April 2020

Expect_test_helpers_async is a library intended for use with expect
tests, i.e. the let%expect_test syntax. It has functionality that
cannot go in Expect_test_helpers_base and
Expect_test_helpers_kernel due to its use of Async, in particular
file i/o, and running external processes.

Expect_test_helpers_async uses both Unix and Async. It is not
suitable for use in JavaScript.