From 8c494e25191a2da940afe1dabde920a78b94cbb4 Mon Sep 17 00:00:00 2001
From: Pavel Feldman <pavel.feldman@gmail.com>
Date: Fri, 1 Sep 2023 20:12:05 -0700
Subject: [PATCH] chore: add log/error tabs and counters (#26843)

---
 .../trace-viewer/src/ui/attachmentsTab.tsx    |  6 +-
 packages/trace-viewer/src/ui/callTab.tsx      | 16 +----
 packages/trace-viewer/src/ui/consoleTab.tsx   | 27 +++++---
 packages/trace-viewer/src/ui/errorsTab.tsx    | 61 +++++++++++++++++++
 packages/trace-viewer/src/ui/logTab.tsx       | 34 +++++++++++
 packages/trace-viewer/src/ui/networkTab.tsx   | 40 +++++++-----
 .../trace-viewer/src/ui/placeholderPanel.tsx  | 30 +++++++++
 packages/trace-viewer/src/ui/workbench.tsx    | 51 +++++++++++-----
 packages/web/src/common.css                   |  8 +++
 packages/web/src/components/errorMessage.css  |  2 +-
 packages/web/src/components/tabbedPane.css    | 22 ++++++-
 packages/web/src/components/tabbedPane.tsx    | 15 ++++-
 tests/config/traceViewerFixtures.ts           |  2 +
 tests/library/trace-viewer.spec.ts            |  3 +-
 14 files changed, 259 insertions(+), 58 deletions(-)
 create mode 100644 packages/trace-viewer/src/ui/errorsTab.tsx
 create mode 100644 packages/trace-viewer/src/ui/logTab.tsx
 create mode 100644 packages/trace-viewer/src/ui/placeholderPanel.tsx

diff --git a/packages/trace-viewer/src/ui/attachmentsTab.tsx b/packages/trace-viewer/src/ui/attachmentsTab.tsx
index d10a9ee9c6..3ed7e26b90 100644
--- a/packages/trace-viewer/src/ui/attachmentsTab.tsx
+++ b/packages/trace-viewer/src/ui/attachmentsTab.tsx
@@ -19,12 +19,14 @@ import './attachmentsTab.css';
 import { ImageDiffView } from '@web/components/imageDiffView';
 import type { TestAttachment } from '@web/components/imageDiffView';
 import type { ActionTraceEventInContext, MultiTraceModel } from './modelUtil';
+import { PlaceholderPanel } from './placeholderPanel';
 
 export const AttachmentsTab: React.FunctionComponent<{
   model: MultiTraceModel | undefined,
 }> = ({ model }) => {
-  if (!model)
-    return null;
+  const attachments = model?.actions.map(a => a.attachments || []).flat() || [];
+  if (!model || !attachments.length)
+    return <PlaceholderPanel text='No attachments' />;
   return <div className='attachments-tab'>
     { model.actions.map((action, index) => <AttachmentsSection key={index} action={action} />) }
   </div>;
diff --git a/packages/trace-viewer/src/ui/callTab.tsx b/packages/trace-viewer/src/ui/callTab.tsx
index e589709882..bb4cd2a0b4 100644
--- a/packages/trace-viewer/src/ui/callTab.tsx
+++ b/packages/trace-viewer/src/ui/callTab.tsx
@@ -22,16 +22,14 @@ import './callTab.css';
 import { CopyToClipboard } from './copyToClipboard';
 import { asLocator } from '@isomorphic/locatorGenerators';
 import type { Language } from '@isomorphic/locatorGenerators';
-import { ErrorMessage } from '@web/components/errorMessage';
+import { PlaceholderPanel } from './placeholderPanel';
 
 export const CallTab: React.FunctionComponent<{
   action: ActionTraceEvent | undefined,
   sdkLanguage: Language | undefined,
 }> = ({ action, sdkLanguage }) => {
   if (!action)
-    return null;
-  const logs = action.log;
-  const error = action.error?.message;
+    return <PlaceholderPanel text='No action selected' />;
   const params = { ...action.params };
   // Strip down the waitForEventInfo data, we never need it.
   delete params.info;
@@ -40,8 +38,6 @@ export const CallTab: React.FunctionComponent<{
   const duration = action.endTime ? msToString(action.endTime - action.startTime) : 'Timed Out';
 
