fix scan image offline bug

frontend/farmware/weed_detector/__tests__/image_workspace_test.tsx

@@ -1,9 +1,12 @@
+import React from "react";
+import { mount } from "enzyme";
 import { ImageWorkspace, ImageWorkspaceProps } from "../image_workspace";
 import { fakeImage } from "../../../__test_support__/fake_state/resources";
 import { TaggedImage } from "farmbot";
 import { fakeTimeSettings } from "../../../__test_support__/fake_time_settings";
+import { clickButton } from "../../../__test_support__/helpers";
 
-describe("<Body/>", () => {
+describe("<ImageWorkspace />", () => {
   const fakeProps = (): ImageWorkspaceProps => ({
     onFlip: jest.fn(),
     onProcessPhoto: jest.fn(),
@@ -84,4 +87,21 @@ describe("<Body/>", () => {
     iw.maybeProcessPhoto();
     expect(p.onProcessPhoto).toHaveBeenCalledWith(photo2.body.id);
   });
+
+  it("scans image", () => {
+    const image = fakeImage();
+    const p = fakeProps();
+    p.botOnline = true;
+    p.images = [image];
+    const wrapper = mount(<ImageWorkspace {...p} />);
+    clickButton(wrapper, 0, "scan image");
+    expect(p.onProcessPhoto).toHaveBeenCalledWith(image.body.id);
+  });
+
+  it("disables scan image button when offline", () => {
+    const p = fakeProps();
+    p.botOnline = false;
+    const wrapper = mount(<ImageWorkspace {...p} />);
+    expect(wrapper.find("button").first().props().disabled).toBeTruthy();
+  });
 });

frontend/farmware/weed_detector/image_workspace.tsx

@@ -156,7 +156,7 @@ export class ImageWorkspace extends React.Component<ImageWorkspaceProps, {}> {
             className="green fb-button"
             title="Scan this image"
             onClick={this.maybeProcessPhoto}
-            disabled={this.props.botOnline}
+            disabled={!this.props.botOnline}
             hidden={!this.props.images.length} >
             {t("Scan image")}
           </button>