diff --git a/src/components/logger.ts b/src/components/logger.ts
index 19693d5f6..cfc8aab68 100644
--- a/src/components/logger.ts
+++ b/src/components/logger.ts
@@ -6,6 +6,17 @@ const STATUS_ITEM = vscode.window.createStatusBarItem(vscode.StatusBarAlignment.
 const PLACEHOLDERS: {[placeholder: string]: string} = {}
 
 COMPILER_PANEL.append('Ready')
+let CACHED_EXTLOG: string[] = []
+let CACHED_COMPILER: string[] = []
+
+export function resetCachedLog() {
+    CACHED_EXTLOG = []
+    CACHED_COMPILER = []
+}
+
+export function getCachedLog() {
+    return {CACHED_EXTLOG, CACHED_COMPILER}
+}
 
 export function getLogger(...tags: string[]) {
     const tagString = tags.map(tag => `[${tag}]`).join('')
@@ -44,9 +55,13 @@ function logTagless(message: string) {
         }
         const placeholder = `%WS${Object.keys(PLACEHOLDERS).length + 1}%`
         PLACEHOLDERS[folder.uri.fsPath] = placeholder
-        LOG_PANEL.appendLine(`[${timestamp}][Logger] New log placeholder ${placeholder} registered for ${folder.uri.fsPath} .`)
+        const log = `[${timestamp}][Logger] New log placeholder ${placeholder} registered for ${folder.uri.fsPath} .`
+        LOG_PANEL.appendLine(log)
+        CACHED_EXTLOG.push(log)
     })
-    LOG_PANEL.appendLine(`[${timestamp}]${applyPlaceholders(message)}`)
+    const log = `[${timestamp}]${applyPlaceholders(message)}`
+    LOG_PANEL.appendLine(log)
+    CACHED_EXTLOG.push(log)
 }
 
 function applyPlaceholders(message: string) {
@@ -77,6 +92,7 @@ function logErrorTagless(message: string, error: unknown, stderr?: string) {
 
 function logCompiler(message: string) {
     COMPILER_PANEL.append(message)
+    CACHED_COMPILER.push(message)
 }
 
 function initializeStatusBarItem() {
diff --git a/test/suites/01_build.test.ts b/test/suites/01_build.test.ts
index 9e9b966c8..e7e6f0fe2 100644
--- a/test/suites/01_build.test.ts
+++ b/test/suites/01_build.test.ts
@@ -4,6 +4,7 @@ import rimraf from 'rimraf'
 import * as lw from '../../src/lw'
 import * as test from './utils'
 import { BuildDone } from '../../src/components/eventbus'
+import { resetCachedLog } from '../../src/components/logger'
 
 suite('Build TeX files test suite', () => {
 
@@ -17,6 +18,7 @@ suite('Build TeX files test suite', () => {
 
     setup(async () => {
         await vscode.commands.executeCommand('latex-workshop.activate')
+        resetCachedLog()
     })
 
     teardown(async () => {
@@ -130,7 +132,7 @@ suite('Build TeX files test suite', () => {
         await test.assert.build(fixture, 'main.tex', 'main.pdf')
     })
 
-    test.run(suiteName, fixtureName, 'build a subfile when main.tex opened', async () => {
+    test.only(suiteName, fixtureName, 'build a subfile when main.tex opened', async () => {
         await vscode.workspace.getConfiguration('latex-workshop').update('latex.rootFile.doNotPrompt', true)
         await vscode.workspace.getConfiguration('latex-workshop').update('latex.rootFile.useSubFile', true)
         await test.load(fixture, [
diff --git a/test/suites/02_autobuild.test.ts b/test/suites/02_autobuild.test.ts
index 6f9c11080..d18db3dfa 100644
--- a/test/suites/02_autobuild.test.ts
+++ b/test/suites/02_autobuild.test.ts
@@ -4,6 +4,7 @@ import rimraf from 'rimraf'
 import * as lw from '../../src/lw'
 import * as test from './utils'
 import { FileWatched } from '../../src/components/eventbus'
+import { resetCachedLog } from '../../src/components/logger'
 
 suite('Auto-build test suite', () => {
 
@@ -19,6 +20,7 @@ suite('Auto-build test suite', () => {
         await vscode.commands.executeCommand('latex-workshop.activate')
         await vscode.workspace.getConfiguration('latex-workshop').update('latex.autoBuild.interval', 250)
         await vscode.workspace.getConfiguration('latex-workshop').update('latex.autoBuild.run', 'onFileChange')
+        resetCachedLog()
     })
 
