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net: disable Windows netsh tests when netsh won't run

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On my Surface Pro X running the insider preview,
running "netsh help" from Powershell started from the task bar works.
But running "powershell" at a cmd.exe prompt and then running
"netsh help" produces missing DLL errors.
These aren't our fault, so just skip the netsh-based tests if this happens.

Change-Id: I13a17e01143d823d3b5242d827db056bd253e3e9
Reviewed-on: https://go-review.googlesource.com/c/go/+/293849
Trust: Russ Cox <rsc@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
This commit is contained in:
Russ Cox 2021-02-18 11:47:47 -05:00
parent 40765ffa95
commit ee7038f6a5
1 changed files with 9 additions and 8 deletions
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17
src/net/net_windows_test.go
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@ -204,12 +204,17 @@ func runCmd(args ...string) ([]byte, error) {
return removeUTF8BOM(out), nil
}
func netshSpeaksEnglish(t *testing.T) bool {
func checkNetsh(t *testing.T) {
out, err := runCmd("netsh", "help")
if err != nil {
t.Fatal(err)
}
return bytes.Contains(out, []byte("The following commands are available:"))
if bytes.Contains(out, []byte("The following helper DLL cannot be loaded")) {
t.Skipf("powershell failure:\n%s", err)
}
if !bytes.Contains(out, []byte("The following commands are available:")) {
t.Skipf("powershell does not speak English:\n%s", out)
}
}
func netshInterfaceIPShowInterface(ipver string, ifaces map[string]bool) error {
@ -256,9 +261,7 @@ func netshInterfaceIPShowInterface(ipver string, ifaces map[string]bool) error {
}
func TestInterfacesWithNetsh(t *testing.T) {
if !netshSpeaksEnglish(t) {
t.Skip("English version of netsh required for this test")
}
checkNetsh(t)
toString := func(name string, isup bool) string {
if isup {
@ -427,9 +430,7 @@ func netshInterfaceIPv6ShowAddress(name string, netshOutput []byte) []string {
}
func TestInterfaceAddrsWithNetsh(t *testing.T) {
if !netshSpeaksEnglish(t) {
t.Skip("English version of netsh required for this test")
}
checkNetsh(t)
outIPV4, err := runCmd("netsh", "interface", "ipv4", "show", "address")
if err != nil {