feat: allow test cases in multiple suites

backend/alembic/versions/add_test_case_suite_memberships.py

@@ -0,0 +1,94 @@
+"""Add test case suite memberships
+
+Revision ID: add_test_case_suite_memberships
+Revises: add_composite_indexes
+Create Date: 2026-06-05 00:00:00.000000
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+from app.services.migration_helpers import index_exists, table_exists
+
+
+revision = "add_test_case_suite_memberships"
+down_revision = "add_composite_indexes"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    connection = op.get_bind()
+
+    if not table_exists(connection, "test_case_suite_memberships"):
+        op.create_table(
+            "test_case_suite_memberships",
+            sa.Column("id", sa.Integer(), nullable=False),
+            sa.Column("test_case_id", sa.Integer(), nullable=False),
+            sa.Column("test_suite_id", sa.Integer(), nullable=False),
+            sa.Column("section_id", sa.Integer(), nullable=True),
+            sa.Column("order_index", sa.Integer(), nullable=True),
+            sa.Column("is_primary", sa.Boolean(), server_default=sa.false(), nullable=True),
+            sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.func.now()),
+            sa.Column("updated_at", sa.DateTime(timezone=True), nullable=True),
+            sa.ForeignKeyConstraint(["section_id"], ["test_case_sections.id"]),
+            sa.ForeignKeyConstraint(["test_case_id"], ["test_cases.id"]),
+            sa.ForeignKeyConstraint(["test_suite_id"], ["test_suites.id"]),
+            sa.PrimaryKeyConstraint("id"),
+            sa.UniqueConstraint(
+                "test_case_id",
+                "test_suite_id",
+                name="uq_test_case_suite_memberships_case_suite",
+            ),
+        )
+
+    for index_name, columns, unique in (
+        (op.f("ix_test_case_suite_memberships_id"), ["id"], False),
+        (op.f("ix_test_case_suite_memberships_test_case_id"), ["test_case_id"], False),
+        (op.f("ix_test_case_suite_memberships_test_suite_id"), ["test_suite_id"], False),
+        (op.f("ix_test_case_suite_memberships_section_id"), ["section_id"], False),
+    ):
+        if not index_exists(connection, "test_case_suite_memberships", index_name):
+            op.create_index(index_name, "test_case_suite_memberships", columns, unique=unique)
+
+    op.execute(
+        """
+        INSERT INTO test_case_suite_memberships (
+            test_case_id,
+            test_suite_id,
+            section_id,
+            order_index,
+            is_primary
+        )
+        SELECT
+            tc.id,
+            tc.test_suite_id,
+            tc.section_id,
+            COALESCE(tc.order_index, 0),
+            1
+        FROM test_cases tc
+        WHERE tc.test_suite_id IS NOT NULL
+        AND NOT EXISTS (
+            SELECT 1
+            FROM test_case_suite_memberships existing
+            WHERE existing.test_case_id = tc.id
+            AND existing.test_suite_id = tc.test_suite_id
+        )
+        """
+    )
+
+
+def downgrade() -> None:
+    connection = op.get_bind()
+    if not table_exists(connection, "test_case_suite_memberships"):
+        return
+
+    for index_name in (
+        op.f("ix_test_case_suite_memberships_section_id"),
+        op.f("ix_test_case_suite_memberships_test_suite_id"),
+        op.f("ix_test_case_suite_memberships_test_case_id"),
+        op.f("ix_test_case_suite_memberships_id"),
+    ):
+        if index_exists(connection, "test_case_suite_memberships", index_name):
+            op.drop_index(index_name, table_name="test_case_suite_memberships")
+    op.drop_table("test_case_suite_memberships")