1 files changed, 47 insertions, 0 deletions
diff --git a/weed/election/cluster_test.go b/weed/election/cluster_test.go
new file mode 100644
index 000000000..624ff27d6
--- /dev/null
+++ b/weed/election/cluster_test.go
@@ -0,0 +1,47 @@
+package election
+
+import (
+	"github.com/chrislusf/seaweedfs/weed/pb"
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestClusterAddRemoveNodes(t *testing.T) {
+	c := NewCluster()
+
+	c.AddClusterNode("filer", pb.ServerAddress("111:1"), "23.45")
+	c.AddClusterNode("filer", pb.ServerAddress("111:2"), "23.45")
+	assert.Equal(t, []pb.ServerAddress{
+		pb.ServerAddress("111:1"),
+		pb.ServerAddress("111:2"),
+	}, c.leaders.GetLeaders())
+
+	c.AddClusterNode("filer", pb.ServerAddress("111:3"), "23.45")
+	c.AddClusterNode("filer", pb.ServerAddress("111:4"), "23.45")
+	assert.Equal(t, []pb.ServerAddress{
+		pb.ServerAddress("111:1"),
+		pb.ServerAddress("111:2"),
+		pb.ServerAddress("111:3"),
+	}, c.leaders.GetLeaders())
+
+	c.AddClusterNode("filer", pb.ServerAddress("111:5"), "23.45")
+	c.AddClusterNode("filer", pb.ServerAddress("111:6"), "23.45")
+	c.RemoveClusterNode("filer", pb.ServerAddress("111:4"))
+	assert.Equal(t, []pb.ServerAddress{
+		pb.ServerAddress("111:1"),
+		pb.ServerAddress("111:2"),
+		pb.ServerAddress("111:3"),
+	}, c.leaders.GetLeaders())
+
+	// remove oldest
+	c.RemoveClusterNode("filer", pb.ServerAddress("111:1"))
+	assert.Equal(t, []pb.ServerAddress{
+		pb.ServerAddress("111:6"),
+		pb.ServerAddress("111:2"),
+		pb.ServerAddress("111:3"),
+	}, c.leaders.GetLeaders())
+
+	// remove oldest
+	c.RemoveClusterNode("filer", pb.ServerAddress("111:1"))
+
+}