package selector_test

import (
	"context"
	"git.diulo.com/mogfee/kit/registry"
	"git.diulo.com/mogfee/kit/selector"
	"git.diulo.com/mogfee/kit/selector/filter"
	"git.diulo.com/mogfee/kit/selector/random"
	"gopkg.in/go-playground/assert.v1"
	"testing"
)

func TestSelect(t *testing.T) {
	t.Run("没有可用服务", func(t *testing.T) {
		s := random.New()
		_, _, err := s.Select(context.Background())
		assert.Equal(t, err, selector.ErrNoAvailable)
	})
	t.Run("正常访问", func(t *testing.T) {
		s := random.New()
		s.Apply(nodes)
		selected, _, err := s.Select(context.Background())
		assert.Equal(t, err, nil)
		assert.Equal(t, selected.Address(), nodes[0].Address())

		selected, _, err = s.Select(context.Background())
		assert.Equal(t, err, nil)
		assert.Equal(t, selected.Address(), nodes[1].Address())
	})

	t.Run("获取v2版本", func(t *testing.T) {
		s := random.New()
		s.Apply(nodes)
		selected, _, err := s.Select(context.Background(), selector.WithNodeFilter(filter.Version("v2.0.0")))
		assert.Equal(t, err, nil)
		assert.Equal(t, selected.Address(), nodes[1].Address())
	})
}

var nodes = []selector.Node{
	selector.NewNode("http", "127.0.0.1:8080", &registry.ServiceInstance{
		ID:        "127.0.0.1:8080",
		Name:      "hello",
		Version:   "v1.0.0",
		Metadata:  map[string]string{"weight": "10"},
		Endpoints: []string{"127.0.0.1:8080"},
	}),
	selector.NewNode("http", "127.0.0.1:9090", &registry.ServiceInstance{
		ID:        "127.0.0.1:9090",
		Name:      "hello",
		Version:   "v2.0.0",
		Metadata:  map[string]string{"weight": "10"},
		Endpoints: []string{"127.0.0.1:9090"},
	}),
}