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path: root/tests/unit/auth/test_migrations_indexes.py
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"""Test that indexes are created and removed."""
import pytest

from gn3.auth import db
from gn3.migrations import get_migration, apply_migrations, rollback_migrations
from tests.unit.auth.conftest import (
    apply_single_migration, rollback_single_migration, migrations_up_to)

QUERY = """
SELECT name FROM sqlite_master WHERE type='index' AND tbl_name = ?
AND name= ?
"""

migrations_tables_and_indexes = (
    ("20221110_07_7WGa1-create-role-privileges-table.py", "role_privileges",
     "idx_tbl_role_privileges_cols_role_id"),
    ("20221114_01_n8gsF-create-generic-role-privileges-table.py",
     "generic_role_privileges",
     "idx_tbl_generic_role_privileges_cols_generic_role_id"),
    ("20221114_03_PtWjc-create-group-roles-table.py", "group_roles",
     "idx_tbl_group_roles_cols_group_id"),
    ("20221114_05_hQun6-create-user-roles-table.py", "user_roles",
     "idx_tbl_user_roles_cols_user_id"))

@pytest.mark.unit_test
@pytest.mark.parametrize(
    "migration_file,the_table,the_index", migrations_tables_and_indexes)
def test_index_created(# pylint: disable=[too-many-arguments]
        auth_testdb_path, auth_migrations_dir, backend, migration_file,
        the_table, the_index):
    """
    GIVEN: A database migration
    WHEN: The migration is applied
    THEN: Ensure the given index is created for the provided table
    """
    migration_path=f"{auth_migrations_dir}/{migration_file}"
    older_migrations = migrations_up_to(migration_path, auth_migrations_dir)
    the_migration = get_migration(migration_path)
    query_params = (the_table, the_index)
    apply_migrations(backend, older_migrations)
    with db.connection(auth_testdb_path) as conn, db.cursor(conn) as cursor:
        cursor.execute(QUERY, query_params)
        result_before_migration = cursor.fetchall()
        apply_single_migration(backend, the_migration)
        cursor.execute(QUERY, query_params)
        result_after_migration = cursor.fetchall()

    rollback_migrations(backend, older_migrations + [the_migration])
    assert the_index not in [row[0] for row in result_before_migration], (
        f"Index '{the_index}' was not found for table '{the_table}'.")
    assert (
        len(result_after_migration) == 1
        and result_after_migration[0][0] == the_index), (
        f"Index '{the_index}' was not found for table '{the_table}'.")

@pytest.mark.unit_test
@pytest.mark.parametrize(
    "migration_file,the_table,the_index", migrations_tables_and_indexes)
def test_index_dropped(# pylint: disable=[too-many-arguments]
        auth_testdb_path, auth_migrations_dir, backend, migration_file,
        the_table, the_index):
    """
    GIVEN: A database migration
    WHEN: The migration is rolled-back
    THEN: Ensure the given index no longer exists for the given table
    """
    migration_path=f"{auth_migrations_dir}/{migration_file}"
    older_migrations = migrations_up_to(migration_path, auth_migrations_dir)
    the_migration = get_migration(migration_path)
    query_params = (the_table, the_index)
    apply_migrations(backend, older_migrations)
    with db.connection(auth_testdb_path) as conn, db.cursor(conn) as cursor:
        cursor.execute(QUERY, query_params)
        result_before_migration = cursor.fetchall()
        apply_single_migration(backend, the_migration)
        cursor.execute(QUERY, query_params)
        result_after_migration = cursor.fetchall()
        rollback_single_migration(backend, the_migration)
        cursor.execute(QUERY, query_params)
        result_after_rollback = cursor.fetchall()

    rollback_migrations(backend, older_migrations)
    assert the_index not in [row[0] for row in result_before_migration], (
        f"Index '{the_index}' was found for table '{the_table}' before "
        "migration")
    assert (
        len(result_after_migration) == 1
        and result_after_migration[0][0] == the_index), (
        f"Index '{the_index}' was not found for table '{the_table}'.")
    assert the_index not in [row[0] for row in result_after_rollback], (
        f"Index '{the_index}' was found for table '{the_table}' after "
        "rollback")