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net: ignore network failures on some builders

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We run the external network tests on builders, but some of our
builders have less-than-ideal DNS connectivity. This change continues
to run the tests on all builders, but marks certain builders as flaky
(network-wise), and only validates their DNS results if they got DNS
results.

Change-Id: I826dc2a6f6da55add89ae9c6db892b3b2f7b526b
Reviewed-on: https://go-review.googlesource.com/22852
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Brad Fitzpatrick 2016-05-06 16:24:57 +00:00
parent 61602b0e9e
commit 1ff57143af
2 changed files with 16 additions and 2 deletions
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7
src/internal/testenv/testenv.go
View File

@ -16,6 +16,7 @@ import (
"os/exec"
"path/filepath"
"runtime"
"strconv"
"strings"
"testing"
)
@ -133,3 +134,9 @@ func SkipFlaky(t *testing.T, issue int) {
t.Skipf("skipping known flaky test without the -flaky flag; see golang.org/issue/%d", issue)
}
}
func SkipFlakyNet(t *testing.T) {
if v, _ := strconv.ParseBool(os.Getenv("GO_BUILDER_FLAKY_NET")); v {
t.Skip("skipping test on builder known to have frequent network failures")
}
}

11
src/net/lookup_test.go
View File

@ -498,6 +498,7 @@ func TestLookupDotsWithRemoteSource(t *testing.T) {
func testDots(t *testing.T, mode string) {
names, err := LookupAddr("8.8.8.8") // Google dns server
if err != nil {
testenv.SkipFlakyNet(t)
t.Errorf("LookupAddr(8.8.8.8): %v (mode=%v)", err, mode)
} else {
for _, name := range names {
@ -509,12 +510,16 @@ func testDots(t *testing.T, mode string) {
}
cname, err := LookupCNAME("www.mit.edu")
if err != nil || !strings.HasSuffix(cname, ".") {
t.Errorf("LookupCNAME(www.mit.edu) = %v, %v, want cname ending in . with trailing dot (mode=%v)", cname, err, mode)
if err != nil {
testenv.SkipFlakyNet(t)
t.Errorf("LookupCNAME(www.mit.edu, mode=%v): %v", mode, err)
} else if !strings.HasSuffix(cname, ".") {
t.Errorf("LookupCNAME(www.mit.edu) = %v, want cname ending in . with trailing dot (mode=%v)", cname, mode)
}
mxs, err := LookupMX("google.com")
if err != nil {
testenv.SkipFlakyNet(t)
t.Errorf("LookupMX(google.com): %v (mode=%v)", err, mode)
} else {
for _, mx := range mxs {
@ -527,6 +532,7 @@ func testDots(t *testing.T, mode string) {
nss, err := LookupNS("google.com")
if err != nil {
testenv.SkipFlakyNet(t)
t.Errorf("LookupNS(google.com): %v (mode=%v)", err, mode)
} else {
for _, ns := range nss {
@ -539,6 +545,7 @@ func testDots(t *testing.T, mode string) {
cname, srvs, err := LookupSRV("xmpp-server", "tcp", "google.com")
if err != nil {
testenv.SkipFlakyNet(t)
t.Errorf("LookupSRV(xmpp-server, tcp, google.com): %v (mode=%v)", err, mode)
} else {
if !strings.HasSuffix(cname, ".google.com.") {