     teardown(async () => {
diff --git a/test/suites/03_findroot.test.ts b/test/suites/03_findroot.test.ts
index c135d75b4..b6805b967 100644
--- a/test/suites/03_findroot.test.ts
+++ b/test/suites/03_findroot.test.ts
@@ -4,6 +4,7 @@ import rimraf from 'rimraf'
 import * as assert from 'assert'
 import * as lw from '../../src/lw'
 import * as test from './utils'
+import { resetCachedLog } from '../../src/components/logger'
 
 suite('Find root file test suite', () => {
 
@@ -17,6 +18,7 @@ suite('Find root file test suite', () => {
 
     setup(async () => {
         await vscode.commands.executeCommand('latex-workshop.activate')
+        resetCachedLog()
     })
 
     teardown(async () => {
diff --git a/test/suites/04_intellisense.test.ts b/test/suites/04_intellisense.test.ts
index 9dbda5a04..56fe37d9d 100644
--- a/test/suites/04_intellisense.test.ts
+++ b/test/suites/04_intellisense.test.ts
@@ -11,6 +11,7 @@ import { CmdType } from '../../src/providers/completer/command'
 import { PkgType } from '../../src/providers/completion'
 import { isTriggerSuggestNeeded } from '../../src/providers/completer/commandlib/commandfinder'
 import { FileParsed } from '../../src/components/eventbus'
+import { resetCachedLog } from '../../src/components/logger'
 
 function assertKeys(keys: string[], expected: string[] = [], message: string): void {
     assert.ok(
@@ -31,6 +32,7 @@ suite('Intellisense test suite', () => {
 
     setup(async () => {
         await vscode.commands.executeCommand('latex-workshop.activate')
+        resetCachedLog()
     })
 
     teardown(async () => {
diff --git a/test/suites/05_viewer.test.ts b/test/suites/05_viewer.test.ts
index d381dcabb..4a4e8290f 100644
--- a/test/suites/05_viewer.test.ts
+++ b/test/suites/05_viewer.test.ts
@@ -4,6 +4,7 @@ import rimraf from 'rimraf'
 import * as lw from '../../src/lw'
 import * as test from './utils'
 import { BuildDone } from '../../src/components/eventbus'
+import { resetCachedLog } from '../../src/components/logger'
 
 suite('PDF viewer test suite', () => {
 
@@ -18,6 +19,7 @@ suite('PDF viewer test suite', () => {
     setup(async () => {
         await vscode.commands.executeCommand('latex-workshop.activate')
         await vscode.workspace.getConfiguration().update('latex-workshop.view.pdf.viewer', 'tab')
+        resetCachedLog()
     })
 
     teardown(async () => {
diff --git a/test/suites/06_structure.test.ts b/test/suites/06_structure.test.ts
index bd6db4fce..18662c32b 100644
--- a/test/suites/06_structure.test.ts
+++ b/test/suites/06_structure.test.ts
@@ -5,6 +5,7 @@ import rimraf from 'rimraf'
 import * as lw from '../../src/lw'
 import * as test from './utils'
 import { SectionNodeProvider } from '../../src/providers/structure'
+import { resetCachedLog } from '../../src/components/logger'
 
 async function loadTestFiles(fixture: string) {
     await test.load(fixture, [
@@ -27,6 +28,7 @@ suite('Document structure test suite', () => {
 
     setup(async () => {
         await vscode.commands.executeCommand('latex-workshop.activate')
+        resetCachedLog()
     })
 
     teardown(async () => {
diff --git a/test/suites/07_mathpreview.test.ts b/test/suites/07_mathpreview.test.ts
index 8c623f798..eca942c1a 100644
--- a/test/suites/07_mathpreview.test.ts
+++ b/test/suites/07_mathpreview.test.ts
@@ -7,6 +7,7 @@ import * as test from './utils'
 import { TextDocumentLike } from '../../src/providers/preview/mathpreviewlib/textdocumentlike'
 import { TeXMathEnvFinder } from '../../src/providers/preview/mathpreviewlib/texmathenvfinder'
 import { CursorRenderer } from '../../src/providers/preview/mathpreviewlib/cursorrenderer'
+import { resetCachedLog } from '../../src/components/logger'
 
 suite('Math preview test suite', () => {
 
@@ -20,6 +21,7 @@ suite('Math preview test suite', () => {
 
     setup(async () => {
         await vscode.commands.executeCommand('latex-workshop.activate')
+        resetCachedLog()
     })
 
     teardown(async () => {
diff --git a/test/suites/08_linter.test.ts b/test/suites/08_linter.test.ts
index e8f53b574..44aaefc55 100644
--- a/test/suites/08_linter.test.ts
+++ b/test/suites/08_linter.test.ts
@@ -6,6 +6,7 @@ import * as lw from '../../src/lw'
 import * as test from './utils'
 import { ChkTeX } from '../../src/components/linterlib/chktex'
 import { LaCheck } from '../../src/components/linterlib/lacheck'
+import { resetCachedLog } from '../../src/components/logger'
 
