diff --git a/ansible/www-standalone/tools/promote/check_assets.js b/ansible/www-standalone/tools/promote/check_assets.js
index e8568f887..a02e143df 100755
--- a/ansible/www-standalone/tools/promote/check_assets.js
+++ b/ansible/www-standalone/tools/promote/check_assets.js
@@ -2,8 +2,6 @@
 
 const fs = require('fs').promises
 const path = require('path')
-const childProcess = require('child_process')
-const assert = require('assert')
 
 const versionRe = /^v\d+\.\d+\.\d+/
 const additionalDistAssets = [
@@ -217,388 +215,3 @@ async function execute () {
     console.log('    \u001b[33mPromote if you are certain this is the the correct course of action\u001b[39m')
   }
 }
-
-/* TESTS ***********************************************************************/
-
-function test () {
-  // makes a staging or dist directory given a version string
-  async function makeFixture (version, isStaging, dir, assets) {
-    if (!assets) {
-      assets = await loadExpectedAssets(version)
-    }
-    for (let asset of assets) {
-      let absoluteAsset = path.join(dir, asset)
-      if (asset.endsWith('/')) {
-        await fs.mkdir(absoluteAsset, { recursive: true })
-      } else {
-        await fs.writeFile(absoluteAsset, asset, 'utf8')
-      }
-      let dashPos = isStaging && asset.indexOf('/')
-      if (isStaging && (dashPos === -1 || dashPos === asset.length - 1)) {
-        // in staging, all files and directories that are ready have a
-        // duplicate empty file with .done in the name
-        await fs.writeFile(absoluteAsset.replace(/\/?$/, '.done'), asset, 'utf8')
-      }
-    }
-    return assets
-  }
-
-  async function rimraf (dir) {
-    const stat = await fs.stat(dir)
-    if (!stat.isDirectory()) {
-      await fs.unlink(dir)
-      return
-    }
-    const ls = await fs.readdir(dir)
-    for (let f of ls) {
-      f = path.join(dir, f)
-      const stat = await fs.stat(f)
-      if (stat.isDirectory()) {
-        await rimraf(f)
-      } else {
-        await fs.unlink(f)
-      }
-    }
-    await fs.rmdir(dir)
-  }
-
-  // execute check_assets.js with the given staging and dist dirs, collect output
-  async function executeMe (stagingDir, distDir) {
-    return new Promise((resolve, reject) => {
-      const args = [ '--no-warnings', __filename, stagingDir, distDir ]
-      childProcess.execFile(process.execPath, args, (err, stdout, stderr) => {
-        if (err) {
-          return reject(err)
-        }
-        if (stderr) {
-          console.log('STDERR:', stderr)
-        }
-        resolve(stdout)
-      })
-    })
-  }
-
-  async function runTest (number, version, expectedStdout, setup) {
-    const testDir = await fs.mkdtemp(`${__filename}_`)
-    const fixtureStagingDir = path.join(testDir, `staging/${version}`)
-    const fixtureDistDir = path.join(testDir, `dist/${version}`)
-    await setup(fixtureStagingDir, fixtureDistDir)
-
-    const stdout = await executeMe(fixtureStagingDir, fixtureDistDir)
-    console.log(`\nTest ${number} Assertions ???`)
-    console.log(`STDOUT------------------------------------------\n\n${stdout}\n------------------------------------------------`)
-    assert.equal(stdout, expectedStdout)
-    console.log(`Test ${number} Assertions ✓✓✓`)
-
-    await rimraf(testDir)
-  }
-  // TEST 1: Everything is in staging, nothing in dist, good to go
-  async function test1 () {
-    const version = 'v8.13.0'
-    const expectedStdout =
-      '... Checking assets\n' +
-      '... Expecting a total of 44 assets for v8.x\n' +
-      '... 44 assets waiting in staging\n' +
-      '... 0 assets already promoted\n' +
-      ' \u001b[32m\u001b[1m✓\u001b[22m\u001b[39m  Complete set of expected assets in place for v8.x\n'
-
-    async function setup (fixtureStagingDir, fixtureDistDir) {
-      await makeFixture(version, true, fixtureStagingDir)
-    }
-
-    return runTest(1, version, expectedStdout, setup)
-  }
-
-  // TEST 2: Not quite everything is in staging, missing two assets, nothing in dist
