Migrate playwright to typescript

tests/e2e/repo-code.test.e2e.ts

@@ -0,0 +1,84 @@
+// @watch start
+// web_src/js/features/repo-code.js
+// web_src/css/repo.css
+// services/gitdiff/**
+// @watch end
+
+import {expect} from '@playwright/test';
+import {test, login_user, load_logged_in_context} from './utils_e2e.ts';
+
+test.beforeAll(async ({browser}, workerInfo) => {
+  await login_user(browser, workerInfo, 'user2');
+});
+
+async function assertSelectedLines(page, nums) {
+  const pageAssertions = async () => {
+    expect(
+      await Promise.all((await page.locator('tr.active [data-line-number]').all()).map((line) => line.getAttribute('data-line-number'))),
+    )
+      .toStrictEqual(nums);
+
+    // the first line selected has an action button
+    if (nums.length > 0) await expect(page.locator(`#L${nums[0]} .code-line-button`)).toBeVisible();
+  };
+
+  await pageAssertions();
+
+  // URL has the expected state
+  expect(new URL(page.url()).hash)
+    .toEqual(nums.length === 0 ? '' : nums.length === 1 ? `#L${nums[0]}` : `#L${nums[0]}-L${nums.at(-1)}`);
+
+  // test selection restored from URL hash
+  await page.reload();
+  return pageAssertions();
+}
+
+test('Line Range Selection', async ({browser}, workerInfo) => {
+  const context = await load_logged_in_context(browser, workerInfo, 'user2');
+  const page = await context.newPage();
+
+  const filePath = '/user2/repo1/src/branch/master/README.md?display=source';
+
+  const response = await page.goto(filePath);
+  expect(response?.status()).toBe(200);
+
+  await assertSelectedLines(page, []);
+  await page.locator('span#L1').click();
+  await assertSelectedLines(page, ['1']);
+  await page.locator('span#L3').click({modifiers: ['Shift']});
+  await assertSelectedLines(page, ['1', '2', '3']);
+  await page.locator('span#L2').click();
+  await assertSelectedLines(page, ['2']);
+  await page.locator('span#L1').click({modifiers: ['Shift']});
+  await assertSelectedLines(page, ['1', '2']);
+
+  // out-of-bounds end line
+  await page.goto(`${filePath}#L1-L100`);
+  await assertSelectedLines(page, ['1', '2', '3']);
+});
+
+test('Readable diff', async ({page}, workerInfo) => {
+  // remove this when the test covers more (e.g. accessibility scans or interactive behaviour)
+  test.skip(workerInfo.project.name !== 'firefox', 'This currently only tests the backend-generated HTML code and it is not necessary to test with multiple browsers.');
+  const expectedDiffs = [
+    {id: 'testfile-2', removed: 'e', added: 'a'},
+    {id: 'testfile-3', removed: 'allo', added: 'ola'},
+    {id: 'testfile-4', removed: 'hola', added: 'native'},
+    {id: 'testfile-5', removed: 'native', added: 'ubuntu-latest'},
+    {id: 'testfile-6', added: '- runs-on: '},
+    {id: 'testfile-7', removed: 'ubuntu', added: 'debian'},
+  ];
+  for (const thisDiff of expectedDiffs) {
+    const response = await page.goto('/user2/diff-test/commits/branch/main');
+    expect(response?.status()).toBe(200); // Status OK
+    await page.getByText(`Patch: ${thisDiff.id}`).click();
+    if (thisDiff.removed) {
+      await expect(page.getByText(thisDiff.removed, {exact: true})).toHaveClass(/removed-code/);
+      await expect(page.getByText(thisDiff.removed, {exact: true})).toHaveCSS('background-color', 'rgb(252, 165, 165)');
+    }
+    if (thisDiff.added) {
+      await expect(page.getByText(thisDiff.added, {exact: true})).toHaveClass(/added-code/);
+      await expect(page.getByText(thisDiff.added, {exact: true})).toHaveCSS('background-color', 'rgb(134, 239, 172)');
+    }
+  }
+});