chore(ui): always pass test locations to skip loading unnecessary test files

packages/playwright/src/isomorphic/testTree.ts

@@ -329,8 +329,8 @@ export class TestTree {
     return this._treeItemById.get(id);
   }
 
-  collectTestIds(treeItem?: TreeItem): Set<string> {
-    return treeItem ? collectTestIds(treeItem) : new Set();
+  collectTestIds(treeItem: TreeItem) {
+    return collectTestIds(treeItem);
   }
 }
 
@@ -371,18 +371,27 @@ export function sortAndPropagateStatus(treeItem: TreeItem) {
     treeItem.status = 'passed';
 }
 
-export function collectTestIds(treeItem: TreeItem): Set<string> {
+function collectTestIds(treeItem: TreeItem): { testIds: Set<string>, locations: Set<string> } {
   const testIds = new Set<string>();
+  const locations = new Set<string>(); // TODO
   const visit = (treeItem: TreeItem) => {
+    if (treeItem.kind !== 'test' && treeItem.kind !== 'case') {
+      treeItem.children.forEach(visit);
+      return;
+    }
+
+    let file: TreeItem = treeItem;
+    while (file && file.parent && !(file.kind === 'group' && file.subKind === 'file'))
+      file = file.parent;
+    locations.add(file.location.file);
+
     if (treeItem.kind === 'case')
-      treeItem.tests.map(t => t.id).forEach(id => testIds.add(id));
-    else if (treeItem.kind === 'test')
-      testIds.add(treeItem.id);
+      treeItem.tests.forEach(test => testIds.add(test.id));
     else
-      treeItem.children?.forEach(visit);
+      testIds.add(treeItem.id);
   };
   visit(treeItem);
-  return testIds;
+  return { testIds, locations };
 }
 
 export const statusEx = Symbol('statusEx');

packages/playwright/src/mcp/test/testTools.ts

@@ -49,7 +49,7 @@ export const runTests = defineTestTool({
 
   handle: async (context, params) => {
     const { output } = await context.runTestsWithGlobalSetupAndPossiblePause({
-      locations: params.locations,
+      locations: params.locations ?? [],
       projects: params.projects,
       disableConfigReporters: true,
     });
@@ -74,6 +74,7 @@ export const debugTest = defineTestTool({
   handle: async (context, params) => {
     const { output, status } = await context.runTestsWithGlobalSetupAndPossiblePause({
       headed: context.computedHeaded,
+      locations: [], // we can make this faster by passing the test's location, so we don't need to scan all tests to find the ID
       testIds: [params.test.id],
       // For automatic recovery
       timeout: 0,

packages/playwright/src/runner/testRunner.ts

@@ -331,7 +331,7 @@ export class TestRunner extends EventEmitter<TestRunnerEventMap> {
 
     config.cliListOnly = false;
     config.cliPassWithNoTests = true;
-    config.cliArgs = params.locations || [];
+    config.cliArgs = params.locations ?? ['dont-match-anything']; // for performance reasons, we require test runner users to pass `locations`. they can opt out by passing [].
     config.cliGrep = params.grep;
     config.cliGrepInvert = params.grepInvert;
     config.cliProjectFilter = params.projects?.length ? params.projects : undefined;

packages/trace-viewer/src/ui/uiModeTestListView.tsx

@@ -39,7 +39,7 @@ export const TestListView: React.FC<{
   testTree: TestTree,
   testServerConnection: TestServerConnection | undefined,
   testModel?: TeleSuiteUpdaterTestModel,
-  runTests: (mode: 'bounce-if-busy' | 'queue-if-busy', testIds: Set<string>) => void,
+  runTests: (mode: 'bounce-if-busy' | 'queue-if-busy', testIds: Set<string>, locations: Set<string>) => void,
   runningState?: { testIds: Set<string>, itemSelectedByUser?: boolean, completed?: boolean },
   watchAll: boolean,
   watchedTreeIds: { value: Set<string> },
@@ -139,7 +139,8 @@ export const TestListView: React.FC<{
 