-  async function test2 () {
-    const version = 'v10.1.0'
-    const expectedStdout =
-      '... Checking assets\n' +
-      '... Expecting a total of 41 assets for v10.x\n' +
-      '... 38 assets waiting in staging\n' +
-      '... 0 assets already promoted\n' +
-      ' \u001b[33m\u001b[1m⚠\u001b[22m\u001b[39m  The following assets are expected for v10.x but are currently missing from staging:\n' +
-      '    • node-v10.1.0-linux-armv6l.tar.gz\n' +
-      '    • node-v10.1.0-linux-armv6l.tar.xz\n' +
-      '    • node-v10.1.0.pkg\n' +
-      '    \u001b[33mPromote if you are certain this is the the correct course of action\u001b[39m\n'
-
-    async function setup (fixtureStagingDir, fixtureDistDir) {
-      await makeFixture(version, true, fixtureStagingDir)
-      await Promise.all([
-        fs.unlink(path.join(fixtureStagingDir, 'node-v10.1.0-linux-armv6l.tar.gz')),
-        fs.unlink(path.join(fixtureStagingDir, 'node-v10.1.0-linux-armv6l.tar.gz.done')),
-        fs.unlink(path.join(fixtureStagingDir, 'node-v10.1.0-linux-armv6l.tar.xz')),
-        fs.unlink(path.join(fixtureStagingDir, 'node-v10.1.0-linux-armv6l.tar.xz.done')),
-        fs.unlink(path.join(fixtureStagingDir, 'node-v10.1.0.pkg')),
-        fs.unlink(path.join(fixtureStagingDir, 'node-v10.1.0.pkg.done'))
-      ])
-    }
-
-    return runTest(2, version, expectedStdout, setup)
-  }
-
-  // TEST 3: Everything in staging, 3 files in dist
-  async function test3 () {
-    const version = 'v6.0.1'
-    const expectedStdout =
-      '... Checking assets\n' +
-      '... Expecting a total of 46 assets for v6.x\n' +
-      '... 46 assets waiting in staging\n' +
-      ' \u001b[33m\u001b[1m⚠\u001b[22m\u001b[39m  3 assets already promoted will be overwritten, is this OK?\n' +
-      '    • node-v6.0.1-headers.tar.gz\n' +
-      '    • node-v6.0.1-x86.msi\n' +
-      '    • node-v6.0.1.tar.gz\n' +
-      ' \u001b[32m\u001b[1m✓\u001b[22m\u001b[39m  Complete set of expected assets in place for v6.x\n' +
-      '    \u001b[33mPromote if you are certain this is the the correct course of action\u001b[39m\n'
-
-    async function setup (fixtureStagingDir, fixtureDistDir) {
-      await makeFixture(version, true, fixtureStagingDir)
-      const distAssets = await makeFixture(version, false, fixtureDistDir)
-      await Promise.all(
-        distAssets.filter((a) => {
-          return a !== 'node-v6.0.1-headers.tar.gz' &&
-            a !== 'node-v6.0.1.tar.gz' &&
-            a !== 'node-v6.0.1-x86.msi' &&
-            // deleting all directories, so we don't need to delete the children
-            !/^win-x64\/.+/.test(a) &&
-            !/^win-x86\/.+/.test(a) &&
-            !/^docs\/.+/.test(a)
-        }).map((e) => rimraf(path.join(fixtureDistDir, e)))
-      )
-    }
-
-    return runTest(3, version, expectedStdout, setup)
-  }
-
-  // TEST 4: Everything in staging and everything in dist
-  async function test4 () {
-    const version = 'v11.11.11'
-    const expectedStdout =
-      '... Checking assets\n' +
-      '... Expecting a total of 41 assets for v11.x\n' +
-      '... 41 assets waiting in staging\n' +
-      ' \u001b[33m\u001b[1m⚠\u001b[22m\u001b[39m  41 assets already promoted will be overwritten, is this OK?\n' +
-      ' \u001b[32m\u001b[1m✓\u001b[22m\u001b[39m  Complete set of expected assets in place for v11.x\n' +
-      '    \u001b[33mPromote if you are certain this is the the correct course of action\u001b[39m\n'
-
-    async function setup (fixtureStagingDir, fixtureDistDir) {
-      await makeFixture(version, true, fixtureStagingDir)
-      await makeFixture(version, false, fixtureDistDir)
-    }
-
-    return runTest(4, version, expectedStdout, setup)
-  }
-
-  // TEST 5: No expected files list is available for this version, it has to guess
-  async function test5 () {
-    const version = 'v9.9.9'
-    const expectedStdout =
-      '... Checking assets\n' +
