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// Copyright 2020 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.
package goobj2
import (
"bufio"
"bytes"
"cmd/internal/bio"
"testing"
)
func dummyWriter() *Writer {
var buf bytes.Buffer
wr := &bio.Writer{Writer: bufio.NewWriter(&buf)} // hacky: no file, so cannot seek
return NewWriter(wr)
}
func TestSize(t *testing.T) {
// This test checks that hard-coded sizes match the actual sizes
// in the object file format.
tests := []struct {
x interface{ Write(*Writer) }
want uint32
}{
{&Reloc{}, RelocSize},
{&Aux{}, AuxSize},
}
w := dummyWriter()
for _, test := range tests {
off0 := w.off
test.x.Write(w)
got := w.off - off0
if got != test.want {
t.Errorf("size(%T) mismatch: %d bytes written, but size=%d", test.x, got, test.want)
}
}
}
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