   const runTreeItem = (treeItem: TreeItem) => {
     setSelectedTreeItemId(treeItem.id);
-    runTests('bounce-if-busy', testTree.collectTestIds(treeItem));
+    const { testIds, locations } = testTree.collectTestIds(treeItem);
+    runTests('bounce-if-busy', testIds, locations);
   };
 
   const handleTagClick = (e: React.MouseEvent, tag: string) => {

packages/trace-viewer/src/ui/uiModeView.tsx

@@ -66,6 +66,14 @@ if (queryParams.updateSnapshots && !['all', 'changed', 'none', 'missing'].includ
 
 const isMac = navigator.platform === 'MacIntel';
 
+function escapeRegex(text: string) {
+  // playwright interprets absolute paths as regex,
+  // removing the leading slash prevents that.
+  if (text.startsWith('/'))
+    text = text.substring(1);
+  return text.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
+}
+
 export const UIModeView: React.FC<{}> = ({
 }) => {
   const [filterText, setFilterText] = React.useState<string>('');
@@ -88,7 +96,7 @@ export const UIModeView: React.FC<{}> = ({
   const [watchAll, setWatchAll] = useSetting<boolean>('watch-all', false);
   const [watchedTreeIds, setWatchedTreeIds] = React.useState<{ value: Set<string> }>({ value: new Set() });
   const commandQueue = React.useRef(Promise.resolve());
-  const runTestBacklog = React.useRef<Set<string>>(new Set());
+  const runTestBacklog = React.useRef<{ testIds: Set<string>, locations: Set<string> }>({ testIds: new Set(), locations: new Set() });
   const [collapseAllCount, setCollapseAllCount] = React.useState(0);
   const [expandAllCount, setExpandAllCount] = React.useState(0);
   const [isDisconnected, setIsDisconnected] = React.useState(false);
@@ -251,16 +259,19 @@ export const UIModeView: React.FC<{}> = ({
     return { testTree };
   }, [filterText, testModel, statusFilters, projectFilters, setVisibleTestIds, runningState, isRunningTest, mergeFiles]);
 
-  const runTests = React.useCallback((mode: 'queue-if-busy' | 'bounce-if-busy', testIds: Set<string>) => {
+  const runTests = React.useCallback((mode: 'queue-if-busy' | 'bounce-if-busy', testIds: Set<string>, locations: Set<string>) => {
     if (!testServerConnection || !testModel)
       return;
     if (mode === 'bounce-if-busy' && isRunningTest)
       return;
 
-    runTestBacklog.current = new Set([...runTestBacklog.current, ...testIds]);
+    for (const testId of testIds)
+      runTestBacklog.current.testIds.add(testId);
+    for (const location of locations)
+      runTestBacklog.current.locations.add(location);
     commandQueue.current = commandQueue.current.then(async () => {
-      const testIds = runTestBacklog.current;
-      runTestBacklog.current = new Set();
+      const { testIds, locations } = runTestBacklog.current;
+      runTestBacklog.current = { testIds: new Set(), locations: new Set() };
       if (!testIds.size)
         return;
 
@@ -282,7 +293,7 @@ export const UIModeView: React.FC<{}> = ({
       setRunningState({ testIds });
 
       await testServerConnection.runTests({
-        locations: queryParams.args,
+        locations: [...locations].map(escapeRegex),
         grep: queryParams.grep,
         grepInvert: queryParams.grepInvert,
         testIds: [...testIds],
@@ -302,6 +313,8 @@ export const UIModeView: React.FC<{}> = ({
     });
   }, [projectFilters, isRunningTest, testModel, testServerConnection, updateSnapshots, singleWorker]);
 
