[HUDI-1576] Make archiving an async service (#4795)

hudi-client/hudi-client-common/src/test/java/org/apache/hudi/async/TestAsyncArchiveService.java

@@ -0,0 +1,75 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.apache.hudi.async;
+
+import org.apache.hudi.client.BaseHoodieWriteClient;
+import org.apache.hudi.config.HoodieWriteConfig;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.Mock;
+import org.mockito.junit.jupiter.MockitoExtension;
+
+import java.util.concurrent.ExecutionException;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+@ExtendWith(MockitoExtension.class)
+class TestAsyncArchiveService {
+
+  @Mock
+  BaseHoodieWriteClient writeClient;
+  @Mock
+  HoodieWriteConfig config;
+
+  @Test
+  void startAsyncArchiveReturnsNullWhenAutoArchiveDisabled() {
+    when(config.isAutoArchive()).thenReturn(false);
+    when(writeClient.getConfig()).thenReturn(config);
+    assertNull(AsyncArchiveService.startAsyncArchiveIfEnabled(writeClient));
+  }
+
+  @Test
+  void startAsyncArchiveReturnsNullWhenAsyncArchiveDisabled() {
+    when(config.isAutoArchive()).thenReturn(true);
+    when(config.isAsyncArchive()).thenReturn(false);
+    when(writeClient.getConfig()).thenReturn(config);
+    assertNull(AsyncArchiveService.startAsyncArchiveIfEnabled(writeClient));
+  }
+
+  @Test
+  void startAsyncArchiveIfEnabled() {
+    when(config.isAutoArchive()).thenReturn(true);
+    when(config.isAsyncArchive()).thenReturn(true);
+    when(writeClient.getConfig()).thenReturn(config);
+    assertNotNull(AsyncArchiveService.startAsyncArchiveIfEnabled(writeClient));
+  }
+
+  @Test
+  void startServiceShouldInvokeCallArchiveMethod() throws ExecutionException, InterruptedException {
+    AsyncArchiveService service = new AsyncArchiveService(writeClient);
+    assertEquals(true, service.startService().getLeft().get());
+    verify(writeClient).archive();
+  }
+}