Unit testing 用模板golang进行单元测试
我有一个非常简单的http处理程序,为about.html模板提供服务Unit testing 用模板golang进行单元测试,unit-testing,http,testing,go,httphandler,Unit Testing,Http,Testing,Go,Httphandler,我有一个非常简单的http处理程序,为about.html模板提供服务 func AboutPage(w http.ResponseWriter, r *http.Request, ps httprouter.Params) { template, err := template.ParseFiles("templates/about.html") if err != nil { logfile.ErrorMsg(fmt.Sprint(err.Error
func AboutPage(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
template, err := template.ParseFiles("templates/about.html")
if err != nil {
logfile.ErrorMsg(fmt.Sprint(err.Error()))
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
template.Execute(w, nil)
}
它工作正常,但当我想运行此单元测试时:
func getRequest(t testing.TB, url string) *http.Request {
req, err := http.NewRequest("GET", url, nil)
if err != nil {
t.Fatal(err)
}
return req
}
func TestAboutPage(t *testing.T) {
r := getRequest(t, "/about")
rw := httptest.NewRecorder()
AboutPage(rw, r, httprouter.Params{})
}
程序因以下原因崩溃:
go test
--- FAIL: TestAboutPage (0.00s)
panic: runtime error: invalid memory address or nil pointer dereference [recovered]
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x20 pc=0x41123b4]
goroutine 19 [running]:
panic(0x4417520, 0xc42000c0b0)
/usr/local/go/src/runtime/panic.go:500 +0x1a1
testing.tRunner.func1(0xc42009e180)
/usr/local/go/src/testing/testing.go:579 +0x25d
panic(0x4417520, 0xc42000c0b0)
/usr/local/go/src/runtime/panic.go:458 +0x243
html/template.(*Template).escape(0x0, 0x0, 0x0)
/usr/local/go/src/html/template/template.go:79 +0x44
html/template.(*Template).Execute(0x0, 0x52683b0, 0xc42007a7c0, 0x0, 0x0, 0xc420077290, 0x1)
/usr/local/go/src/html/template/template.go:101 +0x2f
github.com/engineerbeard/engineerbeard.com/httpHandlers.AboutPage(0x45ee2e0, 0xc42007a7c0, 0xc4200ee0f0, 0xc42004bf38, 0x0, 0x0)
/Users/dbubel/gowork/src/github.com/engineerbeard/engineerbeard.com/httpHandlers/handler.go:122 +0xbd
github.com/engineerbeard/engineerbeard.com/httpHandlers.TestAboutPage(0xc42009e180)
/Users/dbubel/gowork/src/github.com/engineerbeard/engineerbeard.com/httpHandlers/handlers_test.go:26 +0x15c
testing.tRunner(0xc42009e180, 0x449b320)
/usr/local/go/src/testing/testing.go:610 +0x81
created by testing.(*T).Run
/usr/local/go/src/testing/testing.go:646 +0x2ec
exit status 2
FAIL github.com/engineerbeard/engineerbeard.com/httpHandlers 0.012s
如果我用一个简单的Fprintf(w,“foo”)替换template.execute(),测试运行良好。那么,如何使用模板进行单元测试呢?好的,我想我已经弄明白了,我正在使用
_ "github.com/mattn/go-sqlite3"
作为一种进口。我在那个目录下运行了go install,现在它运行…如果在这行模板中添加绝对路径,可以解决这个问题,err:=template.ParseFiles(“AbsolutePathftheFile”)可能是包名和变量名之间的冲突。尝试将变量从
template
更改为t
,例如t,err:=template.ParseFiles(“templates/about.html”)。。。t、 执行(w,nil)
。结果相同。这与模板有关。完全执行。您使用的是哪个版本的Go?我在go1.7.1上运行了你的代码,一切正常。@Danbond我在1.7上。你能发送你以前运行的代码吗?你用“go test”运行它?这将是我的下一个问题-我很高兴你把它整理好了!