1 files changed, 17 insertions, 0 deletions
diff --git a/web_src/js/features/repo-code.test.ts b/web_src/js/features/repo-code.test.ts
new file mode 100644
index 0000000000..27554aa847
--- /dev/null
+++ b/web_src/js/features/repo-code.test.ts
@@ -0,0 +1,17 @@
+import {singleAnchorRegex, rangeAnchorRegex} from './repo-code.ts';
+
+test('singleAnchorRegex', () => {
+  expect(singleAnchorRegex.test('#L0')).toEqual(false);
+  expect(singleAnchorRegex.test('#L1')).toEqual(true);
+  expect(singleAnchorRegex.test('#L01')).toEqual(false);
+  expect(singleAnchorRegex.test('#n0')).toEqual(false);
+  expect(singleAnchorRegex.test('#n1')).toEqual(true);
+  expect(singleAnchorRegex.test('#n01')).toEqual(false);
+});
+
+test('rangeAnchorRegex', () => {
+  expect(rangeAnchorRegex.test('#L0-L10')).toEqual(false);
+  expect(rangeAnchorRegex.test('#L1-L10')).toEqual(true);
+  expect(rangeAnchorRegex.test('#L01-L10')).toEqual(false);
+  expect(rangeAnchorRegex.test('#L1-L01')).toEqual(false);
+});