diff --git a/tests/tests-workspaces/workspaces-ts/ts-b/index.ts b/tests/tests-workspaces/workspaces-ts/ts-b/index.ts
index 103d63b0..426e23a3 100644
--- a/tests/tests-workspaces/workspaces-ts/ts-b/index.ts
+++ b/tests/tests-workspaces/workspaces-ts/ts-b/index.ts
@@ -1,5 +1,8 @@
 import {foo} from 'ts-a'
+import localfile from './local-file.js'
 
 export default function test () {
   return foo()
 }
+
+export const localfilewrap = () => localfile()
diff --git a/tests/tests-workspaces/workspaces-ts/ts-b/local-file.ts b/tests/tests-workspaces/workspaces-ts/ts-b/local-file.ts
new file mode 100644
index 00000000..6fd75c5f
--- /dev/null
+++ b/tests/tests-workspaces/workspaces-ts/ts-b/local-file.ts
@@ -0,0 +1 @@
+export default () => 'local-value'
diff --git a/tests/tests-workspaces/workspaces-ts/ts-b/test.ts b/tests/tests-workspaces/workspaces-ts/ts-b/test.ts
index f0d6d3f0..6eb6f968 100644
--- a/tests/tests-workspaces/workspaces-ts/ts-b/test.ts
+++ b/tests/tests-workspaces/workspaces-ts/ts-b/test.ts
@@ -9,3 +9,11 @@ test('works ootb', async () => {
 
   assert.equal(sut(), 'bar')
 })
+
+test('also mocks local file', async () => {
+  const { localfilewrap } = await esmock('./index.js', {
+    './local-file.js': () => 'local-value-mocked'
+  })
+
+  assert.equal(localfilewrap(), 'local-value-mocked')
+})