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Automated testing and continuous integration using Go language

As software development continues to evolve, automated testing and continuous integration are becoming more and more important. They increase efficiency, reduce errors, and roll out new features faster. In this article, we will introduce how to use Go language for automated testing and continuous integration.

Go language is a fast, efficient and feature-rich programming language. It was originally developed by Google to provide an easy-to-learn language. Go's concise syntax and advantages of concurrent programming make it ideal for automated testing and continuous integration.

Automated Testing
Automated testing is an integral part of the software development process. In this process, test engineers write test cases and then use automation tools to execute these test cases. Automated testing can not only save the time and effort of manual testing, but also greatly reduce the error rate during the testing process.

Generally speaking, we need to choose a testing tool suitable for our project. In Go language, there are many testing frameworks to choose from, the most popular of which is the Go testing package. This package provides a set of functions for writing unit tests and can be easily extended.

The following is an example written using the Go testing package:

package main

import (
    "testing"
)

func TestSum(t *testing.T) {
    total := Sum(2, 3)
    if total != 5 {
        t.Errorf("Sum function test failed, expected: %d, got: %d", 5, total)
    }
}

func TestDiff(t *testing.T) {
    total := Diff(3, 2)
    if total != 1 {
        t.Errorf("Diff function test failed, expected: %d, got: %d", 1, total)
    }
}

func Sum(a, b int) int {
    return a + b
}

func Diff(a, b int) int {
    return a - b
}

In the above code block, we define two test functions: TestSum and TestDiff. These functions use the t.Errorf function provided in the Go testing library to determine whether the test was successful. In this approach, the name of the function must start with "Test" and the object of the function must be "*testing.T".

In the Go language, we can use the usual command to run the test:

go test

This command will find all _test.go files as parameters and run the test functions in them.

Continuous Integration
As software development continues to advance, the size of the project code base is also increasing. In this case, we need an automated tool to ensure the correctness of the new code. This automated tool is continuous integration.

Continuous integration is an automated process that integrates developer code into the main code base. During continuous integration, every time a change is made to the code base, the testing and deployment process is triggered. This process ensures the quality of all code and ensures compatibility of new code with existing code.

In Go language, we can use common continuous integration tools like Travis CI or Jenkins. These tools integrate with our testing framework and version control system, allowing us to test, build, and deploy quickly and efficiently.

Travis CI is a commonly used continuous integration tool. It integrates with version control systems like GitHub and supports multiple languages ​​and testing frameworks. To use Travis CI, we just need to add a .travis.yml file to our project.

The following is an example using Travis CI and Go testing:

language: go

go:
  - 1.13.x

script:
  - go test ./...

In the above example, we have developed a simple application using Travis CI and Go testing. We define a go version and run the tests using the "go test" command.

Summary
Automated testing and continuous integration are very important for software development. These processes increase productivity, reduce errors, and enable new features to be rolled out faster. In Go language, we can use Go testing package and continuous integration tools to build and test our applications quickly and efficiently.

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