如果对这样的输出不满意的话，还可以自定义输出格式，通过如下：
| Fatal assertion | Nonfatal assertion | Verifies |
| ASSERT_PRED_FORMAT1(pred_format1, val1);` | EXPECT_PRED_FORMAT1(pred_format1, val1); | pred_format1(val1) is successful |
| ASSERT_PRED_FORMAT2(pred_format2, val1, val2); | EXPECT_PRED_FORMAT2(pred_format2, val1, val2); | pred_format2(val1, val2) is successful |
| ... | ... | ... |
用法示例：
| testing::AssertionResult AssertFoo(const char* m_expr, const char* n_expr, const char* k_expr, int m, int n, int k) { if (Foo(m, n) == k) return testing::AssertionSuccess(); testing::Message msg; msg << m_expr << " 和 " << n_expr << " 的最大公约数应该是：" << Foo(m, n) << " 而不是：" << k_expr; return testing::AssertionFailure(msg); } TEST(AssertFooTest, HandleFail) { EXPECT_PRED_FORMAT3(AssertFoo, 3, 6, 2); } |
失败时，输出信息：
error: 3 和 6 的最大公约数应该是：3 而不是：2
是不是更温馨呢，呵呵。
九、浮点型检查
| Fatal assertion | Nonfatal assertion | Verifies |
| ASSERT_FLOAT_EQ(expected, actual); | EXPECT_FLOAT_EQ(expected, actual); | the two float values are almost equal |
| ASSERT_DOUBLE_EQ(expected, actual); | EXPECT_DOUBLE_EQ(expected, actual); | the two double values are almost equal |
对相近的两个数比较：
| Fatal assertion | Nonfatal assertion | Verifies |
| ASSERT_NEAR(val1, val2, abs_error); | EXPECT_NEAR(val1, val2, abs_error); | the difference between val1 and val2 doesn't exceed the given absolute error |
同时，还可以使用：
| EXPECT_PRED_FORMAT2(testing::FloatLE, val1, val2); EXPECT_PRED_FORMAT2(testing::DoubleLE, val1, val2); |
十、Windows HRESULT assertions
| Fatal assertion | Nonfatal assertion | Verifies |
| ASSERT_HRESULT_SUCCEEDED(expression); | EXPECT_HRESULT_SUCCEEDED(expression); | expression is a success HRESULT |
| ASSERT_HRESULT_FAILED(expression); | EXPECT_HRESULT_FAILED(expression); | expression is a failure HRESULT |
例如：
| CComPtr shell; ASSERT_HRESULT_SUCCEEDED(shell.CoCreateInstance(L"Shell.Application")); CComVariant empty; ASSERT_HRESULT_SUCCEEDED(shell->ShellExecute(CComBSTR(url), empty, empty, empty, empty)); |
