content: /*
   * 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.kafka.streams.state.internals;
  
  import org.apache.kafka.common.serialization.Serdes;
  import org.apache.kafka.common.utils.MockTime;
  import org.apache.kafka.streams.processor.StateStore;
  import org.apache.kafka.streams.state.VersionedBytesStore;
  import org.apache.kafka.streams.state.VersionedBytesStoreSupplier;
  import org.apache.kafka.streams.state.VersionedKeyValueStore;
  
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.extension.ExtendWith;
  import org.mockito.Mock;
  import org.mockito.junit.jupiter.MockitoExtension;
  import org.mockito.junit.jupiter.MockitoSettings;
  import org.mockito.quality.Strictness;
  
  import java.util.Collections;
  
  import static org.hamcrest.MatcherAssert.assertThat;
  import static org.hamcrest.Matchers.equalTo;
  import static org.hamcrest.core.IsInstanceOf.instanceOf;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  import static org.mockito.Mockito.when;
  
  @ExtendWith(MockitoExtension.class)
  @MockitoSettings(strictness = Strictness.STRICT_STUBS)
  public class VersionedKeyValueStoreBuilderTest {
  
      private static final String STORE_NAME = "versioned-store";
      private static final String METRICS_SCOPE = "metrics-scope";
  
      @Mock
      private VersionedBytesStoreSupplier supplier;
      @Mock
      private VersionedBytesStore inner;
  
      private VersionedKeyValueStoreBuilder<String, String> builder;
  
      private void setUpWithoutInner() {
          when(supplier.name()).thenReturn(STORE_NAME);
          when(supplier.metricsScope()).thenReturn(METRICS_SCOPE);
  
          builder = new VersionedKeyValueStoreBuilder<>(
              supplier,
              Serdes.String(),
              Serdes.String(),
              new MockTime()
          );
      }
  
      private void setUp() {
          when(supplier.get()).thenReturn(inner);
          setUpWithoutInner();
      }
  
      @Test
      public void shouldHaveMeteredStoreAsOuterStore() {
          setUp();
          final VersionedKeyValueStore<String, String> store = builder.build();
  
          assertThat(store, instanceOf(MeteredVersionedKeyValueStore.class));
      }
  
      @Test
      public void shouldHaveChangeLoggingStoreByDefault() {
          setUp();
          final VersionedKeyValueStore<String, String> store = builder.build();
  
          assertThat(store, instanceOf(MeteredVersionedKeyValueStore.class));
          final StateStore next = ((WrappedStateStore) store).wrapped();
          assertThat(next, instanceOf(ChangeLoggingVersionedKeyValueBytesStore.class));
      }
  
      @Test
      public void shouldNotHaveChangeLoggingStoreWhenDisabled() {
          setUp();
          final VersionedKeyValueStore<String, String> store = builder
              .withLoggingDisabled()
              .build();
  
          assertThat(store, instanceOf(MeteredVersionedKeyValueStore.class));
          final StateStore next = ((WrappedStateStore) store).wrapped();
          assertThat(next, equalTo(inner));
  
      }
  
      @Test
      public void shouldHaveChangeLoggingStoreWhenLoggingEnabled() {
          setUp();
          final VersionedKeyValueStore<String, String> store = builder
              .withLoggingEnabled(Collections.emptyMap())
              .build();
  
          assertThat(store, instanceOf(MeteredVersionedKeyValueStore.class));
          final StateStore next = ((WrappedStateStore) store).wrapped();
          assertThat(next, instanceOf(ChangeLoggingVersionedKeyValueBytesStore.class));
          assertThat(((WrappedStateStore) next).wrapped(), equalTo(inner));
      }
  
      @Test
      public void shouldThrowWhenCachingEnabled() {
          setUpWithoutInner();
          assertThrows(IllegalStateException.class, () -> builder.withCachingEnabled());
      }
  
      @SuppressWarnings("all")
      @Test
      public void shouldThrowNullPointerIfInnerIsNull() {
          setUpWithoutInner();
          assertThrows(NullPointerException.class, () -> new VersionedKeyValueStoreBuilder<>(null, Serdes.String(), Serdes.String(), new MockTime()));
      }
  
      @Test
      public void shouldNotThrowNullPointerIfKeySerdeIsNull() {
          setUpWithoutInner();
          // does not throw
          new VersionedKeyValueStoreBuilder<>(supplier, null, Serdes.String(), new MockTime());
      }
  
      @Test
      public void shouldNotThrowNullPointerIfValueSerdeIsNull() {
          setUpWithoutInner();
          // does not throw
          new VersionedKeyValueStoreBuilder<>(supplier, Serdes.String(), null, new MockTime());
      }
  
      @Test
      public void shouldThrowNullPointerIfTimeIsNull() {
          setUpWithoutInner();
          assertThrows(NullPointerException.class, () -> new VersionedKeyValueStoreBuilder<>(supplier, Serdes.String(), Serdes.String(), null));
      }
  
      @Test
      public void shouldThrowNullPointerIfNameIsNull() {
          setUpWithoutInner();
          when(supplier.name()).thenReturn(null);
  
          assertThrows(NullPointerException.class, () -> new VersionedKeyValueStoreBuilder<>(supplier, Serdes.String(), Serdes.String(), new MockTime()));
      }
  
      @Test
      public void shouldThrowNullPointerIfMetricsScopeIsNull() {
          setUpWithoutInner();
          when(supplier.metricsScope()).thenReturn(null);
  
          assertThrows(NullPointerException.class, () -> new VersionedKeyValueStoreBuilder<>(supplier, Serdes.String(), Serdes.String(), new MockTime()));
      }
  }