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Informations about the package pest-database-isolation-plugin
Pest Database Isolation Plugin
Laravel-focused Pest plugin for isolating concurrent test runs and parallel test workers with Neon branches or local Postgres databases.
Installation
Usage
In tests/Pest.php:
The plugin also exposes a stable run id for isolating other test artifacts created during the same Pest command:
The run id is stored in PEST_TEST_RUN_ID and is shared with Laravel parallel test workers.
The plugin auto-selects a driver. If your DB_URL, DATABASE_URL, or DB_HOST contains neon.tech, it uses the neon driver. Otherwise it uses the pgsql driver.
You can configure the driver explicitly:
Neon Driver
Configure Neon:
The root test branch is created once per Pest run and deleted when the parent test process exits. Laravel parallel workers automatically create expiring child branches from that root branch and point the worker database connection at the child branch.
When the neon driver is selected but NEON_API_KEY, NEON_PROJECT_ID, or NEON_PARENT_BRANCH_ID is missing, the plugin throws an exception instead of silently falling back.
Postgres Driver
The pgsql driver creates a unique database per test run and worker, such as:
Laravel's RefreshDatabase trait then runs migrate:fresh against that worker database normally. The plugin drops the worker database on shutdown.
Because this driver creates and drops databases, it only operates on a local Postgres host (localhost, 127.0.0.1, ::1, or a Unix socket). Pointing it at a remote host throws an exception.
The plugin connects to the postgres maintenance database to create and drop worker databases. Set PEST_TEST_PGSQL_ADMIN_DATABASE to use a different one:
Worktree databases
The package ships a vendor/bin/setup-worktree-database binary for giving each git worktree its own isolated local Postgres database. It reads the connection details from the worktree's .env, creates a database named <base>_wt_<worktree> (worktree name from CURSOR_WORKTREE_NAME, falling back to the directory name), and rewrites .env to point at it.
Call it from your worktree setup, after composer install and before migrating:
The database is created empty (migrate it yourself), recreated fresh on each run, and—like the pgsql test driver—only operates on a local Postgres host.
All versions of pest-database-isolation-plugin with dependencies
illuminate/support Version ^11.0|^12.0|^13.0
illuminate/testing Version ^11.0|^12.0|^13.0
php Version ^8.3
pestphp/pest Version ^4.4.3
pestphp/pest-plugin Version ^4.0.0