mirror of
https://github.com/genuinetools/reg.git
synced 2024-08-18 04:50:23 -04:00
337 lines
8.3 KiB
Go
337 lines
8.3 KiB
Go
package mux
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import (
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"bytes"
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"net/http"
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"testing"
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)
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type testMiddleware struct {
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timesCalled uint
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}
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func (tm *testMiddleware) Middleware(h http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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tm.timesCalled++
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h.ServeHTTP(w, r)
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})
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}
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func dummyHandler(w http.ResponseWriter, r *http.Request) {}
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func TestMiddlewareAdd(t *testing.T) {
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router := NewRouter()
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router.HandleFunc("/", dummyHandler).Methods("GET")
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mw := &testMiddleware{}
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router.useInterface(mw)
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if len(router.middlewares) != 1 || router.middlewares[0] != mw {
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t.Fatal("Middleware was not added correctly")
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}
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router.Use(mw.Middleware)
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if len(router.middlewares) != 2 {
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t.Fatal("MiddlewareFunc method was not added correctly")
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}
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banalMw := func(handler http.Handler) http.Handler {
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return handler
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}
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router.Use(banalMw)
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if len(router.middlewares) != 3 {
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t.Fatal("MiddlewareFunc method was not added correctly")
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}
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}
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func TestMiddleware(t *testing.T) {
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router := NewRouter()
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router.HandleFunc("/", dummyHandler).Methods("GET")
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mw := &testMiddleware{}
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router.useInterface(mw)
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rw := NewRecorder()
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req := newRequest("GET", "/")
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// Test regular middleware call
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router.ServeHTTP(rw, req)
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if mw.timesCalled != 1 {
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t.Fatalf("Expected %d calls, but got only %d", 1, mw.timesCalled)
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}
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// Middleware should not be called for 404
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req = newRequest("GET", "/not/found")
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router.ServeHTTP(rw, req)
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if mw.timesCalled != 1 {
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t.Fatalf("Expected %d calls, but got only %d", 1, mw.timesCalled)
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}
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// Middleware should not be called if there is a method mismatch
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req = newRequest("POST", "/")
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router.ServeHTTP(rw, req)
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if mw.timesCalled != 1 {
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t.Fatalf("Expected %d calls, but got only %d", 1, mw.timesCalled)
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}
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// Add the middleware again as function
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router.Use(mw.Middleware)
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req = newRequest("GET", "/")
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router.ServeHTTP(rw, req)
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if mw.timesCalled != 3 {
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t.Fatalf("Expected %d calls, but got only %d", 3, mw.timesCalled)
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}
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}
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func TestMiddlewareSubrouter(t *testing.T) {
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router := NewRouter()
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router.HandleFunc("/", dummyHandler).Methods("GET")
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subrouter := router.PathPrefix("/sub").Subrouter()
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subrouter.HandleFunc("/x", dummyHandler).Methods("GET")
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mw := &testMiddleware{}
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subrouter.useInterface(mw)
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rw := NewRecorder()
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req := newRequest("GET", "/")
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router.ServeHTTP(rw, req)
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if mw.timesCalled != 0 {
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t.Fatalf("Expected %d calls, but got only %d", 0, mw.timesCalled)
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}
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req = newRequest("GET", "/sub/")
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router.ServeHTTP(rw, req)
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if mw.timesCalled != 0 {
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t.Fatalf("Expected %d calls, but got only %d", 0, mw.timesCalled)
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}
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req = newRequest("GET", "/sub/x")
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router.ServeHTTP(rw, req)
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if mw.timesCalled != 1 {
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t.Fatalf("Expected %d calls, but got only %d", 1, mw.timesCalled)
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}
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req = newRequest("GET", "/sub/not/found")
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router.ServeHTTP(rw, req)
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if mw.timesCalled != 1 {
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t.Fatalf("Expected %d calls, but got only %d", 1, mw.timesCalled)
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}
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router.useInterface(mw)
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req = newRequest("GET", "/")
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router.ServeHTTP(rw, req)
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if mw.timesCalled != 2 {
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t.Fatalf("Expected %d calls, but got only %d", 2, mw.timesCalled)
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}
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req = newRequest("GET", "/sub/x")
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router.ServeHTTP(rw, req)
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if mw.timesCalled != 4 {
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t.Fatalf("Expected %d calls, but got only %d", 4, mw.timesCalled)
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}
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}
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func TestMiddlewareExecution(t *testing.T) {
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mwStr := []byte("Middleware\n")
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handlerStr := []byte("Logic\n")
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router := NewRouter()
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router.HandleFunc("/", func(w http.ResponseWriter, e *http.Request) {
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w.Write(handlerStr)
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})
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rw := NewRecorder()
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req := newRequest("GET", "/")
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// Test handler-only call
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router.ServeHTTP(rw, req)
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if bytes.Compare(rw.Body.Bytes(), handlerStr) != 0 {
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t.Fatal("Handler response is not what it should be")
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}
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// Test middleware call
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rw = NewRecorder()
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router.Use(func(h http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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w.Write(mwStr)
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h.ServeHTTP(w, r)
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})
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})
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router.ServeHTTP(rw, req)
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if bytes.Compare(rw.Body.Bytes(), append(mwStr, handlerStr...)) != 0 {
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t.Fatal("Middleware + handler response is not what it should be")
