traefik/pkg/server/service/loadbalancer/mirror/mirror_test.go
2019-08-29 01:28:05 -07:00

134 lines
3.5 KiB
Go

package mirror
import (
"context"
"net/http"
"net/http/httptest"
"sync/atomic"
"testing"
"github.com/containous/traefik/v2/pkg/safe"
"github.com/stretchr/testify/assert"
)
func TestMirroringOn100(t *testing.T) {
var countMirror1, countMirror2 int32
handler := http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {
rw.WriteHeader(http.StatusOK)
})
pool := safe.NewPool(context.Background())
mirror := New(handler, pool)
err := mirror.AddMirror(http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {
atomic.AddInt32(&countMirror1, 1)
}), 10)
assert.NoError(t, err)
err = mirror.AddMirror(http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {
atomic.AddInt32(&countMirror2, 1)
}), 50)
assert.NoError(t, err)
for i := 0; i < 100; i++ {
mirror.ServeHTTP(httptest.NewRecorder(), httptest.NewRequest(http.MethodGet, "/", nil))
}
pool.Stop()
val1 := atomic.LoadInt32(&countMirror1)
val2 := atomic.LoadInt32(&countMirror2)
assert.Equal(t, 10, int(val1))
assert.Equal(t, 50, int(val2))
}
func TestMirroringOn10(t *testing.T) {
var countMirror1, countMirror2 int32
handler := http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {
rw.WriteHeader(http.StatusOK)
})
pool := safe.NewPool(context.Background())
mirror := New(handler, pool)
err := mirror.AddMirror(http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {
atomic.AddInt32(&countMirror1, 1)
}), 10)
assert.NoError(t, err)
err = mirror.AddMirror(http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {
atomic.AddInt32(&countMirror2, 1)
}), 50)
assert.NoError(t, err)
for i := 0; i < 10; i++ {
mirror.ServeHTTP(httptest.NewRecorder(), httptest.NewRequest(http.MethodGet, "/", nil))
}
pool.Stop()
val1 := atomic.LoadInt32(&countMirror1)
val2 := atomic.LoadInt32(&countMirror2)
assert.Equal(t, 1, int(val1))
assert.Equal(t, 5, int(val2))
}
func TestInvalidPercent(t *testing.T) {
mirror := New(http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {}), safe.NewPool(context.Background()))
err := mirror.AddMirror(nil, -1)
assert.Error(t, err)
err = mirror.AddMirror(nil, 101)
assert.Error(t, err)
err = mirror.AddMirror(nil, 100)
assert.NoError(t, err)
err = mirror.AddMirror(nil, 0)
assert.NoError(t, err)
}
func TestHijack(t *testing.T) {
handler := http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {
rw.WriteHeader(http.StatusOK)
})
pool := safe.NewPool(context.Background())
mirror := New(handler, pool)
var mirrorRequest bool
err := mirror.AddMirror(http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {
hijacker, ok := rw.(http.Hijacker)
assert.Equal(t, true, ok)
_, _, err := hijacker.Hijack()
assert.Error(t, err)
mirrorRequest = true
}), 100)
assert.NoError(t, err)
mirror.ServeHTTP(httptest.NewRecorder(), httptest.NewRequest(http.MethodGet, "/", nil))
pool.Stop()
assert.Equal(t, true, mirrorRequest)
}
func TestFlush(t *testing.T) {
handler := http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {
rw.WriteHeader(http.StatusOK)
})
pool := safe.NewPool(context.Background())
mirror := New(handler, pool)
var mirrorRequest bool
err := mirror.AddMirror(http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {
hijacker, ok := rw.(http.Flusher)
assert.Equal(t, true, ok)
hijacker.Flush()
mirrorRequest = true
}), 100)
assert.NoError(t, err)
mirror.ServeHTTP(httptest.NewRecorder(), httptest.NewRequest(http.MethodGet, "/", nil))
pool.Stop()
assert.Equal(t, true, mirrorRequest)
}