Class pytest与python类

我编写了以下代码： publisher.py：

import six
from google.api_core.exceptions import AlreadyExists
from google.cloud.pubsub import types

class publisher(object):
    """Publisher Object which has the following attributes
      Attributes:
          pubsub: publisher client
          project_name: Name of project
          topic_name: Name of topic
    """

    def __init__(self, pubsub, project_name, topic_name, batch_settings=(), *args, **kwargs):
        self.pubsub = pubsub
        self.project_name = project_name
        self.topic_name = topic_name
        self.batch_settings = types.BatchSettings(
            *batch_settings)  # Batch setting Pub/Sub accepts a maximum of 1,000 messages in a batch,
        # and the size of a batch can not exceed 10 megabytes

    def _full_project_name(self):
        """Returns Fully Qualified Name of project"""
        return self.pubsub.project_path(self.project_name)

from google.cloud import pubsub
import pytest
from publisher import publisher

PROJECT = 'ProjectTest'
TOPIC_NAME = 'TopicTest'

@pytest.fixture
def pubsub():
    yield pubsub.PublisherClient()


def test_init_value():
    sample_publisher=publisher(pubsub,PROJECT,TOPIC_NAME,())
    assert sample_publisher.project_name == 'ProjectTest'
    assert sample_publisher.topic_name == 'TopicTest'
    assert sample_publisher.pubsub == pubsub
    assert sample_publisher.batch_settings.max_messages == 1000
    assert sample_publisher.batch_settings.max_bytes == 10 * (2 ** 20)
    assert sample_publisher.batch_settings.max_latency == 0.05

def test_init_with_no_values():
    with pytest.raises(Exception) as e_info:
        sample_bad_init = publisher()

def test_full_project_name ():
    sample_publisher = publisher(pubsub, PROJECT, TOPIC_NAME, ())

    assert sample_publisher._full_project_name() == 'projects/ProjectTest'

我写了3个测试，不幸的是第三个测试失败了。 下面是我为测试编写的代码：

test_publisher.py：

import six
from google.api_core.exceptions import AlreadyExists
from google.cloud.pubsub import types

class publisher(object):
    """Publisher Object which has the following attributes
      Attributes:
          pubsub: publisher client
          project_name: Name of project
          topic_name: Name of topic
    """

    def __init__(self, pubsub, project_name, topic_name, batch_settings=(), *args, **kwargs):
        self.pubsub = pubsub
        self.project_name = project_name
        self.topic_name = topic_name
        self.batch_settings = types.BatchSettings(
            *batch_settings)  # Batch setting Pub/Sub accepts a maximum of 1,000 messages in a batch,
        # and the size of a batch can not exceed 10 megabytes

    def _full_project_name(self):
        """Returns Fully Qualified Name of project"""
        return self.pubsub.project_path(self.project_name)

from google.cloud import pubsub
import pytest
from publisher import publisher

PROJECT = 'ProjectTest'
TOPIC_NAME = 'TopicTest'

@pytest.fixture
def pubsub():
    yield pubsub.PublisherClient()


def test_init_value():
    sample_publisher=publisher(pubsub,PROJECT,TOPIC_NAME,())
    assert sample_publisher.project_name == 'ProjectTest'
    assert sample_publisher.topic_name == 'TopicTest'
    assert sample_publisher.pubsub == pubsub
    assert sample_publisher.batch_settings.max_messages == 1000
    assert sample_publisher.batch_settings.max_bytes == 10 * (2 ** 20)
    assert sample_publisher.batch_settings.max_latency == 0.05

def test_init_with_no_values():
    with pytest.raises(Exception) as e_info:
        sample_bad_init = publisher()

def test_full_project_name ():
    sample_publisher = publisher(pubsub, PROJECT, TOPIC_NAME, ())

    assert sample_publisher._full_project_name() == 'projects/ProjectTest'

不幸的是，我目前遇到以下错误，我无法理解：

 line 26, in _full_project_name
    return self.pubsub.project_path(self.project_name)
AttributeError: 'function' object has no attribute 'project_path'

请帮帮忙。

---

非常感谢

夹具的名称应该更改

@pytest.fixture
def google_pubsub():
    yield pubsub.PublisherClient()

您应该将google_pubsub作为参数添加到test_full_project_name（google_pubsub）和test_init_value（google_pubsub）中

在Test_init_值中，您使用从google导入的模块pubsub.cloud import pubsub，有什么问题吗。 Test_init_值通过，因为您在第行中比较了模块（pubsub）