Add missing unit tests for PR #5499 (#5527)

Part of #5410

browser/app/js/objects/__tests__/ObjectItem.test.js

@@ -0,0 +1,37 @@
+/*
+ * Minio Cloud Storage (C) 2018 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import React from "react"
+import { shallow } from "enzyme"
+import { ObjectItem } from "../ObjectItem"
+
+describe("ObjectItem", () => {
+  it("should render without crashing", () => {
+    shallow(<ObjectItem name={"test"} />)
+  })
+
+  it("should render with content type", () => {
+    const wrapper = shallow(<ObjectItem name={"test.jpg"} contentType={""} />)
+    expect(wrapper.prop("data-type")).toBe("image")
+  })
+
+  it("should call onClick when the object isclicked", () => {
+    const onClick = jest.fn()
+    const wrapper = shallow(<ObjectItem name={"test"} onClick={onClick} />)
+    wrapper.find("a").simulate("click", { preventDefault: jest.fn() })
+    expect(onClick).toHaveBeenCalled()
+  })
+})