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package toolbox_test
import (
"testing"
"github.com/stretchr/testify/assert"
"github.com/viant/toolbox"
)
func TestSliceIterator(t *testing.T) {
{
slice := []string{"a", "r", "c"}
iterator := toolbox.NewSliceIterator(slice)
var values = make([]interface{}, 1)
value := values[0]
assert.True(t, iterator.HasNext())
err := iterator.Next(&value)
assert.Nil(t, err)
assert.Equal(t, "a", value)
assert.True(t, iterator.HasNext())
err = iterator.Next(&value)
assert.Nil(t, err)
assert.Equal(t, "r", value)
assert.True(t, iterator.HasNext())
err = iterator.Next(&value)
assert.Nil(t, err)
assert.Equal(t, "c", value)
}
{
slice := []string{"a", "r", "c"}
iterator := toolbox.NewSliceIterator(slice)
value := ""
assert.True(t, iterator.HasNext())
err := iterator.Next(&value)
assert.Nil(t, err)
assert.Equal(t, "a", value)
assert.True(t, iterator.HasNext())
err = iterator.Next(&value)
assert.Nil(t, err)
assert.Equal(t, "r", value)
assert.True(t, iterator.HasNext())
err = iterator.Next(&value)
assert.Nil(t, err)
assert.Equal(t, "c", value)
}
{
slice := []interface{}{"a", "z", "c"}
iterator := toolbox.NewSliceIterator(slice)
value := ""
assert.True(t, iterator.HasNext())
err := iterator.Next(&value)
assert.Nil(t, err)
assert.Equal(t, "a", value)
assert.True(t, iterator.HasNext())
err = iterator.Next(&value)
assert.Nil(t, err)
assert.Equal(t, "z", value)
var values = make([]interface{}, 1)
assert.True(t, iterator.HasNext())
err = iterator.Next(&values[0])
assert.Nil(t, err)
assert.Equal(t, "c", values[0])
}
{
slice := []int{3, 2, 1}
iterator := toolbox.NewSliceIterator(slice)
value := 0
assert.True(t, iterator.HasNext())
err := iterator.Next(&value)
assert.Nil(t, err)
assert.Equal(t, 3, value)
assert.True(t, iterator.HasNext())
err = iterator.Next(&value)
assert.Nil(t, err)
assert.Equal(t, 2, value)
assert.True(t, iterator.HasNext())
err = iterator.Next(&value)
assert.Nil(t, err)
assert.Equal(t, 1, value)
}
}
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