diff --git a/test/message/assert_throws_stack.js b/test/fixtures/assert/assert_throws_stack.js
similarity index 82%
rename from test/message/assert_throws_stack.js
rename to test/fixtures/assert/assert_throws_stack.js
index 36bc5734cae37f..a1fca696c5ac10 100644
--- a/test/message/assert_throws_stack.js
+++ b/test/fixtures/assert/assert_throws_stack.js
@@ -1,6 +1,6 @@
 'use strict';
 
-require('../common');
+require('../../common');
 const assert = require('assert').strict;
 
 assert.throws(() => { throw new Error('foo'); }, { bar: true });
diff --git a/test/message/assert_throws_stack.out b/test/fixtures/assert/assert_throws_stack.snapshot
similarity index 60%
rename from test/message/assert_throws_stack.out
rename to test/fixtures/assert/assert_throws_stack.snapshot
index 06eaa906442440..ebd3517dd74a48 100644
--- a/test/message/assert_throws_stack.out
+++ b/test/fixtures/assert/assert_throws_stack.snapshot
@@ -1,4 +1,4 @@
-node:assert:*
+node:assert*
       throw err;
       ^
 
@@ -9,7 +9,7 @@ AssertionError [ERR_ASSERTION]: Expected values to be strictly deep-equal:
 - Comparison {
 -   bar: true
 - }
-    at Object.<anonymous> (*assert_throws_stack.js:*:*)
+    at *
     at *
     at *
     at *
@@ -19,16 +19,16 @@ AssertionError [ERR_ASSERTION]: Expected values to be strictly deep-equal:
   generatedMessage: true,
   code: 'ERR_ASSERTION',
   actual: Error: foo
-      at assert.throws.bar (*assert_throws_stack.js:*)
-      at getActual (node:assert:*)
-      at Function.throws (node:assert:*)
-      at Object.<anonymous> (*assert_throws_stack.js:*:*)
       at *
       at *
       at *
       at *
       at *
-      at *,
+      at *
+      at *
+      at *
+      at *
+      at node:internal*main*run_main_module**,
   expected: { bar: true },
   operator: 'throws'
 }
diff --git a/test/message/internal_assert.js b/test/fixtures/assert/internal_assert.js
similarity index 80%
rename from test/message/internal_assert.js
rename to test/fixtures/assert/internal_assert.js
index fdb459b67ca0fa..871504f0925a6f 100644
--- a/test/message/internal_assert.js
+++ b/test/fixtures/assert/internal_assert.js
@@ -1,7 +1,7 @@
 'use strict';
 
 // Flags: --expose-internals
-require('../common');
+require('../../common');
 
 const assert = require('internal/assert');
 assert(false);
diff --git a/test/message/internal_assert.out b/test/fixtures/assert/internal_assert.snapshot
similarity index 52%
rename from test/message/internal_assert.out
rename to test/fixtures/assert/internal_assert.snapshot
index bd25c879478083..3b60a41ffc4f0c 100644
--- a/test/message/internal_assert.out
+++ b/test/fixtures/assert/internal_assert.snapshot
@@ -1,13 +1,13 @@
-node:internal/assert:*
+node:internal*assert*
     throw new ERR_INTERNAL_ASSERTION(message);
     ^
 
 Error [ERR_INTERNAL_ASSERTION]: This is caused by either a bug in Node.js or incorrect usage of Node.js internals.
-Please open an issue with this stack trace at https://github.com/nodejs/node/issues
+Please open an issue with this stack trace at https:**github.com*nodejs*node*issues
 
-    at new NodeError (node:internal/errors:*:*)
-    at assert (node:internal/assert:*:*)
-    at * (*test*message*internal_assert.js:7:1)
+    at *
+    at *
+    at *
     at *
     at *
     at *
diff --git a/test/message/internal_assert_fail.js b/test/fixtures/assert/internal_assert_fail.js
similarity index 82%
rename from test/message/internal_assert_fail.js
rename to test/fixtures/assert/internal_assert_fail.js
index 1b2cf13552869b..503a1dcbc7264a 100644
--- a/test/message/internal_assert_fail.js
+++ b/test/fixtures/assert/internal_assert_fail.js
@@ -1,7 +1,7 @@
 'use strict';
 
 // Flags: --expose-internals
-require('../common');
+require('../../common');
 
 const assert = require('internal/assert');
 assert.fail('Unreachable!');
diff --git a/test/message/internal_assert_fail.out b/test/fixtures/assert/internal_assert_fail.snapshot
similarity index 52%
rename from test/message/internal_assert_fail.out
rename to test/fixtures/assert/internal_assert_fail.snapshot
index 408d6d3364470d..6821e0007dac80 100644
--- a/test/message/internal_assert_fail.out
+++ b/test/fixtures/assert/internal_assert_fail.snapshot
@@ -1,14 +1,14 @@
-node:internal/assert:*
+node:internal*assert*
   throw new ERR_INTERNAL_ASSERTION(message);
   ^
 
 Error [ERR_INTERNAL_ASSERTION]: Unreachable!
 This is caused by either a bug in Node.js or incorrect usage of Node.js internals.
-Please open an issue with this stack trace at https://github.com/nodejs/node/issues
+Please open an issue with this stack trace at https:**github.com*nodejs*node*issues
 
-    at new NodeError (node:internal/errors:*:*)
-    at Function.fail (node:internal/assert:*:*)
-    at * (*test*message*internal_assert_fail.js:7:8)
+    at *
+    at *
+    at *
     at *
     at *
     at *
diff --git a/test/parallel/test-output-assert.mjs b/test/parallel/test-output-assert.mjs
new file mode 100644
index 00000000000000..07454d5f1eb2b6
--- /dev/null
+++ b/test/parallel/test-output-assert.mjs
@@ -0,0 +1,33 @@
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import * as snapshot from '../common/assertSnapshot.js';
+import { describe, it } from 'node:test';
+
+function replaceStackTrace(str) {
+  return snapshot.replaceStackTrace(str, '$1at *$7\n');
+}
+function normalize(str) {
+  return str
+    .replaceAll(snapshot.replaceWindowsPaths(process.cwd()), '')
+    .replaceAll('/', '*')
+    .replaceAll(process.version, '*')
+    .replaceAll(/:\d+/g, '*');
+}
+const common = snapshot
+  .transform(snapshot.replaceWindowsLineEndings, snapshot.replaceWindowsPaths);
+
+const defaultTransform = snapshot.transform(common, replaceStackTrace, normalize);
+
+const tests = [
+  { name: 'assert/assert_throws_stack.js' },
+  { name: 'assert/internal_assert_fail.js' },
+  { name: 'assert/internal_assert.js' },
+];
+
+describe('assertion output', { concurrency: true }, () => {
+  for (const { name, transform } of tests) {
+    it(name, async () => {
+      await snapshot.spawnAndAssert(fixtures.path(name), transform ?? defaultTransform);
+    });
+  }
+});