diff --git a/.fmf/version b/.fmf/version
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/.fmf/version
@@ -0,0 +1 @@
+1
diff --git a/plans/test.fmf b/plans/test.fmf
new file mode 100644
index 0000000..c1627f9
--- /dev/null
+++ b/plans/test.fmf
@@ -0,0 +1,5 @@
+summary: Basic smoke test
+discover:
+    how: fmf
+execute:
+    how: tmt
diff --git a/tests/validation/main.fmf b/tests/validation/main.fmf
new file mode 100644
index 0000000..d396a72
--- /dev/null
+++ b/tests/validation/main.fmf
@@ -0,0 +1,8 @@
+summary: Lint check for GNOME-Shell extension files
+test: ./test.sh
+framework: beakerlib
+require:
+    - gjs
+    - glib2
+    - gnome-shell-extension-no-overview
+    - json-glib-devel
diff --git a/tests/validation/main.js b/tests/validation/main.js
new file mode 100644
index 0000000..c5163d9
--- /dev/null
+++ b/tests/validation/main.js
@@ -0,0 +1,17 @@
+import GObject from 'gi://GObject';
+
+export const LayoutManager = GObject.registerClass(
+class LayoutManager extends GObject.Object {
+    constructor() {
+        super();
+        this._startingUp = 1;
+    }
+
+    connectObject(object) {
+    }
+
+    disconnectObject(object) {
+    }
+});
+
+export let layoutManager =  new LayoutManager();
diff --git a/tests/validation/test.js b/tests/validation/test.js
new file mode 100644
index 0000000..ae1b278
--- /dev/null
+++ b/tests/validation/test.js
@@ -0,0 +1,7 @@
+import GObject from 'gi://GObject';
+
+import NoOverviewExtension from './extension.js';
+
+let extension = new NoOverviewExtension();
+extension.enable();
+extension.disable();
diff --git a/tests/validation/test.sh b/tests/validation/test.sh
new file mode 100755
index 0000000..b7e5709
--- /dev/null
+++ b/tests/validation/test.sh
@@ -0,0 +1,17 @@
+#!/bin/bash
+# vim: dict+=/usr/share/beakerlib/dictionary.vim cpt=.,w,b,u,t,i,k
+
+# gjs or js115 in mozjs115-devel provides very simple validations.
+
+. /usr/share/beakerlib/beakerlib.sh || exit 1
+
+rlJournalStart
+    rlPhaseStartSetup
+        rlRun -t "sed -e 's|resource:.*/main.js|./main.js|' /usr/share/gnome-shell/extensions/no-overview@fthx/extension.js > extension.js"
+    rlPhaseEnd
+
+    rlPhaseStartTest
+        rlRun -t "json-glib-validate /usr/share/gnome-shell/extensions/no-overview@fthx/metadata.json"
+        rlRun -t "gjs -m test.js"
+    rlPhaseEnd
+rlJournalEnd