-      ' \u001b[33m\u001b[1m⚠\u001b[22m\u001b[39m  No expected asset list is available for v9.x, using the list for v8.x instead\n' +
-      '    Should a new list be created for v9.x?\n' +
-      '    https://github.com/nodejs/build/tree/main/ansible/www-standalone/tools/promote/expected_assets/v9.x\n' +
-      '... Expecting a total of 44 assets for v9.x\n' +
-      '... 41 assets waiting in staging\n' +
-      '... 0 assets already promoted\n' +
-      ' \u001b[33m\u001b[1m⚠\u001b[22m\u001b[39m  The following assets are expected for v9.x but are currently missing from staging:\n' +
-      '    • node-v9.9.9-linux-x86.tar.gz\n' +
-      '    • node-v9.9.9-linux-x86.tar.xz\n' +
-      '    • node-v9.9.9-sunos-x86.tar.gz\n' +
-      '    • node-v9.9.9-sunos-x86.tar.xz\n' +
-      ' \u001b[31m\u001b[1m✖\u001b[22m\u001b[39m  The following assets were found in staging but are not expected for v9.x:\n' +
-      '    • docs/apilinks.json\n' +
-      '    Does the expected assets list for v9.x need to be updated?\n' +
-      '    https://github.com/nodejs/build/tree/main/ansible/www-standalone/tools/promote/expected_assets/v9.x\n' +
-      '    \u001b[33mPromote if you are certain this is the the correct course of action\u001b[39m\n'
-
-    async function setup (fixtureStagingDir, fixtureDistDir) {
-      // use the 10.x list, which is missing the x86 files, it'll check the 9.x
-      const expectedAssets = await loadExpectedAssets(version, 'v10.x')
-      await makeFixture(version, true, fixtureStagingDir, expectedAssets)
-    }
-
-    return runTest(5, version, expectedStdout, setup)
-  }
-
-  // TEST 6: Everything is in dist except for the armv6l files, but they are in staging
-  async function test6 () {
-    const version = 'v10.0.0'
-    const expectedStdout =
-      '... Checking assets\n' +
-      '... Expecting a total of 41 assets for v10.x\n' +
-      '... 2 assets waiting in staging\n' +
-      '... 39 assets already promoted\n' +
-      ' \u001b[32m\u001b[1m✓\u001b[22m\u001b[39m  Complete set of expected assets in place for v10.x\n'
-
-    async function setup (fixtureStagingDir, fixtureDistDir) {
-      await fs.mkdir(fixtureStagingDir, { recursive: true })
-      await makeFixture(version, true, fixtureStagingDir, [
-        'node-v10.0.0-linux-armv6l.tar.gz',
-        'node-v10.0.0-linux-armv6l.tar.xz'
-      ])
-      await makeFixture(version, false, fixtureDistDir)
-      await Promise.all([
-        fs.unlink(path.join(fixtureDistDir, 'node-v10.0.0-linux-armv6l.tar.gz')),
-        fs.unlink(path.join(fixtureDistDir, 'node-v10.0.0-linux-armv6l.tar.xz'))
-      ])
-    }
-
-    return runTest(6, version, expectedStdout, setup)
-  }
-
-  // TEST 7: Some unexpected files in staging
-  async function test7 () {
-    const version = 'v10.0.0'
-    const expectedStdout =
-      '... Checking assets\n' +
-      '... Expecting a total of 41 assets for v10.x\n' +
-      '... 2 assets waiting in staging\n' +
-      '... 41 assets already promoted\n' +
-      ' \u001b[32m\u001b[1m✓\u001b[22m\u001b[39m  Complete set of expected assets in place for v10.x\n' +
-      ' \u001b[31m\u001b[1m✖\u001b[22m\u001b[39m  The following assets were found in staging but are not expected for v10.x:\n' +
-      '    • ooolaalaa.tar.gz\n' +
-      '    • whatdis.tar.xz\n' +
-      '    Does the expected assets list for v10.x need to be updated?\n' +
-      '    https://github.com/nodejs/build/tree/main/ansible/www-standalone/tools/promote/expected_assets/v10.x\n' +
-      '    \u001b[33mPromote if you are certain this is the the correct course of action\u001b[39m\n'
-
-    async function setup (fixtureStagingDir, fixtureDistDir) {
-      await fs.mkdir(fixtureStagingDir, { recursive: true })
-      await makeFixture(version, true, fixtureStagingDir, [
-        'ooolaalaa.tar.gz',
-        'whatdis.tar.xz'
-      ])
-      await makeFixture(version, false, fixtureDistDir)
-    }
-
-    return runTest(7, version, expectedStdout, setup)
-  }
-
