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92 lines
2.3 KiB
92 lines
2.3 KiB
package p2c
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import (
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"context"
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"fmt"
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"math/rand"
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"sync"
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"sync/atomic"
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"testing"
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"time"
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"github.com/go-kratos/kratos/v2/registry"
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"github.com/go-kratos/kratos/v2/selector"
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"github.com/go-kratos/kratos/v2/selector/filter"
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"github.com/stretchr/testify/assert"
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)
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func TestWrr3(t *testing.T) {
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p2c := New(WithFilter(filter.Version("v2.0.0")))
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var nodes []selector.Node
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for i := 0; i < 3; i++ {
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addr := fmt.Sprintf("127.0.0.%d:8080", i)
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nodes = append(nodes, selector.NewNode(
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addr,
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®istry.ServiceInstance{
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ID: addr,
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Version: "v2.0.0",
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Metadata: map[string]string{"weight": "10"},
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}))
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}
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p2c.Apply(nodes)
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var count1, count2, count3 int64
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group := &sync.WaitGroup{}
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var lk sync.Mutex
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for i := 0; i < 9000; i++ {
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group.Add(1)
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go func() {
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defer group.Done()
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lk.Lock()
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d := time.Duration(rand.Intn(500)) * time.Millisecond
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lk.Unlock()
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time.Sleep(d)
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n, done, err := p2c.Select(context.Background())
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assert.Nil(t, err)
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assert.NotNil(t, done)
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assert.NotNil(t, n)
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time.Sleep(time.Millisecond * 10)
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done(context.Background(), selector.DoneInfo{})
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if n.Address() == "127.0.0.0:8080" {
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atomic.AddInt64(&count1, 1)
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} else if n.Address() == "127.0.0.1:8080" {
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atomic.AddInt64(&count2, 1)
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} else if n.Address() == "127.0.0.2:8080" {
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atomic.AddInt64(&count3, 1)
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}
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}()
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}
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group.Wait()
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assert.Greater(t, count1, int64(1500))
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assert.Less(t, count1, int64(4500))
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assert.Greater(t, count2, int64(1500))
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assert.Less(t, count2, int64(4500))
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assert.Greater(t, count3, int64(1500))
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assert.Less(t, count3, int64(4500))
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}
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func TestEmpty(t *testing.T) {
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b := &Balancer{}
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_, _, err := b.Pick(context.Background(), []selector.WeightedNode{})
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assert.NotNil(t, err)
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}
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func TestOne(t *testing.T) {
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p2c := New(WithFilter(filter.Version("v2.0.0")))
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var nodes []selector.Node
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for i := 0; i < 1; i++ {
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addr := fmt.Sprintf("127.0.0.%d:8080", i)
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nodes = append(nodes, selector.NewNode(
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addr,
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®istry.ServiceInstance{
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ID: addr,
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Version: "v2.0.0",
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Metadata: map[string]string{"weight": "10"},
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}))
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}
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p2c.Apply(nodes)
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n, done, err := p2c.Select(context.Background())
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assert.Nil(t, err)
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assert.NotNil(t, done)
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assert.NotNil(t, n)
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assert.Equal(t, "127.0.0.0:8080", n.Address())
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}
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