Fixing initial scroll-to-bottom in pod logs (#3281)

* Fixing scroll to bottom in pod logs

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

* Fixing invalidDate error if no timestamp provided

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

src/renderer/components/dock/__test__/to-bottom.test.tsx

@@ -0,0 +1,53 @@
+/**
+ * Copyright (c) 2021 OpenLens Authors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+import React from "react";
+import "@testing-library/jest-dom/extend-expect";
+import { fireEvent, render } from "@testing-library/react";
+import { ToBottom } from "../to-bottom";
+import { noop } from "../../../utils";
+
+describe("<ToBottom/>", () => {
+  it("renders w/o errors", () => {
+    const { container } = render(<ToBottom onClick={noop}/>);
+
+    expect(container).toBeInstanceOf(HTMLElement);
+  });
+
+  it("has 'To bottom' label", () => {
+    const { getByText } = render(<ToBottom onClick={noop}/>);
+
+    expect(getByText("To bottom")).toBeInTheDocument();
+  });
+
+  it("has a arrow down icon", () => {
+    const { getByText } = render(<ToBottom onClick={noop}/>);
+
+    expect(getByText("expand_more")).toBeInTheDocument();
+  });
+
+  it("fires an onclick event", () => {
+    const callback = jest.fn();
+    const { getByText } = render(<ToBottom onClick={callback}/>);
+
+    fireEvent.click(getByText("To bottom"));
+    expect(callback).toBeCalled();
+  });
+});