MM
wranglerwrangler dev
Vunstable_dev()
V
persistTo) then read the migrations files and execute them via better-sliqte3?V
MVMV
i've been waiting years for a truly serverless database. it's even better that it's still running good old SQL and there is not yet another NoSQL API to learn 
VMVM
Ienv.DB.prepare() at the start of the file for 10 will it incur a performance penalty/go to the actual DB?V
KD1PreparedStatement objectVVpersistTo to like testtest/v3/d1/{uuid} where uuid is the id of the database in the .toml file. Not sure how should I access that in the testVIMcreateTestDatabase(): Promise<D1Database>runMigration(db: D1Database, name: string, dir?: string): Promise<void>deleteTestDatabase(db: D1Database): Promise<void>D1Database.prepare, .exec, etc methods on top..state is stored.VVMrunMigration and it mirrors wrangler d1 migrations apply <name> -> that gives you the tools you need to run a series of migrations from within CIVVwrangler d1 migrations apply run in CI's without like logging into cloudflare? because i might just run it as a shell command as of now to make my test setup less brittle and later swithc to the programatic runMigration API once its outMmigrations apply defaults to remote.VVVMMVpreview_database_idVpersistTo to a different temporary path works. In the docs above if an user would run tests with preview_database_id set but not a custom persistTo they would mess up their development databasedescribe("backend json rest api", () => {
let worker;
before(async () => {
worker = await unstable_dev("src/index.ts", {
experimental: { disableExperimentalWarning: true },
});
});
after(async () => {
await worker.stop();
});
// ... actual tests here
});persistTopersistTopersistTopersistToenv.DB.prepare()D1PreparedStatementtest/v3/d1/{uuid}createTestDatabase(): Promise<D1Database>runMigration(db: D1Database, name: string, dir?: string): Promise<void>deleteTestDatabase(db: D1Database): Promise<void>.prepare.exec.staterunMigrationrunMigrationwrangler d1 migrations apply <name>wrangler d1 migrations applymigrations applyOptions:
--local Execute commands/files against a local DB for use with wrangler dev --local [boolean]
--preview Execute commands/files against a preview D1 DB [boolean] [default: false]
--persist-to Specify directory to use for local persistence (you must use --local with this flag) [string]
--experimental-backend Use new experimental DB backend [boolean] [default: false]
--batch-size Number of queries to send in a single batch [number] [default: 10000]describe("backend json rest api", () => {
const testId = randomUUID();
let worker;
before(async () => {
// running migrations on db
execSync(
`export NO_D1_WARNING=true && wrangler d1 migrations apply db --local --persist-to=temp/${testId}`
);
// setting up worker
worker = await unstable_dev("src/index.ts", {
experimental: {
disableExperimentalWarning: true,
},
persistTo: `temp/${testId}`,
});
});
after(async () => {
await worker.stop();
execSync("rm -rf temp");
});
// ... tests here
});preview_database_idpreview_database_id