-  // TEST 8: Unexpected files in subdirectories, only check 2 levels deep
-  async function test8 () {
-    const version = 'v11.11.1'
-    const expectedStdout =
-      '... Checking assets\n' +
-      '... Expecting a total of 41 assets for v11.x\n' +
-      '... 43 assets waiting in staging\n' +
-      '... 0 assets already promoted\n' +
-      ' \u001b[32m\u001b[1m✓\u001b[22m\u001b[39m  Complete set of expected assets in place for v11.x\n' +
-      ' \u001b[31m\u001b[1m✖\u001b[22m\u001b[39m  The following assets were found in staging but are not expected for v11.x:\n' +
-      '    • docs/bar\n' +
-      '    • docs/foo\n' +
-      '    Does the expected assets list for v11.x need to be updated?\n' +
-      '    https://github.com/nodejs/build/tree/main/ansible/www-standalone/tools/promote/expected_assets/v11.x\n' +
-      '    \u001b[33mPromote if you are certain this is the the correct course of action\u001b[39m\n'
-
-    async function setup (fixtureStagingDir, fixtureDistDir) {
-      await fs.mkdir(fixtureStagingDir, { recursive: true })
-      await makeFixture(version, true, fixtureStagingDir)
-      await Promise.all([
-        fs.writeFile(path.join(fixtureStagingDir, 'docs/foo'), 'foo'),
-        fs.writeFile(path.join(fixtureStagingDir, 'docs/bar'), 'foo'),
-        fs.writeFile(path.join(fixtureStagingDir, 'docs/api/baz'), 'bar')
-      ])
-    }
-
-    return runTest(8, version, expectedStdout, setup)
-  }
-
-  // TEST 9: Some unexpected files in dist
-  async function test9 () {
-    const version = 'v6.7.8'
-    const expectedStdout =
-      '... Checking assets\n' +
-      '... Expecting a total of 46 assets for v6.x\n' +
-      '... 46 assets waiting in staging\n' +
-      '... 2 assets already promoted\n' +
-      ' \u001b[32m\u001b[1m✓\u001b[22m\u001b[39m  Complete set of expected assets in place for v6.x\n' +
-      ' \u001b[31m\u001b[1m✖\u001b[22m\u001b[39m  The following assets were already promoted but are not expected for v6.x:\n' +
-      '    • ooolaalaa.tar.gz\n' +
-      '    • whatdis.tar.xz\n' +
-      '    Does the expected assets list for v6.x need to be updated?\n' +
-      '    https://github.com/nodejs/build/tree/main/ansible/www-standalone/tools/promote/expected_assets/v6.x\n' +
-      '    \u001b[33mPromote if you are certain this is the the correct course of action\u001b[39m\n'
-
-    async function setup (fixtureStagingDir, fixtureDistDir) {
-      await fs.mkdir(fixtureDistDir, { recursive: true })
-      await makeFixture(version, false, fixtureDistDir, [
-        'ooolaalaa.tar.gz',
-        'whatdis.tar.xz'
-      ])
-      await makeFixture(version, true, fixtureStagingDir)
-    }
-
-    return runTest(9, version, expectedStdout, setup)
-  }
-
-  // TEST 10: SHASUMS in dist already, shouldn't bother us
-  async function test10 () {
-    const version = 'v8.0.0'
-    const expectedStdout =
-      '... Checking assets\n' +
-      '... Expecting a total of 44 assets for v8.x\n' +
-      '... 44 assets waiting in staging\n' +
-      ' \u001b[33m\u001b[1m⚠\u001b[22m\u001b[39m  4 assets already promoted will be overwritten, is this OK?\n' +
-      '    • docs/\n' +
-      '    • docs/api/\n' +
-      '    • node-v8.0.0-linux-armv6l.tar.gz\n' +
-      '    • node-v8.0.0-linux-armv6l.tar.xz\n' +
-      ' \u001b[32m\u001b[1m✓\u001b[22m\u001b[39m  Complete set of expected assets in place for v8.x\n' +
-      '    \u001b[33mPromote if you are certain this is the the correct course of action\u001b[39m\n'
-
-    async function setup (fixtureStagingDir, fixtureDistDir) {
-      await fs.mkdir(fixtureDistDir, { recursive: true })
-      await Promise.all([
-        makeFixture(version, true, fixtureStagingDir),
-        makeFixture(version, false, fixtureDistDir, [
-          'SHASUMS256.txt',
-          'SHASUMS256.txt.asc',
-          'SHASUMS256.txt.sig',
-          'docs/',
-          'docs/api/',
-          'docs/api/bar',
-          'node-v8.0.0-linux-armv6l.tar.gz',
