fix(ui-mode): display no projects error if bad config provided

packages/trace-viewer/src/ui/shared/fullscreenModal.tsx

@@ -0,0 +1,38 @@
+/*
+  Copyright (c) Microsoft Corporation.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+*/
+
+import * as React from 'react';
+import './fullscreenModel.css';
+
+export interface FullscreenModalProps {
+  onClose?: () => void;
+}
+
+export const FullscreenModal: React.FC<
+  React.PropsWithChildren<FullscreenModalProps>
+> = ({ onClose, children }) => {
+  const ref = React.useRef<HTMLDialogElement>(null);
+
+  React.useEffect(() => {
+    ref.current?.showModal();
+  }, []);
+
+  return (
+    <dialog ref={ref} className='fullscreen-modal'>
+      <div className='fullscreen-modal-content'>{children}</div>
+    </dialog>
+  );
+};

packages/trace-viewer/src/ui/shared/fullscreenModel.css

@@ -0,0 +1,29 @@
+/*
+  Copyright (c) Microsoft Corporation.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+*/
+
+.fullscreen-modal {
+  padding: 8px;
+
+  outline: none;
+}
+
+.fullscreen-modal-content {
+  margin: 8px;
+}
+
+.fullscreen-modal::backdrop {
+  background-color: rgba(0, 0, 0, 0.8);
+}

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

@@ -37,6 +37,7 @@ import { TestListView } from './uiModeTestListView';
 import { TraceView } from './uiModeTraceView';
 import { SettingsView } from './settingsView';
 import { DefaultSettingsView } from './defaultSettingsView';
+import { FullscreenModal } from './shared/fullscreenModal';
 
 let xtermSize = { cols: 80, rows: 24 };
 const xtermDataSource: XtermDataSource = {
@@ -98,6 +99,7 @@ export const UIModeView: React.FC<{}> = ({
   const [settingsVisible, setSettingsVisible] = React.useState(false);
   const [testingOptionsVisible, setTestingOptionsVisible] = React.useState(false);
   const [revealSource, setRevealSource] = React.useState(false);
+  const [critcalError, setCriticalError] = React.useState<string | undefined>();
   const onRevealSource = React.useCallback(() => setRevealSource(true), [setRevealSource]);
 
   const showTestingOptions = false;
@@ -114,6 +116,19 @@ export const UIModeView: React.FC<{}> = ({
     });
   }, []);
 
+  const configProjects = React.useMemo(() => {
+    if (!testModel)
+      return;
+
+    const { config } = testModel;
+    return config.configFile
+      ? settings.getObject<string[] | undefined>(
+          config.configFile + ':projects',
+          undefined,
+      )
+      : undefined;
+  }, [testModel]);
+
   // Load tests on startup.
   React.useEffect(() => {
     inputRef.current?.focus();
@@ -214,8 +229,7 @@ export const UIModeView: React.FC<{}> = ({
     if (!testModel)
       return;
 
-    const { config, rootSuite } = testModel;
-    const selectedProjects = config.configFile ? settings.getObject<string[] | undefined>(config.configFile + ':projects', undefined) : undefined;
+    const { rootSuite } = testModel;
     const newFilter = new Map(projectFilters);
     for (const projectName of newFilter.keys()) {
       if (!rootSuite.suites.find(s => s.title === projectName))
@@ -223,13 +237,13 @@ export const UIModeView: React.FC<{}> = ({
     }
     for (const projectSuite of rootSuite.suites) {
       if (!newFilter.has(projectSuite.title))
-        newFilter.set(projectSuite.title, !!selectedProjects?.includes(projectSuite.title));
+        newFilter.set(projectSuite.title, !!configProjects?.includes(projectSuite.title));
     }
-    if (!selectedProjects && newFilter.size && ![...newFilter.values()].includes(true))
+    if (!configProjects && newFilter.size && ![...newFilter.values()].includes(true))
       newFilter.set(newFilter.entries().next().value![0], true);
     if (projectFilters.size !== newFilter.size || [...projectFilters].some(([k, v]) => newFilter.get(k) !== v))
       setProjectFilters(newFilter);
-  }, [projectFilters, testModel]);
+  }, [projectFilters, configProjects, testModel]);
 
   // Update progress.
   React.useEffect(() => {
@@ -239,6 +253,21 @@ export const UIModeView: React.FC<{}> = ({
       setProgress(undefined);
   }, [testModel, isRunningTest]);
 
+  React.useEffect(() => {
+    if (!testModel)
+      return;
+
+    if (testModel.rootSuite.suites.length === 0) {
+      let prefix: string;
+      if (!configProjects || configProjects.length < 1)
+        prefix = 'No projects matched.';
+      else
+        prefix = `No projects matched. Available projects: ${configProjects.map(p => `"${p}"`).join(', ')}.`;
+
+      setCriticalError(`${prefix} Please check your configuration.`);
+    }
+  }, [testModel, configProjects]);
+
   // Test tree is built from the model and filters.
   const { testTree } = React.useMemo(() => {
     if (!testModel)
@@ -398,6 +427,7 @@ export const UIModeView: React.FC<{}> = ({
   }, [closeInstallDialog, testServerConnection]);
 
   return <div className='vbox ui-mode'>
+    {critcalError && <FullscreenModal>{critcalError}</FullscreenModal>}
     {!hasBrowsers && <dialog ref={dialogRef}>
       <div className='title'><span className='codicon codicon-lightbulb'></span>Install browsers</div>
       <div className='body'>