Understand the basic principles of "Pyvows" and its advantages in the Python project
Understand the basic principles of "Pyvows" and its advantages in the Python project
Overview:
When developing the Python project, we often need to write test code to ensure the correctness of the function.Unit test is a common test method. It can ensure that each module can work normally by separating and testing the minimum module of the program.In Python, there are many unit testing frameworks to choose from, one of which is Pyvows.This article will introduce the basic principles of Pyvows and its advantages in the Python project.
1. Basic principles of pyvows:
Pyvows is a Python test framework based on behavioral -driven development (BDD), which is inspired by VOWS (a test framework in JavaScript).Pyvows can write testing by defining descriptions and specifications. During the test execution, it will run these descriptions and specifications one by one, and generate detailed reports on the test results during the test.
The basic principles of pyvows can be summarized as follows:
1. Definition description (VOWS): The behavior and expected results of the test description of the text describe the text.
2. Writing specifications (Specification): Written a specification class and define test cases in it.
3. Run test: Run the Pyvows command to perform the test and generate a test report.
4. Judgment according to the results: Determine whether the test is passed based on the generated test report.
Second, the advantage of Pyvows in the Python project:
1. High readability: Pyvows uses natural language descriptions, so that the test code is easy to read and understand, and it is convenient for developers to understand and maintain.
2. Simple and easy -to -use: Pyvows provides simple API and easy -to -understand test specifications, making it easier and intuitive for writing test cases.
3. Support asynchronous: pyvows are naturally supported by asynchronous programming mode.It provides a built -in asynchronous mechanism, which can easily handle asynchronous calls and recovery functions.
4. Expansion: Pyvows allows developers to write custom test kits and extensions to meet the needs of specific projects.
5. Cross -platform: Pyvows is written in pure Python, which can run on multiple platforms and seamlessly integrated with other Python tools and frameworks.
6. Continuous integration: Pyvows can integrate with continuous integration tools, such as Jenkins, Travis CI, etc., which is convenient for automated testing and reporting.
Example code and configuration (suppose we are testing a simple calculator function):
python
# calculator.py
def add(num1, num2):
return num1 + num2
python
# test_calculator.py
from pyvows import Vows, expect
def add_test(topic):
yield expect(topic).to_equal(4)
@Vows.batch
class CalculatorVows(Vows.Context):
def topic(self):
return add(2, 2)
class AddingNumbers(Vows.Context):
def topic(self, previous_topic):
return previous_topic + 1
def should_equal_5(self, topic):
expect(topic).to_equal(5)
def should_be_greater_than_previous(self, topic, previous_topic):
expect(topic).to_be_greater_than(previous_topic)
if __name__ == "__main__":
Vows.run()
The above example code contains a simple calculator function `ADD` and the corresponding test code.In the test code, we used Pyvows for a series of tests, including whether the output result of the test function was equal to the expected value and whether it was greater than the previous results.
Configuration:
1. Install Pyvows: Run the `PIP Install Pyvows` command in the terminal to install Pyvows.
2. Run test: Run the test in the terminal `python test_calculator.py` to run the test, and generate a report based on the test results.
Summarize:
By understanding the basic principles of Pyvows and mastering related test writing methods, we can more efficiently perform unit testing of the Python project.The characteristics of high readability, easy use of, and asynchronous support of Pyvows make it a powerful test framework that can help us improve the quality of code and development efficiency.
