public void GetHostTest_When_InstanceId_HasEmpty()
{
WeightRoundRobinLBStrategy strategy = new WeightRoundRobinLBStrategy();
var list = new List <Host>()
{
new Host {
InstanceId = "instance-1", Weight = 3, Ip = "127.0.0.2", Port = 80, ClusterName = "s", ServiceName = "ss"
},
new Host {
InstanceId = "", Weight = 2, Ip = "127.0.0.1", Port = 80, ClusterName = "s", ServiceName = "ss"
},
new Host {
InstanceId = null, Weight = 2, Ip = "127.0.0.1", Port = 8080, ClusterName = "s", ServiceName = "ss"
},
};
HashSet <string> set = new HashSet <string>();
for (int i = 0; i < 20; i++)
{
var host = strategy.GetHost(list);
set.Add(string.IsNullOrWhiteSpace(host.InstanceId) ? $"{host.Ip}#{host.Port}#{host.ClusterName}#{host.ServiceName}" : host.InstanceId);
}
Assert.Equal(3, set.Count);
}
public void GetHostTest_When_InstanceId_IsNotEmpty()
{
WeightRoundRobinLBStrategy strategy = new WeightRoundRobinLBStrategy();
var list = new List <Host>()
{
new Host {
InstanceId = "instance-1", Weight = 1
},
new Host {
InstanceId = "instance-2", Weight = 2
},
new Host {
InstanceId = "instance-3", Weight = 1
},
};
List <string> res = new List <string>();
for (int i = 0; i < 4; i++)
{
var host = strategy.GetHost(list);
res.Add(host.InstanceId);
}
var i1 = res.Count(x => x.Equals("instance-1"));
var i2 = res.Count(x => x.Equals("instance-2"));
var i3 = res.Count(x => x.Equals("instance-3"));
Assert.Equal(1, i1);
Assert.Equal(2, i2);
Assert.Equal(1, i3);
}
public void GetHostTest_When_InstanceId_AreTheSame()
{
WeightRoundRobinLBStrategy strategy = new WeightRoundRobinLBStrategy();
var list = new List <Host>()
{
new Host {
InstanceId = "instance-1", Weight = 3
},
new Host {
InstanceId = "instance-2", Weight = 2
},
new Host {
InstanceId = "instance-2", Weight = 2
},
};
HashSet <string> set = new HashSet <string>();
for (int i = 0; i < 20; i++)
{
var host = strategy.GetHost(list);
set.Add(host.InstanceId);
}
Assert.Equal(2, set.Count);
}