Avoid endless spinner when no readme is provided

dashboard/src/components/PackageHeader/PackageReadme.test.tsx

@@ -6,11 +6,12 @@ import LoadingWrapper from "components/LoadingWrapper/LoadingWrapper";
 import ReactMarkdown from "react-markdown";
 import { HashLink as Link } from "react-router-hash-link";
 import { defaultStore, mountWrapper } from "shared/specs/mountWrapper";
-import PackageReadme from "./PackageReadme";
+import PackageReadme, { IPackageReadmeProps } from "./PackageReadme";
 
-const defaultProps = {
+const defaultProps: IPackageReadmeProps = {
   error: undefined,
   readme: "",
+  isFetching: false,
 };
 
 const kubeActions = { ...actions.kube };
@@ -24,27 +25,46 @@ afterEach(() => {
   actions.kube = { ...kubeActions };
 });
 
-it("behaves as a loading component", () => {
-  const wrapper = mountWrapper(defaultStore, <PackageReadme {...defaultProps} />);
+it("behaves as a loading component if it's fetching with readme", () => {
+  const props: IPackageReadmeProps = {
+    ...defaultProps,
+    isFetching: true,
+    readme: "foo",
+  };
+  const wrapper = mountWrapper(defaultStore, <PackageReadme {...props} />);
+
+  expect(wrapper.find(LoadingWrapper)).toExist();
+});
+
+it("behaves as a loading component if it's fetching without readme", () => {
+  const props: IPackageReadmeProps = {
+    ...defaultProps,
+    isFetching: true,
+    readme: "",
+  };
+  const wrapper = mountWrapper(defaultStore, <PackageReadme {...props} />);
+
   expect(wrapper.find(LoadingWrapper)).toExist();
 });
 
 it("renders the ReactMarkdown content is readme is present", () => {
-  const props = {
+  const props: IPackageReadmeProps = {
     ...defaultProps,
     readme: "# Markdown Readme",
   };
   const wrapper = mountWrapper(defaultStore, <PackageReadme {...props} />);
+
   const component = wrapper.find(ReactMarkdown);
   expect(component.html()).toEqual('<h1 id="markdown-readme">Markdown Readme</h1>');
 });
 
 it("renders the ReactMarkdown content with github flavored markdown (table)", () => {
-  const props = {
+  const props: IPackageReadmeProps = {
     ...defaultProps,
     readme: "|h1|h2|\n|-|-|\n|foo|bar|",
   };
   const wrapper = mountWrapper(defaultStore, <PackageReadme {...props} />);
+
   const component = wrapper.find(ReactMarkdown);
   expect(component.props()).toMatchObject({ children: props.readme });
   expect(component.find("table th").first().text()).toBe("h1");
@@ -61,42 +81,57 @@ it("renders a not found error when error is set", () => {
   expect(wrapper.text()).toContain("No README found");
 });
 
+it("renders a message if no readme is fetched", () => {
+  const props: IPackageReadmeProps = {
+    ...defaultProps,
+    readme: "",
+  };
+  const wrapper = mountWrapper(defaultStore, <PackageReadme {...props} />);
+
+  expect(wrapper.text()).toContain("This package does not contain a README file.");
+});
+
 it("renders an alert when error is set", () => {
-  const wrapper = mountWrapper(defaultStore, <PackageReadme {...defaultProps} error={"Boom!"} />);
+  const props: IPackageReadmeProps = {
+    ...defaultProps,
+    error: "Boom!",
+  };
+  const wrapper = mountWrapper(defaultStore, <PackageReadme {...props} />);
+
   expect(wrapper.text()).toContain("Unable to fetch the package's README: Boom!");
 });
 
 it("renders the ReactMarkdown content adding IDs for the titles", () => {
-  const wrapper = mountWrapper(
-    defaultStore,
-    <PackageReadme {...defaultProps} readme="# _Markdown_ 'Readme_or_not'!" />,
-  );
+  const props: IPackageReadmeProps = {
+    ...defaultProps,
+    readme: "# _Markdown_ 'Readme_or_not'!",
+  };
+  const wrapper = mountWrapper(defaultStore, <PackageReadme {...props} />);
+
   const component = wrapper.find("#markdown-readme_or_not");
   expect(component).toExist();
 });
 
 it("renders the ReactMarkdown ignoring comments", () => {
-  const wrapper = mountWrapper(
-    defaultStore,
-    <PackageReadme
-      {...defaultProps}
-      readme={`<!-- This is a comment -->
-      This is text`}
-    />,
-  );
+  const props: IPackageReadmeProps = {
+    ...defaultProps,
+    readme: `<!-- This is a comment -->
+    This is text`,
+  };
+  const wrapper = mountWrapper(defaultStore, <PackageReadme {...props} />);
+
   const html = wrapper.html();
   expect(html).toContain("This is text");
   expect(html).not.toContain("This is a comment");
 });
 
 it("renders the ReactMarkdown content with hash links", () => {
-  const wrapper = mountWrapper(
-    defaultStore,
-    <PackageReadme
-      {...defaultProps}
-      readme={`[section 1](#section-1)
-      # Section 1`}
-    />,
-  );
+  const props: IPackageReadmeProps = {
+    ...defaultProps,
+    readme: `[section 1](#section-1)
+    # Section 1`,
+  };
+  const wrapper = mountWrapper(defaultStore, <PackageReadme {...props} />);
+
   expect(wrapper.find(Link)).toExist();
 });

dashboard/src/components/PackageHeader/PackageReadme.tsx

@@ -10,12 +10,13 @@ import HeadingRenderer from "../MarkdownRenderer/HeadingRenderer";
 import LinkRenderer from "../MarkdownRenderer/LinkRenderer";
 import TableRenderer from "../MarkdownRenderer/TableRenderer";
 
-interface IPackageReadmeProps {
+export interface IPackageReadmeProps {
   error?: string;
   readme?: string;
+  isFetching?: boolean;
 }
 
-function PackageReadme({ error, readme }: IPackageReadmeProps) {
+function PackageReadme({ error, readme, isFetching }: IPackageReadmeProps) {
   if (error) {
     if (error.toLocaleLowerCase().includes("not found")) {
       return (
@@ -33,10 +34,10 @@ function PackageReadme({ error, readme }: IPackageReadmeProps) {
     <LoadingWrapper
       className="margin-t-xxl"
       loadingText="Fetching application README..."
-      loaded={!!readme}
+      loaded={!isFetching}
     >
-      {readme && (
-        <div className="application-readme">
+      <div className="application-readme">
+        {readme ? (
           <ReactMarkdown
             remarkPlugins={[remarkGfm]}
             components={{
@@ -53,8 +54,10 @@ function PackageReadme({ error, readme }: IPackageReadmeProps) {
           >
             {readme}
           </ReactMarkdown>
-        </div>
-      )}
+        ) : (
+          <p> This package does not contain a README file.</p>
+        )}
+      </div>
     </LoadingWrapper>
   );
 }

dashboard/src/components/PackageHeader/PackageView.tsx

@@ -144,7 +144,11 @@ export default function PackageView() {
             <AvailablePackageDetailExcerpt pkg={selectedPackage.availablePackageDetail} />
           </Column>
           <Column span={9}>
-            <PackageReadme readme={selectedPackage.readme} error={selectedPackage.readmeError} />
+            <PackageReadme
+              readme={selectedPackage.readme}
+              error={selectedPackage.readmeError}
+              isFetching={isFetching}
+            />
             <div className="after-readme-button">
               <Link
                 to={app.apps.new(