Question

我正在尝试在Jython上使用pytest。我一开始就陷入困境。

我已经使用easy_install成功安装了pytest包：

$ ./jython easy_install pytest

当我尝试从此page运行示例时，出现问题。我收到了一个非常长的失败报告，就像下面的报道一样。有没有人知道为什么会这样？

py.test-的jython

=============================测试会话开始=============== =============== platform java1.6.0_37 - Python 2.5.3 - pytest-2.3.2 收集了1件物品

test_sample.py F

=================================== FAILURES =========== ======================== 的 _ __ _ __ _ __ _ __ _ __ _ _ test_answer _ __ _ __ _ __ _ __ _ __ _ __

def test_answer():

  assert func(3) == 5

test_sample.py:5：

self = AssertionError（）

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:

source ='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 =＆lt; _pytest.assertion.newinterpret.DebugInterpreter object at 0x4＆gt; 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 =＆lt; _pytest.assertion.newinterpret.DebugInterpreter object at 0x4＆gt; 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================== =========

Answer 1

Pytest有一个针对jython缺乏AST实现的解决方法，请参阅issue1479。我只是在pytest方面扩展了解决方法，以便在jython-2.5.3上工作。您可以使用以下命令安装pytest候选者：

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

并且至少应该使用“py.test-jython --version”获得版本2.3.4.dev1，并获得使用jython-2.5.3的断言。

在Jython中使用pytest

1 个答案: