1 files changed, 65 insertions, 0 deletions
diff --git a/spec/frontend/emoji/awards_app/store/mutations_spec.js b/spec/frontend/emoji/awards_app/store/mutations_spec.js
new file mode 100644
index 00000000000..dd32c3a4445
--- /dev/null
+++ b/spec/frontend/emoji/awards_app/store/mutations_spec.js
@@ -0,0 +1,65 @@
+import {
+  SET_INITIAL_DATA,
+  FETCH_AWARDS_SUCCESS,
+  ADD_NEW_AWARD,
+  REMOVE_AWARD,
+} from '~/emoji/awards_app/store/mutation_types';
+import mutations from '~/emoji/awards_app/store/mutations';
+
+describe('Awards app mutations', () => {
+  describe('SET_INITIAL_DATA', () => {
+    it('sets initial data', () => {
+      const state = {};
+
+      mutations[SET_INITIAL_DATA](state, {
+        path: 'https://gitlab.com',
+        currentUserId: 1,
+        canAwardEmoji: true,
+      });
+
+      expect(state).toEqual({
+        path: 'https://gitlab.com',
+        currentUserId: 1,
+        canAwardEmoji: true,
+      });
+    });
+  });
+
+  describe('FETCH_AWARDS_SUCCESS', () => {
+    it('sets awards', () => {
+      const state = { awards: [] };
+
+      mutations[FETCH_AWARDS_SUCCESS](state, ['thumbsup']);
+
+      expect(state.awards).toEqual(['thumbsup']);
+    });
+
+    it('does not overwrite previously set awards', () => {
+      const state = { awards: ['thumbsup'] };
+
+      mutations[FETCH_AWARDS_SUCCESS](state, ['thumbsdown']);
+
+      expect(state.awards).toEqual(['thumbsup', 'thumbsdown']);
+    });
+  });
+
+  describe('ADD_NEW_AWARD', () => {
+    it('adds new award to array', () => {
+      const state = { awards: ['thumbsup'] };
+
+      mutations[ADD_NEW_AWARD](state, 'thumbsdown');
+
+      expect(state.awards).toEqual(['thumbsup', 'thumbsdown']);
+    });
+  });
+
+  describe('REMOVE_AWARD', () => {
+    it('removes award from array', () => {
+      const state = { awards: [{ id: 1 }, { id: 2 }] };
+
+      mutations[REMOVE_AWARD](state, 1);
+
+      expect(state.awards).toEqual([{ id: 2 }]);
+    });
+  });
+});