 suite('Linter test suite', () => {
 
@@ -19,6 +20,7 @@ suite('Linter test suite', () => {
 
     setup(async () => {
         await vscode.commands.executeCommand('latex-workshop.activate')
+        resetCachedLog()
     })
 
     teardown(async () => {
diff --git a/test/suites/09_formatter.test.ts b/test/suites/09_formatter.test.ts
index b84731c50..ca8058796 100644
--- a/test/suites/09_formatter.test.ts
+++ b/test/suites/09_formatter.test.ts
@@ -4,6 +4,7 @@ import * as assert from 'assert'
 import rimraf from 'rimraf'
 import * as lw from '../../src/lw'
 import * as test from './utils'
+import { resetCachedLog } from '../../src/components/logger'
 
 suite('Formatter test suite', () => {
 
@@ -17,6 +18,7 @@ suite('Formatter test suite', () => {
 
     setup(async () => {
         await vscode.commands.executeCommand('latex-workshop.activate')
+        resetCachedLog()
     })
 
     teardown(async () => {
diff --git a/test/suites/99_multiroot.test.ts b/test/suites/99_multiroot.test.ts
index b11f5115e..b9291efb4 100644
--- a/test/suites/99_multiroot.test.ts
+++ b/test/suites/99_multiroot.test.ts
@@ -4,6 +4,7 @@ import rimraf from 'rimraf'
 import * as assert from 'assert'
 import * as lw from '../../src/lw'
 import * as test from './utils'
+import { resetCachedLog } from '../../src/components/logger'
 
 suite('Multi-root workspace test suite', () => {
 
@@ -18,6 +19,7 @@ suite('Multi-root workspace test suite', () => {
     setup(async () => {
         await vscode.commands.executeCommand('latex-workshop.activate')
         await vscode.workspace.getConfiguration('latex-workshop').update('latex.autoBuild.interval', 250)
+        resetCachedLog()
     })
 
     teardown(async () => {
diff --git a/test/suites/utils.ts b/test/suites/utils.ts
index 19fbd0340..36f9c70d1 100644
--- a/test/suites/utils.ts
+++ b/test/suites/utils.ts
@@ -7,6 +7,7 @@ import { ok, strictEqual } from 'assert'
 import * as lw from '../../src/lw'
 import { BuildDone, FileParsed, FileWatched, RootFileSearched, ViewerPageLoaded, ViewerStatusChanged } from '../../src/components/eventbus'
 import type { EventName } from '../../src/components/eventbus'
+import { getCachedLog } from '../../src/components/logger'
 
 let testCounter = 0
 
@@ -43,7 +44,7 @@ export function run(suiteName: string, fixtureName: string, testName: string, cb
         try {
             await cb()
         } catch (error) {
-            await log(counterString)
+            log(fixtureName, testName, counterString)
             throw error
         }
     }).timeout(timeout || 15000)
@@ -53,22 +54,14 @@ export function sleep(ms: number) {
     return new Promise(resolve => setTimeout(resolve, ms))
 }
 
-async function log(counter: string) {
-    await vscode.commands.executeCommand('workbench.action.closeAllEditors')
-    await sleep(500)
-    await vscode.commands.executeCommand('workbench.action.output.toggleOutput')
-    await sleep(500)
-    await vscode.commands.executeCommand('latex-workshop.log')
-    await sleep(500)
-    const extensionMessage = vscode.window.activeTextEditor?.document.getText()
-    await vscode.commands.executeCommand('latex-workshop.compilerlog')
-    await sleep(500)
-    const compilerMessage = vscode.window.activeTextEditor?.document.getText()
-
+function log(fixtureName: string, testName: string, counter: string) {
+    const cachedLog = getCachedLog()
     const logFolder = path.resolve(__dirname, '../../../test/log')
     fs.mkdirSync(logFolder, {recursive: true})
-    fs.writeFileSync(path.resolve(logFolder, `${counter}.extension.log`), extensionMessage || '')
-    fs.writeFileSync(path.resolve(logFolder, `${counter}.compiler.log`), compilerMessage || '')
+    fs.writeFileSync(path.resolve(logFolder, `${fixtureName}-${counter}.log`),
+        testName + '\n\n' + new Array(80).fill('=') + '\n\n' +
+        cachedLog.CACHED_EXTLOG + '\n\n' + new Array(80).fill('=') + '\n\n' +
+        cachedLog.CACHED_COMPILER)
 }
 
 export function write(fixture: string, fileName: string, ...contents: string[]) {