add find action and reducer

test/content/actions/find.test.js

@@ -0,0 +1,19 @@
+import { expect } from "chai";
+import actions from 'content/actions';
+import * as findActions from 'content/actions/find';
+
+describe("find actions", () => {
+  describe("show", () => {
+    it('create FIND_SHOW action', () => {
+      let action = findActions.show();
+      expect(action.type).to.equal(actions.FIND_SHOW);
+    });
+  });
+
+  describe("hide", () => {
+    it('create FIND_HIDE action', () => {
+      let action = findActions.hide();
+      expect(action.type).to.equal(actions.FIND_HIDE);
+    });
+  });
+});