如果所有部分都失败，Catch2 将再次运行测试

Question

我有以下代码，我运行使用最新 (2.4.0) 版本的 Catch2：

#include "catch.hpp"
#include <iostream>
TEST_CASE("Test") {
    int x = 0;
    SECTION("A") {
            std::cout << "A";
            ++x;
            REQUIRE(x == 1);
    }
    SECTION("B") {
            std::cout << "B";
            ++x;
            REQUIRE(x == 1);
    }
    std::cout << "X\n";
    REQUIRE(x == 1);
}

如果我运行这个，一切都按预期工作，我得到：

AX
BX
=================================================================
All tests passed (4 assertions in 1 test case)

很明显，测试用例是运行两次，每个部分一次。

如果我更改其中一个部分中的断言，比如 REQUIRE(x == 0)，再次，一切都按预期工作，Catch2 运行s 每个部分一次并告诉我第一个失败。但是，如果我在 both 部分中将断言更改为 REQUIRE(x == 0)，结果会令人困惑（我稍微缩短了它）：

A
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
a.out is a Catch v2.4.0 host application.
Run with -? for options
---------------------------------------------------------------------
Test
  A
---------------------------------------------------------------------
test.cpp:10: FAILED:
  REQUIRE( x == 0 )
with expansion:
  1 == 0
B--------------------------------------------------------------------
Test
  B
---------------------------------------------------------------------
test.cpp:15: FAILED:
  REQUIRE( x == 0 )
with expansion:
  1 == 0

X
---------------------------------------------------------------------
Test
---------------------------------------------------------------------
test.cpp:19: FAILED:
  REQUIRE( x == 1 )
with expansion:
  0 == 1
=====================================================================
test cases: 1 | 1 failed
assertions: 3 | 3 failed

考试明明是运行三次，最后一次绕过了两个section。这种行为是预期的吗？我试过查看 Catch2 文档，但找不到任何相关内容。

Answer 1

来自docs：

One leaf section is executed on each run through a TEST_CASE. The other sections are skipped. Next time through the next section is executed, and so on until no new sections are encountered.

所以有问题的测试必须运行 3次。

如果所有部分都失败，Catch2 将再次运行测试

Catch2 runs test once more if all sections fail

c++

catch2