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test(e2e): add Playwright UI non-regression suite
21 framework-agnostic specs (tests/e2e/smocker.spec.ts) locking the observable behaviour of the web UI: shell, routing, links, all pages, navigation, the mock editor (open/cancel, prefill, create via form and raw YAML), lock/unlock, autorefresh, session new/select/reset/rename, and file import. Assertions target stable text / hrefs / URLs / SVG (never framework DOM), so the same suite passes against the pre-migration and post-migration UIs. Output goes under build/e2e. Requires @playwright/test (in devDependencies) and a running server pointed at via SMOCKER_E2E_URL. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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‎tests/e2e/playwright.config.ts‎

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import { defineConfig, devices } from "@playwright/test";
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// Non-regression (TNR) E2E suite for the Smocker web UI. The same specs must pass against the
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// pre-migration UI (React 16 / antd 4 / Parcel) and the post-migration UI (React 19 / antd / Vite),
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// so assertions target stable, framework-agnostic content (visible text, data, URLs, SVG presence)
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// rather than antd-specific DOM. Point at a running server via SMOCKER_E2E_URL.
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export default defineConfig({
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testDir: ".",
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// Keep all generated output under the repo's build/ directory (never at the repo root).
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outputDir: "../../build/e2e/test-results",
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timeout: 30_000,
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expect: { timeout: 10_000 },
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fullyParallel: false,
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retries: 0,
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reporter: [["list"]],
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use: {
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baseURL: process.env.SMOCKER_E2E_URL || "http://localhost:18081",
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trace: "off",
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actionTimeout: 10_000,
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},
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projects: [{ name: "chromium", use: { ...devices["Desktop Chrome"] } }],
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});

‎tests/e2e/smocker.spec.ts‎

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import { expect, test } from "@playwright/test";
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// Non-regression (TNR) suite locking the OBSERVABLE FEATURES of the Smocker web UI against a
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// server seeded with tests/sessions (session "Session #1" id 3giPMr5IR, one mock GET /test ->
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// {"message":"test"} id YnJEM95SR, one matching history entry). Passing this suite on the new UI
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// means feature parity with the old one. Assertions target stable text / anchor hrefs / URLs /
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// SVG — never framework DOM or ARIA roles (antd 4 exposed nav items as role=link, antd 6 as
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// role=menuitem, but both render real <a href> anchors) — so they hold across the migration.
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//
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// Ordering: reads run before any session-creating test (a freshly-seeded server has exactly one
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// session, shown by default); mutating tests come last, destructive "Reset" is very last. Serial.
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const MOCK_ID = "YnJEM95SR";
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const HISTORY = "/pages/history";
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const MOCKS = "/pages/mocks";
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const intro = {
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history:
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"This is the history of the requests made during the selected session.",
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mocks: "This is the list of declared mocks ordered by priority.",
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visualize: "This is a graphical representation of call history.",
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};
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test.describe.configure({ mode: "serial" });
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// --- Shell & routing -------------------------------------------------------------------------
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test("app shell: navbar, sidebar, seeded session, no page errors", async ({ page }) => {
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const errors: string[] = [];
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page.on("pageerror", (e) => errors.push(e.message));
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await page.goto("/");
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await expect(page).toHaveTitle(/Smocker/);
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await expect(page.getByText("Documentation")).toBeVisible();
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await expect(page.getByText("Session #1")).toBeVisible();
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await expect(page.getByText("New Session")).toBeVisible();
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await expect(page.getByText("Reset Sessions")).toBeVisible();
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expect(errors, `page errors: ${errors.join(" | ")}`).toEqual([]);
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});
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test("root redirects to history with a session selected", async ({ page }) => {
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await page.goto("/");
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await expect(page).toHaveURL(/\/pages\/history/);
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await expect(page).toHaveURL(/session=/);
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});
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// --- Links -----------------------------------------------------------------------------------
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test("navbar & footer links point to the right targets", async ({ page }) => {
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await page.goto(HISTORY);
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// Navbar nav anchors (nav href carries a ?session= query).
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await expect(page.locator('a[href^="/pages/history?"]').first()).toBeVisible();
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await expect(page.locator('a[href^="/pages/mocks?"]').first()).toBeVisible();
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// External links open in a new tab.
