hasura-tests

Overview

Per hasura.io/docs/2.0/auth/authorization/quickstart/, Hasura permissions are configured per table, role, and operation (select / insert / update / delete), with row- filter expressions and column-level scopes.

The testable concerns are different from Apollo / Yoga:

• Permission rules are declarative; tests verify the rule produces the expected filter SQL.
• Roles + session variables drive everything; tests inject x-hasura-role + custom claims and assert the response shape.
• Metadata is the source of truth; tests apply a fixture metadata then run queries.

When to use

• Testing a Hasura-backed API where row-level isolation is the primary concern (composes with cross-tenant-data-leak-tests in the qa-multi-tenancy plugin).
• Verifying a new role's permission rules.
• PR review of hasura/metadata/ changes.
• Regression-testing role transitions (user becomes admin, etc.).

How to use

1. Bring up the ephemeral test stack (docker compose -f docker-compose.test.yml up -d) with introspection disabled and the console off.
2. Apply the fixture metadata that declares the permission rules under test, via the /v1/metadata API or hasura metadata apply.
3. Seed per-test rows so no test depends on another test's data.
4. Send queries to /v1/graphql with the admin secret plus an x-hasura-role override (and x-hasura-user-id / custom claims) to act as any role.
5. Assert the response shape: rows are row-filtered to the role, or the failure carries extensions.code = "permission-error" (or affected_rows: 0).
6. Cover the full role x table x operation matrix from a checked-in fixture, and add one smoke test through the real JWT path.
7. Tear the stack down with -v and reset metadata between suites.

Authoring

Test instance setup

# docker-compose.test.yml
services:
  postgres:
    image: postgres:16
    environment:
      POSTGRES_PASSWORD: postgrespassword

  hasura:
    image: hasura/graphql-engine:v2.42.0
    ports: ["8080:8080"]
    depends_on: [postgres]
    environment:
      HASURA_GRAPHQL_DATABASE_URL: postgres://postgres:postgrespassword@postgres:5432/postgres
      HASURA_GRAPHQL_ADMIN_SECRET: test-secret
      HASURA_GRAPHQL_DISABLE_INTROSPECTION_PUBLIC_API: "true"  # per introspection-attack-surface-reference
      HASURA_GRAPHQL_ENABLE_CONSOLE: "false"

docker compose -f docker-compose.test.yml up -d

Apply metadata for test

Per Hasura docs, the metadata API at /v1/metadata:

curl -X POST http://localhost:8080/v1/metadata \
  -H "x-hasura-admin-secret: test-secret" \
  -H "Content-Type: application/json" \
  -d @hasura/metadata-fixture.json

metadata-fixture.json contains the declarative permission rules being tested.

Or via hasura CLI:

hasura migrate apply --endpoint http://localhost:8080 --admin-secret test-secret
hasura metadata apply --endpoint http://localhost:8080 --admin-secret test-secret

Role-based permission tests

Tests act as any role via admin secret + x-hasura-role override, and a full per-role x per-table x per-operation audit is generated from a checked-in fixture. Both patterns - the httpx by-role queries and the parametrized matrix - are in references/permission-matrix-tests.md.

Worked example

Scenario: a new user role must see only its own rows in the user table.

1. In the fixture metadata, give user a select permission on user filtered by id = X-Hasura-User-Id; apply it with hasura metadata apply.
2. POST { user { id name } } to /v1/graphql with headers x-hasura-admin-secret, x-hasura-role: user, x-hasura-user-id: 3.
3. Assert status_code == 200 and every returned row has id == 3 - the row filter held.
4. POST the same query with x-hasura-role: admin (no user-id) and assert len(rows) > 1 - admin is not restricted.

Result: one pair of requests proves the row-filter rule for the restricted role and confirms it does not leak into the admin role.

Running

docker compose -f docker-compose.test.yml up -d
hasura metadata apply --endpoint http://localhost:8080 --admin-secret test-secret
pytest tests/hasura/
docker compose -f docker-compose.test.yml down -v

Parsing results

Hasura returns standard GraphQL response format:

{
  "data": { "user": [{"id": 3, "name": "alice"}] },
  "errors": [{"message": "user.id: permission has failed", "extensions": {"code": "permission-error"}}]
}

Permission failures use extensions.code = "permission-error". Assertion patterns:

def test_user_cannot_update_other_users_row():
    resp = httpx.post(ENDPOINT, headers={
        "x-hasura-admin-secret": "test-secret",
        "x-hasura-role": "user",
        "x-hasura-user-id": "3",
    }, json={
        "query": "mutation { update_user_by_pk(pk_columns: {id: 4}, _set: {name: \"hacked\"}) { id } }"
    })
    body = resp.json()
    # Either errors out OR returns affected_rows: 0 depending on permission setup
    if "errors" in body:
        assert any(
            "permission" in e["extensions"].get("code", "")
            for e in body["errors"]
        )
    else:
        assert body["data"]["update_user_by_pk"] is None  # row was filtered out

CI integration

jobs:
  hasura-permission-matrix:
    runs-on: ubuntu-latest
    services:
      postgres:
        image: postgres:16
        env: { POSTGRES_PASSWORD: postgres }
        ports: [5432]
      hasura:
        image: hasura/graphql-engine:v2.42.0
        env:
          HASURA_GRAPHQL_DATABASE_URL: postgres://postgres:postgres@postgres:5432/postgres
          HASURA_GRAPHQL_ADMIN_SECRET: ci-secret
          HASURA_GRAPHQL_DISABLE_INTROSPECTION_PUBLIC_API: "true"
        ports: [8080]
    steps:
      - uses: actions/checkout@v5
      - run: |
          npm install -g hasura-cli
          hasura migrate apply --endpoint http://localhost:8080 --admin-secret ci-secret
          hasura metadata apply --endpoint http://localhost:8080 --admin-secret ci-secret
      - run: pytest tests/hasura/ --tb=short

Anti-patterns

Limitations

• Doesn't test the auth service. Hasura accepts JWT / webhook / admin-secret claims; verifying the auth-service issues correct claims is separate.
• Permission rules are SQL-translated. Some rules that look right in metadata may produce slow SQL; performance is a separate test concern (use EXPLAIN queries via Hasura's introspection - admin-only).
• Action / Remote-schema testing. Hasura's Actions and Remote Schemas delegate to other services; this skill tests the Hasura -> upstream contract, not the upstream itself.
• Subscription testing requires a long-running connection. Hasura subscriptions use server-sent updates over HTTP/WS; pytest async patterns needed.
• Event-trigger testing. Hasura's webhook event triggers fire on data changes; test via the Webhook receiver, not Hasura itself.

References

• Hasura authorization quickstart: hasura.io/docs/2.0/auth/authorization/quickstart/.
• Hasura metadata API: hasura.io/docs/2.0/api-reference/metadata-api/index/.
• Introspection control: introspection-attack-surface-reference.
• Cross-plugin (tenant isolation): cross-tenant-data-leak-tests, row-level-security-postgres-reference.
• Sibling frameworks: apollo-server-tests, graphql-yoga-tests, mercurius-tests, pothos-builder-tests.