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|
package testutils
import (
"errors"
"os"
"strings"
"testing"
"github.com/cilium/ebpf/internal"
"github.com/cilium/ebpf/internal/linux"
)
const (
ignoreVersionEnvVar = "EBPF_TEST_IGNORE_VERSION"
)
func CheckFeatureTest(t *testing.T, fn func() error) {
checkFeatureTestError(t, fn())
}
func checkFeatureTestError(t *testing.T, err error) {
if err == nil {
return
}
var ufe *internal.UnsupportedFeatureError
if errors.As(err, &ufe) {
checkVersion(t, ufe)
} else {
t.Error("Feature test failed:", err)
}
}
func CheckFeatureMatrix[K comparable](t *testing.T, fm internal.FeatureMatrix[K]) {
t.Helper()
for key, ft := range fm {
t.Run(ft.Name, func(t *testing.T) {
checkFeatureTestError(t, fm.Result(key))
})
}
}
func SkipIfNotSupported(tb testing.TB, err error) {
tb.Helper()
if err == internal.ErrNotSupported {
tb.Fatal("Unwrapped ErrNotSupported")
}
var ufe *internal.UnsupportedFeatureError
if errors.As(err, &ufe) {
checkVersion(tb, ufe)
tb.Skip(ufe.Error())
}
if errors.Is(err, internal.ErrNotSupported) {
tb.Skip(err.Error())
}
}
func SkipIfNotSupportedOnOS(tb testing.TB, err error) {
tb.Helper()
if err == internal.ErrNotSupportedOnOS {
tb.Fatal("Unwrapped ErrNotSupportedOnOS")
}
if errors.Is(err, internal.ErrNotSupportedOnOS) {
tb.Skip(err.Error())
}
}
func checkVersion(tb testing.TB, ufe *internal.UnsupportedFeatureError) {
if ufe.MinimumVersion.Unspecified() {
return
}
tb.Helper()
if ignoreVersionCheck(tb.Name()) {
tb.Logf("Ignoring error due to %s: %s", ignoreVersionEnvVar, ufe.Error())
return
}
if !isKernelLessThan(tb, ufe.MinimumVersion) {
tb.Fatalf("Feature '%s' isn't supported even though kernel is newer than %s",
ufe.Name, ufe.MinimumVersion)
}
}
func SkipOnOldKernel(tb testing.TB, minVersion, feature string) {
tb.Helper()
if IsKernelLessThan(tb, minVersion) {
tb.Skipf("Test requires at least kernel %s (due to missing %s)", minVersion, feature)
}
}
func IsKernelLessThan(tb testing.TB, minVersion string) bool {
tb.Helper()
minv, err := internal.NewVersion(minVersion)
if err != nil {
tb.Fatalf("Invalid version %s: %s", minVersion, err)
}
return isKernelLessThan(tb, minv)
}
func isKernelLessThan(tb testing.TB, minv internal.Version) bool {
tb.Helper()
if max := os.Getenv("CI_MAX_KERNEL_VERSION"); max != "" {
maxv, err := internal.NewVersion(max)
if err != nil {
tb.Fatalf("Invalid version %q in CI_MAX_KERNEL_VERSION: %s", max, err)
}
if maxv.Less(minv) {
tb.Fatalf("Test for %s will never execute on CI since %s is the most recent kernel", minv, maxv)
}
}
return kernelVersion(tb).Less(minv)
}
func kernelVersion(tb testing.TB) internal.Version {
tb.Helper()
v, err := linux.KernelVersion()
if err != nil {
tb.Fatal(err)
}
return v
}
// ignoreVersionCheck checks whether to omit the version check for a test.
//
// It reads a comma separated list of test names from an environment variable.
//
// For example:
//
// EBPF_TEST_IGNORE_VERSION=TestABC,TestXYZ go test ...
func ignoreVersionCheck(tName string) bool {
tNames := os.Getenv(ignoreVersionEnvVar)
if tNames == "" {
return false
}
ignored := strings.Split(tNames, ",")
for _, n := range ignored {
if strings.TrimSpace(n) == tName {
return true
}
}
return false
}
|
