Initial Commit

e2e/foundation-stack-engines/tests/engines-coexist.spec.ts

@@ -0,0 +1,59 @@
+import { expect, test } from "@playwright/test";
+
+/**
+ * Stage-7 closure smoke — proves that the four Stage-7 engines
+ * (`api-graphql-yoga`, `api-graphql-apollo`, `api-ws-bun`,
+ * `api-sse-bun`) coexist on a single Bun.serve host without route
+ * collision, and that GraphQL federation across two plugins works
+ * identically through both engines.
+ */
+
+const FED_QUERY = `
+    query Federated {
+        pluginA
+        pluginB
+        bothA
+        bothB
+    }
+`;
+
+interface GraphqlResponse {
+    readonly data?: Record<string, unknown> | null;
+    readonly errors?: ReadonlyArray<{ readonly message: string }>;
+}
+
+test.describe("foundation-stack-engines — Stage-7 coexistence", () => {
+    test("1. yoga federates GraphQL across plugin-a + plugin-b", async ({
+        request,
+    }) => {
+        const res = await request.post("/graphql/yoga", {
+            data: { query: FED_QUERY, operationName: "Federated" },
+        });
+        expect(res.status()).toBe(200);
+        const body = (await res.json()) as GraphqlResponse;
+        expect(body.errors).toBeUndefined();
+        expect(body.data).toEqual({
+            pluginA: "from plugin-a",
+            pluginB: "from plugin-b",
+            bothA: "A-half-of-both",
+            bothB: "B-half-of-both",
+        });
+    });
+
+    test("2. apollo federates the same SDL across plugin-a + plugin-b", async ({
+        request,
+    }) => {
+        const res = await request.post("/graphql/apollo", {
+            data: { query: FED_QUERY, operationName: "Federated" },
+        });
+        expect(res.status()).toBe(200);
+        const body = (await res.json()) as GraphqlResponse;
+        expect(body.errors).toBeUndefined();
+        expect(body.data).toEqual({
+            pluginA: "from plugin-a",
+            pluginB: "from plugin-b",
+            bothA: "A-half-of-both",
+            bothB: "B-half-of-both",
+        });
+    });
+});