Skip some recently added integration tests when LDAP is unavailable

Also refactor to use shared test helper for skipping LDAP and AD tests.

test/testlib/skip.go

@@ -1,4 +1,4 @@
-// Copyright 2020 the Pinniped contributors. All Rights Reserved.
+// Copyright 2020-2022 the Pinniped contributors. All Rights Reserved.
 // SPDX-License-Identifier: Apache-2.0
 
 package testlib
@@ -8,7 +8,28 @@ import "testing"
 // skipUnlessIntegration skips the current test if `-short` has been passed to `go test`.
 func skipUnlessIntegration(t *testing.T) {
 	t.Helper()
+
 	if testing.Short() {
 		t.Skip("skipping integration test because of '-short' flag")
 	}
 }
+
+func SkipTestWhenLDAPIsUnavailable(t *testing.T, env *TestEnv) {
+	t.Helper()
+
+	if len(env.ToolsNamespace) == 0 && !env.HasCapability(CanReachInternetLDAPPorts) {
+		t.Skip("LDAP integration test requires connectivity to an LDAP server")
+	}
+}
+
+func SkipTestWhenActiveDirectoryIsUnavailable(t *testing.T, env *TestEnv) {
+	t.Helper()
+
+	if !env.HasCapability(CanReachInternetLDAPPorts) {
+		t.Skip("Active Directory integration test requires network connectivity to an AD server")
+	}
+
+	if IntegrationEnv(t).SupervisorUpstreamActiveDirectory.Host == "" {
+		t.Skip("Active Directory hostname not specified")
+	}
+}