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Test the 406 fallback in @fedify/express #1000

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Merged
dahlia merged 1 commit into from
Aug 18, 2026
Merged

Test the 406 fallback in @fedify/express #1000

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23 changes: 23 additions & 0 deletions packages/express/src/index.test.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -92,4 +92,27 @@ describe("integrateFederation()", () => {
assert.strictEqual(nextCalled, false);
assert.strictEqual(getBody(), "Hello World");
});

test("responds with 406 when onNotAcceptable is used and no route matches", async () => {
const mockFederation: MockFederation = {
fetch(_request, options) {
const { onNotAcceptable } = options as {
onNotAcceptable: () => Response;
};
return Promise.resolve(onNotAcceptable());
},
};

const middleware = integrateFederation(
mockFederation as never,
() => undefined,
);

const req = createMockRequest();
const { response, ended } = createMockResponse();

middleware(req, response, () => {});
await ended;
assert.strictEqual(response.statusCode, 406);
});
});
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