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await expect(
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page.locator('a[href="https://smocker.dev/"]').first(),
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).toHaveAttribute("target", "_blank");
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await expect(
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page.locator('a[href="https://github.com/smocker-dev/smocker"]').first(),
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).toHaveAttribute("target", "_blank");
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await expect(page.locator('a[href="https://smocker.dev"]').first()).toBeVisible();
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});
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test("history entry deep links: 'Matched Mock' and 'Create a new mock from entry'", async ({
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page,
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}) => {
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await page.goto(HISTORY);
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await expect(page.locator(`a[href="/pages/mocks/${MOCK_ID}"]`).first()).toBeVisible();
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await expect(page.locator('a[href="/pages/mocks"]').first()).toBeVisible();
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});
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// --- Page content (features) -----------------------------------------------------------------
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test("history page shows the seeded call", async ({ page }) => {
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await page.goto(HISTORY);
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await expect(page.getByText(intro.history)).toBeVisible();
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await expect(page.getByText("/test", { exact: true }).first()).toBeVisible();
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await expect(page.getByText("Matched Mock").first()).toBeVisible();
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await expect(page.getByText("Copy as curl").first()).toBeVisible();
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await expect(page.getByText("Autorefresh").first()).toBeVisible();
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});
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test("mocks page shows the seeded mock", async ({ page }) => {
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await page.goto(MOCKS);
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await expect(page.getByText(intro.mocks)).toBeVisible();
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await expect(page.getByText(new RegExp(MOCK_ID)).first()).toBeVisible();
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await expect(page.getByText("Add Mocks").first()).toBeVisible();
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});
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test("visualize page renders the sequence diagram", async ({ page }) => {
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await page.goto("/pages/visualize");
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await expect(page.getByText(intro.visualize)).toBeVisible();
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await expect(page.getByText("Diagram of calls")).toBeVisible();
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await expect(page.locator("svg").first()).toBeVisible();
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});
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// --- Navigation & interactions ---------------------------------------------------------------
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test("navbar navigates between History and Mocks", async ({ page }) => {
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await page.goto(HISTORY);
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await page.locator('a[href^="/pages/mocks?"]').first().click();
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await expect(page).toHaveURL(/\/pages\/mocks/);
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await expect(page.getByText(intro.mocks)).toBeVisible();
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await page.locator('a[href^="/pages/history?"]').first().click();
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await expect(page).toHaveURL(/\/pages\/history/);
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await expect(page.getByText(intro.history)).toBeVisible();
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});
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test("history page 'Visualize' link opens the diagram", async ({ page }) => {
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await page.goto(HISTORY);
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await page.locator('a[href^="/pages/visualize"]').first().click();
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await expect(page).toHaveURL(/\/pages\/visualize/);
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await expect(page.getByText(intro.visualize)).toBeVisible();
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});
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test("'Matched Mock' link opens the mock detail route", async ({ page }) => {
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await page.goto(HISTORY);
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await page.locator(`a[href="/pages/mocks/${MOCK_ID}"]`).first().click();
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await expect(page).toHaveURL(new RegExp(`/pages/mocks/${MOCK_ID}`));
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await expect(page.getByText(new RegExp(MOCK_ID)).first()).toBeVisible();
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});
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test("'Add Mocks' opens the editor with Save/Cancel and closes on Cancel", async ({ page }) => {
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await page.goto(MOCKS);
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await page.getByRole("button", { name: "Add Mocks" }).click();
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await expect(page.getByRole("button", { name: "Save" })).toBeVisible();
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const cancel = page.getByRole("button", { name: "Cancel" });
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await expect(cancel).toBeVisible();
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await cancel.click();
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await expect(page.getByRole("button", { name: "Save" })).toHaveCount(0);
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});
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test("'Create a new mock from entry' opens the prefilled editor", async ({ page }) => {
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await page.goto(HISTORY);
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// Wait for the automatic session selection to settle (?session in the URL) and the entry to
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// render before clicking, so the create-from-entry navigation isn't clobbered by the
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// session-selection redirect and reliably carries the prefilled editor state.
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await expect(page).toHaveURL(/session=/);
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await expect(page.getByText(intro.history)).toBeVisible();
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await page.locator('a[href="/pages/mocks"]').first().click();
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await expect(page).toHaveURL(/\/pages\/mocks/);
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await expect(page.getByRole("button", { name: "Save" })).toBeVisible();
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});
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// --- Mock creation (mutations) ---------------------------------------------------------------
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// Whether we run against the legacy (Parcel/antd4/CodeMirror5) build. Set by the TNR gate.
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const LEGACY = process.env.SMOCKER_E2E_VARIANT === "old";
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test("create a mock via the Visual Editor form", async ({ page }) => {
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await page.goto(MOCKS);
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await page.getByRole("button", { name: "Add Mocks" }).click();
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// The Visual Editor is the default tab; set a request path (method defaults to GET) and save.
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await page.locator("#request_path").fill("/tnr-form");
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await page.getByRole("button", { name: "Save" }).click();
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await expect(page.getByRole("button", { name: "Save" })).toHaveCount(0); // drawer closed
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await expect(page.getByText("/tnr-form").first()).toBeVisible(); // mock now listed
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});
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test("create a mock via the Raw YAML editor", async ({ page }) => {
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// The raw editor is a CodeMirror instance; driving it differs between CM5 (legacy) and CM6.
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test.skip(LEGACY, "raw-editor driving is CodeMirror-version specific; covered on the new UI");
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await page.goto(MOCKS);
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await page.getByRole("button", { name: "Add Mocks" }).click();
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await page.getByRole("tab", { name: /Raw YAML/i }).click();
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const editor = page.locator('.cm-content[contenteditable="true"]:visible').first();
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await editor.click();
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await page.keyboard.press("ControlOrMeta+A");
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await page.keyboard.press("Delete");
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// Single-line flow YAML avoids CodeMirror auto-indentation corrupting block YAML.
