increase test coverage

frontend/curves/templates.tsx

@@ -2,20 +2,18 @@ import { t } from "i18next";
 import { Color, DropDownItem } from "../ui";
 import { Curve } from "farmbot/dist/resources/api_resources";
 import { TaggedCurve } from "farmbot";
-import { PanelColor } from "../farm_designer/panel_header";
 
 export enum CurveType {
   water = "water",
   spread = "spread",
   height = "height",
 }
 
-export const curvePanelColor = (curve: TaggedCurve | undefined) => {
-  switch (curve?.body.type) {
+export const curvePanelColor = (curve: TaggedCurve) => {
+  switch (curve.body.type) {
     case CurveType.water: return Color.curveBlue;
     case CurveType.spread: return Color.curveGreen;
     case CurveType.height: return Color.curvePurple;
-    default: return PanelColor.gray;
   }
 };
 

frontend/error_boundary.tsx

@@ -22,7 +22,7 @@ export class ErrorBoundary extends React.Component<ErrorBoundaryProps, State> {
 
   no = () => this.props.fallback || <Apology />;
 
-  ok = () => this.props.children || <div className={"no-children"} />;
+  ok = () => this.props.children;
 
   render() { return (this.state.hasError ? this.no : this.ok)(); }
 }

frontend/farm_events/__tests__/edit_fe_form_test.tsx

@@ -3,6 +3,11 @@ jest.mock("../../api/crud", () => ({
   overwrite: jest.fn(),
 }));
 
+let mockTzMismatch = false;
+jest.mock("../../devices/timezones/guess_timezone", () => ({
+  timezoneMismatch: () => mockTzMismatch,
+}));
+
 import React from "react";
 import {
   fakeFarmEvent, fakeSequence, fakeRegimen, fakePlant,
@@ -167,6 +172,20 @@ describe("<EditFEForm />", () => {
     expect(wrapper.html()).not.toContain("fa-exclamation-triangle");
   });
 
+  it("doesn't show tz warning", () => {
+    mockTzMismatch = false;
+    const p = fakeProps();
+    const wrapper = mount(<EditFEForm {...p} />);
+    expect(wrapper.html()).not.toContain(Content.FARM_EVENT_TZ_WARNING);
+  });
+
+  it("shows tz warning", () => {
+    mockTzMismatch = true;
+    const p = fakeProps();
+    const wrapper = mount(<EditFEForm {...p} />);
+    expect(wrapper.html()).toContain(Content.FARM_EVENT_TZ_WARNING);
+  });
+
   it("sets a subfield of state.fe", () => {
     const p = fakeProps();
     const i = instance(p);