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}
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}
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func TestMiddlewareNotFound(t *testing.T) {
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mwStr := []byte("Middleware\n")
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handlerStr := []byte("Logic\n")
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router := NewRouter()
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router.HandleFunc("/", func(w http.ResponseWriter, e *http.Request) {
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w.Write(handlerStr)
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})
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router.Use(func(h http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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w.Write(mwStr)
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h.ServeHTTP(w, r)
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})
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})
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// Test not found call with default handler
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rw := NewRecorder()
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req := newRequest("GET", "/notfound")
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router.ServeHTTP(rw, req)
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if bytes.Contains(rw.Body.Bytes(), mwStr) {
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t.Fatal("Middleware was called for a 404")
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}
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// Test not found call with custom handler
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rw = NewRecorder()
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req = newRequest("GET", "/notfound")
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router.NotFoundHandler = http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
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rw.Write([]byte("Custom 404 handler"))
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})
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router.ServeHTTP(rw, req)
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if bytes.Contains(rw.Body.Bytes(), mwStr) {
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t.Fatal("Middleware was called for a custom 404")
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}
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}
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func TestMiddlewareMethodMismatch(t *testing.T) {
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mwStr := []byte("Middleware\n")
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handlerStr := []byte("Logic\n")
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router := NewRouter()
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router.HandleFunc("/", func(w http.ResponseWriter, e *http.Request) {
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w.Write(handlerStr)
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}).Methods("GET")
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router.Use(func(h http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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w.Write(mwStr)
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h.ServeHTTP(w, r)
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})
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})
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// Test method mismatch
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rw := NewRecorder()
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req := newRequest("POST", "/")
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router.ServeHTTP(rw, req)
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if bytes.Contains(rw.Body.Bytes(), mwStr) {
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t.Fatal("Middleware was called for a method mismatch")
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}
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// Test not found call
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rw = NewRecorder()
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req = newRequest("POST", "/")
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router.MethodNotAllowedHandler = http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
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rw.Write([]byte("Method not allowed"))
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})
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router.ServeHTTP(rw, req)
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if bytes.Contains(rw.Body.Bytes(), mwStr) {
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t.Fatal("Middleware was called for a method mismatch")
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}
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}
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func TestMiddlewareNotFoundSubrouter(t *testing.T) {
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mwStr := []byte("Middleware\n")
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handlerStr := []byte("Logic\n")
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router := NewRouter()
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router.HandleFunc("/", func(w http.ResponseWriter, e *http.Request) {
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w.Write(handlerStr)
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})
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subrouter := router.PathPrefix("/sub/").Subrouter()
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subrouter.HandleFunc("/", func(w http.ResponseWriter, e *http.Request) {
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w.Write(handlerStr)
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})
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router.Use(func(h http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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w.Write(mwStr)
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h.ServeHTTP(w, r)
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})
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})
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// Test not found call for default handler
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rw := NewRecorder()
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req := newRequest("GET", "/sub/notfound")
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router.ServeHTTP(rw, req)
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if bytes.Contains(rw.Body.Bytes(), mwStr) {
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t.Fatal("Middleware was called for a 404")
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}
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// Test not found call with custom handler
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rw = NewRecorder()
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req = newRequest("GET", "/sub/notfound")
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subrouter.NotFoundHandler = http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
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rw.Write([]byte("Custom 404 handler"))
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})
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router.ServeHTTP(rw, req)
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if bytes.Contains(rw.Body.Bytes(), mwStr) {
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t.Fatal("Middleware was called for a custom 404")
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}
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}
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func TestMiddlewareMethodMismatchSubrouter(t *testing.T) {
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mwStr := []byte("Middleware\n")
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handlerStr := []byte("Logic\n")
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router := NewRouter()
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router.HandleFunc("/", func(w http.ResponseWriter, e *http.Request) {
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w.Write(handlerStr)
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})
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subrouter := router.PathPrefix("/sub/").Subrouter()
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subrouter.HandleFunc("/", func(w http.ResponseWriter, e *http.Request) {
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w.Write(handlerStr)
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}).Methods("GET")
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router.Use(func(h http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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w.Write(mwStr)
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h.ServeHTTP(w, r)
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})
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})
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// Test method mismatch without custom handler
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rw := NewRecorder()
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req := newRequest("POST", "/sub/")
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router.ServeHTTP(rw, req)
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if bytes.Contains(rw.Body.Bytes(), mwStr) {
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t.Fatal("Middleware was called for a method mismatch")
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}
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// Test method mismatch with custom handler
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rw = NewRecorder()
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req = newRequest("POST", "/sub/")
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router.MethodNotAllowedHandler = http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
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rw.Write([]byte("Method not allowed"))
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})
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router.ServeHTTP(rw, req)
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if bytes.Contains(rw.Body.Bytes(), mwStr) {
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t.Fatal("Middleware was called for a method mismatch")
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}
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}
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