Initial commit

src/app/__tests__/App.tsx

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+import renderer from "react-test-renderer"
+import { Provider } from "react-redux"
+import { MemoryRouter } from "react-router-dom"
+
+import App from ".."
+
+describe("<App />", () => {
+    it("renders", () => {
+        const mockStore = {
+            default: () => null,
+            subscribe: () => null,
+            dispatch: () => null,
+            getState: () => ({ home: () => null }),
+        }
+        const mockRoute = {
+            routes: [
+                {
+                    path: "/",
+                    exact: true,
+                    component: () => (
+                        <div>
+                            <h1>Welcome Home!</h1>
+                        </div>
+                    ),
+                },
+            ],
+        }
+
+        const tree = renderer
+            .create(
+                // @ts-expect-error
+                <Provider store={mockStore}>
+                    <MemoryRouter>
+                        <App route={mockRoute} />
+                    </MemoryRouter>
+                </Provider>
+            )
+            .toJSON()
+
+        expect(tree).toMatchSnapshot()
+    })
+})

src/app/__tests__/__snapshots__/App.tsx.snap

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+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`<App /> renders 1`] = `
+<div
+  className="App"
+>
+  <a
+    className="header"
+    href="/"
+    onClick={[Function]}
+  >
+    <img
+      alt="Logo"
+      role="presentation"
+      src="IMAGE_MOCK"
+    />
+    <h1>
+      <em>
+        REACT COOL STARTER
+      </em>
+    </h1>
+  </a>
+  <hr />
+  <div>
+    <h1>
+      Welcome Home!
+    </h1>
+  </div>
+</div>
+`;