Migrations: Create `group_users` table

* migrations/auth/20221117_02_fmuZh-create-group-users-table.py: new migration
* tests/unit/auth/test_migrations_create_tables.py: test new migration
* tests/unit/auth/test_migrations_indexes.py: test new migration

1 files changed, 25 insertions, 0 deletions

diff --git a/migrations/auth/20221117_02_fmuZh-create-group-users-table.py b/migrations/auth/20221117_02_fmuZh-create-group-users-table.py
new file mode 100644
index 0000000..92885ef
--- /dev/null
+++ b/migrations/auth/20221117_02_fmuZh-create-group-users-table.py
@@ -0,0 +1,25 @@
+"""
+Create 'group_users' table.
+"""
+
+from yoyo import step
+
+__depends__ = {'20221117_01_RDlfx-modify-group-roles-add-group-role-id'}
+
+steps = [
+    step(
+        """
+        CREATE TABLE IF NOT EXISTS group_users(
+            group_id TEXT NOT NULL,
+            user_id TEXT NOT NULL UNIQUE, -- user can only be in one group
+            PRIMARY KEY(group_id, user_id)
+        ) WITHOUT ROWID
+        """,
+        "DROP TABLE IF EXISTS group_users"),
+    step(
+        """
+        CREATE INDEX IF NOT EXISTS tbl_group_users_cols_group_id
+        ON group_users(group_id)
+        """,
+        "DROP INDEX IF EXISTS tbl_group_users_cols_group_id")
+]