+  const runVisibleTests = React.useCallback(() => runTests('bounce-if-busy', visibleTestIds, new Set(queryParams.args)), [runTests, visibleTestIds]);
+
   React.useEffect(() => {
     if (!testServerConnection || !teleSuiteUpdater)
       return;
@@ -329,12 +342,16 @@ export const UIModeView: React.FC<{}> = ({
       const testTree = new TestTree('', testModel.rootSuite, testModel.loadErrors, projectFilters, queryParams.pathSeparator, mergeFiles);
 
       const testIds: string[] = [];
+      const locations: string[] = [];
       const set = new Set(params.testFiles);
       if (watchAll) {
         const visit = (treeItem: TreeItem) => {
           const fileName = treeItem.location.file;
-          if (fileName && set.has(fileName))
-            testIds.push(...testTree.collectTestIds(treeItem));
+          if (fileName && set.has(fileName)) {
+            const { testIds: ids, locations: locs } = testTree.collectTestIds(treeItem);
+            testIds.push(...ids);
+            locations.push(...locs);
+          }
           if (treeItem.kind === 'group' && treeItem.subKind === 'folder')
             treeItem.children.forEach(visit);
         };
@@ -343,11 +360,14 @@ export const UIModeView: React.FC<{}> = ({
         for (const treeId of watchedTreeIds.value) {
           const treeItem = testTree.treeItemById(treeId);
           const fileName = treeItem?.location.file;
-          if (fileName && set.has(fileName))
-            testIds.push(...testTree.collectTestIds(treeItem));
+          if (fileName && set.has(fileName)) {
+            const { testIds: ids, locations: locs } = testTree.collectTestIds(treeItem);
+            testIds.push(...ids);
+            locations.push(...locs);
+          }
         }
       }
-      runTests('queue-if-busy', new Set(testIds));
+      runTests('queue-if-busy', new Set(testIds), new Set(locations));
     });
     return () => disposable.dispose();
   }, [runTests, testServerConnection, watchAll, watchedTreeIds, teleSuiteUpdater, projectFilters, mergeFiles]);
@@ -365,14 +385,14 @@ export const UIModeView: React.FC<{}> = ({
         testServerConnection?.stopTestsNoReply({});
       } else if (e.code === 'F5') {
         e.preventDefault();
-        runTests('bounce-if-busy', visibleTestIds);
+        runVisibleTests();
       }
     };
     addEventListener('keydown', onShortcutEvent);
     return () => {
       removeEventListener('keydown', onShortcutEvent);
     };
-  }, [runTests, reloadTests, testServerConnection, visibleTestIds, isShowingOutput]);
+  }, [runVisibleTests, reloadTests, testServerConnection, isShowingOutput]);
 
   const dialogRef = React.useRef<HTMLDialogElement>(null);
   const openInstallDialog = React.useCallback((e: React.MouseEvent) => {
@@ -456,7 +476,7 @@ export const UIModeView: React.FC<{}> = ({
           projectFilters={projectFilters}
           setProjectFilters={setProjectFilters}
           testModel={testModel}
-          runTests={() => runTests('bounce-if-busy', visibleTestIds)} />
+          runTests={() => runVisibleTests()} />
         <Toolbar className='section-toolbar' noMinHeight={true}>
           {!isRunningTest && !progress && <div className='section-title'>Tests</div>}
           {!isRunningTest && progress && <div data-testid='status-line' className='status-line'>
@@ -465,7 +485,7 @@ export const UIModeView: React.FC<{}> = ({
           {isRunningTest && progress && <div data-testid='status-line' className='status-line'>
             <div>Running {progress.passed}/{runningState.testIds.size} passed ({(progress.passed / runningState.testIds.size) * 100 | 0}%)</div>
           </div>}
-          <ToolbarButton icon='play' title='Run all — F5' onClick={() => runTests('bounce-if-busy', visibleTestIds)} disabled={isRunningTest || isLoading}></ToolbarButton>
+          <ToolbarButton icon='play' title='Run all — F5' onClick={() => runVisibleTests()} disabled={isRunningTest || isLoading}></ToolbarButton>
           <ToolbarButton icon='debug-stop' title={'Stop — ' + (isMac ? '⇧F5' : 'Shift + F5')} onClick={() => testServerConnection?.stopTests({})} disabled={!isRunningTest || isLoading}></ToolbarButton>
           <ToolbarButton icon='eye' title='Watch all' toggled={watchAll} onClick={() => {
             setWatchedTreeIds({ value: new Set() });

