diff options
Diffstat (limited to 'src/cmd/cgo/internal/swig/swig_test.go')
-rw-r--r-- | src/cmd/cgo/internal/swig/swig_test.go | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/src/cmd/cgo/internal/swig/swig_test.go b/src/cmd/cgo/internal/swig/swig_test.go new file mode 100644 index 0000000..4156313 --- /dev/null +++ b/src/cmd/cgo/internal/swig/swig_test.go @@ -0,0 +1,153 @@ +// Copyright 2023 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 swig + +import ( + "cmd/internal/quoted" + "internal/testenv" + "os" + "os/exec" + "path/filepath" + "regexp" + "strconv" + "strings" + "sync" + "testing" +) + +func TestStdio(t *testing.T) { + testenv.MustHaveCGO(t) + mustHaveSwig(t) + run(t, "testdata/stdio", false) +} + +func TestCall(t *testing.T) { + testenv.MustHaveCGO(t) + mustHaveSwig(t) + mustHaveCxx(t) + run(t, "testdata/callback", false, "Call") + t.Run("lto", func(t *testing.T) { run(t, "testdata/callback", true, "Call") }) +} + +func TestCallback(t *testing.T) { + testenv.MustHaveCGO(t) + mustHaveSwig(t) + mustHaveCxx(t) + run(t, "testdata/callback", false, "Callback") + t.Run("lto", func(t *testing.T) { run(t, "testdata/callback", true, "Callback") }) +} + +func run(t *testing.T, dir string, lto bool, args ...string) { + runArgs := append([]string{"run", "."}, args...) + cmd := exec.Command("go", runArgs...) + cmd.Dir = dir + if lto { + const cflags = "-flto -Wno-lto-type-mismatch -Wno-unknown-warning-option" + cmd.Env = append(cmd.Environ(), + "CGO_CFLAGS="+cflags, + "CGO_CXXFLAGS="+cflags, + "CGO_LDFLAGS="+cflags) + } + out, err := cmd.CombinedOutput() + if string(out) != "OK\n" { + t.Errorf("%s", string(out)) + } + if err != nil { + t.Errorf("%s", err) + } +} + +func mustHaveCxx(t *testing.T) { + // Ask the go tool for the CXX it's configured to use. + cxx, err := exec.Command("go", "env", "CXX").CombinedOutput() + if err != nil { + t.Fatalf("go env CXX failed: %s", err) + } + args, err := quoted.Split(string(cxx)) + if err != nil { + t.Skipf("could not parse 'go env CXX' output %q: %s", string(cxx), err) + } + if len(args) == 0 { + t.Skip("no C++ compiler") + } + testenv.MustHaveExecPath(t, string(args[0])) +} + +var ( + swigOnce sync.Once + haveSwig bool +) + +func mustHaveSwig(t *testing.T) { + swigOnce.Do(func() { + mustHaveSwigOnce(t) + haveSwig = true + }) + // The first call will skip t with a nice message. On later calls, we just skip. + if !haveSwig { + t.Skip("swig not found") + } +} + +func mustHaveSwigOnce(t *testing.T) { + swig, err := exec.LookPath("swig") + if err != nil { + t.Skipf("swig not in PATH: %s", err) + } + + // Check that swig was installed with Go support by checking + // that a go directory exists inside the swiglib directory. + // See https://golang.org/issue/23469. + output, err := exec.Command(swig, "-go", "-swiglib").Output() + if err != nil { + t.Skip("swig is missing Go support") + } + swigDir := strings.TrimSpace(string(output)) + + _, err = os.Stat(filepath.Join(swigDir, "go")) + if err != nil { + t.Skip("swig is missing Go support") + } + + // Check that swig has a new enough version. + // See https://golang.org/issue/22858. + out, err := exec.Command(swig, "-version").CombinedOutput() + if err != nil { + t.Skipf("failed to get swig version:%s\n%s", err, string(out)) + } + + re := regexp.MustCompile(`[vV]ersion +(\d+)([.]\d+)?([.]\d+)?`) + matches := re.FindSubmatch(out) + if matches == nil { + // Can't find version number; hope for the best. + t.Logf("failed to find swig version, continuing") + return + } + + var parseError error + atoi := func(s string) int { + x, err := strconv.Atoi(s) + if err != nil && parseError == nil { + parseError = err + } + return x + } + var major, minor, patch int + major = atoi(string(matches[1])) + if len(matches[2]) > 0 { + minor = atoi(string(matches[2][1:])) + } + if len(matches[3]) > 0 { + patch = atoi(string(matches[3][1:])) + } + if parseError != nil { + t.Logf("error parsing swig version %q, continuing anyway: %s", string(matches[0]), parseError) + return + } + t.Logf("found swig version %d.%d.%d", major, minor, patch) + if major < 3 || (major == 3 && minor == 0 && patch < 6) { + t.Skip("test requires swig 3.0.6 or later") + } +} |