   return <div className='call-tab'>
-    {!!error && <ErrorMessage error={error} />}
-    {!!error && <div className='call-section'>Call</div>}
     <div className='call-line'>{action.apiName}</div>
     {<>
       <div className='call-section'>Time</div>
@@ -58,14 +54,6 @@ export const CallTab: React.FunctionComponent<{
         renderProperty(propertyToString(action, name, action.result[name], sdkLanguage), 'result-' + index)
       )
     }
-    <div className='call-section'>Log</div>
-    {
-      logs.map((logLine, index) => {
-        return <div key={index} className='call-line'>
-          {logLine}
-        </div>;
-      })
-    }
   </div>;
 };
 
diff --git a/packages/trace-viewer/src/ui/consoleTab.tsx b/packages/trace-viewer/src/ui/consoleTab.tsx
index 7ec3238197..4541903542 100644
--- a/packages/trace-viewer/src/ui/consoleTab.tsx
+++ b/packages/trace-viewer/src/ui/consoleTab.tsx
@@ -23,8 +23,9 @@ import type { Boundaries } from '../geometry';
 import { msToString } from '@web/uiUtils';
 import { ansi2html } from '@web/ansi2html';
 import type * as trace from '@trace/trace';
+import { PlaceholderPanel } from './placeholderPanel';
 
-type ConsoleEntry = {
+export type ConsoleEntry = {
   browserMessage?: trace.ConsoleMessageTraceEvent['initializer'],
   browserError?: channels.SerializedError;
   nodeMessage?: {
@@ -36,13 +37,14 @@ type ConsoleEntry = {
   timestamp: number;
 };
 
+type ConsoleTabModel = {
+  entries: ConsoleEntry[],
+};
+
 const ConsoleListView = ListView<ConsoleEntry>;
 
-export const ConsoleTab: React.FunctionComponent<{
-  model: modelUtil.MultiTraceModel | undefined,
-  boundaries: Boundaries,
-  selectedTime: Boundaries | undefined,
-}> = ({ model, boundaries, selectedTime }) => {
+
+export function useConsoleTabModel(model: modelUtil.MultiTraceModel | undefined, selectedTime: Boundaries | undefined): ConsoleTabModel {
   const { entries } = React.useMemo(() => {
     if (!model)
       return { entries: [] };
@@ -89,9 +91,20 @@ export const ConsoleTab: React.FunctionComponent<{
     return entries.filter(entry => entry.timestamp >= selectedTime.minimum && entry.timestamp <= selectedTime.maximum);
   }, [entries, selectedTime]);
 
