denoland-deno/tests/specs/test/workspace/__test__.jsonc

{
  "tests": {
    "root": {
      "args": "test",
      "output": "root.out",
      "exitCode": 1
    },
    "package_a": {
      "args": "test",
      "cwd": "package-a",
      "output": "package_a.out"
    },
    "package_b": {
      "args": "test",
      "cwd": "package-b",
      "output": "package_b.out",
      "exitCode": 1
    }
  }
}