Macro test_map 

test_map!() { /* proc-macro */ }

Test helper macro that transforms a handler call to use the __impl_ testable function.

By default, #[substreams::handlers::map] generates a testable __impl_<name> function alongside the WASM export. This macro provides a convenient way to call the testable function in tests.

Example

use substreams::test_map;

#[substreams::handlers::map]
fn map_transfers(blk: eth::Block) -> Result<Events, Error> {
    // handler logic
}

#[test]
fn test_map_transfers() {
    let blk = eth::Block::default();
    let result = test_map!(map_transfers(blk));
    assert!(result.is_ok());
}

The macro transforms test_map!(map_transfers(blk)) into __impl_map_transfers(blk).