mirror of
https://github.com/golang/go
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eaa97fbf20
The cgo tool would sometimes emit a bitfield at an offset that did not correspond to the C offset, such as for the example in the new test. Change-Id: I61b2ca10ee44a42f81c13ed12865f2060168fed5 Reviewed-on: https://go-review.googlesource.com/c/go/+/252378 Trust: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Go Bot <gobot@golang.org>
89 lines
2.2 KiB
Go
89 lines
2.2 KiB
Go
// Copyright 2019 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package testgodefs
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import (
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"bytes"
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"io/ioutil"
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"os"
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"os/exec"
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"path/filepath"
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"strings"
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"testing"
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)
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// We are testing cgo -godefs, which translates Go files that use
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// import "C" into Go files with Go definitions of types defined in the
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// import "C" block. Add more tests here.
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var filePrefixes = []string{
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"anonunion",
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"bitfields",
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"issue8478",
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"fieldtypedef",
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"issue37479",
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"issue37621",
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"issue38649",
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"issue39534",
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}
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func TestGoDefs(t *testing.T) {
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testdata, err := filepath.Abs("testdata")
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if err != nil {
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t.Fatal(err)
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}
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gopath, err := ioutil.TempDir("", "testgodefs-gopath")
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if err != nil {
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t.Fatal(err)
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}
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defer os.RemoveAll(gopath)
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dir := filepath.Join(gopath, "src", "testgodefs")
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if err := os.MkdirAll(dir, 0755); err != nil {
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t.Fatal(err)
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}
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for _, fp := range filePrefixes {
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cmd := exec.Command("go", "tool", "cgo",
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"-godefs",
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"-srcdir", testdata,
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"-objdir", dir,
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fp+".go")
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cmd.Stderr = new(bytes.Buffer)
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out, err := cmd.Output()
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if err != nil {
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t.Fatalf("%s: %v\n%s", strings.Join(cmd.Args, " "), err, cmd.Stderr)
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}
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if err := ioutil.WriteFile(filepath.Join(dir, fp+"_defs.go"), out, 0644); err != nil {
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t.Fatal(err)
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}
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}
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main, err := ioutil.ReadFile(filepath.Join("testdata", "main.go"))
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if err != nil {
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t.Fatal(err)
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}
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if err := ioutil.WriteFile(filepath.Join(dir, "main.go"), main, 0644); err != nil {
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t.Fatal(err)
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}
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if err := ioutil.WriteFile(filepath.Join(dir, "go.mod"), []byte("module testgodefs\ngo 1.14\n"), 0644); err != nil {
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t.Fatal(err)
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}
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// Use 'go run' to build and run the resulting binary in a single step,
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// instead of invoking 'go build' and the resulting binary separately, so that
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// this test can pass on mobile builders, which do not copy artifacts back
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// from remote invocations.
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cmd := exec.Command("go", "run", ".")
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cmd.Env = append(os.Environ(), "GOPATH="+gopath)
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cmd.Dir = dir
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if out, err := cmd.CombinedOutput(); err != nil {
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t.Fatalf("%s [%s]: %v\n%s", strings.Join(cmd.Args, " "), dir, err, out)
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}
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}
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