Keep completed wash after lane refresh

src/views/dashboards/userDashboard/wash/MyWashStart.vue

@@ -1774,7 +1774,12 @@ watch(
   (newLaneId) => {
     if (newLaneId && newLaneId !== "Any" && !isRestoring.value) {
       fetchSelfServeData().then(() => {
-        if (!allVisibleQuestionsAnswered.value && !washInProgress.value && currentStep.value > steps.QUESTIONS) {
+        if (
+          !allVisibleQuestionsAnswered.value &&
+          !washInProgress.value &&
+          currentStep.value > steps.QUESTIONS &&
+          currentStep.value < steps.COMPLETED
+        ) {
           currentStep.value = steps.QUESTIONS;
         }
       });

tests/unit/my-wash-start-production.spec.js

@@ -70,6 +70,7 @@ describe("MyWashStart.vue production recovery contracts", () => {
     expect(source).toContain("isCompletingWash.value ||");
     expect(source).toContain("currentStep.value === steps.COMPLETED");
     expect(source).toContain('<template v-if="shouldShowWashFlow">');
+    expect(source).toContain("currentStep.value < steps.COMPLETED");
   });
 
   it("does not treat the customer's active occupied lane as unavailable", () => {

tests/unit/my-wash-start.spec.js

@@ -391,7 +391,8 @@ describe("MyWashStart", () => {
     mocks.markDestroying.mockClear();
     mocks.fetchCustomerVehicles.mockClear();
     mocks.fetchVehicleTypeOptions.mockClear();
-    mocks.fetchSelfServeDataInternal.mockClear();
+    mocks.fetchSelfServeDataInternal.mockReset();
+    mocks.fetchSelfServeDataInternal.mockResolvedValue(undefined);
     mocks.fetchWashSummary.mockClear();
     mocks.saveProgress.mockClear();
     mocks.clearProgress.mockClear();
@@ -725,6 +726,62 @@ describe("MyWashStart", () => {
     expect(wrapper.find('[data-testid="completed-step-stub"]').exists()).toBe(true);
   });
 
+  it("does not let a late lane refresh move a completed wash back to questions", async () => {
+    mocks.doesCurrentDepartmentSelectionHaveSelfServeEnabled.value = false;
+    mocks.restoredProgressPayload = {
+      washInProgress: true,
+      washLaneId: 7,
+      washStartTime: Date.now() - 20_000,
+      licensePlateInput: "AB12345",
+      vehicleTypeSelect: 2,
+      radioWashType: "Manual",
+      radioLaneOption: 7,
+      customerNumberInput: 12345679,
+      isForcingNearestDepartment: false,
+      forceNearestDepartmentEvaluationId: 0,
+      answers: {},
+      completedTasks: {},
+      currentStep: 4,
+    };
+
+    const pendingFetchResolvers = [];
+    mocks.fetchSelfServeDataInternal.mockImplementation(
+      () =>
+        new Promise((resolve) => {
+          pendingFetchResolvers.push(resolve);
+        })
+    );
+
+    const wrapper = mountWithApp(MyWashStart, {
+      global: {
+        stubs: stubComponents,
+      },
+    });
+
+    await flushPromises();
+
+    const guidedActions = wrapper
+      .get('[data-testid="self-serve-bottom-actions"]')
+      .get('[data-testid="self-serve-guided-bottom-actions"]');
+
+    for (let index = 0; index < 5; index += 1) {
+      await guidedActions.get('[data-testid="self-serve-guided-next"]').trigger("click");
+    }
+
+    await guidedActions.get('[data-testid="self-serve-nav-complete"]').trigger("click");
+    await new Promise((resolve) => setTimeout(resolve, 260));
+    await flushPromises();
+
+    expect(wrapper.find('[data-testid="completed-step-stub"]').exists()).toBe(true);
+
+    pendingFetchResolvers.forEach((resolve) => resolve(null));
+    await flushPromises();
+    await nextTick();
+
+    expect(wrapper.find('[data-testid="self-serve-disabled-warning"]').exists()).toBe(false);
+    expect(wrapper.find('[data-testid="completed-step-stub"]').exists()).toBe(true);
+  });
+
   it("adds an unknown registration as customer vehicle before continuing from vehicle step", async () => {
     const wrapper = mountWithApp(MyWashStart, {
       global: {