definitions = '''
  struct CustomComparator {
    bool operator()(const int& left, const int& right) const {
      return left < right;
    }
  };

  // static size of map only increases in multiples of 8. So including
  // a single double would keep the static size of map the same
  struct SmallSizedCustomComparator {
    double a;
    bool operator()(const int& left, const int& right) const {
      return left < right;
    }
  };

  struct BigSizedCustomComparator {
    double d[1000];
    bool operator()(const int& left, const int& right) const {
      return left < right;
    }
  };

  struct Foo {
    std::map<int, int> m1;
    std::map<int, int, CustomComparator> m2;
    std::map<int, int, SmallSizedCustomComparator> m3;
    std::map<int, int, BigSizedCustomComparator> m4;
  };

  struct Foo4 {
    std::map<int, int, std::function<bool(const int&, const int&)>> m;
  };
'''
includes = ["map", "functional"]

[cases]
  [cases.a]
    oil_skip = 'not implemented for treebuilder v2' # https://github.com/facebookexperimental/object-introspection/issues/314
    param_types = ["const Foo&"]
    setup = '''
      Foo foo;

      for (int i = 0; i < 3; i++) {
        foo.m1[i] = (i * 10);
      }

      for (int i = 0; i < 5; i++) {
        foo.m2[i] = (i * 10);
      }

      for (int i = 0; i < 7; i++) {
        foo.m3[i] = (i * 10);
      }

      for (int i = 0; i < 9; i++) {
        foo.m4[i] = (i * 10);
      }

      return {foo};
    '''
    expect_json = '''[{
      "staticSize":8184,
      "dynamicSize":768,
      "members":[
        {"name":"m1", "staticSize":48, "dynamicSize":96, "length":3, "capacity":3, "elementStaticSize":32},
        {"name":"m2", "staticSize":48, "dynamicSize":160, "length":5, "capacity":5, "elementStaticSize":32},
        {"name":"m3", "staticSize":48, "dynamicSize":224, "length":7, "capacity":7, "elementStaticSize":32},
        {"name":"m4", "staticSize":8040, "dynamicSize":288, "length":9, "capacity":9, "elementStaticSize":32}
      ]}]'''