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http_graceful_test.go
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http_graceful_test.go
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// Copyright © 2022 Ory Corp
// SPDX-License-Identifier: Apache-2.0
package graceful
import (
"context"
"errors"
"io/ioutil"
"net/http"
"syscall"
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
type testServer struct {
delay time.Duration
}
func (s *testServer) ServeHTTP(rw http.ResponseWriter, r *http.Request) {
time.Sleep(s.delay)
rw.Write([]byte("hi"))
}
func TestGraceful(t *testing.T) {
t.Run("case=in-time", func(t *testing.T) {
server := WithDefaults(&http.Server{
Addr: "localhost:54931",
Handler: &testServer{delay: time.Second * 3},
})
go func() {
require.NoError(t, Graceful(server.ListenAndServe, server.Shutdown))
}()
res, err := http.Get("http://localhost:54931/")
syscall.Kill(syscall.Getpid(), syscall.SIGINT)
require.NoError(t, err)
assert.Equal(t, http.StatusOK, res.StatusCode)
all, err := ioutil.ReadAll(res.Body)
require.NoError(t, err)
assert.Equal(t, []byte("hi"), all)
})
t.Run("case=timeout during shutdown", func(t *testing.T) {
server := WithDefaults(&http.Server{
Addr: "localhost:54932",
Handler: &testServer{delay: time.Second * 10},
})
done := make(chan error)
go func() {
done <- Graceful(server.ListenAndServe, server.Shutdown)
}()
// Kill the server after 1s
go func() {
time.Sleep(1 * time.Second)
syscall.Kill(syscall.Getpid(), syscall.SIGINT)
}()
_, err := http.Get("http://localhost:54932/")
require.Error(t, err)
require.ErrorIs(t, <-done, context.DeadlineExceeded)
})
t.Run("case=canceled", func(t *testing.T) {
server := WithDefaults(&http.Server{
Addr: "localhost:54933",
Handler: &testServer{delay: 0},
})
ctx, cancel := context.WithCancel(context.Background())
done := make(chan error)
go func() {
done <- GracefulContext(ctx, server.ListenAndServe, server.Shutdown)
}()
_, err := http.Get("http://localhost:54933/")
require.NoError(t, err)
cancel()
require.NoError(t, <-done)
})
t.Run("case=canceled (timeout during shutdown)", func(t *testing.T) {
server := WithDefaults(&http.Server{
Addr: "localhost:54934",
Handler: &testServer{delay: time.Second * 10},
})
ctx, cancel := context.WithCancel(context.Background())
done := make(chan error)
go func() {
done <- GracefulContext(ctx, server.ListenAndServe, server.Shutdown)
}()
// Kill the server after 1s
go func() {
time.Sleep(1 * time.Second)
cancel()
}()
_, err := http.Get("http://localhost:54934/")
require.Error(t, err)
require.ErrorIs(t, <-done, context.DeadlineExceeded)
})
t.Run("case=start-error", func(t *testing.T) {
startErr := errors.New("Test error")
start := func() error { return startErr }
shutdown := func(c context.Context) error {
return nil
}
err := Graceful(start, shutdown)
require.Equal(t, startErr, err)
})
time.Sleep(time.Second) // clean up
}