1 files changed, 258 insertions, 1 deletions
diff --git a/plugins/reload/tests/reload_plugin_test.go b/plugins/reload/tests/reload_plugin_test.go
index 3d50030f..c49609f1 100644
--- a/plugins/reload/tests/reload_plugin_test.go
+++ b/plugins/reload/tests/reload_plugin_test.go
@@ -1,14 +1,23 @@
 package tests
 
 import (
+	"io"
+	"io/ioutil"
+	"math/rand"
+	"net/http"
 	"os"
 	"os/signal"
+	"path/filepath"
+	"strconv"
 	"sync"
 	"syscall"
 	"testing"
 	"time"
 
+	"github.com/golang/mock/gomock"
 	"github.com/spiral/endure"
+	"github.com/spiral/errors"
+	"github.com/spiral/roadrunner/v2/mocks"
 	"github.com/spiral/roadrunner/v2/plugins/config"
 	httpPlugin "github.com/spiral/roadrunner/v2/plugins/http"
 	"github.com/spiral/roadrunner/v2/plugins/logger"
@@ -18,6 +27,9 @@ import (
 	"github.com/stretchr/testify/assert"
 )
 
+const testDir string = "unit_tests"
+const hugeNumberOfFiles uint = 5000
+
 func TestReloadInit(t *testing.T) {
 	cont, err := endure.NewContainer(nil, endure.SetLogLevel(endure.DebugLevel))
 	assert.NoError(t, err)
@@ -27,9 +39,21 @@ func TestReloadInit(t *testing.T) {
 		Prefix: "rr",
 	}
 
+	err = os.Mkdir(testDir, 0755)
+	assert.NoError(t, err)
+	defer func() {
+		assert.NoError(t, freeResources(testDir))
+	}()
+
+	controller := gomock.NewController(t)
+	mockLogger := mocks.NewMockLogger(controller)
+
+	mockLogger.EXPECT().Debug("file was created", "path", gomock.Any(), "name", "file.txt", "size", gomock.Any()).Times(2)
+	mockLogger.EXPECT().Info("Resetting http plugin").Times(1)
+
 	err = cont.RegisterAll(
 		cfg,
-		&logger.ZapLogger{},
+		mockLogger,
 		&server.Plugin{},
 		&httpPlugin.Plugin{},
 		&reload.Plugin{},
@@ -80,5 +104,238 @@ func TestReloadInit(t *testing.T) {
 		}
 	}()
 
