SCONS：运行目标始终，不仅在更新时

Question

基于 SCONS run target 我创建了一个基本的 SCONS 脚本来构建然后运行我的单元测试：

test = env.Program(
    target='artifacts/unittest',
    source= sources + tests
)

Alias(
    'test',
    test,
    test[0].abspath
)

修改代码后效果很好：

> scons test
scons: Reading SConscript files ...
scons: done reading SConscript files.
scons: Building targets ...
g++ [...]
[Lots of compiler output]
unittest.exe
===============================================================================
All tests passed (22 assertions in 4 test cases)

如果我运行现在再次测试 scons 而不更改代码，它认为不需要再次构建，这是正确的，但也不会运行再次测试：

> scons test
scons: Reading SConscript files ...
scons: done reading SConscript files.
scons: Building targets ...
scons: `test' is up to date.
scons: done building targets.

但是，显然，我希望测试是运行，即使它们没有重建：

> scons test
scons: Reading SConscript files ...
scons: done reading SConscript files.
scons: Building targets ...
scons: `test' is up to date.
scons: done building targets.
unittest.exe
===============================================================================
All tests passed (22 assertions in 4 test cases)

获得此结果的最简单方法是什么？

Answer 1

尝试

env.Pseudo('test')

这应该将目标标记为不生成任何文件，并且可能对您有用。

Answer 2

还看到 AlwaysBuild 用于触发单元测试执行。 “看到它”并不意味着它一定是最佳实践（@bdbaddog 是这里的专家！）。

Answer 3

现在通过使用 AddMethod 连接生成器和命令创建 PseudoBuilder 来修复它：

env.AddMethod(
    lambda env, target, source:
        [
            env.Program(
                target=target,
                source=source
            )[0],
            env.Command(
                target,
                source,
                '.\$TARGET'
            )[0]
        ]
    ,
    'BuildAndRun'
)

env.Alias(
    'test',
    env.BuildAndRun(
        target='artifacts/unittest',
        source= sources + tests
    )
)

到目前为止按预期工作：

> scons test
scons: Reading SConscript files ...
scons: done reading SConscript files.
scons: Building targets ...
g++ [...]
[Lots of compiler output]
.\artifacts\unittest
===============================================================================
All tests passed (22 assertions in 4 test cases)
> scons test
scons: Reading SConscript files ...
scons: done reading SConscript files.
scons: Building targets ...
.\artifacts\unittest
===============================================================================
All tests passed (22 assertions in 4 test cases)

唯一的缺点：命令中的反斜杠让我 windows 依赖。

有什么意见吗？

SCONS：运行目标始终，不仅在更新时

SCONS: Run target always, not only if updated

c++

scons

SCONS：运行 目标始终，不仅在更新时

SCONS: Run target always, not only if updated

c++

scons

SCONS：运行目标始终，不仅在更新时