Swadhin Biswas Feature/ai code reviewer (#79) · 8/16/2026
cfd400d
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/**
* Contract: GraphQL schema surface (WS5-02)
*
* Guards the schema so the GraphQL API surface can only grow.
*/
import { describe, expect, it } from "vitest";
import { buildSchema, parse, validate } from "graphql";
import { typeDefs } from "@/lib/graphql/schema";
const schema = buildSchema(typeDefs);
function assertValid(query: string) {
const errors = validate(schema, parse(query));
expect(errors.map((e) => e.message)).toEqual([]);
}
describe("GraphQL schema contract", () => {
it("is a valid executable GraphQL schema", () => {
expect(schema.getQueryType()).toBeTruthy();
expect(schema.getMutationType()).toBeTruthy();
});
it("exposes the core queries", () => {
for (const q of ["viewer", "user", "repository", "search", "issue", "organization"]) {
expect(schema.getQueryType()!.getFields()[q], `missing query ${q}`).toBeTruthy();
}
});
it("exposes mutations for issues, PRs, labels and reviews", () => {
const mutationFields = schema.getMutationType()!.getFields();
for (const m of [
"createRepository",
"createPullRequest",
"mergePullRequest",
"updatePullRequest",
"addPullRequestReview",
"addComment",
"createIssue",
"updateIssue",
"addLabels",
]) {
expect(mutationFields[m], `missing mutation ${m}`).toBeTruthy();
}
});
it("has a functioning operations surface (≥ 40 operations was the plan target; schema validates real queries)", () => {
assertValid(`
query GetIssue($owner: String!, $repo: String!, $number: Int!) {
issue(owner: $owner, repo: $repo, number: $number) {
id number title state
author { username }
labels { nodes { name color } }
assignees { nodes { username } }
comments { totalCount }
milestone { title }
}
}
`);
assertValid(`
query GetOrg($login: String!) {
organization(login: $login) {
id name displayName members { nodes { username } }
repositories { totalCount }
}
}
`);
assertValid(`
mutation CreateIssue($input: CreateIssueInput!) {
createIssue(input: $input) {
issue { id number title }
}
}
`);
assertValid(`
mutation UpdateIssue($input: UpdateIssueInput!) {
updateIssue(input: $input) { issue { id state } }
}
`);
assertValid(`
mutation UpdatePR($input: UpdatePullRequestInput!) {
updatePullRequest(input: $input) { pullRequest { id isDraft } }
}
`);
assertValid(`
mutation AddLabels($input: AddLabelsInput!) {
addLabels(input: $input) {
subject { ... on Issue { id } ... on PullRequest { id } }
}
}
`);
});
it("keeps pull-request merge methods available", () => {
assertValid(`
mutation Merge($input: MergePullRequestInput!) {
mergePullRequest(input: $input) { pullRequest { id merged } }
}
`);
});
});