1 files changed, 15 insertions, 0 deletions
diff --git a/spec/frontend/diffs/utils/suggestions_spec.js b/spec/frontend/diffs/utils/suggestions_spec.js
new file mode 100644
index 00000000000..fbfe9cef857
--- /dev/null
+++ b/spec/frontend/diffs/utils/suggestions_spec.js
@@ -0,0 +1,15 @@
+import { computeSuggestionCommitMessage } from '~/diffs/utils/suggestions';
+
+describe('Diff Suggestions utilities', () => {
+  describe('computeSuggestionCommitMessage', () => {
+    it.each`
+      description                                                     | input              | values                        | output
+      ${'makes the appropriate replacements'}                         | ${'%{foo} %{bar}'} | ${{ foo: 'foo', bar: 'bar' }} | ${'foo bar'}
+      ${"skips replacing values that aren't passed"}                  | ${'%{foo} %{bar}'} | ${{ foo: 'foo' }}             | ${'foo %{bar}'}
+      ${'treats the number 0 as a valid value (not falsey)'}          | ${'%{foo} %{bar}'} | ${{ foo: 'foo', bar: 0 }}     | ${'foo 0'}
+      ${"works when the variables don't have any space between them"} | ${'%{foo}%{bar}'}  | ${{ foo: 'foo', bar: 'bar' }} | ${'foobar'}
+    `('$description', ({ input, output, values }) => {
+      expect(computeSuggestionCommitMessage({ message: input, values })).toBe(output);
+    });
+  });
+});