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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 ld
import (
"internal/testenv"
"os"
"path/filepath"
"reflect"
"runtime"
"testing"
"cmd/internal/objabi"
)
func TestDedupLibraries(t *testing.T) {
ctxt := &Link{}
ctxt.Target.HeadType = objabi.Hlinux
libs := []string{"libc.so", "libc.so.6"}
got := dedupLibraries(ctxt, libs)
if !reflect.DeepEqual(got, libs) {
t.Errorf("dedupLibraries(%v) = %v, want %v", libs, got, libs)
}
}
func TestDedupLibrariesOpenBSD(t *testing.T) {
ctxt := &Link{}
ctxt.Target.HeadType = objabi.Hopenbsd
tests := []struct {
libs []string
want []string
}{
{
libs: []string{"libc.so"},
want: []string{"libc.so"},
},
{
libs: []string{"libc.so", "libc.so.96.1"},
want: []string{"libc.so.96.1"},
},
{
libs: []string{"libc.so.96.1", "libc.so"},
want: []string{"libc.so.96.1"},
},
{
libs: []string{"libc.a", "libc.so.96.1"},
want: []string{"libc.a", "libc.so.96.1"},
},
{
libs: []string{"libpthread.so", "libc.so"},
want: []string{"libc.so", "libpthread.so"},
},
{
libs: []string{"libpthread.so.26.1", "libpthread.so", "libc.so.96.1", "libc.so"},
want: []string{"libc.so.96.1", "libpthread.so.26.1"},
},
{
libs: []string{"libpthread.so.26.1", "libpthread.so", "libc.so.96.1", "libc.so", "libfoo.so"},
want: []string{"libc.so.96.1", "libfoo.so", "libpthread.so.26.1"},
},
}
for _, test := range tests {
t.Run("dedup", func(t *testing.T) {
got := dedupLibraries(ctxt, test.libs)
if !reflect.DeepEqual(got, test.want) {
t.Errorf("dedupLibraries(%v) = %v, want %v", test.libs, got, test.want)
}
})
}
}
func TestDedupLibrariesOpenBSDLink(t *testing.T) {
// The behavior we're checking for is of interest only on OpenBSD.
if runtime.GOOS != "openbsd" {
t.Skip("test only useful on openbsd")
}
testenv.MustHaveGoBuild(t)
testenv.MustHaveCGO(t)
t.Parallel()
dir := t.TempDir()
// cgo_import_dynamic both the unversioned libraries and pull in the
// net package to get a cgo package with a versioned library.
srcFile := filepath.Join(dir, "x.go")
src := `package main
import (
_ "net"
)
//go:cgo_import_dynamic _ _ "libc.so"
func main() {}`
if err := os.WriteFile(srcFile, []byte(src), 0644); err != nil {
t.Fatal(err)
}
exe := filepath.Join(dir, "deduped.exe")
out, err := testenv.Command(t, testenv.GoToolPath(t), "build", "-o", exe, srcFile).CombinedOutput()
if err != nil {
t.Fatalf("build failure: %s\n%s\n", err, string(out))
}
// Result should be runnable.
if _, err = testenv.Command(t, exe).CombinedOutput(); err != nil {
t.Fatal(err)
}
}