open-vault/helper/gated-writer/writer_test.go

35 lines
528 B
Go

package gatedwriter
import (
"bytes"
"io"
"testing"
)
func TestWriter_impl(t *testing.T) {
var _ io.Writer = new(Writer)
}
func TestWriter(t *testing.T) {
buf := new(bytes.Buffer)
w := &Writer{Writer: buf}
w.Write([]byte("foo\n"))
w.Write([]byte("bar\n"))
if buf.String() != "" {
t.Fatalf("bad: %s", buf.String())
}
w.Flush()
if buf.String() != "foo\nbar\n" {
t.Fatalf("bad: %s", buf.String())
}
w.Write([]byte("baz\n"))
if buf.String() != "foo\nbar\nbaz\n" {
t.Fatalf("bad: %s", buf.String())
}
}