message: Skip Wycheproof tests when external files aren't available.
diff: @@ -157,6 +157,8 @@ type rsaSSAPKCS1Case struct {
  }
  func TestRSASSAPKCS1WycheproofCases(t *testing.T) {
  + testutil.SkipTestIfTestSrcDirIsNotSet(t)
  +
  testsRan := 0
  for _, v := range []string{
  "rsa_signature_2048_sha256_test.json",
  