Trait TestSupport

pub trait TestSupport: Database {
    // Required methods
    fn test_context(
        args: &TestArgs,
    ) -> BoxFuture<'_, Result<TestContext<Self>, Error>>;
    fn cleanup_test(db_name: &str) -> BoxFuture<'_, Result<(), Error>>;
    fn cleanup_test_dbs() -> BoxFuture<'static, Result<Option<usize>, Error>>;
    fn snapshot(
        conn: &mut Self::Connection,
    ) -> BoxFuture<'_, Result<FixtureSnapshot<Self>, Error>>;
}

Required Methods

fn test_context( args: &TestArgs, ) -> BoxFuture<'_, Result<TestContext<Self>, Error>>

Get parameters to construct a Pool suitable for testing.

This Pool instance will behave somewhat specially:

• all handles share a single global semaphore to avoid exceeding the connection limit on the database server.
• each invocation results in a different temporary database.

The implementation may require DATABASE_URL to be set in order to manage databases. The user credentials it contains must have the privilege to create and drop databases.

fn cleanup_test(db_name: &str) -> BoxFuture<'_, Result<(), Error>>

fn cleanup_test_dbs() -> BoxFuture<'static, Result<Option<usize>, Error>>

Cleanup any test databases that are no longer in-use.

Returns a count of the databases deleted, if possible.

The implementation may require DATABASE_URL to be set in order to manage databases. The user credentials it contains must have the privilege to create and drop databases.

fn snapshot( conn: &mut Self::Connection, ) -> BoxFuture<'_, Result<FixtureSnapshot<Self>, Error>>

Take a snapshot of the current state of the database (data only).

This snapshot can then be used to generate test fixtures.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors