swadhinbiswas Complete cross-PR dependency workflow with stack apply · 2/19/2026
22a7171
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import { beforeEach, describe, expect, it, vi } from "vitest";
const {
canReadRepoMock,
canWriteRepoMock,
suggestStackOrderMock,
createStackMock,
fakeSchema,
} = vi.hoisted(() => ({
canReadRepoMock: vi.fn(async () => true),
canWriteRepoMock: vi.fn(async () => true),
suggestStackOrderMock: vi.fn(async () => ({ order: ["pr-1", "pr-2"], cycles: [] })),
createStackMock: vi.fn(async () => ({
id: "stack-1",
name: "Dependency stack",
baseBranch: "main",
status: "active",
})),
fakeSchema: {
users: { username: {} },
repositories: { ownerId: {}, name: {}, id: {} },
pullRequests: { id: {}, repositoryId: {}, state: {} },
prStackEntries: { pullRequestId: {}, id: {}, stackId: {} },
prStacks: { repositoryId: {}, id: {} },
} as any,
}));
let mockDb: any;
vi.mock("@/db", () => ({
getDatabase: () => mockDb,
schema: fakeSchema,
}));
vi.mock("@/lib/permissions", () => ({
canReadRepo: canReadRepoMock,
canWriteRepo: canWriteRepoMock,
}));
vi.mock("@/lib/pr-dependencies", () => ({
suggestStackOrder: suggestStackOrderMock,
}));
vi.mock("@/lib/stacks", () => ({
createStack: createStackMock,
}));
import { POST as stackOrderPost, PUT as stackOrderPut } from "@/pages/api/repos/[owner]/[repo]/pulls/stack-order";
function makeDb() {
return {
query: {
users: {
findFirst: vi.fn(async () => ({ id: "owner-1" })),
},
repositories: {
findFirst: vi.fn(async () => ({ id: "repo-1", ownerId: "owner-1", name: "demo" })),
},
pullRequests: {
findMany: vi.fn(async () => [
{ id: "pr-1", repositoryId: "repo-1", number: 1, title: "PR 1", state: "open", baseBranch: "main" },
{ id: "pr-2", repositoryId: "repo-1", number: 2, title: "PR 2", state: "open", baseBranch: "feature-1" },
]),
},
prStackEntries: {
findMany: vi.fn(async () => []),
},
prStacks: {
findMany: vi.fn(async () => []),
},
},
insert: vi.fn(() => ({
values: vi.fn(async () => undefined),
})),
delete: vi.fn(() => ({
where: vi.fn(async () => undefined),
})),
};
}
async function readJson(response: Response): Promise<any> {
return response.json();
}
describe("stack order suggestion route", () => {
beforeEach(() => {
vi.clearAllMocks();
mockDb = makeDb();
canReadRepoMock.mockResolvedValue(true);
canWriteRepoMock.mockResolvedValue(true);
suggestStackOrderMock.mockResolvedValue({ order: ["pr-1", "pr-2"], cycles: [] });
createStackMock.mockResolvedValue({
id: "stack-1",
name: "Dependency stack",
baseBranch: "main",
status: "active",
});
});
it("returns suggested ordering for valid PR IDs", async () => {
const response = await stackOrderPost({
params: { owner: "owner-1", repo: "demo" },
locals: { user: { id: "user-1" } },
request: new Request("http://localhost/api/repos/owner-1/demo/pulls/stack-order", {
method: "POST",
headers: { "content-type": "application/json" },
body: JSON.stringify({ prIds: ["pr-1", "pr-2"] }),
}),
} as any);
const body = await readJson(response);
expect(response.status).toBe(200);
expect(body?.data?.order).toEqual(["pr-1", "pr-2"]);
expect(suggestStackOrderMock).toHaveBeenCalledWith(["pr-1", "pr-2"]);
});
it("rejects PR IDs outside the target repository", async () => {
mockDb.query.pullRequests.findMany.mockResolvedValueOnce([
{ id: "pr-1", repositoryId: "repo-1" },
{ id: "pr-2", repositoryId: "repo-2" },
]);
const response = await stackOrderPost({
params: { owner: "owner-1", repo: "demo" },
locals: { user: { id: "user-1" } },
request: new Request("http://localhost/api/repos/owner-1/demo/pulls/stack-order", {
method: "POST",
headers: { "content-type": "application/json" },
body: JSON.stringify({ prIds: ["pr-1", "pr-2"] }),
}),
} as any);
const body = await readJson(response);
expect(response.status).toBe(400);
expect(body?.error?.code).toBe("BAD_REQUEST");
});
it("applies suggested stack order and creates stack entries", async () => {
const response = await stackOrderPut({
params: { owner: "owner-1", repo: "demo" },
locals: { user: { id: "user-1" } },
request: new Request("http://localhost/api/repos/owner-1/demo/pulls/stack-order", {
method: "PUT",
headers: { "content-type": "application/json" },
body: JSON.stringify({ prIds: ["pr-1", "pr-2"], name: "API cleanup stack" }),
}),
} as any);
const body = await readJson(response);
expect(response.status).toBe(200);
expect(createStackMock).toHaveBeenCalledWith({
repositoryId: "repo-1",
baseBranch: "main",
name: "API cleanup stack",
createdById: "user-1",
});
expect(body?.data?.stackId).toBe("stack-1");
expect(body?.data?.order).toHaveLength(2);
});
it("rejects apply when dependency cycles are detected", async () => {
suggestStackOrderMock.mockResolvedValueOnce({ order: ["pr-1", "pr-2"], cycles: [["pr-1", "pr-2"]] });
const response = await stackOrderPut({
params: { owner: "owner-1", repo: "demo" },
locals: { user: { id: "user-1" } },
request: new Request("http://localhost/api/repos/owner-1/demo/pulls/stack-order", {
method: "PUT",
headers: { "content-type": "application/json" },
body: JSON.stringify({ prIds: ["pr-1", "pr-2"] }),
}),
} as any);
expect(response.status).toBe(400);
expect(createStackMock).not.toHaveBeenCalled();
});
});