Question

我刚刚开始学习BDD，因为我想将我的Python Webdriver回归测试用例转换为使用BDD。我想获得BDD，因为它现在在业界广泛使用。

我正在关注一个包含功能和步骤文件的简单计算器教程。当我从Python控制台运行功能文件时，我收到以下错误：要从PyCharm运行它，请选择View - ＆gt;工具Windows - ＆gt;我选择了Python控制台。打开Python控制台窗口然后输入PythonBDD / tests / features / calculator_feature.feature

        >> PythonBDD/tests/features/calculator_feature.feature
Traceback (most recent call last):
  File "<input>", line 1, in <module>
NameError: name 'PythonBDD' is not defined
>>> tests/features/calculator_feature.feature
Traceback (most recent call last):
  File "<input>", line 1, in <module>
NameError: name 'tests' is not defined
>>> $ lettuce
  File "<input>", line 1
    $ lettuce
    ^
SyntaxError: invalid syntax
>>> $lettuce
  File "<input>", line 1
    $lettuce
    ^
SyntaxError: invalid syntax
>>> cd pythonbdd
  File "<input>", line 1
    cd pythonbdd
               ^
SyntaxError: invalid syntax
>>> calculator_feature.feature$ lettuce
  File "<input>", line 1
    calculator_feature.feature$ lettuce
                              ^
SyntaxError: invalid syntax
>>> calculator_feature.feature lettuce
  File "<input>", line 1
    calculator_feature.feature lettuce
                                     ^
SyntaxError: invalid syntax
>>> calculator_feature.feature
Traceback (most recent call last):
  File "<input>", line 1, in <module>
NameError: name 'calculator_feature' is not defined
>>> lettuce calculator_feature.feature
  File "<input>", line 1
    lettuce calculator_feature.feature
                             ^
SyntaxError: invalid syntax
>>> PythonBDD/tests/features/calculator_feature.feature
Traceback (most recent call last):
  File "<input>", line 1, in <module>
NameError: name 'PythonBDD' is not defined

如何运行功能文件？

我的代码树结构如下：

PythonBDD
    -- app
        --_init_.py
        -- calculator.py
    -- tests
        -- features
            -- calculator_feature.features
            -- calculator_steps.py

calculator_steps.py

from lettuce import *
from nose.tools import assert_equals
from app.calculator import Calculator


@step(u'I am using the calculator')
def select_calc(step):
    print ('Attempting to use calculator...')
    world.calc = Calculator()


@step(u'I input "([^"]*)" add "([^"]*)"')
def given_i_input_group1_add_group1(step, x, y):
    world.result = world.calc.add(int(x), int(y))


@step(u'I should see "([^"]+)"')
def result(step, expected_result):
    actual_result = world.result
    assert_equals(int(expected_result), actual_result)

calculator_feature.feature

Feature: As a writer for NetTuts
  I wish to demonstrate
  How easy writing Acceptance Tests
  In Python really is.

  Background:
    Given I am using the calculator

  Scenario: Calculate 2 plus 2 on our calculator
    Given I input "2" add "2"
    Then I should see "4"

Answer 1

只需在测试目录中运行lettuce。

还要注意树结构中calculator_feature.features文件名中的拼写错误。

请注意PyCharm Behave和Lettuce热门BDD框架都有built-in support。

Python生菜BDD功能文件将无法运行 - 如何运行它

1 个答案: