Cover with test changes in anuraghazra#2770 pull request (anuraghazra…

…#2775)

tests/top-langs.test.js

@@ -123,7 +123,7 @@ describe("Test /api/top-langs", () => {
     );
   });
 
-  it("should render error card on error", async () => {
+  it("should render error card on user data fetch error", async () => {
     const req = {
       query: {
         username: "anuraghazra",
@@ -140,4 +140,25 @@ describe("Test /api/top-langs", () => {
     expect(res.setHeader).toBeCalledWith("Content-Type", "image/svg+xml");
     expect(res.send).toBeCalledWith(renderError(error.errors[0].message));
   });
+
+  it("should render error card on incorrect layout input", async () => {
+    const req = {
+      query: {
+        username: "anuraghazra",
+        layout: ["pie"],
+      },
+    };
+    const res = {
+      setHeader: jest.fn(),
+      send: jest.fn(),
+    };
+    mock.onPost("https://api.github.com/graphql").reply(200, data_langs);
+
+    await topLangs(req, res);
+
+    expect(res.setHeader).toBeCalledWith("Content-Type", "image/svg+xml");
+    expect(res.send).toBeCalledWith(
+      renderError("Something went wrong", "Incorrect layout input"),
+    );
+  });
 });