python语言的Cucumber示例
时间: 2024-01-11 16:05:48 浏览: 203
Python语言中的Cucumber示例使用了Python的BDD库behave。下面是一个简单的示例:
1. 首先需要安装behave库,在命令行中执行以下命令:
```
pip install behave
```
2. 在项目中创建一个features目录,用于存放测试用例,然后在该目录下创建一个名为example.feature的文件,用于编写测试用例。
```
Feature: Example feature
As a user
I want to see a welcome message
So that I know the application is working
Scenario: User visits homepage
Given I am on the homepage
Then I should see "Welcome to the application"
```
该测试用例描述了一个场景,即用户访问网站首页时应该看到欢迎信息。
3. 接下来,需要编写step definitions,用于将测试用例中的文本转换为可执行的代码。在项目中创建一个名为steps的目录,然后在该目录下创建一个名为example_steps.py的文件,用于编写step definitions。
```
from behave import *
@given('I am on the homepage')
def step_impl(context):
context.browser.get("http://localhost:8000/")
@then('I should see "{text}"')
def step_impl(context, text):
assert text in context.browser.page_source
```
该文件中定义了两个step definitions,分别对应测试用例中的Given和Then。需要注意的是,该示例中使用了selenium库进行网页自动化测试。
4. 最后,在命令行中执行以下命令运行测试用例:
```
behave features/example.feature
```
运行结果应该如下所示:
```
Feature: Example feature # features/example.feature:1
As a user
I want to see a welcome message
So that I know the application is working
Scenario: User visits homepage # features/example.feature:5
Given I am on the homepage # features/steps/example_steps.py:5
Then I should see "Welcome to the application" # features/steps/example_steps.py:9
1 feature passed, 0 failed, 0 skipped
1 scenario passed, 0 failed, 0 skipped
2 steps passed, 0 failed, 0 skipped, 0 undefined
Took 0m0.123s
```
这表明测试用例已经通过了。
以上是一个简单的Python语言中的Cucumber示例,希望能够帮助你了解behave库的基本用法。
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