About

A crate that simplifies writing integration tests for ClickHouse, inspired by sqlx.

Getting Started

Add the following environment variables to a .env file:

MIGRATIONS_DIR=".migrations"
CLICKHOUSE_URL="http://localhost:8123"
CLICKHOUSE_DB="db"
CLICKHOUSE_USER="user"
CLICKHOUSE_PASSWORD="password"

Write a test:

#[clickhouse_testing::test]
async fn test1(client: clickhouse_testing::Client) {
    let version = client
        .query("SELECT version()")
        .fetch_one::<String>()
        .await
        .unwrap();

    assert_eq!(version, "25.5.2.47");
}

Guaranties

• Each test creates a unique database in the ClickHouse instance. Unique key: {module_name} + {test_name} + {run_id}.
• Before each test, the new schema is applied to "test_db".
• After successful test execution, "test_db" is deleted. If any error occurs, "test_db" is preserved for investigation.

Enjoy!