diff --git a/js/tests/hello-there_test.js b/js/tests/hello-there_test.js
new file mode 100644
index 00000000..2647a547
--- /dev/null
+++ b/js/tests/hello-there_test.js
@@ -0,0 +1,20 @@
+import { readFileSync as read } from 'fs'
+
+// /*/ // ⚡
+export const tests = [
+  ({ eq }) => // code must use console.log
+    read('/jail/student/hello-there.js', 'utf8').trim().includes('console.log'),
+
+  async ({ eq, ctx }) => {
+    // console.log must have been called with the right value
+    const log = console.log.bind(console)
+    const args = []
+    console.log = (..._args) => {
+      args.push(..._args)
+      log(..._args)
+    }
+    await import('/jail/student/hello-there.js')
+    console.log = log
+    eq(ctx.args.join(' ').trim(), 'Hello There')
+  },
+]