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server.go
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server.go
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package net
import (
"fmt"
"net/http"
"net/http/httptest"
"net/url"
"reflect"
"strings"
"github.com/onsi/ginkgo"
)
type TestRequest struct {
Method string
Path string
Header http.Header
Matcher RequestMatcher
Response TestResponse
}
type RequestMatcher func(*http.Request)
type TestResponse struct {
Body string
Status int
Header http.Header
}
type TestHandler struct {
Requests []TestRequest
CallCount int
}
func (h *TestHandler) AllRequestsCalled() bool {
return h.CallCount == len(h.Requests)
}
func urlQueryContains(container, containee url.Values) bool {
for key, value := range containee {
actualValue, ok := container[key]
if !ok || !reflect.DeepEqual(actualValue, value) {
return false
}
}
return true
}
func (h *TestHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
defer ginkgo.GinkgoRecover()
if len(h.Requests) <= h.CallCount {
h.logError("Index out of range! Test server called too many times. Final Request:", r.Method, r.RequestURI)
return
}
tester := h.Requests[h.CallCount]
h.CallCount++
// match method
if tester.Method != r.Method {
h.logError("Method does not match.\nExpected: %s\nActual: %s", tester.Method, r.Method)
}
// match path
paths := strings.Split(tester.Path, "?")
if paths[0] != r.URL.Path {
h.logError("Path does not match.\nExpected: %s\nActual: %s", paths[0], r.URL.Path)
}
// match query string
if len(paths) > 1 {
actualValues, _ := url.ParseQuery(r.URL.RawQuery)
expectedValues, _ := url.ParseQuery(paths[1])
if !urlQueryContains(actualValues, expectedValues) {
h.logError("Query string does not match.\nExpected: %s\nActual: %s", paths[1], r.URL.RawQuery)
}
}
for key, values := range tester.Header {
key = http.CanonicalHeaderKey(key)
actualValues := strings.Join(r.Header[key], ";")
expectedValues := strings.Join(values, ";")
if key == "Authorization" && !strings.Contains(actualValues, expectedValues) {
h.logError("%s header is not contained in actual value.\nExpected: %s\nActual: %s", key, expectedValues, actualValues)
}
if key != "Authorization" && actualValues != expectedValues {
h.logError("%s header did not match.\nExpected: %s\nActual: %s", key, expectedValues, actualValues)
}
}
// match custom request matcher
if tester.Matcher != nil {
tester.Matcher(r)
}
// set response headers
header := w.Header()
for name, values := range tester.Response.Header {
if len(values) < 1 {
continue
}
header.Set(name, values[0])
}
// write response
w.WriteHeader(tester.Response.Status)
fmt.Fprintln(w, tester.Response.Body)
}
func NewTLSServer(requests []TestRequest) (*httptest.Server, *TestHandler) {
handler := &TestHandler{Requests: requests}
return httptest.NewTLSServer(handler), handler
}
func NewServer(requests []TestRequest) (*httptest.Server, *TestHandler) {
handler := &TestHandler{Requests: requests}
return httptest.NewServer(handler), handler
}
func (h *TestHandler) logError(msg string, args ...interface{}) {
println(fmt.Sprintf(msg, args...))
ginkgo.Fail("failed")
}