+  return { entries: filteredEntries };
+}
+
+export const ConsoleTab: React.FunctionComponent<{
+  boundaries: Boundaries,
+  consoleModel: ConsoleTabModel,
+  selectedTime: Boundaries | undefined,
+}> = ({ consoleModel, boundaries }) => {
+  if (!consoleModel.entries.length)
+    return <PlaceholderPanel text='No console entries' />;
+
   return <div className='console-tab'>
     <ConsoleListView
-      items={filteredEntries}
+      items={consoleModel.entries}
       isError={entry => entry.isError}
       isWarning={entry => entry.isWarning}
       render={entry => {
diff --git a/packages/trace-viewer/src/ui/errorsTab.tsx b/packages/trace-viewer/src/ui/errorsTab.tsx
new file mode 100644
index 0000000000..8025f4920c
--- /dev/null
+++ b/packages/trace-viewer/src/ui/errorsTab.tsx
@@ -0,0 +1,61 @@
+/**
+ * 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 { ErrorMessage } from '@web/components/errorMessage';
+import * as React from 'react';
+import type * as modelUtil from './modelUtil';
+import { PlaceholderPanel } from './placeholderPanel';
+import { renderAction } from './actionList';
+import type { Language } from '@isomorphic/locatorGenerators';
+import type { Boundaries } from '../geometry';
+import { msToString } from '@web/uiUtils';
+
+type ErrorsTabModel = {
+  errors: Map<string, modelUtil.ActionTraceEventInContext>;
+};
+
+export function useErrorsTabModel(model: modelUtil.MultiTraceModel | undefined): ErrorsTabModel {
+  return React.useMemo(() => {
+    const errors = new Map<string, modelUtil.ActionTraceEventInContext>();
+    for (const action of model?.actions || []) {
+      // Overwrite errors with the last one.
+      if (action.error?.message)
+        errors.set(action.error.message, action);
+    }
+    return { errors };
+  }, [model]);
+}
+
+export const ErrorsTab: React.FunctionComponent<{
+  errorsModel: ErrorsTabModel,
+  sdkLanguage: Language,
+  boundaries: Boundaries,
+}> = ({ errorsModel, sdkLanguage, boundaries }) => {
+  if (!errorsModel.errors.size)
+    return <PlaceholderPanel text='No errors' />;
+
+  return <div className='fill' style={{ overflow: 'auto ' }}>
+    {[...errorsModel.errors.entries()].map(([message, action]) => {
+      return <div key={message}>
+        <div className='hbox' style={{ alignItems: 'center', padding: 5 }}>
+          <div style={{ color: 'var(--vscode-editorCodeLens-foreground)', marginRight: 5 }}>{msToString(action.startTime - boundaries.minimum)}</div>
+          {renderAction(action, sdkLanguage)}
+        </div>
+        <ErrorMessage error={message} />
+      </div>;
+    })}
+  </div>;
+};
diff --git a/packages/trace-viewer/src/ui/logTab.tsx b/packages/trace-viewer/src/ui/logTab.tsx
new file mode 100644
index 0000000000..5f5c12bff7
--- /dev/null
+++ b/packages/trace-viewer/src/ui/logTab.tsx
@@ -0,0 +1,34 @@
+/**
+ * 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 type { ActionTraceEvent } from '@trace/trace';
+import * as React from 'react';
+import { ListView } from '@web/components/listView';
+import { PlaceholderPanel } from './placeholderPanel';
+
+const LogList = ListView<string>;
+
+export const LogTab: React.FunctionComponent<{
+  action: ActionTraceEvent | undefined,
+}> = ({ action }) => {
+  if (!action?.log.length)
+    return <PlaceholderPanel text='No log entries' />;
+  return <LogList
+    dataTestId='log-list'
+    items={action?.log || []}
+    render={logLine => logLine}
+  />;
+};
diff --git a/packages/trace-viewer/src/ui/networkTab.tsx b/packages/trace-viewer/src/ui/networkTab.tsx
index 0d714d3495..8d0ccb8749 100644
--- a/packages/trace-viewer/src/ui/networkTab.tsx
+++ b/packages/trace-viewer/src/ui/networkTab.tsx
@@ -18,25 +18,21 @@ import type { Entry } from '@trace/har';
 import { ListView } from '@web/components/listView';
 import * as React from 'react';
 import type { Boundaries } from '../geometry';
-import type * as modelUtil from './modelUtil';
 import './networkTab.css';
 import { NetworkResourceDetails } from './networkResourceDetails';
 import { bytesToString, msToString } from '@web/uiUtils';
+import { PlaceholderPanel } from './placeholderPanel';
+import type { MultiTraceModel } from './modelUtil';
 
 const NetworkListView = ListView<Entry>;
 
 type SortBy = 'start' | 'status' | 'method' | 'file' | 'duration' | 'size' | 'content-type';
 type Sorting = { by: SortBy, negate: boolean};
+type NetworkTabModel = {
+  resources: Entry[],
+};
 
-export const NetworkTab: React.FunctionComponent<{
-  model: modelUtil.MultiTraceModel | undefined,
-  boundaries: Boundaries,
-  selectedTime: Boundaries | undefined,
-  onEntryHovered: (entry: Entry | undefined) => void,
-}> = ({ model, boundaries, selectedTime, onEntryHovered }) => {
-  const [resource, setResource] = React.useState<Entry | undefined>();
-  const [sorting, setSorting] = React.useState<Sorting | undefined>(undefined);
-
+export function useNetworkTabModel(model: MultiTraceModel | undefined, selectedTime: Boundaries | undefined): NetworkTabModel {
   const resources = React.useMemo(() => {
     const resources = model?.resources || [];
     const filtered = resources.filter(resource => {
@@ -44,21 +40,37 @@ export const NetworkTab: React.FunctionComponent<{
         return true;
       return !!resource._monotonicTime && (resource._monotonicTime >= selectedTime.minimum && resource._monotonicTime <= selectedTime.maximum);
     });
-    if (sorting)
-      sort(filtered, sorting);
     return filtered;
-  }, [sorting, model, selectedTime]);
+  }, [model, selectedTime]);
+  return { resources };
+}
+
+export const NetworkTab: React.FunctionComponent<{
+  boundaries: Boundaries,
+  networkModel: NetworkTabModel,
+  onEntryHovered: (entry: Entry | undefined) => void,
+}> = ({ boundaries, networkModel, onEntryHovered }) => {
+  const [resource, setResource] = React.useState<Entry | undefined>();
+  const [sorting, setSorting] = React.useState<Sorting | undefined>(undefined);
+
+  React.useMemo(() => {
+    if (sorting)
+      sort(networkModel.resources, sorting);
+  }, [networkModel.resources, sorting]);
 
   const toggleSorting = React.useCallback((f: SortBy) => {
     setSorting({ by: f, negate: sorting?.by === f ? !sorting.negate : false });
   }, [sorting]);
 
