What tools are there for testing and coverage of golang functions?-Golang-php.cn

What tools are there for testing and coverage of golang functions?

WBOY

Release： 2024-04-26 21:30:02

Original

527 people have browsed it

Function testing and coverage tools: Testing tools: Go standard library testingtestify/assert coverage tools: go testgopcover

What tools are there for testing and coverage of golang functions?

##Go function testing and coverage Tools

In Go development, testing and measuring coverage of functions is crucial to ensure the correctness and reliability of the code. The Go ecosystem provides a variety of mature tools for this purpose.

Testing Tool

Go standard library testing: The Go standard library provides a built-in testing package, using For writing and running test cases. It provides a friendly API that allows you to easily define tests and assertions.
```
import (
  "testing"

  "github.com/stretchr/testify/assert"
)

func TestAdd(t *testing.T) {
  assert.Equal(t, 10, Add(5, 5))
}
```
Copy after login
testify/assert: This is a third-party library that provides a series of assertion functions that allow you to more easily verify expected values against actual results. It provides a clean, readable syntax for writing tests.
```
import "github.com/stretchr/testify/assert"

func TestAdd(t *testing.T) {
  result := Add(5, 5)
  assert.True(t, result == 10)
}
```
Copy after login

Coverage tool

##go test
：go test The command includes a built-in coverage tool that can generate code coverage reports when running tests. It provides fine-grained coverage information by file, package, and function. <div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:go;toolbar:false;'>go test -coverprofile=coverage.out</pre><div class="contentsignin">Copy after login</div></div>
gopcover
: This is a lightweight third-party coverage tool that generates more detailed reports including uncovered lines of code. It can also generate visual coverage reports.
```
gopcover -v -o coverage.html
```
Copy after login

Practical case

The following is a test written using the

go test

and testing libraries Example of: <div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:go;toolbar:false;'>package main import ( "testing" ) func Add(a, b int) int { return a + b } func TestAdd(t *testing.T) { tests := []struct { a, b int expected int }{ {1, 2, 3}, {3, 4, 7}, } for _, test := range tests { t.Run(string(test.a)+"+"+string(test.b), func(t *testing.T) { result := Add(test.a, test.b) if result != test.expected { t.Errorf("Expected %d, got %d", test.expected, result) } }) } }</pre><div class="contentsignin">Copy after login</div></div> In this example, the </p>TestAdd<p> function contains a slice containing the input value and the expected output value. For each test case, the function runs the test and reports any mismatch using <code>t.Errorf.

The above is the detailed content of What tools are there for testing and coverage of golang functions?. For more information, please follow other related articles on the PHP Chinese website!