Edit

Coming from ScalaTest

If you only use basic ScalaTest features, you should be able to replace usage of org.scalatest.FunSuite with minimal changes like below.

- import org.scalatest.munit.AnyFunSuite
- import org.scalatest.FunSuite
+ import munit.FunSuite

- class MySuite extends FunSuite with BeforeAll with AfterAll {
+ class MySuite extends FunSuite {
  test("name") {
    // unchanged
  }

- ignore("ignored") {
+ test("ignored".ignore) {
    // unchanged
  }

Optionally, replace usage of assert(a == b) with assertEquals(a, b) to improve the error message in failed assertions:

- assert(a == b)
+ assertEquals(a, b)