C++ 單元測試庫：UnitC++

UnitC++是一個輕量級、只包含頭文件的C++庫用于簡化單元測試。 UnitC++的目的是使它很容易以一種可移植的方式來測試C+ +代碼。

Now you are ready to write the test code. UnitC++ provided some helpful macros for writing tests. Here is a list of them.

TEST_EQUAL(A, B)
TEST_NOT_EQUAL(A, B)
TEST_LESS_THAN(A, B)
TEST_MORE_THAN(A, B)
TEST_APPROX_EQUAL(A, B, TOLERANCE)
TEST_TRUE(A)
TEST_FALSE(A)
TEST_THROWS(FUNCTION, EXCEPTION, ...)

So here is a filled out version of the above example of a test.

#include <UnitCpp/Test.h>

TEST(MyString, length_test)
{
  MyString str("This is a string");
  TEST_EQUAL(str.length(), 16);
  TEST_NOT_EQUAL(str.length(), 17);
  TEST_LESS_THAN(str.length(), 20);
  TEST_MORE_THAN(str.length(), 10);
  TEST_APPROX_EQUAL(str.length(), 15, 1.1); // test the length is within 1.1 of 15
}

TEST(MyString, validity_test)
{
  MyString invalid_string;
  TEST_FALSE(invalid_string.valid());

  MyString valid_string("");
  TEST_TRUE(valid_string.valid());

#ifdef UNITCPP_TEST_THROWS_AVAILABLE
  TEST_THROWS([&](){invalid_string.length();}, MyString::InvalidStringException);
#endif // UNITCPP_TEST_THROWS_AVAILABLE

}

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