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storedcounter_test.go
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storedcounter_test.go
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package storedcounter_test
import (
"testing"
"github.com/ipfs/go-datastore"
"github.com/stretchr/testify/require"
"github.com/filecoin-project/go-storedcounter"
)
func TestStoredCounter(t *testing.T) {
ds := datastore.NewMapDatastore()
t.Run("test two instances with same data store and key count together", func(t *testing.T) {
key := datastore.NewKey("counter")
sc1 := storedcounter.New(ds, key)
next, err := sc1.Next()
require.NoError(t, err)
require.Equal(t, next, uint64(0))
sc2 := storedcounter.New(ds, key)
next, err = sc2.Next()
require.NoError(t, err)
require.Equal(t, next, uint64(1))
next, err = sc1.Next()
require.NoError(t, err)
require.Equal(t, next, uint64(2))
next, err = sc2.Next()
require.NoError(t, err)
require.Equal(t, next, uint64(3))
})
t.Run("test two instances with same data store but different keys count seperate", func(t *testing.T) {
key1 := datastore.NewKey("counter 1")
key2 := datastore.NewKey("counter 2")
sc1 := storedcounter.New(ds, key1)
next, err := sc1.Next()
require.NoError(t, err)
require.Equal(t, next, uint64(0))
sc2 := storedcounter.New(ds, key2)
next, err = sc2.Next()
require.NoError(t, err)
require.Equal(t, next, uint64(0))
next, err = sc1.Next()
require.NoError(t, err)
require.Equal(t, next, uint64(1))
next, err = sc2.Next()
require.NoError(t, err)
require.Equal(t, next, uint64(1))
})
}