You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: server_test.go
    path of file: ./repos/kratos/cmd/kratos/internal/proto/server
    
    the code of the file until where you have to start completion: package server

import "testing"

func Test_serviceName(t *testing.T) {
	type args struct {
		str string
	}
	tests := []struct {
		name string
		args args
		want string
	}{
		{
			name: "serviceName on lowercase words",
			args: args{str: "helloworld"},
			want: "Helloworld",
		},
		{
			name: "serviceName on uppercase words",
			args: args{str: "HELLOWORLD"},
			want: "HELLOWORLD",
		},
		{
			name: "serviceName on lowercase words with spaces",
			args: args{str: "hello world"},
			want: "HelloWorld",
		},
		{
			name: "serviceName on uppercase words with spaces",
			args: args{str: "HELLO WORLD"},
			want: "HELLOWORLD",
		},
		{
			name: "serviceName on Lower Camel Case words",
			args: args{str: "helloWorld"},
			want: "HelloWorld",
		},
		{
			name: "serviceName on Lower Camel Case words",
			args: args{str: "helloWorld"},
			want: "HelloWorld",
		},
		{
			name: "servic
    
func Test_serviceName(t *testing.T) {
	type args struct {
		str string
	}
	tests := []struct {
		name string
		args args
		want string
	}{
		{
			name: "serviceName on lowercase words",
			args: args{str: "helloworld"},
			want: "Helloworld",
		},
		{
			name: "serviceName on uppercase words",
			args: args{str: "HELLOWORLD"},
			want: "HELLOWORLD",
		},
		{
			name: "serviceName on lowercase words with spaces",
			args: args{str: "hello world"},
			want: "HelloWorld",
		},
		{
			name: "serviceName on uppercase words with spaces",
			args: args{str: "HELLO WORLD"},
			want: "HELLOWORLD",
		},
		{
			name: "serviceName on Lower Camel Case words",
			args: args{str: "helloWorld"},
			want: "HelloWorld",
		},
		{
			name: "serviceName on Lower Camel Case words",
			args: args{str: "helloWorld"},
			want: "HelloWorld",
		},
		{
			name: "serviceName on Upper Camel Case words",
			args: args{str: "HelloWorld"},
			want: "HelloWorld",
		},
		{
			name: "serviceName on Upper Camel Case words",
			args: args{str: "hello_world"},
			want: "HelloWorld",
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := serviceName(tt.args.str); got != tt.want {
				t.Errorf("serviceName() = %v, want %v", got, tt.want)
			}
		})
	}
}