add follow action and reducers test

test/actions/follow.test.js

@@ -0,0 +1,35 @@
+import { expect } from "chai";
+import actions from '../../src/actions';
+import * as followActions from '../../src/actions/follow';
+
+describe('follow actions', () => {
+  describe('enable', () => {
+    it('creates FOLLOW_ENABLE action', () => {
+      let action = followActions.enable(true);
+      expect(action.type).to.equal(actions.FOLLOW_ENABLE);
+      expect(action.newTab).to.equal(true);
+    });
+  });
+
+  describe('disable', () => {
+    it('creates FOLLOW_DISABLE action', () => {
+      let action = followActions.disable(true);
+      expect(action.type).to.equal(actions.FOLLOW_DISABLE);
+    });
+  });
+
+  describe('keyPress', () => {
+    it('creates FOLLOW_KEY_PRESS action', () => {
+      let action = followActions.keyPress(100);
+      expect(action.type).to.equal(actions.FOLLOW_KEY_PRESS);
+      expect(action.key).to.equal(100);
+    });
+  });
+
+  describe('backspace', () => {
+    it('creates FOLLOW_BACKSPACE action', () => {
+      let action = followActions.backspace(100);
+      expect(action.type).to.equal(actions.FOLLOW_BACKSPACE);
+    });
+  });
+});