SDK-3368: Feature flag problem details tests (#2526)

The end-to-end tests need to run against older supported versions of
ESS, not all of which support problem details.

By default, only the response status and title are checked, which are
provided by default against any HTTP response. Problem details and
instance are only checked if the environment variable E2E_TEST_FEATURE_PROBLEM_DETAILS
is set to true.

Author: NSeydoux

e2e/node/resource.test.ts

@@ -19,6 +19,10 @@
 // SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 //
 
+// Assertions are made conditionally on problem details responses because not all
+// servers support this feature.
+/* eslint-disable jest/no-conditional-expect */
+
 import { File as NodeFile, Blob as NodeBlob } from "buffer";
 import {
   jest,
@@ -329,8 +333,10 @@ describe("Authenticated end-to-end", () => {
     expect(error.problemDetails.type).toBe(DEFAULT_TYPE);
     expect(error.problemDetails.title).toBe("Unauthorized");
     expect(error.problemDetails.status).toBe(401);
-    expect(error.problemDetails.detail).toBeDefined();
-    expect(error.problemDetails.instance).toBeDefined();
+    if (env?.features?.PROBLEM_DETAILS === "true") {
+      expect(error.problemDetails.detail).toBeDefined();
+      expect(error.problemDetails.instance).toBeDefined();
+    }
   });
 
   it("can fetch getWellKnownSolid", async () => {
@@ -398,8 +404,10 @@ describe("Authenticated end-to-end", () => {
     expect(error.problemDetails.type).toBe(DEFAULT_TYPE);
     expect(error.problemDetails.title).toBe("Not Acceptable");
     expect(error.problemDetails.status).toBe(406);
-    expect(error.problemDetails.detail).toBeDefined();
-    expect(error.problemDetails.instance).toBeDefined();
+    if (env?.features?.PROBLEM_DETAILS === "true") {
+      expect(error.problemDetails.detail).toBeDefined();
+      expect(error.problemDetails.instance).toBeDefined();
+    }
   });
 
   it("raises error creating a container if service returns an error response", async () => {
@@ -522,16 +530,20 @@ describe("Authenticated end-to-end", () => {
     expect(problemDetails.type).toBe(DEFAULT_TYPE);
     expect(problemDetails.title).toBe("Bad Request");
     expect(problemDetails.status).toBe(400);
-    expect(problemDetails.detail).toBeDefined();
-    expect(problemDetails.instance).toBeDefined();
+    if (env?.features?.PROBLEM_DETAILS === "true") {
+      expect(problemDetails.detail).toBeDefined();
+      expect(problemDetails.instance).toBeDefined();
+    }
   }
 
   function expect405ProblemDetails(problemDetails: ProblemDetails) {
     expect(problemDetails.type).toBe(DEFAULT_TYPE);
     expect(problemDetails.title).toBe("Method Not Allowed");
     expect(problemDetails.status).toBe(405);
-    expect(problemDetails.detail).toBeDefined();
-    expect(problemDetails.instance).toBeDefined();
+    if (env?.features?.PROBLEM_DETAILS === "true") {
+      expect(problemDetails.detail).toBeDefined();
+      expect(problemDetails.instance).toBeDefined();
+    }
   }
 
   function serverToRespondWithAn405Error() {