gosnow_test.go

/*
github.com/twitter/snowflake in golang
*/

package gosnow

import (
	//"github.com/stretchrcom/testify/assert"
	"testing"
)

func TestDefaultWorkId(t *testing.T) {
	id := DefaultWorkId()
	id2 := DefaultWorkId()
	t.Logf("id %v, next id %v", id, id2)

	if id != id2 {
		t.Errorf("different workd id, %v and  %v", id, id2)
	}
}

func TestNext(t *testing.T) {
	id := Default.Next()
	id2 := Default.Next()

	t.Logf("id %v, next id %v", id, id2)

	if id > id2 {
		t.Errorf("id %v is smaller then previous one %v", id2, id)
	}
}

func TestDuplicate(t *testing.T) {

	total := 1000 * 1000
	data := make(map[uint64]int)

	sf := Default

	var id, pre uint64
	for i := 0; i < total; i++ {

		id = sf.Next()

		if id < pre {
			t.Errorf("id %v is samller than previous one %v (%v)", id, pre, (id - pre))
		}
		pre = id

		count := data[id]
		if count > 0 {
			t.Errorf("duplicate id %v %d", id, count)
		}
		data[id] = count + 1
	}

	length := len(data)
	t.Logf("MaxSequence %d, workerId %d", MaxSequence, sf.workerId)
	t.Logf("map length %v", length)
	if length != total {
		t.Errorf("legth does not match want %v actual %d", total, length)
	}

}