-          'node-v8.0.0-linux-armv6l.tar.xz'
-        ])
-      ])
-    }
-
-    return runTest(10, version, expectedStdout, setup)
-  }
-
-  // run in parallel and just print failures to stderr
-  let failures = 0
-  let passes = 0
-  const tests = [
-    test1,
-    test2,
-    test3,
-    test4,
-    test5,
-    test6,
-    test7,
-    test8,
-    test9,
-    test10
-  ]
-
-  tests.forEach((test) => {
-    test()
-      .then(() => passes++)
-      .catch((err) => {
-        failures++
-        console.error(err)
-      })
-  })
-
-  process.on('exit', () => {
-    if (failures) {
-      console.error(`\n\u001b[31mThere were ${failures} test failures\u001b[39m`)
-    } else if (passes === tests.length) {
-      console.error('\n\u001b[32mAll tests have passed!\u001b[39m')
-    } else {
-      console.error(`\n\u001b[31mNot all tests seem to have run, something's wrong\u001b[39m`)
-    }
-  })
-}
diff --git a/ansible/www-standalone/tools/promote/check_assets.test.mjs b/ansible/www-standalone/tools/promote/check_assets.test.mjs
new file mode 100755
index 000000000..232b72fe4
--- /dev/null
+++ b/ansible/www-standalone/tools/promote/check_assets.test.mjs
@@ -0,0 +1,316 @@
+import assert from 'node:assert';
+import { execFile } from 'node:child_process';
+import { mkdir, mkdtemp, readFile, rm, writeFile } from 'node:fs/promises';
+import { tmpdir } from 'node:os';
+import { basename, join } from 'node:path';
+import { afterEach, beforeEach, describe, it } from 'node:test';
+
+// execute check_assets.js with the given staging and dist dirs, collect output
+async function executeMe (stagingDir, distDir) {
+  return new Promise((resolve, reject) => {
+    const args = [ '--no-warnings', join(import.meta.dirname, 'check_assets.js'), stagingDir, distDir ];
+    execFile(process.execPath, args, (err, stdout, stderr) => {
+      if (err) {
+        return reject(err);
+      }
+      if (stderr) {
+        console.log('STDERR:', stderr);
+      }
+      resolve(stdout);
+    });
+  });
+}
+
+async function loadExpectedAssets (version, line) {
+  if (!line) {
+    line = versionToLine(version);
+  }
+  try {
+    const templateFile = join(import.meta.dirname, 'expected_assets', line);
+    let files = await readFile(templateFile, 'utf8');
+    return files.replace(/{VERSION}/g, version).split(/\n/g).filter(Boolean);
+  } catch (e) { }
+  return null;
+}
+
+// makes a staging or dist directory given a version string
+async function makeFixture (version, isStaging, dir, assets) {
+  if (!assets) {
+    assets = await loadExpectedAssets(version);
+  }
+  await mkdir(dir, { recursive: true });
+  for (let asset of assets) {
+    let absoluteAsset = join(dir, asset);
+    if (asset.endsWith('/')) {
+      await mkdir(absoluteAsset, { recursive: true });
+    } else {
+      await writeFile(absoluteAsset, asset, 'utf8');
+    }
+    let dashPos = isStaging && asset.indexOf('/');
+    if (isStaging && (dashPos === -1 || dashPos === asset.length - 1)) {
+      // in staging, all files and directories that are ready have a
+      // duplicate empty file with .done in the name
+      await writeFile(absoluteAsset.replace(/\/?$/, '.done'), asset, 'utf8');
+    }
+  }
+  return assets;
+}
+
+function versionToLine (version) {
+    return version.replace(/^(v\d+)\.[\d.]+.*/g, '$1.x')
+}
+
+const testcases = [
+  {
+    name: 'Everything is in staging, nothing in dist, good to go',
+    version: 'v8.13.0',
+    expectedStdout:
+      '... Checking assets\n' +
+      '... Expecting a total of 44 assets for v8.x\n' +
+      '... 44 assets waiting in staging\n' +
+      '... 0 assets already promoted\n' +
+      ' \u001b[32m\u001b[1m✓\u001b[22m\u001b[39m  Complete set of expected assets in place for v8.x\n',
+    setup: async function setup (version, fixtureStagingDir, fixtureDistDir) {
+      await makeFixture(version, true, fixtureStagingDir);
+    }
+  },
+  {
+    name: 'Not quite everything is in staging, missing two assets, nothing in dist',
