通过ANT构建脚本进行Python单元测试

我在使用discovery运行Python测试时遇到问题

当通过“python3-m unittest discover”从终端运行时，或者从BBEdit内部运行时，它可以工作，但不能从我的ANT构建脚本运行

错误是：

  File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.7/lib/python3.7/unittest/loader.py", line 346, in discover
    raise ImportError('Start directory is not importable: %r' % start_dir)
ImportError: Start directory is not importable: ' /Users/<username>/Documents/Work/Python/Libraries/Utils/build/test/bin'

测试的ANT目标：

  <target name="-test-python"
          if="has.python.test.source"
          description="Run the Python tests.">
    <exec executable="python3"
          dir="${build.test.dir}/bin"
          osfamily="unix"
          failonerror="true">
      <arg value="-m" />
      <arg value="unittest" />
      <arg value="discover" />
      <arg value="-v" />
      <arg value="-s ${build.test.dir}/bin" />
      <arg value="-p Test*.py" />
      <arg value="-t ${dist.bin.dir}" />
    </exec>
    <echo level="info" message="* Python test/s complete. *" />
  </target>

从终端运行：

Craig-iMac:bin <username>$ python3 -m unittest discover -v -s /Users/<username>/Documents/Work/Python/Libraries/Utils/build/test/bin -p Test*.py
testMe (TestSomething.TestSomething) ...
in TestSomething setUp()
CWD: /Users/<username>/Documents/Work/Python/Libraries/Utils/build/test/bin
in TestSomething testMe()
in TestSomething tearDown()
ok

----------------------------------------------------------------------
Ran 1 test in 0.000s

OK

Craig iMac:bin$python3-m unittest discover-v-s/Users//Documents/Work/Python/Libraries/Utils/build/test/bin-p test*.py
testMe（TestSomething.TestSomething）。。。
在TestSomething setUp（）中
CWD:/Users//Documents/Work/Python/Libraries/Utils/build/test/bin
在TestSomething testMe（）中
在TestSomething tearDown（）中
好啊
----------------------------------------------------------------------
在0.000秒内运行了1次测试
好啊

---

这是一个ANT问题（可能“exec”不是正确的命令）还是我缺少了与Python的unittest有关的内容？

经过多次搜索后，我发现ANT存在一个问题，其中目录与

'<arg value="-s ${build.test.dir}/bin" />' 

这使isdir（）测试失败，导致原始帖子中描述的问题

Craig-iMac:bin <username>$ python3 -m unittest discover -v -s /Users/<username>/Documents/Work/Python/Libraries/Utils/build/test/bin -p Test*.py
testMe (TestSomething.TestSomething) ...
in TestSomething setUp()
CWD: /Users/<username>/Documents/Work/Python/Libraries/Utils/build/test/bin
in TestSomething testMe()
in TestSomething tearDown()
ok

----------------------------------------------------------------------
Ran 1 test in 0.000s

OK

'<arg value="-s ${build.test.dir}/bin" />' 

/Users/me/Documents/Work/Python/Libraries/Utils/build/test/bin/ /Users/me/Documents/Work/Python/Libraries/Utils/build/test/bin