feat(package): migrator: mvp

test/package/migrator/test/migrate-to-backward/run.sh

@@ -0,0 +1,53 @@
+#!/bin/dash
+
+HECTIC_NAMESPACE=test-migrate-to-backward
+
+log notice "test case: ${WHITE}migrate to (backward) specific migration"
+
+# Create initial schema
+psql "$DATABASE_URL" -c 'CREATE TABLE sessions (id INTEGER PRIMARY KEY)'
+
+# Initialize migrator
+if ! migrator --db-url "$DATABASE_URL" init; then
+  log error "test failed: ${WHITE}init failed"
+  exit 1
+fi
+
+# Apply all 3 migrations
+if ! migrator --db-url "$DATABASE_URL" migrate up 3; then
+  log error "test failed: ${WHITE}migrate up failed"
+  exit 1
+fi
+
+# Verify all 3 columns exist
+if ! psql -Atc "SELECT user_id, token, expires_at FROM sessions LIMIT 0" "$DATABASE_URL" >/dev/null 2>&1; then
+  log error "test failed: ${WHITE}not all columns added"
+  exit 1
+fi
+
+# Migrate back to first migration
+if ! migrator --db-url "$DATABASE_URL" migrate to 20250101000001-add-user-id; then
+  log error "test failed: ${WHITE}migrate to (backward) failed"
+  exit 1
+fi
+
+# Verify only 1 migration remains
+applied_count=$(psql -Atc "SELECT COUNT(*) FROM hectic.migration" "$DATABASE_URL")
+if [ "$applied_count" != "1" ]; then
+  log error "test failed: ${WHITE}expected 1 migration, got $applied_count"
+  exit 1
+fi
+
+# Verify only user_id exists
+if ! psql -Atc "SELECT user_id FROM sessions LIMIT 0" "$DATABASE_URL" >/dev/null 2>&1; then
+  log error "test failed: ${WHITE}user_id should exist"
+  exit 1
+fi
+
+if psql -Atc "SELECT token FROM sessions LIMIT 0" "$DATABASE_URL" >/dev/null 2>&1; then
+  log error "test failed: ${WHITE}token should be removed"
+  exit 1
+fi
+
+log notice "test passed"
+