+  if (!networkModel.resources.length)
+    return <PlaceholderPanel text='No network calls' />;
+
   return <>
     {!resource && <div className='vbox'>
       <NetworkHeader sorting={sorting} toggleSorting={toggleSorting} />
       <NetworkListView
         dataTestId='network-request-list'
-        items={resources}
+        items={networkModel.resources}
         render={entry => <NetworkResource boundaries={boundaries} resource={entry}></NetworkResource>}
         onSelected={setResource}
         onHighlighted={onEntryHovered}
diff --git a/packages/trace-viewer/src/ui/placeholderPanel.tsx b/packages/trace-viewer/src/ui/placeholderPanel.tsx
new file mode 100644
index 0000000000..2a74004893
--- /dev/null
+++ b/packages/trace-viewer/src/ui/placeholderPanel.tsx
@@ -0,0 +1,30 @@
+/**
+ * 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';
+
+export const PlaceholderPanel: React.FunctionComponent<{
+  text: string,
+}> = ({ text }) => {
+  return <div className='fill' style={{
+    display: 'flex',
+    alignItems: 'center',
+    justifyContent: 'center',
+    fontSize: 24,
+    fontWeight: 'bold',
+    opacity: 0.5,
+  }}>{text}</div>;
+};
diff --git a/packages/trace-viewer/src/ui/workbench.tsx b/packages/trace-viewer/src/ui/workbench.tsx
index bc21f2e3b6..85ea275ecd 100644
--- a/packages/trace-viewer/src/ui/workbench.tsx
+++ b/packages/trace-viewer/src/ui/workbench.tsx
@@ -18,10 +18,12 @@ import { SplitView } from '@web/components/splitView';
 import * as React from 'react';
 import { ActionList } from './actionList';
 import { CallTab } from './callTab';
-import { ConsoleTab } from './consoleTab';
+import { LogTab } from './logTab';
+import { ErrorsTab, useErrorsTabModel } from './errorsTab';
+import { ConsoleTab, useConsoleTabModel } from './consoleTab';
 import type * as modelUtil from './modelUtil';
 import type { ActionTraceEventInContext, MultiTraceModel } from './modelUtil';
-import { NetworkTab } from './networkTab';
+import { NetworkTab, useNetworkTabModel } from './networkTab';
 import { SnapshotTab } from './snapshotTab';
 import { SourceTab } from './sourceTab';
 import { TabbedPane } from '@web/components/tabbedPane';
@@ -49,7 +51,7 @@ export const Workbench: React.FunctionComponent<{
   const [highlightedAction, setHighlightedAction] = React.useState<ActionTraceEventInContext | undefined>();
   const [highlightedEntry, setHighlightedEntry] = React.useState<Entry | undefined>();
   const [selectedNavigatorTab, setSelectedNavigatorTab] = React.useState<string>('actions');
-  const [selectedPropertiesTab, setSelectedPropertiesTab] = React.useState<string>(showSourcesFirst ? 'source' : 'call');
+  const [selectedPropertiesTab, setSelectedPropertiesTab] = useSetting<string>('propertiesTab', showSourcesFirst ? 'source' : 'call');
   const [isInspecting, setIsInspecting] = React.useState(false);
   const [highlightedLocator, setHighlightedLocator] = React.useState<string>('');
   const activeAction = model ? highlightedAction || selectedAction : undefined;
@@ -83,13 +85,20 @@ export const Workbench: React.FunctionComponent<{
     setSelectedPropertiesTab(tab);
     if (tab !== 'inspector')
       setIsInspecting(false);
-  }, []);
+  }, [setSelectedPropertiesTab]);
 
   const locatorPicked = React.useCallback((locator: string) => {
     setHighlightedLocator(locator);
     selectPropertiesTab('inspector');
   }, [selectPropertiesTab]);
 
