Test dataloader

mbraak · Nov 3, 2024 · 6fdd0c9 · 6fdd0c9
1 parent 3aec9c1
commit 6fdd0c9
Showing 1 changed file with 48 additions and 0 deletions.
diff --git a/src/test/dataLoader.test.ts b/src/test/dataLoader.test.ts
@@ -1,5 +1,23 @@
+import { waitFor } from "@testing-library/dom";
+import { http, HttpResponse } from "msw";
+import { setupServer } from "msw/node";
+
 import DataLoader from "../dataLoader";
 
+const server = setupServer();
+
+afterAll(() => {
+    server.close();
+});
+
+afterEach(() => {
+    server.resetHandlers();
+});
+
+beforeAll(() => {
+    server.listen();
+});
+
 describe("loadFromUrl", () => {
     it("does nothing when urlInfo is empty", () => {
         const loadData = () => null;
@@ -15,4 +33,34 @@ describe("loadFromUrl", () => {
         dataLoader.loadFromUrl(null, null, null);
         expect(triggerEvent).not.toHaveBeenCalled();
     });
+
+    it("parses json when the response is a string", async () => {
+        server.use(
+            http.get(
+                "/test",
+                () =>
+                    new HttpResponse('{ "key1": "value1" }', {
+                        headers: {
+                            "Content-Type": "text/plain",
+                        },
+                    }),
+                {},
+            ),
+        );
+
+        const loadData = jest.fn();
+        const treeElement = document.createElement("div");
+        const triggerEvent = jest.fn();
+
+        const dataLoader = new DataLoader({
+            loadData,
+            treeElement,
+            triggerEvent,
+        });
+        dataLoader.loadFromUrl({ dataType: "text", url: "/test" }, null, null);
+
+        await waitFor(() => {
+            expect(loadData).toHaveBeenCalledWith({ key1: "value1" }, null);
+        });
+    });
 });