使用gotests生成表驱动测试

使用gotests可以很方便的生成表驱动测试代码，表驱动测试的具体内容，请参考go官方的wiki。下面是具体的使用方法。

安装

使用下面命令进行安装

go install github.com/cweill/gotests/gotests@latest

如果是go1.16之前的版本，可以使用命令 go get -u github.com/cweill/gotests/...来进行安装。

使用

gotests支持的参数如下：

Usage of C:\Users\czyt\go\bin\gotests.exe:
  -all
        generate tests for all functions and methods
  -excl string
        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
  -nosubtests
        disable generating tests using the Go 1.7 subtests feature
  -only string
        regexp. generate tests for functions and methods that match only. Takes precedence over -all
  -parallel
        enable generating parallel subtests
  -template string
        optional. Specify custom test code templates, e.g. testify. This can also be set via environment variable GOTESTS_TEMPLATE
  -template_dir string
        optional. 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_params string
        read external parameters to template by json with stdin
  -template_params_file string
        read external parameters to template by json with file
  -w    write output to (test) files instead of stdout

小试牛刀

新建一个go文件，命名为greeter.go

package greeter

import "fmt"

func Greeter(user string) string {
	return fmt.Sprintf("您好啊！%s",user)
}

使用gotests -all -w greeter.go 生成测试文件greeter_test.go，文件内容如下：

package greeter

import "testing"

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