misc/cgo/testcshared: skip all but TestExportedSymbols on windows

TestUnexportedSymbols requires dup2 that
my gcc installation does not have.

TestSignalHandlersWithNotify fails with:
undefined: syscall.SIGIO.

TestSignalHandlers fails with:
sched.h: No such file or directory.

TestExportedSymbolsWithDynamicLoad fails with:
dlfcn.h: No such file or directory.

Also add t.Helper calls to better error messages.

Updates #11058

Change-Id: I7eb514968464256b8337e45f57fcb7d7fe0e4693
Reviewed-on: https://go-review.googlesource.com/68410
TryBot-Result: Gobot Gobot <[email protected]>
Reviewed-by: Ian Lance Taylor <[email protected]>

misc/cgo/testcshared/cshared_test.go

@@ -188,6 +188,7 @@ func adbRun(t *testing.T, env []string, adbargs ...string) string {
 }
 
 func run(t *testing.T, env []string, args ...string) string {
+ t.Helper()
  cmd := exec.Command(args[0], args[1:]...)
  cmd.Env = env
  out, err := cmd.CombinedOutput()
@@ -200,13 +201,15 @@ func run(t *testing.T, env []string, args ...string) string {
 }
 
 func runExe(t *testing.T, env []string, args ...string) string {
+ t.Helper()
  if GOOS == "android" {
  return adbRun(t, env, args...)
  }
  return run(t, env, args...)
 }
 
 func runCC(t *testing.T, args ...string) string {
+ t.Helper()
  return run(t, nil, append(cc, args...)...)
 }
 
@@ -295,6 +298,11 @@ func TestExportedSymbols(t *testing.T) {
 func TestExportedSymbolsWithDynamicLoad(t *testing.T) {
  t.Parallel()
 
+ if GOOS == "windows" {
+ t.Logf("Skipping on %s", GOOS)
+ return
+ }
+
  cmd := "testp1"
 
  createHeadersOnce(t)
@@ -314,6 +322,11 @@ func TestExportedSymbolsWithDynamicLoad(t *testing.T) {
 func TestUnexportedSymbols(t *testing.T) {
  t.Parallel()
 
+ if GOOS == "windows" {
+ t.Logf("Skipping on %s", GOOS)
+ return
+ }
+
  cmd := "testp2"
  libname := "libgo2." + libSuffix
 
@@ -348,7 +361,11 @@ func TestUnexportedSymbols(t *testing.T) {
 func TestMainExportedOnAndroid(t *testing.T) {
  t.Parallel()
 
- if GOOS != "android" {
+ switch GOOS {
+ case "android":
+ break
+ default:
+ t.Logf("Skipping on %s", GOOS)
  return
  }
 
@@ -394,12 +411,20 @@ func testSignalHandlers(t *testing.T, pkgname, cfile, cmd string) {
 // test4: test signal handlers
 func TestSignalHandlers(t *testing.T) {
  t.Parallel()
+ if GOOS == "windows" {
+ t.Logf("Skipping on %s", GOOS)
+ return
+ }
  testSignalHandlers(t, "libgo4", "main4.c", "testp4")
 }
 
 // test5: test signal handlers with os/signal.Notify
 func TestSignalHandlersWithNotify(t *testing.T) {
  t.Parallel()
+ if GOOS == "windows" {
+ t.Logf("Skipping on %s", GOOS)
+ return
+ }
  testSignalHandlers(t, "libgo5", "main5.c", "testp5")
 }
 
@@ -410,7 +435,7 @@ func TestPIE(t *testing.T) {
  case "linux", "android":
  break
  default:
- t.Logf("Skipping TestPIE on %s", GOOS)
+ t.Logf("Skipping on %s", GOOS)
  return
  }