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// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build linux || freebsd || dragonfly || solaris
package rand
import (
"bytes"
"errors"
"testing"
)
func TestBatched(t *testing.T) {
fillBatched := batched(func(p []byte) error {
for i := range p {
p[i] = byte(i)
}
return nil
}, 5)
p := make([]byte, 13)
if err := fillBatched(p); err != nil {
t.Fatalf("batched function returned error: %s", err)
}
expected := []byte{0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 0, 1, 2}
if !bytes.Equal(expected, p) {
t.Errorf("incorrect batch result: got %x, want %x", p, expected)
}
}
func TestBatchedError(t *testing.T) {
b := batched(func(p []byte) error { return errors.New("") }, 5)
if b(make([]byte, 13)) == nil {
t.Fatal("batched function should have returned error")
}
}
func TestBatchedEmpty(t *testing.T) {
b := batched(func(p []byte) error { return errors.New("") }, 5)
if err := b(make([]byte, 0)); err != nil {
t.Fatalf("empty slice should always return nil: %s", err)
}
}
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