rdflib-utils: allow to mock additional headers for turtle documents

Author: angelo-v

utils/rdflib/src/test-support/mockResponses.spec.ts

@@ -1,6 +1,51 @@
-import { mockLdpContainer } from "./mockResponses";
+import { mockLdpContainer, mockTurtleDocument } from "./mockResponses";
 
 describe("mockResponses", () => {
+  describe("mockTurtleResponse", () => {
+    it("mocks a turtle document body", async () => {
+      const fetch = jest.fn();
+      mockTurtleDocument(
+        fetch,
+        "http://document.test/",
+        `<> <> "Some content" .`,
+      );
+      const result = await fetch("http://document.test/", {});
+      expect(await result.text()).toEqual('<> <> "Some content" .');
+    });
+
+    it("mocks standard turtle document headers", async () => {
+      const fetch = jest.fn();
+      mockTurtleDocument(
+        fetch,
+        "http://document.test/",
+        `<> <> "Some content" .`,
+      );
+      const result: Response = await fetch("http://document.test/", {});
+      expect(result.headers.get("Content-Type")).toEqual("text/turtle");
+      expect(result.headers.get("Link")).toEqual(
+        '<http://www.w3.org/ns/ldp#Resource>; rel="type"',
+      );
+      expect(result.headers.get("Wac-Allow")).toEqual(
+        'user="read write append control",public="read"',
+      );
+      expect(result.headers.get("Accept-Patch")).toEqual("text/n3");
+    });
+
+    it("mocks additional headers as provided", async () => {
+      const fetch = jest.fn();
+      mockTurtleDocument(
+        fetch,
+        "http://document.test/",
+        `<> <> "Some content" .`,
+        {
+          "X-My-Header": "MyValue",
+        },
+      );
+      const result: Response = await fetch("http://document.test/", {});
+      expect(result.headers.get("X-My-Header")).toEqual("MyValue");
+    });
+  });
+
   describe("mockLdpContainer", () => {
     it("mocks a container without contents", async () => {
       const fetch = jest.fn();

utils/rdflib/src/test-support/mockResponses.ts

@@ -5,8 +5,14 @@ import { when } from "jest-when";
  * @param fetch - A mocked fetch function
  * @param url - The URL to mock
  * @param ttl - The mocked turtle file content
+ * @param additionalHeaders - Additional headers to include in the response
  */
-export function mockTurtleDocument(fetch: jest.Mock, url: string, ttl: string) {
+export function mockTurtleDocument(
+  fetch: jest.Mock,
+  url: string,
+  ttl: string,
+  additionalHeaders: Record<string, string> = {},
+) {
   when(fetch)
     .calledWith(url, expect.anything())
     .mockResolvedValue({
@@ -18,6 +24,7 @@ export function mockTurtleDocument(fetch: jest.Mock, url: string, ttl: string) {
         link: '<http://www.w3.org/ns/ldp#Resource>; rel="type"',
         "wac-allow": 'user="read write append control",public="read"',
         "accept-patch": "text/n3",
+        ...additionalHeaders,
       }),
       text: () => Promise.resolve(ttl),
     } as Response);