1 files changed, 51 insertions, 0 deletions
diff --git a/spec/frontend/ide/stores/modules/branches/mutations_spec.js b/spec/frontend/ide/stores/modules/branches/mutations_spec.js
new file mode 100644
index 00000000000..ed8e05bf299
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+++ b/spec/frontend/ide/stores/modules/branches/mutations_spec.js
@@ -0,0 +1,51 @@
+import state from '~/ide/stores/modules/branches/state';
+import mutations from '~/ide/stores/modules/branches/mutations';
+import * as types from '~/ide/stores/modules/branches/mutation_types';
+import { branches } from '../../../mock_data';
+
+describe('IDE branches mutations', () => {
+  let mockedState;
+
+  beforeEach(() => {
+    mockedState = state();
+  });
+
+  describe('REQUEST_BRANCHES', () => {
+    it('sets loading to true', () => {
+      mutations[types.REQUEST_BRANCHES](mockedState);
+
+      expect(mockedState.isLoading).toBe(true);
+    });
+  });
+
+  describe('RECEIVE_BRANCHES_ERROR', () => {
+    it('sets loading to false', () => {
+      mutations[types.RECEIVE_BRANCHES_ERROR](mockedState);
+
+      expect(mockedState.isLoading).toBe(false);
+    });
+  });
+
+  describe('RECEIVE_BRANCHES_SUCCESS', () => {
+    it('sets branches', () => {
+      const expectedBranches = branches.map(branch => ({
+        name: branch.name,
+        committedDate: branch.commit.committed_date,
+      }));
+
+      mutations[types.RECEIVE_BRANCHES_SUCCESS](mockedState, branches);
+
+      expect(mockedState.branches).toEqual(expectedBranches);
+    });
+  });
+
+  describe('RESET_BRANCHES', () => {
+    it('clears branches array', () => {
+      mockedState.branches = ['test'];
+
+      mutations[types.RESET_BRANCHES](mockedState);
+
+      expect(mockedState.branches).toEqual([]);
+    });
+  });
+});