《python测试开发实战》基于pytest基础部分实例1-Hello

要求

实现如下命令行接口

 python 1hello.py -husage: 1hello.py [-h] [-n NAME]Say hellooptional arguments:  -h, --help            show this help message and exit  -n NAME, --name NAME  Name to greet

• 没有参数时输出Hello, World!

$python 1hello.py Hello, World!

• 有参数时输出Hello, 人名!

$ python 1hello.py -n BobHello, Bob!$ python 1hello.py --name BobHello, Bob!

参考资料

• python测试等IT技术支持qq群：630011153 144081101
• 代码地址 https://github.com/china-testing/python-testing-examples/tree/master/pytest_projects 建议拷贝到浏览器访问
• 本文涉及的python测试开发库 谢谢点赞！
• 本文相关海量书籍下载

参考答案

import argparse# --------------------------------------------------def get_args():    """Get the command-line arguments"""    parser = argparse.ArgumentParser(description='Say hello')    parser.add_argument('-n', '--name', default='World', help='Name to greet')    return parser.parse_args()# --------------------------------------------------def main():    """Make a jazz noise here"""    args = get_args()    print('Hello, ' + args.name + '!')# --------------------------------------------------if __name__ == '__main__':    main()

pytest

#!/usr/bin/env python3"""tests for 1hello.py"""import osfrom subprocess import getstatusoutput, getoutputprg = './1hello.py'# --------------------------------------------------def test_exists():    """exists"""    assert os.path.isfile(prg)# --------------------------------------------------def test_runnable():    """Runs using python3"""    out = getoutput(f'python3 {prg}')    assert out.strip() == 'Hello, World!'# --------------------------------------------------def test_executable():    """Says 'Hello, World!' by default"""    out = getoutput(prg)    assert out.strip() == 'Hello, World!'# --------------------------------------------------def test_usage():    """usage"""    for flag in ['-h', '--help']:        rv, out = getstatusoutput(f'{prg} {flag}')        assert rv == 0        assert out.lower().startswith('usage')# --------------------------------------------------def test_input():    """test for input"""    for val in ['Universe', 'Multiverse']:        for option in ['-n', '--name']:            rv, out = getstatusoutput(f'{prg} {option} {val}')            assert rv == 0            assert out.strip() == f'Hello, {val}!'

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