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What tools are there for testing and coverage of golang functions?
- WBOYOriginal
- 2024-04-26 21:30:02507browse
Function testing and coverage tools: Testing tools: Go standard library testingtestify/assert coverage tools: go testgopcover
##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)) }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) }
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.
<pre class='brush:go;toolbar:false;'>go test -coverprofile=coverage.out</pre> - 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
The following is a test written using the
go test and testing libraries Example of: <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> In this example, the
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 t.Errorf.
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