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await editor.pressSequentially(
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"[{request: {method: GET, path: /tnr-yaml}, response: {status: 200, body: hi}}]",
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);
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await page.getByRole("button", { name: "Save" }).click();
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await expect(page.getByRole("button", { name: "Save" })).toHaveCount(0);
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await expect(page.getByText("/tnr-yaml").first()).toBeVisible();
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});
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test("lock and unlock a mock", async ({ page }) => {
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await page.goto(MOCKS);
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await page.getByText("Session #1", { exact: true }).click();
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const lockToggle = () =>
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page
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.locator("button:has(.anticon-lock), button:has(.anticon-unlock)")
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.first();
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await expect(lockToggle()).toBeVisible();
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const isLockEndpoint = (r: { url(): string; request(): { method(): string } }) =>
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/\/mocks\/(un)?lock$/.test(new URL(r.url()).pathname) &&
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r.request().method() === "POST";
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const first = page.waitForResponse(isLockEndpoint);
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await lockToggle().click();
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expect((await first).status()).toBe(200);
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const second = page.waitForResponse(isLockEndpoint);
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await lockToggle().click();
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expect((await second).status()).toBe(200);
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});
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test("autorefresh can be toggled on the history page", async ({ page }) => {
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await page.goto(HISTORY);
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await expect(page).toHaveURL(/session=/);
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await page.getByRole("button", { name: "Autorefresh" }).click();
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// Enabling autorefresh switches the control to its "pause" state.
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await expect(page.locator(".anticon-pause-circle").first()).toBeVisible();
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});
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// --- Session lifecycle (last; Reset then rename are destructive / name-changing) -------------
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test("'New Session' creates and selects a new session", async ({ page }) => {
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await page.goto(HISTORY);
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const before = await page.getByText(/Session #\d+/).count();
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await page.getByRole("button", { name: "New Session" }).click();
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await expect(page.getByText(/Session #\d+/)).toHaveCount(before + 1);
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});
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test("selecting 'Session #1' in the sidebar shows its seeded mock", async ({ page }) => {
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await page.goto(MOCKS);
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await page.getByText("Session #1", { exact: true }).click();
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await expect(page).toHaveURL(/session=/);
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await expect(page.getByText(new RegExp(MOCK_ID)).first()).toBeVisible();
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});
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test("'Reset Sessions' clears mocks and history", async ({ page }) => {
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await page.goto(MOCKS);
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await page.getByText("Session #1", { exact: true }).click();
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await expect(page.getByText(new RegExp(MOCK_ID)).first()).toBeVisible();
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await page.getByRole("button", { name: "Reset Sessions" }).click();
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await expect(page.getByText("No mocks found.")).toBeVisible();
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await expect(page.getByText(new RegExp(MOCK_ID))).toHaveCount(0);
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});
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// Runs last: renaming changes the "Session #1" label the other tests rely on. After Reset there
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// is a fresh "Session #1" to rename.
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test("rename a session", async ({ page }) => {
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await page.goto(HISTORY);
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await page.getByText("Session #1", { exact: true }).click();
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await page.locator(".anticon-edit").first().click();
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// The edit control reveals an input pre-filled with the current name and a Save button.
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const boxes = page.getByRole("textbox");
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let input = boxes.first();
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for (let i = 0; i < (await boxes.count()); i++) {
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if ((await boxes.nth(i).inputValue()) === "Session #1") {
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input = boxes.nth(i);
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break;
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}
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}
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await input.fill("Renamed by TNR");
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await page.getByRole("button", { name: "Save" }).first().click();
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await expect(page.getByText("Renamed by TNR")).toBeVisible();
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});
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// Last: importing selects the imported session, which would disturb session-selection in later
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// tests, so this runs at the very end.
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test("import a session from a file", async ({ page }) => {
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await page.goto(HISTORY);
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const payload = JSON.stringify([
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{
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id: "tnr-imported-id",
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name: "TNR Imported",
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date: "2020-02-12T00:04:29.5940297+01:00",
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history: [],
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mocks: [
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{
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request: { path: "/imported-tnr", method: "GET" },
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response: {
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status: 200,
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body: "hi",
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headers: { "Content-Type": ["application/json"] },
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},
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state: {
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id: "m-tnr",
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times_count: 0,
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locked: false,
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creation_date: "2020-02-12T00:04:29.5940297+01:00",
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},
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},
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],
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},
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]);
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// The sidebar "Load a session from a file" control is a hidden <input type=file> that reads
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// the file and POSTs it to /sessions/import.
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await page.locator('input[type="file"]').setInputFiles({
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name: "sessions.json",
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mimeType: "application/json",
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buffer: Buffer.from(payload),
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});
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await expect(page.getByText("TNR Imported")).toBeVisible();
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});

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