try switching to better-sqlite3

Author: kentcdodds

prisma/seed.ts

@@ -17,7 +17,7 @@ async function seed() {
 	console.time(`🌱 Database has been seeded`)
 
 	console.time('🧹 Cleaned up the database...')
-	await cleanupDb(prisma)
+	await cleanupDb()
 	console.timeEnd('🧹 Cleaned up the database...')
 
 	const totalUsers = 5

tests/db-utils.ts

@@ -2,6 +2,7 @@ import fs from 'node:fs'
 import { faker } from '@faker-js/faker'
 import { type PrismaClient } from '@prisma/client'
 import bcrypt from 'bcryptjs'
+import Database from 'better-sqlite3'
 import { UniqueEnforcer } from 'enforce-unique'
 
 const uniqueUsernameEnforcer = new UniqueEnforcer()
@@ -115,45 +116,63 @@ export async function img({
 	}
 }
 
-export async function cleanupDb(prisma: PrismaClient) {
-	const tables = await prisma.$queryRaw<
-		{ name: string }[]
-	>`SELECT name FROM sqlite_master WHERE type='table' AND name NOT LIKE 'sqlite_%' AND name NOT LIKE '_prisma_migrations';`
+let _migrationSqls: Array<Array<string>> | undefined
+async function getMigrationSqls() {
+	if (_migrationSqls) return _migrationSqls
+
+	const migrationSqls: Array<Array<string>> = []
+	const migrationPaths = (await fs.promises.readdir('prisma/migrations'))
+		.filter((dir) => dir !== 'migration_lock.toml')
+		.map((dir) => `prisma/migrations/${dir}/migration.sql`)
+
+	for (const path of migrationPaths) {
+		const sql = await fs.promises.readFile(path, 'utf8')
+		const statements = sql
+			.split(';')
+			.map((statement) => statement.trim())
+			.filter(Boolean)
+		migrationSqls.push(statements)
+	}
+
+	_migrationSqls = migrationSqls
+
+	return migrationSqls
+}
+
+export async function cleanupDb() {
+	const db = new Database(process.env.DATABASE_URL!.replace('file:', ''))
 
 	try {
 		// Disable FK constraints to avoid relation conflicts during deletion
-		await prisma.$executeRawUnsafe(`PRAGMA foreign_keys = OFF`)
+		db.exec('PRAGMA foreign_keys = OFF')
+
+		// Get all table names
+		const tables = db
+			.prepare(
+				`
+			SELECT name FROM sqlite_master 
+			WHERE type='table' AND name NOT LIKE 'sqlite_%' AND name NOT LIKE '_prisma_migrations'
+		`,
+			)
+			.all() as { name: string }[]
 
 		// Delete tables except the ones that are excluded above
-		await prisma.$transaction([
-			...tables.map(({ name }) =>
-				prisma.$executeRawUnsafe(`DROP TABLE IF EXISTS "${name}"`),
-			),
-		])
-
-		const migrationPaths = fs
-			.readdirSync('prisma/migrations')
-			.filter((dir) => dir !== 'migration_lock.toml')
-			.map((dir) => `prisma/migrations/${dir}/migration.sql`)
-
-		// Run each migration
-		for (const path of migrationPaths) {
-			const sql = fs.readFileSync(path, 'utf8')
-			const statements = sql
-				.split(';')
-				.map((statement) => statement.trim())
-				.filter(Boolean)
+		for (const { name } of tables) {
+			db.exec(`DROP TABLE IF EXISTS "${name}"`)
+		}
 
+		// Get migration SQLs and run each migration
+		const migrationSqls = await getMigrationSqls()
+		for (const statements of migrationSqls) {
 			// Run each sql statement in the migration
-			await prisma.$transaction([
-				...statements.map((statement) =>
-					prisma.$executeRawUnsafe(`${statement}`),
-				),
-			])
+			db.transaction(() => {
+				for (const statement of statements) {
+					db.exec(statement)
+				}
+			})()
 		}
-	} catch (error) {
-		console.error('Error cleaning up database:', error)
 	} finally {
-		await prisma.$executeRawUnsafe(`PRAGMA foreign_keys = ON`)
+		db.exec('PRAGMA foreign_keys = ON')
+		db.close()
 	}
 }

tests/setup/db-setup.ts

@@ -15,8 +15,7 @@ beforeAll(async () => {
 // we *must* use dynamic imports here so the process.env.DATABASE_URL is set
 // before prisma is imported and initialized
 afterEach(async () => {
-	const { prisma } = await import('#app/utils/db.server.ts')
-	await cleanupDb(prisma)
+	await cleanupDb()
 })
 
 afterAll(async () => {