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diff --git a/spec/frontend/feature_flags/store/edit/mutations_spec.js b/spec/frontend/feature_flags/store/edit/mutations_spec.js
new file mode 100644
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+++ b/spec/frontend/feature_flags/store/edit/mutations_spec.js
@@ -0,0 +1,134 @@
+import state from '~/feature_flags/store/edit/state';
+import mutations from '~/feature_flags/store/edit/mutations';
+import * as types from '~/feature_flags/store/edit/mutation_types';
+
+describe('Feature flags Edit Module Mutations', () => {
+  let stateCopy;
+
+  beforeEach(() => {
+    stateCopy = state({ endpoint: 'feature_flags.json', path: '/feature_flags' });
+  });
+
+  describe('REQUEST_FEATURE_FLAG', () => {
+    it('should set isLoading to true', () => {
+      mutations[types.REQUEST_FEATURE_FLAG](stateCopy);
+
+      expect(stateCopy.isLoading).toEqual(true);
+    });
+
+    it('should set error to an empty array', () => {
+      mutations[types.REQUEST_FEATURE_FLAG](stateCopy);
+
+      expect(stateCopy.error).toEqual([]);
+    });
+  });
+
+  describe('RECEIVE_FEATURE_FLAG_SUCCESS', () => {
+    const data = {
+      name: '*',
+      description: 'All environments',
+      scopes: [{ id: 1 }],
+      iid: 5,
+      version: 'new_version_flag',
+      strategies: [
+        { id: 1, scopes: [{ environment_scope: '*' }], name: 'default', parameters: {} },
+      ],
+    };
+
+    beforeEach(() => {
+      mutations[types.RECEIVE_FEATURE_FLAG_SUCCESS](stateCopy, data);
+    });
+
+    it('should set isLoading to false', () => {
+      expect(stateCopy.isLoading).toEqual(false);
+    });
+
+    it('should set hasError to false', () => {
+      expect(stateCopy.hasError).toEqual(false);
+    });
+
+    it('should set name with the provided one', () => {
+      expect(stateCopy.name).toEqual(data.name);
+    });
+
+    it('should set description with the provided one', () => {
+      expect(stateCopy.description).toEqual(data.description);
+    });
+
+    it('should set scope with the provided one', () => {
+      expect(stateCopy.scope).toEqual(data.scope);
+    });
+
+    it('should set the iid to the provided one', () => {
+      expect(stateCopy.iid).toEqual(data.iid);
+    });
+
+    it('should set the version to the provided one', () => {
+      expect(stateCopy.version).toBe('new_version_flag');
+    });
+
+    it('should set the strategies to the provided one', () => {
+      expect(stateCopy.strategies).toEqual([
+        {
+          id: 1,
+          scopes: [{ environmentScope: '*', shouldBeDestroyed: false }],
+          name: 'default',
+          parameters: {},
+          shouldBeDestroyed: false,
+        },
+      ]);
+    });
+  });
+
+  describe('RECEIVE_FEATURE_FLAG_ERROR', () => {
+    beforeEach(() => {
+      mutations[types.RECEIVE_FEATURE_FLAG_ERROR](stateCopy);
+    });
+
+    it('should set isLoading to false', () => {
+      expect(stateCopy.isLoading).toEqual(false);
+    });
+
+    it('should set hasError to true', () => {
+      expect(stateCopy.hasError).toEqual(true);
+    });
+  });
+
+  describe('REQUEST_UPDATE_FEATURE_FLAG', () => {
+    beforeEach(() => {
+      mutations[types.REQUEST_UPDATE_FEATURE_FLAG](stateCopy);
+    });
+
+    it('should set isSendingRequest to true', () => {
+      expect(stateCopy.isSendingRequest).toEqual(true);
+    });
+
+    it('should set error to an empty array', () => {
+      expect(stateCopy.error).toEqual([]);
+    });
+  });
+
+  describe('RECEIVE_UPDATE_FEATURE_FLAG_SUCCESS', () => {
+    it('should set isSendingRequest to false', () => {
+      mutations[types.RECEIVE_UPDATE_FEATURE_FLAG_SUCCESS](stateCopy);
+
+      expect(stateCopy.isSendingRequest).toEqual(false);
+    });
+  });
+
+  describe('RECEIVE_UPDATE_FEATURE_FLAG_ERROR', () => {
+    beforeEach(() => {
+      mutations[types.RECEIVE_UPDATE_FEATURE_FLAG_ERROR](stateCopy, {
+        message: ['Name is required'],
+      });
+    });
+
+    it('should set isSendingRequest to false', () => {
+      expect(stateCopy.isSendingRequest).toEqual(false);
+    });
+
+    it('should set error to the given message', () => {
+      expect(stateCopy.error).toEqual(['Name is required']);
+    });
+  });
+});