Migrations: Migration for initial privileges

* migrations/auth/20221113_01_7M0hv-enumerate-initial-privileges.py: new
  migration.
* tests/unit/auth/test_migrations_insert_data_into_empty_table.py: test new
  migration.

1 files changed, 76 insertions, 0 deletions

diff --git a/tests/unit/auth/test_migrations_insert_data_into_empty_table.py b/tests/unit/auth/test_migrations_insert_data_into_empty_table.py
new file mode 100644
index 0000000..c89884f
--- /dev/null
+++ b/tests/unit/auth/test_migrations_insert_data_into_empty_table.py
@@ -0,0 +1,76 @@
+"""Test data insertion when migrations are run."""
+
+from contextlib import closing
+
+import pytest
+import sqlite3
+
+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)
+
+test_params = (
+    ("20221113_01_7M0hv-enumerate-initial-privileges.py", "privileges", 19),)
+
+@pytest.mark.unit_test
+@pytest.mark.parametrize(
+    "migration_file,table,row_count", test_params)
+def test_apply_insert(
+        auth_testdb_path, auth_migrations_dir, backend, migration_file,
+        table, row_count):
+    """
+    GIVEN: A database migration
+    WHEN: The migration is applied
+    THEN: Ensure the given number of rows are inserted into the 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)
+    apply_migrations(backend, older_migrations)
+    with closing(sqlite3.connect(auth_testdb_path)) as conn, closing(conn.cursor()) as cursor:
+        query = f"SELECT COUNT(*) FROM {table}"
+        cursor.execute(query)
+        result_before_migration = cursor.fetchall()
+        apply_single_migration(backend, the_migration)
+        cursor.execute(query)
+        result_after_migration = cursor.fetchall()
+
+    rollback_migrations(backend, older_migrations+[the_migration])
+    assert result_before_migration[0][0] == 0, (
+        "Expected empty table before initialisation")
+    assert result_after_migration[0][0] == row_count, (
+        f"Expected {row_count} rows")
+
+@pytest.mark.unit_test
+@pytest.mark.parametrize(
+    "migration_file,table,row_count", test_params)
+def test_rollback_insert(
+        auth_testdb_path, auth_migrations_dir, backend, migration_file,
+        table, row_count):
+    """
+    GIVEN: A database migration
+    WHEN: The migration is applied
+    THEN: Ensure the given number of rows are inserted into the 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)
+    apply_migrations(backend, older_migrations)
+    with closing(sqlite3.connect(auth_testdb_path)) as conn, closing(conn.cursor()) as cursor:
+        query = f"SELECT COUNT(*) FROM {table}"
+        cursor.execute(query)
+        result_before_migration = cursor.fetchall()
+        apply_single_migration(backend, the_migration)
+        cursor.execute(query)
+        result_after_migration = cursor.fetchall()
+        rollback_single_migration(backend, the_migration)
+        cursor.execute(query)
+        result_after_rollback = cursor.fetchall()
+
+    rollback_migrations(backend, older_migrations)
+    assert result_before_migration[0][0] == 0, (
+        "Expected empty table before initialisation")
+    assert result_after_migration[0][0] == row_count, (
+        f"Expected {row_count} rows")
+    assert result_after_rollback[0][0] == 0, (
+        f"Expected empty table after rollback")