+    version: 'v10.1.0',
+    expectedStdout:
+      '... Checking assets\n' +
+      '... Expecting a total of 41 assets for v10.x\n' +
+      '... 38 assets waiting in staging\n' +
+      '... 0 assets already promoted\n' +
+      ' \u001b[33m\u001b[1m⚠\u001b[22m\u001b[39m  The following assets are expected for v10.x but are currently missing from staging:\n' +
+      '    • node-v10.1.0-linux-armv6l.tar.gz\n' +
+      '    • node-v10.1.0-linux-armv6l.tar.xz\n' +
+      '    • node-v10.1.0.pkg\n' +
+      '    \u001b[33mPromote if you are certain this is the the correct course of action\u001b[39m\n',
+    setup: async function setup (version, fixtureStagingDir, fixtureDistDir) {
+      await makeFixture(version, true, fixtureStagingDir);
+      await Promise.all([
+        rm(join(fixtureStagingDir, 'node-v10.1.0-linux-armv6l.tar.gz')),
+        rm(join(fixtureStagingDir, 'node-v10.1.0-linux-armv6l.tar.gz.done')),
+        rm(join(fixtureStagingDir, 'node-v10.1.0-linux-armv6l.tar.xz')),
+        rm(join(fixtureStagingDir, 'node-v10.1.0-linux-armv6l.tar.xz.done')),
+        rm(join(fixtureStagingDir, 'node-v10.1.0.pkg')),
+        rm(join(fixtureStagingDir, 'node-v10.1.0.pkg.done'))
+      ]);
+    }
+  },
+  {
+    name: 'Everything in staging, 3 files in dist',
+    version: 'v6.0.1',
+    expectedStdout:
+      '... Checking assets\n' +
+      '... Expecting a total of 46 assets for v6.x\n' +
+      '... 46 assets waiting in staging\n' +
+      ' \u001b[33m\u001b[1m⚠\u001b[22m\u001b[39m  3 assets already promoted will be overwritten, is this OK?\n' +
+      '    • node-v6.0.1-headers.tar.gz\n' +
+      '    • node-v6.0.1-x86.msi\n' +
+      '    • node-v6.0.1.tar.gz\n' +
+      ' \u001b[32m\u001b[1m✓\u001b[22m\u001b[39m  Complete set of expected assets in place for v6.x\n' +
+      '    \u001b[33mPromote if you are certain this is the the correct course of action\u001b[39m\n',
+    setup: async function setup (version, fixtureStagingDir, fixtureDistDir) {
+      await makeFixture(version, true, fixtureStagingDir);
+      const distAssets = await makeFixture(version, false, fixtureDistDir);
+      await Promise.all(
+        distAssets.filter((a) => {
+          return a !== 'node-v6.0.1-headers.tar.gz' &&
+            a !== 'node-v6.0.1.tar.gz' &&
+            a !== 'node-v6.0.1-x86.msi' &&
+            // deleting all directories, so we don't need to delete the children
+            !/^win-x64\/.+/.test(a) &&
+            !/^win-x86\/.+/.test(a) &&
+            !/^docs\/.+/.test(a)
+        }).map((e) => rm(join(fixtureDistDir, e), { force: true, recursive: true }))
+      );
+    }
+  },
+  {
+    name: 'Everything in staging and everything in dist',
+    version: 'v11.11.11',
+    expectedStdout:
+      '... Checking assets\n' +
+      '... Expecting a total of 41 assets for v11.x\n' +
+      '... 41 assets waiting in staging\n' +
+      ' \u001b[33m\u001b[1m⚠\u001b[22m\u001b[39m  41 assets already promoted will be overwritten, is this OK?\n' +
+      ' \u001b[32m\u001b[1m✓\u001b[22m\u001b[39m  Complete set of expected assets in place for v11.x\n' +
+      '    \u001b[33mPromote if you are certain this is the the correct course of action\u001b[39m\n',
+    setup: async function setup (version, fixtureStagingDir, fixtureDistDir) {
+      await makeFixture(version, true, fixtureStagingDir);
+      await makeFixture(version, false, fixtureDistDir);
+    }
+  },
+  {
+    name: 'No expected files list is available for this version, it has to guess',
+    version: 'v9.9.9',
+    expectedStdout:
+      '... Checking assets\n' +
+      ' \u001b[33m\u001b[1m⚠\u001b[22m\u001b[39m  No expected asset list is available for v9.x, using the list for v8.x instead\n' +
+      '    Should a new list be created for v9.x?\n' +
+      '    https://github.com/nodejs/build/tree/main/ansible/www-standalone/tools/promote/expected_assets/v9.x\n' +
+      '... Expecting a total of 44 assets for v9.x\n' +
