gotests自动生成测试用例

发现一个自动生成测试用例的工具gotests。

gotests
https://github.com/cweill/gotests

下载

go get -u github.com/cweill/gotests/...

举个栗子：
add.go

package main

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

同目录下执行

gotests -all -w ./add.go

同目录自动生成 add_test.go文件

package main

import "testing"

func TestAdd(t *testing.T) {
    
	type args struct {
    
		a int
		b int
	}
	tests := []struct {
    
		name string
		args args
		want int
	}{
    
		// TODO: Add test cases.
	}
	for _, tt := range tests {
    
		t.Run(tt.name, func(t *testing.T) {
    
			if got := Add(tt.args.a, tt.args.b); got != tt.want {
    
				t.Errorf("Add() = %v, want %v", got, tt.want)
			}
		})
	}
}

填充用例数据：

package main

import "testing"

func TestAdd(t *testing.T) {
    
	type args struct {
    
		a int
		b int
	}
	tests := []struct {
    
		name string
		args args
		want int
	}{
    
		// TODO: Add test cases.
		{
    
			"a=3,b=1",
			args{
    3, 1},
			4,
		},
		{
    
			"a=3,b=-1",
			args{
    3, -1},
			4,
		},
	}
	for _, tt := range tests {
    
		t.Run(tt.name, func(t *testing.T) {
    
			if got := Add(tt.args.a, tt.args.b); got != tt.want {
    
				t.Errorf("Add() = %v, want %v", got, tt.want)
			}
		})
	}
}

完成。接下来执行go test .就可以跑用例啦

其他参数说明：

$ gotests [options] PATH …
-all generate tests for all functions and methods

-excl regexp. generate tests for functions and methods that don’t match. Takes precedence over -only, -exported, and -all
-exported generate tests for exported functions and methods. Takes precedence over -only and -all
-i print test inputs in error messages
-only regexp. generate tests for functions and methods that match only.Takes precedence over -all
-nosubtests disable subtest generation when >= Go 1.7
-parallel enable parallel subtest generation when >= Go 1.7.
-w write output to (test) files instead of stdout
-template_dir Path to a directory containing custom test
code templates. Takes precedence over -template. This can also be set via environment variable GOTESTS_TEMPLATE_DIR
-template Specify custom test code templates, e.g. testify. This can also be set via environment variable GOTESTS_TEMPLATE
-template_params_file read external parameters to template by json
with file
-template_params read external parameters to template by json
with stdin