+	t.Run("ReloadTestInit", reloadTestInit)
+
+	wg.Wait()
+}
+
+func reloadTestInit(t *testing.T) {
+	err := ioutil.WriteFile(filepath.Join(testDir, "file.txt"), //nolint:gosec
+		[]byte{}, 0755)
+	assert.NoError(t, err)
+}
+
+func TestReloadHugeNumberOfFiles(t *testing.T) {
+	cont, err := endure.NewContainer(nil, endure.SetLogLevel(endure.DebugLevel))
+	assert.NoError(t, err)
+
+	cfg := &config.Viper{
+		Path:   "configs/.rr-reload.yaml",
+		Prefix: "rr",
+	}
+
+	// try to remove, skip error
+	assert.NoError(t, freeResources(testDir))
+	err = os.Mkdir(testDir, 0755)
+	assert.NoError(t, err)
+
+	defer func() {
+		assert.NoError(t, freeResources(testDir))
+	}()
+
+	// controller := gomock.NewController(t)
+	// mockLogger := mocks.NewMockLogger(controller)
+	//
+	// mockLogger.EXPECT().Debug("file was created", "path", gomock.Any(), "name", "file.txt", "size", gomock.Any()).Times(2)
+	// mockLogger.EXPECT().Info("Resetting http plugin").Times(1)
+
+	err = cont.RegisterAll(
+		cfg,
+		// mockLogger,
+		&logger.ZapLogger{},
+		&server.Plugin{},
+		&httpPlugin.Plugin{},
+		&reload.Plugin{},
+		&resetter.Plugin{},
+	)
+	assert.NoError(t, err)
+
+	err = cont.Init()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	ch, err := cont.Serve()
+	assert.NoError(t, err)
+
+	sig := make(chan os.Signal, 1)
+	signal.Notify(sig, os.Interrupt, syscall.SIGINT, syscall.SIGTERM)
+
+	wg := &sync.WaitGroup{}
+	wg.Add(1)
+
+	tt := time.NewTimer(time.Second * 160)
+
+	go func() {
+		defer wg.Done()
+		for {
+			select {
+			case e := <-ch:
+				assert.Fail(t, "error", e.Error.Error())
+				err = cont.Stop()
+				if err != nil {
+					assert.FailNow(t, "error", err.Error())
+				}
+			case <-sig:
+				err = cont.Stop()
+				if err != nil {
+					assert.FailNow(t, "error", err.Error())
+				}
+				return
+			case <-tt.C:
+				// timeout
+				err = cont.Stop()
+				if err != nil {
+					assert.FailNow(t, "error", err.Error())
+				}
+				return
+			}
+		}
+	}()
+
+	t.Run("ReloadTestHugeNumberOfFiles", reloadHugeNumberOfFiles)
+	ttt := time.Now()
+	t.Run("ReloadRandomlyChangeFile", randomlyChangeFile)
+	if time.Since(ttt).Seconds() > 140 {
+		t.Fatal("spend too much time on reloading")
+	}
+	t.Run("ReloadHTTPLiveAfterReset", reloadHTTPLiveAfterReset)
+
 	wg.Wait()
 }
+
+func reloadHTTPLiveAfterReset(t *testing.T) {
+	req, err := http.NewRequest("GET", "http://localhost:22388", nil)
+	assert.NoError(t, err)
+
+	r, err := http.DefaultClient.Do(req)
+	assert.NoError(t, err)
+
+	b, err := ioutil.ReadAll(r.Body)
+	assert.NoError(t, err)
+
+	assert.Equal(t, 200, r.StatusCode)
+	assert.Equal(t, "hello world", string(b))
+
+	err = r.Body.Close()
+	assert.NoError(t, err)
+}
+
+func randomlyChangeFile(t *testing.T) {
+	// we know, that directory contains 5000 files (0-4999)
+	// let's try to randomly change it
+	for i := 0; i < 100; i++ {
+		// rand sleep
+		rSleep := rand.Int63n(1000) // nolint:gosec
+		time.Sleep(time.Millisecond * time.Duration(rSleep))
+		rNum := rand.Int63n(int64(hugeNumberOfFiles))                                                                            // nolint:gosec
+		err := ioutil.WriteFile(filepath.Join(testDir, "file_"+strconv.Itoa(int(rNum))+".txt"), []byte("Hello, Gophers!"), 0755) // nolint:gosec
+		assert.NoError(t, err)
+	}
+}
+
+func reloadHugeNumberOfFiles(t *testing.T) {
+	for i := uint(0); i < hugeNumberOfFiles; i++ {
+		assert.NoError(t, makeFile("file_"+strconv.Itoa(int(i))+".txt"))
+	}
+}
+
+func freeResources(path string) error {
+	return os.RemoveAll(path)
+}
+
+func makeFile(filename string) error {
+	return ioutil.WriteFile(filepath.Join(testDir, filename), []byte{}, 0755) //nolint:gosec
+}
+
+func copyDir(src string, dst string) error {
+	src = filepath.Clean(src)
+	dst = filepath.Clean(dst)
+
+	si, err := os.Stat(src)
+	if err != nil {
+		return err
+	}
+	if !si.IsDir() {
+		return errors.E(errors.Str("source is not a directory"))
+	}
+
+	_, err = os.Stat(dst)
+	if err != nil && !os.IsNotExist(err) {
+		return err
+	}
+	if err == nil {
+		return errors.E(errors.Str("destination already exists"))
+	}
+
+	err = os.MkdirAll(dst, si.Mode())
+	if err != nil {
+		return err
+	}
+
+	entries, err := ioutil.ReadDir(src)
+	if err != nil {
+		return err
+	}
+
+	for _, entry := range entries {
+		srcPath := filepath.Join(src, entry.Name())
+		dstPath := filepath.Join(dst, entry.Name())
+
+		if entry.IsDir() {
+			err = copyDir(srcPath, dstPath)
+			if err != nil {
+				return err
+			}
+		} else {
+			// Skip symlinks.
+			if entry.Mode()&os.ModeSymlink != 0 {
+				continue
+			}
+
+			err = copyFile(srcPath, dstPath)
+			if err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+func copyFile(src, dst string) error {
+	in, err := os.Open(src)
+	if err != nil {
+		return errors.E(err)
+	}
+	defer func() {
+		_ = in.Close()
+	}()
+
+	out, err := os.Create(dst)
+	if err != nil {
+		return errors.E(err)
+	}
+	defer func() {
+		_ = out.Close()
+	}()
+
+	_, err = io.Copy(out, in)
+	if err != nil {
+		return errors.E(err)
+	}
+
+	err = out.Sync()
+	if err != nil {
+		return errors.E(err)
+	}
+
+	si, err := os.Stat(src)
+	if err != nil {
+		return errors.E(err)
+	}
+	err = os.Chmod(dst, si.Mode())
+	if err != nil {
+		return errors.E(err)
+	}
+	return nil
+}