text: #include <gtest/gtest.h>
  
  extern "C" {
  #include "reverse_integer.h"
  }
  
  TEST(reverse_integer_test, reverse_7_1) {
      EXPECT_EQ(321, reverse_7_1(123));
      EXPECT_EQ(-321, reverse_7_1(-123));
      EXPECT_EQ(21, reverse_7_1(120));
      EXPECT_EQ(0, reverse_7_1(0));
  }
  