tests/playwright-test/test-server.spec.ts

@@ -60,6 +60,7 @@ class TestServerConnectionUnderTest extends TestServerConnection {
     this.onStdio(params => this.events.push(['stdio', params]));
     this.onLoadTraceRequested(params => this.events.push(['loadTraceRequested', params]));
     this.onTestPaused(params => this.events.push(['testPaused', params]));
+    this.onReport(params => this.events.push(['report', params]));
   }
 }
 
@@ -166,7 +167,7 @@ test('stdio interception', async ({ startTestServer, writeFiles }) => {
       `,
   });
 
-  const tests = await testServerConnection.runTests({ trace: 'on' });
+  const tests = await testServerConnection.runTests({ trace: 'on', locations: [] });
   expect(tests).toEqual({ status: 'passed' });
   await expect.poll(() => testServerConnection.events).toEqual(expect.arrayContaining([
     ['stdio', { type: 'stderr', text: 'this goes to stderr\n' }],
@@ -247,7 +248,7 @@ test('timeout override', async ({ startTestServer, writeFiles }) => {
       `,
   });
 
-  expect(await testServerConnection.runTests({ timeout: 42 })).toEqual({ status: 'passed' });
+  expect(await testServerConnection.runTests({ timeout: 42, locations: [] })).toEqual({ status: 'passed' });
 });
 
 test('PLAYWRIGHT_TEST environment variable', async ({ startTestServer, writeFiles }) => {
@@ -261,7 +262,7 @@ test('PLAYWRIGHT_TEST environment variable', async ({ startTestServer, writeFile
       });
       `,
   });
-  expect(await testServerConnection.runTests({})).toEqual({ status: 'passed' });
+  expect(await testServerConnection.runTests({ locations: [] })).toEqual({ status: 'passed' });
 });
 
 test('pauseAtEnd', async ({ startTestServer, writeFiles }) => {
@@ -275,7 +276,7 @@ test('pauseAtEnd', async ({ startTestServer, writeFiles }) => {
       `,
   });
 
-  const promise = testServerConnection.runTests({ pauseAtEnd: true });
+  const promise = testServerConnection.runTests({ pauseAtEnd: true, locations: [] });
   await expect.poll(() => testServerConnection.events.find(e => e[0] === 'testPaused')).toEqual(['testPaused', { errors: [] }]);
   await testServerConnection.stopTests({});
   expect(await promise).toEqual({ status: 'interrupted' });
@@ -293,7 +294,7 @@ test('pauseOnError', async ({ startTestServer, writeFiles }) => {
       `,
   });
 
-  const promise = testServerConnection.runTests({ pauseOnError: true });
+  const promise = testServerConnection.runTests({ pauseOnError: true, locations: [] });
   await expect.poll(() => testServerConnection.events.some(e => e[0] === 'testPaused')).toBeTruthy();
   expect(testServerConnection.events.find(e => e[0] === 'testPaused')[1]).toEqual({
     errors: [
@@ -324,6 +325,6 @@ test('pauseOnError no errors', async ({ startTestServer, writeFiles }) => {
       `,
   });
 
-  expect(await testServerConnection.runTests({ pauseOnError: true })).toEqual({ status: 'passed' });
+  expect(await testServerConnection.runTests({ pauseOnError: true, locations: [] })).toEqual({ status: 'passed' });
   expect(testServerConnection.events.filter(e => e[0] === 'testPaused')).toEqual([]);
 });