWheelButton.vue";
+import { SessionUser } from "@/components/session/token/SessionUser.vue";
 
 const getUserIdMock = vi.hoisted(() =>
   vi.fn(() => Promise.resolve({ data: { data: { user_id: 777 } } }))
@@ -128,6 +129,7 @@ const flushMicrotasks = async () => {
 describe("ActionSettingsWheelButton", () => {
   beforeEach(() => {
     getUserIdMock.mockClear();
+    SessionUser.objects.orders.functions.showChangeInvoiceCollectionForm.mockClear();
   });
 
   it("resolves customer user id once on mount and not on unrelated rerenders", async () => {
@@ -181,4 +183,80 @@ describe("ActionSettingsWheelButton", () => {
     await flushMicrotasks();
     expect(getUserIdMock).not.toHaveBeenCalled();
   });
+
+  it("routes 'change invoice collection' action without opening a new tab", async () => {
+    const windowOpenSpy = vi.spyOn(window, "open").mockImplementation(() => null);
+
+    const wrapper = mount(ActionSettingsWheelButton, {
+      props: {
+        order_id: 42,
+        invoice_collection_id: 991,
+      },
+      slots: {
+        actions: "",
+      },
+      global: {
+        plugins: [i18n],
+        stubs: {
+          CustomerModal: { template: "<div />" },
+        },
+      },
+    });
+
+    await flushMicrotasks();
+    await wrapper.find(".dropdown-trigger button").trigger("click");
+
+    const buttons = wrapper.findAll("button.dropdown-item-action");
+    const changeInvoiceCollectionButton = buttons.find((buttonWrapper) =>
+      buttonWrapper.text().includes("admin.pos.settings_wheel.change_invoice_collection")
+    );
+
+    expect(changeInvoiceCollectionButton).toBeTruthy();
+    await changeInvoiceCollectionButton.trigger("click");
+    await flushMicrotasks();
+
+    expect(SessionUser.objects.orders.functions.showChangeInvoiceCollectionForm).toHaveBeenCalledTimes(1);
+    expect(SessionUser.objects.orders.functions.showChangeInvoiceCollectionForm).toHaveBeenCalledWith(42, expect.any(Function));
+    expect(windowOpenSpy).not.toHaveBeenCalled();
+
+    windowOpenSpy.mockRestore();
+  });
+
+  it("routes 'view invoice collection in new tab' action to window.open only", async () => {
+    const windowOpenSpy = vi.spyOn(window, "open").mockImplementation(() => null);
+
+    const wrapper = mount(ActionSettingsWheelButton, {
+      props: {
+        order_id: 42,
+        invoice_collection_id: 777,
+      },
+      slots: {
+        actions: "",
+      },
+      global: {
+        plugins: [i18n],
+        stubs: {
+          CustomerModal: { template: "<div />" },
+        },
+      },
+    });
+
+    await flushMicrotasks();
+    SessionUser.objects.orders.functions.showChangeInvoiceCollectionForm.mockClear();
+    await wrapper.find(".dropdown-trigger button").trigger("click");
+
+    const buttons = wrapper.findAll("button.dropdown-item-action");
+    const viewInvoiceCollectionButton = buttons.find((buttonWrapper) =>
+      buttonWrapper.text().includes("admin.pos.settings_wheel.view_invoice_collection_new_tab")
+    );
+
+    expect(viewInvoiceCollectionButton).toBeTruthy();
+    await viewInvoiceCollectionButton.trigger("click");
+    await flushMicrotasks();
+
+    expect(windowOpenSpy).toHaveBeenCalledWith("/superuser/invoices/777", "_blank");
+    expect(SessionUser.objects.orders.functions.showChangeInvoiceCollectionForm).not.toHaveBeenCalled();
+
+    windowOpenSpy.mockRestore();
+  });
 });