Google.Test                     |                     GUnit.GTest
-----------------------------------------------+----------------------------------------------------
#include <gtest/gtest.h>                       | #include <GUnit.h>
                                               |
struct CalcTest : testing::Test {              | GTEST("Calc Test") {
 void SetUp() override {                       |   Calc calc{};
   calc = std::make_unique<Calc>();            |
 }                                             |   // SetUp
                                               |
 void TearDown() override { }                  |   SHOULD("return sum of 2 numbers") {
                                               |     EXPECT(5 == calc->add(4, 1));
 std::unique_ptr<Calc> calc;                   |   }
};                                             |
                                               |   SHOULD("throw if division by 0") {
TEST_F(CalcTest, ShouldReturnSumOf2Numbers) {  |     EXPECT_ANY_THROW(calc->div(42, 0));
  EXPECT_EQ(5, calc->add(4, 1));               |   }
}                                              |
                                               |   // TearDown
TEST_F(CalcTest, ShouldThrowIfDivisionBy0) {   | }
  EXPECT_ANY_THROW(calc->div(42, 0));          |
}                                              |

struct interface {
  virtual ~interface() = default;
  virtual int get() const = 0;
  virtual void foo(int) = 0;
  virtual void bar(int, const std::string&) = 0;
};

               Google.Test                     |                     GUnit.GMock
-----------------------------------------------+----------------------------------------------------
#include <gmock/gmock.h>                       | #include <GUnit.h>
                                               |
struct mock_interface : interface {            |
  MOCK_CONST_METHOD0(get, int(int));           |
  MOCK_METHOD1(foo, void(int));                |
  MOCK_METHOD2(bar, void(int, const string&)); |
};                                             |
                                               |
int main() {                                   | int main() {
  StrictMock<mock_interface> mock{};           |   StrictGMock<interface> mock{};
  EXPECT_CALL(mock, foo(42));                  |   EXPECT_CALL(mock, (foo)(42));
                                               |
  interface& i = mock;                         |   interface& i = mock.object();
  i.foo(42);                                   |   i.foo(42);
}                                              | }

class coffee_maker {
 public:
   coffee_maker(iheater&, ipump&, igrinder&);
   ...
};

               Google.Test                     |                     GUnit.GMake
-----------------------------------------------+--------------------------------------------------
 #include <gtest/gtest.h>                      | #include <GUnit.h>
 #include <gmock/gmock.h>                      |
                                               |
 TEST(CalcTest, ShouldMakeCoffee) {            | GTEST("Calc Test") {
   StrictMock<mock_heater> heater{};           |   auto [sut, mocks] =
   StrictMock<mock_pump> pump{};               |     make<coffee_maker, StrictGMock>();
   StrictMock<mock_grinder> grinder{};         |
   coffee_maker sut{heater, pump, grinder};    |   EXPECT_CALL(mocks.mock<iheater>(), (on)());
                                               |   EXPECT_CALL(mocks.mock<ipump>(), (pump)());
   EXPECT_CALL(heater, on());                  |   EXPECT_CALL(mocks.mock<igrinder>(), (grind)());
   EXPECT_CALL(pump, pump());                  |   EXPECT_CALL(mocks.mock<iheater>(), (off)());
   EXPECT_CALL(grinder, grind());              |
   EXPECT_CALL(heater, off());                 |   sut->brew();
                                               | }
   sut->brew();                                |
 }

#include <GUnit.h>

GSTEPS("Calc*") { // "Calc Addition.Add two numbers"
  auto result = 0;

  Given("I created a calculator with value {n}") = [&](int n) {
    Calculator calc{n};

    Given("I have entered {n} into the calculator") = [&](int n) {
      calc.push(n);
    };

    When("I press add") = [&] {
      result = calc.add();
    };

    Then("The result should be {expected}") = [&](int expected) {
       EXPECT_EQ(expected, result);
    };
  };
}