+      '... 41 assets waiting in staging\n' +
+      '... 0 assets already promoted\n' +
+      ' \u001b[33m\u001b[1m⚠\u001b[22m\u001b[39m  The following assets are expected for v9.x but are currently missing from staging:\n' +
+      '    • node-v9.9.9-linux-x86.tar.gz\n' +
+      '    • node-v9.9.9-linux-x86.tar.xz\n' +
+      '    • node-v9.9.9-sunos-x86.tar.gz\n' +
+      '    • node-v9.9.9-sunos-x86.tar.xz\n' +
+      ' \u001b[31m\u001b[1m✖\u001b[22m\u001b[39m  The following assets were found in staging but are not expected for v9.x:\n' +
+      '    • docs/apilinks.json\n' +
+      '    Does the expected assets list for v9.x need to be updated?\n' +
+      '    https://github.com/nodejs/build/tree/main/ansible/www-standalone/tools/promote/expected_assets/v9.x\n' +
+      '    \u001b[33mPromote if you are certain this is the the correct course of action\u001b[39m\n',
+    setup: async function setup (version, fixtureStagingDir, fixtureDistDir) {
+      // use the 10.x list, which is missing the x86 files, it'll check the 9.x
+      const expectedAssets = await loadExpectedAssets(version, 'v10.x');
+      await makeFixture(version, true, fixtureStagingDir, expectedAssets);
+    }
+  },
+  {
+    name: 'Everything is in dist except for the armv6l files, but they are in staging',
+    version: 'v10.0.0',
+    expectedStdout:
+      '... Checking assets\n' +
+      '... Expecting a total of 41 assets for v10.x\n' +
+      '... 2 assets waiting in staging\n' +
+      '... 39 assets already promoted\n' +
+      ' \u001b[32m\u001b[1m✓\u001b[22m\u001b[39m  Complete set of expected assets in place for v10.x\n',
+    setup: async function setup (version, fixtureStagingDir, fixtureDistDir) {
+      await makeFixture(version, true, fixtureStagingDir, [
+        'node-v10.0.0-linux-armv6l.tar.gz',
+        'node-v10.0.0-linux-armv6l.tar.xz'
+      ]);
+      await makeFixture(version, false, fixtureDistDir);
+      await Promise.all([
+        rm(join(fixtureDistDir, 'node-v10.0.0-linux-armv6l.tar.gz')),
+        rm(join(fixtureDistDir, 'node-v10.0.0-linux-armv6l.tar.xz'))
+      ]);
+    }
+  },
+  {
+    name: 'Some unexpected files in staging',
+    version: 'v10.0.0',
+    expectedStdout:
+      '... Checking assets\n' +
+      '... Expecting a total of 41 assets for v10.x\n' +
+      '... 2 assets waiting in staging\n' +
+      '... 41 assets already promoted\n' +
+      ' \u001b[32m\u001b[1m✓\u001b[22m\u001b[39m  Complete set of expected assets in place for v10.x\n' +
+      ' \u001b[31m\u001b[1m✖\u001b[22m\u001b[39m  The following assets were found in staging but are not expected for v10.x:\n' +
+      '    • ooolaalaa.tar.gz\n' +
+      '    • whatdis.tar.xz\n' +
+      '    Does the expected assets list for v10.x need to be updated?\n' +
+      '    https://github.com/nodejs/build/tree/main/ansible/www-standalone/tools/promote/expected_assets/v10.x\n' +
+      '    \u001b[33mPromote if you are certain this is the the correct course of action\u001b[39m\n',
+    setup: async function setup (version, fixtureStagingDir, fixtureDistDir) {
+      await makeFixture(version, true, fixtureStagingDir, [
+        'ooolaalaa.tar.gz',
+        'whatdis.tar.xz'
+      ]);
+      await makeFixture(version, false, fixtureDistDir);
+    }
+  },
+  {
+    name: 'Unexpected files in subdirectories, only check 2 levels deep',
+    version: 'v11.11.1',
+    expectedStdout:
+      '... Checking assets\n' +
+      '... Expecting a total of 41 assets for v11.x\n' +
+      '... 43 assets waiting in staging\n' +
+      '... 0 assets already promoted\n' +
+      ' \u001b[32m\u001b[1m✓\u001b[22m\u001b[39m  Complete set of expected assets in place for v11.x\n' +
+      ' \u001b[31m\u001b[1m✖\u001b[22m\u001b[39m  The following assets were found in staging but are not expected for v11.x:\n' +
+      '    • docs/bar\n' +
+      '    • docs/foo\n' +
+      '    Does the expected assets list for v11.x need to be updated?\n' +
