Update Mermaid to v8.2.6

This fixes a regression where an underscore in labels no
longer worked:
https://github.com/knsv/mermaid/releases

1 files changed, 13 insertions, 1 deletions

diff --git a/spec/frontend/branches/divergence_graph_spec.js b/spec/frontend/branches/divergence_graph_spec.js
index 8283bc966e4..adf39a2216a 100644
--- a/spec/frontend/branches/divergence_graph_spec.js
+++ b/spec/frontend/branches/divergence_graph_spec.js
@@ -25,13 +25,25 @@ describe('Divergence graph', () => {
     mock.restore();
   });
 
-  it('calls axos get with list of branch names', () =>
+  it('calls axios get with list of branch names', () =>
     init('/-/diverging_counts').then(() => {
       expect(axios.get).toHaveBeenCalledWith('/-/diverging_counts', {
         params: { names: ['master', 'test/hello-world'] },
       });
     }));
 
+  describe('no branches listed', () => {
+    beforeEach(() => {
+      document.body.innerHTML = `<div></div>`;
+    });
+
+    it('avoids requesting diverging commit counts', () => {
+      expect(axios.get).not.toHaveBeenCalledWith('/-/diverging_counts');
+
+      init('/-/diverging_counts');
+    });
+  });
+
   it('creates Vue components', () =>
     init('/-/diverging_counts').then(() => {
       expect(document.querySelector('[data-name="master"]').innerHTML).not.toEqual('');