Add unit test for staggered versioning (fixes #2165)

lib/versioner/staggered_test.go

@@ -0,0 +1,84 @@
+// Copyright (C) 2014 The Syncthing Authors.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package versioner
+
+import (
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"testing"
+	"time"
+)
+
+func TestStaggeredVersioningVersionCount(t *testing.T) {
+	if testing.Short() {
+		t.Skip("Test takes some time, skipping.")
+	}
+
+	dir, err := ioutil.TempDir("", "")
+	defer os.RemoveAll(dir)
+	if err != nil {
+		t.Error(err)
+	}
+
+	v := NewStaggered("", dir, map[string]string{"maxAge": "365"})
+	versionDir := filepath.Join(dir, ".stversions")
+
+	path := filepath.Join(dir, "test")
+
+	for i := 1; i <= 3; i++ {
+		f, err := os.Create(path)
+		if err != nil {
+			t.Error(err)
+		}
+		f.Close()
+		v.Archive(path)
+
+		d, err := os.Open(versionDir)
+		if err != nil {
+			t.Error(err)
+		}
+		n, err := d.Readdirnames(-1)
+		if err != nil {
+			t.Error(err)
+		}
+
+		if len(n) != 1 {
+			t.Error("Wrong count")
+		}
+		d.Close()
+
+		time.Sleep(time.Second)
+	}
+	os.RemoveAll(path)
+
+	for i := 1; i <= 3; i++ {
+		f, err := os.Create(path)
+		if err != nil {
+			t.Error(err)
+		}
+		f.Close()
+		v.Archive(path)
+
+		d, err := os.Open(versionDir)
+		if err != nil {
+			t.Error(err)
+		}
+		n, err := d.Readdirnames(-1)
+		if err != nil {
+			t.Error(err)
+		}
+
+		if len(n) != i {
+			t.Error("Wrong count")
+		}
+		d.Close()
+
+		time.Sleep(31 * time.Second)
+	}
+	os.RemoveAll(path)
+}