includes = ["optional", "cstdint", "vector"]
[cases]
  [cases.uint64_empty]
    param_types = ["std::optional<std::uint64_t>&"]
    setup = "return std::nullopt;"
    expect_json = '''
    [
      {
        "staticSize": 16,
        "dynamicSize": 0,
        "exclusiveSize": 16,
        "length": 0,
        "capacity": 1,
        "elementStaticSize": 8
      }
    ]
    '''
  [cases.uint64_present]
    param_types = ["std::optional<std::uint64_t>&"]
    setup = "return 64;"
    expect_json = '''
    [
      {
        "staticSize": 16,
        "dynamicSize": 0,
        "exclusiveSize": 16,
        "length": 1,
        "capacity": 1,
        "elementStaticSize": 8
      }
    ]
    '''
  [cases.vector_empty]
    param_types = ["std::optional<std::vector<std::uint64_t>>&"]
    setup = "return std::nullopt;"
    expect_json = '''
    [
      {
        "staticSize": 32,
        "dynamicSize": 0,
        "exclusiveSize": 32,
        "length": 0,
        "capacity": 1,
        "elementStaticSize": 24
      }
    ]
    '''
  [cases.vector_present]
    param_types = ["std::optional<std::vector<std::uint64_t>>&"]
    setup = "return {{{1,2,3,4,5}}};"
    expect_json = '''
    [
      {
        "staticSize": 32,
        "dynamicSize": 40,
        "exclusiveSize": 8,
        "length": 1,
        "capacity": 1,
        "elementStaticSize": 24,
        "members": [
          {
            "staticSize": 24,
            "dynamicSize": 40,
            "exclusiveSize": 64,
            "length": 5
          }
        ]
      }
    ]
    '''