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## Development
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To establish a test environment, create an empty Postgres database (e.g. `graphile_build_test`) and set a `TEST_DATABASE_URL` environment variable with your connection string (e.g. `postgres://localhost:5432/graphile_build_test`). Ensure that `psql` is installed locally and then run:
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To establish a test environment, create an empty PostgreSQL database with C collation (required for consistent ordering of strings) and set a `TEST_DATABASE_URL` environment variable with your database connection string.
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```bash
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createdb graphile_test_c --template template0 --lc-collate C
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