+  const consoleModel = useConsoleTabModel(model, selectedTime);
+  const networkModel = useNetworkTabModel(model, selectedTime);
+  const errorsModel = useErrorsTabModel(model);
+  const attachments = React.useMemo(() => {
+    return model?.actions.map(a => a.attachments || []).flat() || [];
+  }, [model]);
+
   const sdkLanguage = model?.sdkLanguage || 'javascript';
 
   const inspectorTab: TabbedPaneTabModel = {
@@ -106,6 +115,17 @@ export const Workbench: React.FunctionComponent<{
     title: 'Call',
     render: () => <CallTab action={activeAction} sdkLanguage={sdkLanguage} />
   };
+  const logTab: TabbedPaneTabModel = {
+    id: 'log',
+    title: 'Log',
+    render: () => <LogTab action={activeAction} />
+  };
+  const errorsTab: TabbedPaneTabModel = {
+    id: 'errors',
+    title: 'Errors',
+    errorCount: errorsModel.errors.size,
+    render: () => <ErrorsTab errorsModel={errorsModel} sdkLanguage={sdkLanguage} boundaries={boundaries} />
+  };
   const sourceTab: TabbedPaneTabModel = {
     id: 'source',
     title: 'Source',
@@ -119,34 +139,37 @@ export const Workbench: React.FunctionComponent<{
   const consoleTab: TabbedPaneTabModel = {
     id: 'console',
     title: 'Console',
-    render: () => <ConsoleTab model={model} boundaries={boundaries} selectedTime={selectedTime} />
+    count: consoleModel.entries.length,
+    render: () => <ConsoleTab consoleModel={consoleModel} boundaries={boundaries} selectedTime={selectedTime} />
   };
   const networkTab: TabbedPaneTabModel = {
     id: 'network',
     title: 'Network',
-    render: () => <NetworkTab model={model} boundaries={boundaries} selectedTime={selectedTime} onEntryHovered={setHighlightedEntry}/>
+    count: networkModel.resources.length,
+    render: () => <NetworkTab boundaries={boundaries} networkModel={networkModel} onEntryHovered={setHighlightedEntry}/>
   };
   const attachmentsTab: TabbedPaneTabModel = {
     id: 'attachments',
     title: 'Attachments',
+    count: attachments.length,
     render: () => <AttachmentsTab model={model} />
   };
 
-  const tabs: TabbedPaneTabModel[] = showSourcesFirst ? [
-    inspectorTab,
-    sourceTab,
-    consoleTab,
-    networkTab,
-    callTab,
-    attachmentsTab,
-  ] : [
+  const tabs: TabbedPaneTabModel[] = [
     inspectorTab,
     callTab,
+    logTab,
+    errorsTab,
     consoleTab,
     networkTab,
     sourceTab,
     attachmentsTab,
   ];
+  if (showSourcesFirst) {
+    const sourceTabIndex = tabs.indexOf(sourceTab);
+    tabs.splice(sourceTabIndex, 1);
+    tabs.splice(1, 0, sourceTab);
+  }
 
   const { boundaries } = React.useMemo(() => {
     const boundaries = { minimum: model?.startTime || 0, maximum: model?.endTime || 30000 };
diff --git a/packages/web/src/common.css b/packages/web/src/common.css
index 1e0140aa5c..10c2b8df77 100644
--- a/packages/web/src/common.css
+++ b/packages/web/src/common.css
@@ -81,6 +81,14 @@ svg {
   position: relative;
 }
 
+.fill {
+   position: absolute;
+   top: 0;
+   right: 0;
+   bottom: 0;
+   left: 0;
+}
+
 .hbox {
   display: flex;
   flex: auto;
diff --git a/packages/web/src/components/errorMessage.css b/packages/web/src/components/errorMessage.css
index d50af176a2..a482ee0f14 100644
--- a/packages/web/src/components/errorMessage.css
+++ b/packages/web/src/components/errorMessage.css
@@ -20,5 +20,5 @@
   font-size: var(--vscode-editor-font-size);
   background-color: var(--vscode-inputValidation-errorBackground);
   white-space: pre;
-  overflow: auto;
+  padding: 10px;
 }
diff --git a/packages/web/src/components/tabbedPane.css b/packages/web/src/components/tabbedPane.css
index d1989c5ecb..3a8a694ef3 100644
--- a/packages/web/src/components/tabbedPane.css
+++ b/packages/web/src/components/tabbedPane.css
@@ -28,13 +28,13 @@
   display: flex;
   flex: auto;
   overflow: hidden;
+  position: relative;
 }
 