+      '    https://github.com/nodejs/build/tree/main/ansible/www-standalone/tools/promote/expected_assets/v11.x\n' +
+      '    \u001b[33mPromote if you are certain this is the the correct course of action\u001b[39m\n',
+    setup: async function setup (version, fixtureStagingDir, fixtureDistDir) {
+      await makeFixture(version, true, fixtureStagingDir);
+      await Promise.all([
+        writeFile(join(fixtureStagingDir, 'docs/foo'), 'foo'),
+        writeFile(join(fixtureStagingDir, 'docs/bar'), 'foo'),
+        writeFile(join(fixtureStagingDir, 'docs/api/baz'), 'bar')
+      ]);
+    }
+  },
+  {
+    name: 'Some unexpected files in dist',
+    version: 'v6.7.8',
+    expectedStdout: '... Checking assets\n' +
+      '... Expecting a total of 46 assets for v6.x\n' +
+      '... 46 assets waiting in staging\n' +
+      '... 2 assets already promoted\n' +
+      ' \u001b[32m\u001b[1m✓\u001b[22m\u001b[39m  Complete set of expected assets in place for v6.x\n' +
+      ' \u001b[31m\u001b[1m✖\u001b[22m\u001b[39m  The following assets were already promoted but are not expected for v6.x:\n' +
+      '    • ooolaalaa.tar.gz\n' +
+      '    • whatdis.tar.xz\n' +
+      '    Does the expected assets list for v6.x need to be updated?\n' +
+      '    https://github.com/nodejs/build/tree/main/ansible/www-standalone/tools/promote/expected_assets/v6.x\n' +
+      '    \u001b[33mPromote if you are certain this is the the correct course of action\u001b[39m\n',
+    setup: async function setup (version, fixtureStagingDir, fixtureDistDir) {
+      await makeFixture(version, false, fixtureDistDir, [
+        'ooolaalaa.tar.gz',
+        'whatdis.tar.xz'
+      ]);
+      await makeFixture(version, true, fixtureStagingDir);
+    }
+  },
+  {
+    name: 'SHASUMS in dist already, shouldn\'t bother us',
+    version: 'v8.0.0',
+    expectedStdout:
+      '... Checking assets\n' +
+      '... Expecting a total of 44 assets for v8.x\n' +
+      '... 44 assets waiting in staging\n' +
+      ' \u001b[33m\u001b[1m⚠\u001b[22m\u001b[39m  4 assets already promoted will be overwritten, is this OK?\n' +
+      '    • docs/\n' +
+      '    • docs/api/\n' +
+      '    • node-v8.0.0-linux-armv6l.tar.gz\n' +
+      '    • node-v8.0.0-linux-armv6l.tar.xz\n' +
+      ' \u001b[32m\u001b[1m✓\u001b[22m\u001b[39m  Complete set of expected assets in place for v8.x\n' +
+      '    \u001b[33mPromote if you are certain this is the the correct course of action\u001b[39m\n',
+    setup: async function setup (version, fixtureStagingDir, fixtureDistDir) {
+      await Promise.all([
+        makeFixture(version, true, fixtureStagingDir),
+        makeFixture(version, false, fixtureDistDir, [
+          'SHASUMS256.txt',
+          'SHASUMS256.txt.asc',
+          'SHASUMS256.txt.sig',
+          'docs/',
+          'docs/api/',
+          'docs/api/bar',
+          'node-v8.0.0-linux-armv6l.tar.gz',
+          'node-v8.0.0-linux-armv6l.tar.xz'
+        ])
+      ]);
+    }
+  },
+];
+
+describe(`${basename(import.meta.filename, '.test.mjs')} tests`, async () => {
+  beforeEach(async (context) => {
+    context.testDir = await mkdtemp(join(tmpdir(), `${basename(import.meta.filename)}_`));
+    context.fixtureDistDir = join(context.testDir, 'dist');
+    context.fixtureStagingDir = join(context.testDir, 'staging');
+    await mkdir(context.fixtureDistDir);
+    await mkdir(context.fixtureStagingDir);
+  });
+  afterEach(async (context) => {
+    await rm(context.testDir, { recursive: true, force: true, maxRetries: 10 });
+  });
+  for (const { name, version, expectedStdout, setup } of testcases) {
+    it(name, async (context) => {
+      const fixtureStagingDir = join(context.fixtureStagingDir, version);
+      const fixtureDistDir = join(context.fixtureDistDir, version);
+      await setup(version, fixtureStagingDir, fixtureDistDir);
+    
+      const stdout = await executeMe(fixtureStagingDir, fixtureDistDir);
+      assert.strictEqual(stdout, expectedStdout);
+    });
+  }
+});