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我正在尝试在 Jython 上使用 pytest。我一开始就被卡住了。

我已经使用 easy_install 成功安装了 pytest 包：

$ ./jython easy_install pytest

当我尝试从此页面运行示例时，出现问题。我收到了一份非常长的故障报告，如下所示。有人知道为什么会这样吗？

py.test-jython

============================= 测试开始================== ============ 平台 java1.6.0_37 -- Python 2.5.3 -- pytest-2.3.2 收集到 1 项

test_sample.py F

==================================== 失败============== ===================== _ __ _ __ _ __ _ __ _ __ _ _ test_answer _ __ _ __ _ __ _ __ _ __ _ __

def test_answer():

  assert func(3) == 5

test_sample.py:5:

自我 = 断言错误（）

def __init__(self, *args):
    BuiltinAssertionError.__init__(self, *args)
    if args:
        try:
            self.msg = str(args[0])
        except py.builtin._sysex:
            raise
        except:
            self.msg = "<[broken __repr__] %s at %0xd>" %(
                args[0].__class__, id(args[0]))
    else:
        f = py.code.Frame(sys._getframe(1))
        try:
            source = f.code.fullsource
            if source is not None:
                try:
                    source = source.getstatement(f.lineno, assertion=True)
                except IndexError:
                    source = None
                else:
                    source = str(source.deindent()).strip()
        except py.error.ENOENT:
            source = None
            # this can also occur during reinterpretation, when the
            # co_filename is set to "<run>".
        if source:

          self.msg = reinterpret(source, f, should_fail=True)

../jython2.5.3/Lib/site-packages/pytest-2.3.2-py2.5.egg/_pytest/assertion/reinterpret.py:32：

源 = 'assert func(3) == 5', frame = should_fail = True

def interpret(source, frame, should_fail=False):
    mod = ast.parse(source)
    visitor = DebugInterpreter(frame)
    try:

      visitor.visit(mod)

../jython2.5.3/Lib/site-packages/pytest-2.3.2-py2.5.egg/_pytest/assertion/newinterpret.py:49：

. . .

self = <_pytest.assertion.newinterpret.DebugInterpreter object at 0x4> name = Name

def visit_Name(self, name):

  explanation, result = self.generic_visit(name)

../jython2.5.3/Lib/site-packages/pytest-2.3.2-py2.5.egg/_pytest/assertion/newinterpret.py:147：

self = <_pytest.assertion.newinterpret.DebugInterpreter object at 0x4> node = Name

def generic_visit(self, node):
    # Fallback when we don't have a special implementation.
    if _is_ast_expr(node):
        mod = ast.Expression(node)
        co = self._compile(mod)
        try:
            result = self.frame.eval(co)
        except Exception:
            raise Failure()
        explanation = self.frame.repr(result)
        return explanation, result
    elif _is_ast_stmt(node):
        mod = ast.Module([node])
        co = self._compile(mod, "exec")
        try:
            self.frame.exec_(co)
        except Exception:
            raise Failure()
        return None, None
    else:

      raise AssertionError("can't handle %s" %(node,))

E AssertionError: 无法处理名称

../jython2.5.3/Lib/site-packages/pytest-2.3.2-py2.5.egg/_pytest/assertion/newinterpret.py:134: AssertionError ============= ============= 1 在 0.55 秒内失败 ===========================

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2 回答 2

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Pytest 有一个解决 jython 缺少 AST 实现的方法，请参阅issue1479。我只是在 pytest 方面扩展了解决方法以在 jython-2.5.3 上工作。您可以使用以下命令安装 pytest 的开发候选人：

pip install -i http://pypi.testrun.org -U pytest

并且应该至少获得带有“py.test-jython --version”的版本 2.3.4.dev1 并获得使用 jython-2.5.3 的断言。

于 2012-11-07T09:08:05.530 回答
2

目前 pytest 不支持 Jython2.5.3，仅适用于 Jython2.5.1。

于 2012-11-07T07:55:43.463 回答