[sint] new presence subscription tests

This adds a few basic tests that verify that presence subscription stanzas are received 'as intended', notably when they include extension elements.

smack-integration-test/src/main/java/org/jivesoftware/smack/subscription/SubscriptionIntegrationTest.java

@@ -0,0 +1,195 @@
+/**
+ * Copyright 2021 Guus der Kinderen
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.jivesoftware.smack.subscription;
+
+import org.jivesoftware.smack.AbstractXMPPConnection;
+import org.jivesoftware.smack.packet.Presence;
+import org.jivesoftware.smack.packet.StandardExtensionElement;
+
+import org.igniterealtime.smack.inttest.AbstractSmackIntegrationTest;
+import org.igniterealtime.smack.inttest.SmackIntegrationTestEnvironment;
+import org.igniterealtime.smack.inttest.annotations.SmackIntegrationTest;
+import org.igniterealtime.smack.inttest.util.IntegrationTestRosterUtil;
+import org.igniterealtime.smack.inttest.util.SimpleResultSyncPoint;
+
+/**
+ * Integration tests that verify that sent presence subscription requests are received as intended.
+ *
+ * @author Guus der Kinderen, [email protected]
+ */
+public class SubscriptionIntegrationTest extends AbstractSmackIntegrationTest {
+
+    public SubscriptionIntegrationTest(SmackIntegrationTestEnvironment environment) {
+        super(environment);
+    }
+
+    /**
+     * This test verifies that a subscription request is received.
+     *
+     * @throws Exception on anything unexpected or undesired.
+     */
+    @SmackIntegrationTest
+    public void testSubscriptionRequest() throws Exception {
+        IntegrationTestRosterUtil.ensureBothAccountsAreNotInEachOthersRoster(conOne, conTwo);
+
+        final Presence subscriptionRequest = conTwo.getStanzaFactory().buildPresenceStanza()
+                .ofType(Presence.Type.subscribe)
+                .to(conOne.getUser())
+                .build();
+
+        final SimpleResultSyncPoint received = new SimpleResultSyncPoint();
+
+        conOne.addAsyncStanzaListener(p -> received.signal(),
+                stanza -> {
+                    if (!(stanza instanceof Presence)) {
+                        return false;
+                    }
+                    if (!stanza.getFrom().asBareJid().equals(conTwo.getUser().asBareJid())) {
+                        return false;
+                    }
+                    final Presence presence = (Presence) stanza;
+                    return Presence.Type.subscribe.equals(presence.getType());
+                }
+        );
+
+        conTwo.sendStanza(subscriptionRequest);
+        received.waitForResult(timeout);
+    }
+
+    /**
+     * This test verifies that a subscription request is received, in a scenario where the intended recipient was
+     * offline when the request was made.
+     *
+     * @throws Exception on anything unexpected or undesired.
+     */
+    @SmackIntegrationTest
+    public void testSubscriptionRequestOffline() throws Exception {
+        IntegrationTestRosterUtil.ensureBothAccountsAreNotInEachOthersRoster(conOne, conTwo);
+
+        ((AbstractXMPPConnection) conOne).disconnect();
+
+        final Presence subscriptionRequest = conTwo.getStanzaFactory().buildPresenceStanza()
+                .ofType(Presence.Type.subscribe)
+                .to(conOne.getUser())
+                .build();
+
+        conTwo.sendStanza(subscriptionRequest);
+
+        ((AbstractXMPPConnection) conOne).connect();
+
+        final SimpleResultSyncPoint received = new SimpleResultSyncPoint();
+
+        conOne.addAsyncStanzaListener(p -> received.signal(),
+                stanza -> {
+                    if (!(stanza instanceof Presence)) {
+                        return false;
+                    }
+                    if (!stanza.getFrom().asBareJid().equals(conTwo.getUser().asBareJid())) {
+                        return false;
+                    }
+                    final Presence presence = (Presence) stanza;
+                    return Presence.Type.subscribe.equals(presence.getType());
+                }
+        );
+
+        ((AbstractXMPPConnection) conOne).login();
+        received.waitForResult(timeout);
+    }
+
+    /**
+     * When a subscription request is made, the stanza can have additional extension elements. This test verifies that
+     * such extension elements are received.
+     *
+     * @throws Exception on anything unexpected or undesired.
+     */
+    @SmackIntegrationTest
+    public void testSubscriptionRequestWithExtension() throws Exception {
+        IntegrationTestRosterUtil.ensureBothAccountsAreNotInEachOthersRoster(conOne, conTwo);
+
+        final Presence subscriptionRequest = conTwo.getStanzaFactory().buildPresenceStanza()
+                .ofType(Presence.Type.subscribe)
+                .to(conOne.getUser())
+                .addExtension(new StandardExtensionElement("test", "org.example.test"))
+                .build();
+
+        final SimpleResultSyncPoint received = new SimpleResultSyncPoint();
+
+        conOne.addAsyncStanzaListener(p -> received.signal(),
+                stanza -> {
+                    if (!(stanza instanceof Presence)) {
+                        return false;
+                    }
+                    if (!stanza.getFrom().asBareJid().equals(conTwo.getUser().asBareJid())) {
+                        return false;
+                    }
+                    final Presence presence = (Presence) stanza;
+                    if (!Presence.Type.subscribe.equals(presence.getType())) {
+                        return false;
+                    }
+                    return stanza.hasExtension("test", "org.example.test");
+                }
+        );
+
+        conTwo.sendStanza(subscriptionRequest);
+        received.waitForResult(timeout);
+    }
+
+    /**
+     * When a subscription request is made, the stanza can have additional extension elements. This test verifies that
+     * such extension elements are received, in a scenario where the intended recipient was offline when the request
+     * was made.
+     *
+     * @see <a href="https://igniterealtime.atlassian.net/browse/OF-2244">Openfire issue OF-2244</a>
+     * @throws Exception on anything unexpected or undesired.
+     */
+    @SmackIntegrationTest
+    public void testSubscriptionRequestOfflineWithExtension() throws Exception {
+        IntegrationTestRosterUtil.ensureBothAccountsAreNotInEachOthersRoster(conOne, conTwo);
+
+        ((AbstractXMPPConnection) conOne).disconnect();
+
+        final Presence subscriptionRequest = conTwo.getStanzaFactory().buildPresenceStanza()
+                .ofType(Presence.Type.subscribe)
+                .to(conOne.getUser())
+                .addExtension(new StandardExtensionElement("test", "org.example.test"))
+                .build();
+
+        conTwo.sendStanza(subscriptionRequest);
+
+        ((AbstractXMPPConnection) conOne).connect();
+
+        final SimpleResultSyncPoint received = new SimpleResultSyncPoint();
+
+        conOne.addAsyncStanzaListener(p -> received.signal(),
+                stanza -> {
+                    if (!(stanza instanceof Presence)) {
+                        return false;
+                    }
+                    if (!stanza.getFrom().asBareJid().equals(conTwo.getUser().asBareJid())) {
+                        return false;
+                    }
+                    final Presence presence = (Presence) stanza;
+                    if (!Presence.Type.subscribe.equals(presence.getType())) {
+                        return false;
+                    }
+                    return stanza.hasExtension("test", "org.example.test");
+                }
+        );
+
+        ((AbstractXMPPConnection) conOne).login();
+        received.waitForResult(timeout);
+    }
+}

smack-integration-test/src/main/java/org/jivesoftware/smack/subscription/package-info.java

@@ -0,0 +1,20 @@
+/**
+ * Copyright 2021 Guus der Kinderen
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Integration Tests for presence subscription exchange.
+ */
+package org.jivesoftware.smack.subscription;