 .tabbed-pane-tab {
-  padding: 2px 10px 0 10px;
+  padding: 2px 6px 0 6px;
   cursor: pointer;
   display: flex;
-  flex: none;
   align-items: center;
   justify-content: center;
   user-select: none;
@@ -54,3 +54,21 @@
 .tabbed-pane-tab.selected {
   background-color: var(--vscode-tab-activeBackground);
 }
+
+.tabbed-pane-tab-counter {
+  padding: 0 4px;
+  background: var(--vscode-menu-separatorBackground);
+  border-radius: 8px;
+  height: 16px;
+  margin-left: 4px;
+  line-height: 16px;
+  min-width: 18px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
+
+.tabbed-pane-tab-counter.error {
+  background: var(--vscode-list-errorForeground);
+  color: var(--vscode-button-foreground);
+}
diff --git a/packages/web/src/components/tabbedPane.tsx b/packages/web/src/components/tabbedPane.tsx
index 4d4386844a..764ff2bcf1 100644
--- a/packages/web/src/components/tabbedPane.tsx
+++ b/packages/web/src/components/tabbedPane.tsx
@@ -20,7 +20,9 @@ import * as React from 'react';
 
 export interface TabbedPaneTabModel {
   id: string;
-  title: string | JSX.Element;
+  title: string;
+  count?: number;
+  errorCount?: number;
   component?: React.ReactElement;
   render?: () => React.ReactElement;
 }
@@ -44,6 +46,8 @@ export const TabbedPane: React.FunctionComponent<{
             <TabbedPaneTab
               id={tab.id}
               title={tab.title}
+              count={tab.count}
+              errorCount={tab.errorCount}
               selected={selectedTab === tab.id}
               onSelect={setSelectedTab}
             ></TabbedPaneTab>)),
@@ -67,13 +71,18 @@ export const TabbedPane: React.FunctionComponent<{
 
 export const TabbedPaneTab: React.FunctionComponent<{
   id: string,
-  title: string | JSX.Element,
+  title: string,
+  count?: number,
+  errorCount?: number,
   selected?: boolean,
   onSelect: (id: string) => void
-}> = ({ id, title, selected, onSelect }) => {
+}> = ({ id, title, count, errorCount, selected, onSelect }) => {
   return <div className={'tabbed-pane-tab ' + (selected ? 'selected' : '')}
     onClick={() => onSelect(id)}
+    title={title}
     key={id}>
     <div className='tabbed-pane-tab-label'>{title}</div>
+    {!!count && <div className='tabbed-pane-tab-counter'>{count}</div>}
+    {!!errorCount && <div className='tabbed-pane-tab-counter error'>{errorCount}</div>}
   </div>;
 };
diff --git a/tests/config/traceViewerFixtures.ts b/tests/config/traceViewerFixtures.ts
index 60797ab941..42ab162ba4 100644
--- a/tests/config/traceViewerFixtures.ts
+++ b/tests/config/traceViewerFixtures.ts
@@ -38,6 +38,7 @@ class TraceViewerPage {
   actionTitles: Locator;
   callLines: Locator;
   consoleLines: Locator;
+  logLines: Locator;
   consoleLineMessages: Locator;
   consoleStacks: Locator;
   stackFrames: Locator;
@@ -47,6 +48,7 @@ class TraceViewerPage {
   constructor(public page: Page) {
     this.actionTitles = page.locator('.action-title');
     this.callLines = page.locator('.call-tab .call-line');
+    this.logLines = page.getByTestId('log-list').locator('.list-view-entry');
     this.consoleLines = page.locator('.console-line');
     this.consoleLineMessages = page.locator('.console-line-message');
     this.consoleStacks = page.locator('.console-stack');
diff --git a/tests/library/trace-viewer.spec.ts b/tests/library/trace-viewer.spec.ts
index 3614505a74..6bc3e42956 100644
--- a/tests/library/trace-viewer.spec.ts
+++ b/tests/library/trace-viewer.spec.ts
@@ -122,7 +122,8 @@ test('should open simple trace viewer', async ({ showTraceViewer }) => {
 test('should contain action info', async ({ showTraceViewer }) => {
   const traceViewer = await showTraceViewer([traceFile]);
   await traceViewer.selectAction('locator.click');
-  const logLines = await traceViewer.callLines.allTextContents();
+  await traceViewer.page.getByText('Log', { exact: true }).click();
+  const logLines = await traceViewer.logLines.allTextContents();
   expect(logLines.length).toBeGreaterThan(10);
   expect(logLines).toContain('attempting click action');
   expect(logLines).toContain('  click action done');