1 files changed, 15 insertions, 0 deletions
diff --git a/spec/javascripts/notebook/lib/highlight_spec.js b/spec/javascripts/notebook/lib/highlight_spec.js
new file mode 100644
index 00000000000..d71c5718858
--- /dev/null
+++ b/spec/javascripts/notebook/lib/highlight_spec.js
@@ -0,0 +1,15 @@
+import Prism from '~/notebook/lib/highlight';
+
+describe('Highlight library', () => {
+  it('imports python language', () => {
+    expect(Prism.languages.python).toBeDefined();
+  });
+
+  it('uses custom CSS classes', () => {
+    const el = document.createElement('div');
+    el.innerHTML = Prism.highlight('console.log("a");', Prism.languages.javascript);
+
+    expect(el.querySelector('.s')).not.toBeNull();
+    expect(el.querySelector('.nf')).not.toBeNull();
+  });
+});