test add snapshot tests

tests/functional/simple_snapshot_test.go

@@ -0,0 +1,89 @@
+package test
+
+import (
+	"io/ioutil"
+	"os"
+	"testing"
+	"time"
+
+	"github.com/coreos/go-etcd/etcd"
+)
+
+// This test creates a single node and then set a value to it to trigger snapshot
+func TestSimpleSnapshot(t *testing.T) {
+	procAttr := new(os.ProcAttr)
+	procAttr.Files = []*os.File{nil, os.Stdout, os.Stderr}
+	args := []string{"etcd", "-n=node1", "-d=/tmp/node1", "-snapshot=true", "-snapCount=500"}
+
+	process, err := os.StartProcess(EtcdBinPath, append(args, "-f"), procAttr)
+	if err != nil {
+		t.Fatal("start process failed:" + err.Error())
+	}
+
+	time.Sleep(time.Second)
+
+	c := etcd.NewClient(nil)
+
+	c.SyncCluster()
+	// issue first 501 commands
+	for i := 0; i < 501; i++ {
+		result, err := c.Set("foo", "bar", 100)
+
+		if err != nil || result.Key != "/foo" || result.Value != "bar" || result.TTL < 95 {
+			if err != nil {
+				t.Fatal(err)
+			}
+
+			t.Fatalf("Set failed with %s %s %v", result.Key, result.Value, result.TTL)
+		}
+	}
+
+	// wait for a snapshot interval
+	time.Sleep(3 * time.Second)
+
+	snapshots, err := ioutil.ReadDir("/tmp/node1/snapshot")
+
+	if err != nil {
+		t.Fatal("list snapshot failed:" + err.Error())
+	}
+
+	if len(snapshots) != 1 {
+		t.Fatal("wrong number of snapshot :[1/", len(snapshots), "]")
+	}
+
+	if snapshots[0].Name() != "0_503.ss" {
+		t.Fatal("wrong name of snapshot :[0_503.ss/", snapshots[0].Name(), "]")
+	}
+
+	// issue second 501 commands
+	for i := 0; i < 501; i++ {
+		result, err := c.Set("foo", "bar", 100)
+
+		if err != nil || result.Key != "/foo" || result.Value != "bar" || result.TTL < 95 {
+			if err != nil {
+				t.Fatal(err)
+			}
+
+			t.Fatalf("Set failed with %s %s %v", result.Key, result.Value, result.TTL)
+		}
+	}
+
+	// wait for a snapshot interval
+	time.Sleep(3 * time.Second)
+
+	snapshots, err = ioutil.ReadDir("/tmp/node1/snapshot")
+
+	if err != nil {
+		t.Fatal("list snapshot failed:" + err.Error())
+	}
+
+	if len(snapshots) != 1 {
+		t.Fatal("wrong number of snapshot :[1/", len(snapshots), "]")
+	}
+
+	if snapshots[0].Name() != "0_1004.ss" {
+		t.Fatal("wrong name of snapshot :[0_1004.ss/", snapshots[0].Name(), "]")
+	}
+
+	process.Kill()
+}