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package kagus
import (
"bytes"
"testing"
)
func TestLimitedWriting(t *testing.T) {
buf := new(bytes.Buffer)
lw := &LimitedWriter{buf, 10}
if _, err := lw.Write([]byte{1, 2}); err != nil {
t.Fatalf("lw.Write failed: %s", err)
}
if lw.N != 8 {
t.Fatalf("lw.N was supposed to be 8, is %d", lw.N)
}
if !bytes.Equal(buf.Bytes(), []byte{1, 2}) {
t.Errorf("Unexpected content of buf: %v", buf.Bytes())
}
n, err := lw.Write([]byte{3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13})
if (n != 8) || (err != WriteLimitReached) {
t.Fatalf("lw.Write returned with unexpected n, err: %d, %s", n, err)
}
n, err = lw.Write([]byte("trololo"))
if (n != 0) || (err != WriteLimitReached) {
t.Fatalf("lw.Write returned with unexpected n, err: %d, %s", n, err)
}
}
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