refactor Dropzone component and added tests (#5578)

browser/app/js/browser/MainContent.js

@@ -23,13 +23,16 @@ import BucketPolicyModal from "../buckets/BucketPolicyModal"
 import MakeBucketModal from "../buckets/MakeBucketModal"
 import UploadModal from "../uploads/UploadModal"
 import ObjectsBulkActions from "../objects/ObjectsBulkActions"
+import Dropzone from "../uploads/Dropzone"
 
 export const MainContent = () => (
   <div className="fe-body">
     <ObjectsBulkActions />
     <MobileHeader />
+    <Dropzone>
       <Header />
       <ObjectsSection />
+    </Dropzone>
     <MainActions />
     <BucketPolicyModal />
     <MakeBucketModal />

browser/app/js/uploads/Dropzone.js

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage (C) 2016 Minio, Inc.
+ * Minio Cloud Storage (C) 2016, 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.
@@ -14,23 +14,21 @@
  * limitations under the License.
  */
 
-import React from 'react'
-import ReactDropzone from 'react-dropzone'
-import * as actions from '../actions'
+import React from "react"
+import { connect } from "react-redux"
+import ReactDropzone from "react-dropzone"
+import * as actions from "./actions"
 
 // Dropzone is a drag-and-drop element for uploading files. It will create a
 // landing zone of sorts that automatically receives the files.
-export default class Dropzone extends React.Component {
-
+export class Dropzone extends React.Component {
   onDrop(files) {
+    const { uploadFile } = this.props
     // FIXME: Currently you can upload multiple files, but only one abort
     // modal will be shown, and progress updates will only occur for one
     // file at a time. See #171.
     files.forEach(file => {
-      let req = new XMLHttpRequest()
-
-      // Dispatch the upload.
-      web.dispatch(actions.uploadFile(file, req))
+      uploadFile(file)
     })
   }
 
@@ -38,29 +36,39 @@ export default class Dropzone extends React.Component {
     // Overwrite the default styling from react-dropzone; otherwise it
     // won't handle child elements correctly.
     const style = {
-      height: '100%',
-      borderWidth: '0',
-      borderStyle: 'dashed',
-      borderColor: '#fff'
+      height: "100%",
+      borderWidth: "0",
+      borderStyle: "dashed",
+      borderColor: "#fff"
     }
     const activeStyle = {
-      borderWidth: '2px',
-      borderColor: '#777'
+      borderWidth: "2px",
+      borderColor: "#777"
     }
     const rejectStyle = {
-      backgroundColor: '#ffdddd'
+      backgroundColor: "#ffdddd"
     }
 
     // disableClick means that it won't trigger a file upload box when
     // the user clicks on a file.
     return (
-      <ReactDropzone style={ style }
-        activeStyle={ activeStyle }
-        rejectStyle={ rejectStyle }
-        disableClick={ true }
-        onDrop={ this.onDrop }>
-        { this.props.children }
+      <ReactDropzone
+        style={style}
+        activeStyle={activeStyle}
+        rejectStyle={rejectStyle}
+        disableClick={true}
+        onDrop={this.onDrop.bind(this)}
+      >
+        {this.props.children}
       </ReactDropzone>
     )
   }
 }
+
+const mapDispatchToProps = dispatch => {
+  return {
+    uploadFile: file => dispatch(actions.uploadFile(file))
+  }
+}
+
+export default connect(undefined, mapDispatchToProps)(Dropzone)

browser/app/js/uploads/__tests__/Dropzone.test.js

@@ -0,0 +1,34 @@
+/*
+ * 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 { Dropzone } from "../Dropzone"
+
+describe("Dropzone", () => {
+  it("should render without crashing", () => {
+    shallow(<Dropzone />)
+  })
+
+  it("should call uploadFile with files", () => {
+    const uploadFile = jest.fn()
+    const wrapper = shallow(<Dropzone uploadFile={uploadFile} />)
+    const file1 = new Blob(["file content1"], { type: "text/plain" })
+    const file2 = new Blob(["file content2"], { type: "text/plain" })
+    wrapper.first().prop("onDrop")([file1, file2])
+    expect(uploadFile.mock.calls).toEqual([[file1], [file2]])
+  })
+})