yumosx commented on code in PR #3046:
URL: https://github.com/apache/dubbo-go/pull/3046#discussion_r2508745818
##########
cluster/loadbalance/p2c/loadbalance_test.go:
##########
@@ -101,28 +91,23 @@ func TestLoadBalance(t *testing.T) {
url1, _ :=
common.NewURL("dubbo://192.168.1.1:20000/com.ikurento.user.UserProvider")
url2, _ :=
common.NewURL("dubbo://192.168.1.2:20000/com.ikurento.user.UserProvider")
+ // P2C algorithm randomly selects 2 invokers, so we need to
mock all possible combinations
m.EXPECT().
- GetMethodMetrics(gomock.Eq(url0),
gomock.Eq(invocation.MethodName()), gomock.Eq(metrics.HillClimbing)).
- Times(1).
+ GetMethodMetrics(gomock.Any(),
gomock.Eq(invocation.MethodName()), gomock.Eq(metrics.HillClimbing)).
+ Times(2).
Return(uint64(10), nil)
- m.EXPECT().
- GetMethodMetrics(gomock.Eq(url1),
gomock.Eq(invocation.MethodName()), gomock.Eq(metrics.HillClimbing)).
- Times(1).
- Return(uint64(5), nil)
ivkArr := []base.Invoker{
base.NewBaseInvoker(url0),
base.NewBaseInvoker(url1),
base.NewBaseInvoker(url2),
}
- ivk := lb.Select(ivkArr, invocation)
-
- assert.Equal(t, ivkArr[0].GetURL().String(),
ivk.GetURL().String())
+ got := lb.Select(ivkArr, invocation)
+ assert.NotNil(t, got)
Review Comment:
它这个算法的原理是出现多个节点随机挑选两个值，然后比较它的权重，权重大的就选择，这一点我们是无法去预测的
只能通过这种判空的方式去做
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