Arsnael commented on code in PR #1673:
URL: https://github.com/apache/james-project/pull/1673#discussion_r1300885950


##########
mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/quota/CassandraQuotaCurrentValueDaoTest.java:
##########
@@ -0,0 +1,136 @@
+/****************************************************************
+ * 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.james.mailbox.cassandra.quota;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatRuntimeException;
+
+import org.apache.james.backends.cassandra.CassandraClusterExtension;
+import org.apache.james.backends.cassandra.components.CassandraModule;
+import org.apache.james.core.Username;
+import org.apache.james.core.quota.QuotaComponent;
+import org.apache.james.core.quota.QuotaCurrentValue;
+import org.apache.james.core.quota.QuotaType;
+import org.apache.james.mailbox.cassandra.mail.utils.GuiceUtils;
+import org.apache.james.mailbox.cassandra.modules.CassandraQuotaModule;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
+
+public class CassandraQuotaCurrentValueDaoTest {
+
+    private static final CassandraQuotaCurrentValueDao.QuotaKey QUOTA_KEY
+        = CassandraQuotaCurrentValueDao.QuotaKey.of(QuotaComponent.MAILBOX, 
Username.of("[email protected]"), QuotaType.SIZE);
+
+    private CassandraQuotaCurrentValueDao cassandraQuotaCurrentValueDao;
+
+    @RegisterExtension
+    static CassandraClusterExtension cassandraCluster = new 
CassandraClusterExtension(CassandraModule.aggregateModules(CassandraQuotaModule.MODULE));
+
+    @BeforeEach
+    private void setup() {
+        cassandraQuotaCurrentValueDao = 
GuiceUtils.testInjector(cassandraCluster.getCassandraCluster()).getInstance(CassandraQuotaCurrentValueDao.class);
+        resetCounterToZero();

Review Comment:
   Why not just dropping the quota, that it exists or not? Takes one line :)
   
   ```
   cassandraQuotaCurrentValueDao.deleteQuotaCurrentValue(QUOTA_KEY).block();
   ```



##########
mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/quota/CassandraQuotaCurrentValueDaoTest.java:
##########
@@ -0,0 +1,136 @@
+/****************************************************************
+ * 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.james.mailbox.cassandra.quota;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatRuntimeException;
+
+import org.apache.james.backends.cassandra.CassandraClusterExtension;
+import org.apache.james.backends.cassandra.components.CassandraModule;
+import org.apache.james.core.Username;
+import org.apache.james.core.quota.QuotaComponent;
+import org.apache.james.core.quota.QuotaCurrentValue;
+import org.apache.james.core.quota.QuotaType;
+import org.apache.james.mailbox.cassandra.mail.utils.GuiceUtils;
+import org.apache.james.mailbox.cassandra.modules.CassandraQuotaModule;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
+
+public class CassandraQuotaCurrentValueDaoTest {
+
+    private static final CassandraQuotaCurrentValueDao.QuotaKey QUOTA_KEY
+        = CassandraQuotaCurrentValueDao.QuotaKey.of(QuotaComponent.MAILBOX, 
Username.of("[email protected]"), QuotaType.SIZE);
+
+    private CassandraQuotaCurrentValueDao cassandraQuotaCurrentValueDao;
+
+    @RegisterExtension
+    static CassandraClusterExtension cassandraCluster = new 
CassandraClusterExtension(CassandraModule.aggregateModules(CassandraQuotaModule.MODULE));
+
+    @BeforeEach
+    private void setup() {
+        cassandraQuotaCurrentValueDao = 
GuiceUtils.testInjector(cassandraCluster.getCassandraCluster()).getInstance(CassandraQuotaCurrentValueDao.class);
+        resetCounterToZero();
+    }
+
+    private void resetCounterToZero() {
+        cassandraQuotaCurrentValueDao.increase(QUOTA_KEY, 0).block();
+        QuotaCurrentValue quotaCurrentValue = 
cassandraQuotaCurrentValueDao.getQuotaCurrentValue(QUOTA_KEY).block();
+        cassandraQuotaCurrentValueDao.decrease(QUOTA_KEY, 
quotaCurrentValue.getCurrentValue()).block();
+        QuotaCurrentValue actual = 
cassandraQuotaCurrentValueDao.getQuotaCurrentValue(QUOTA_KEY).block();
+        assertThat(actual.getCurrentValue()).isEqualTo(0l);
+    }
+
+    @Test
+    void increaseQuotaCurrentValueShouldCreateNewRowSuccessfully() {
+        QuotaCurrentValue expected = 
QuotaCurrentValue.builder().quotaComponent(QUOTA_KEY.getQuotaComponent())
+            
.identifier(QUOTA_KEY.getIdentifier()).quotaType(QUOTA_KEY.getQuotaType()).currentValue(100l).build();
+        cassandraQuotaCurrentValueDao.increase(QUOTA_KEY, 100l).block();
+
+        QuotaCurrentValue actual = 
cassandraQuotaCurrentValueDao.getQuotaCurrentValue(QUOTA_KEY).block();
+        assertThat(actual).isEqualTo(expected);
+    }
+
+    @Test
+    void 
increaseQuotaCurrentValueShouldCreateNewRowSuccessfullyWhenIncreaseAmountIsZero()
 {
+        QuotaCurrentValue expected = 
QuotaCurrentValue.builder().quotaComponent(QUOTA_KEY.getQuotaComponent())
+            
.identifier(QUOTA_KEY.getIdentifier()).quotaType(QUOTA_KEY.getQuotaType()).currentValue(0l).build();
+        cassandraQuotaCurrentValueDao.increase(QUOTA_KEY, 0l).block();
+
+        QuotaCurrentValue actual = 
cassandraQuotaCurrentValueDao.getQuotaCurrentValue(QUOTA_KEY).block();
+        assertThat(actual).isEqualTo(expected);
+    }
+
+    @Test
+    void increaseQuotaCurrentValueShouldIncreaseValueSuccessfully() {
+        QuotaCurrentValue expected = 
QuotaCurrentValue.builder().quotaComponent(QUOTA_KEY.getQuotaComponent())
+            
.identifier(QUOTA_KEY.getIdentifier()).quotaType(QUOTA_KEY.getQuotaType()).currentValue(200l).build();
+        cassandraQuotaCurrentValueDao.increase(QUOTA_KEY, 100l).block();
+        cassandraQuotaCurrentValueDao.increase(QUOTA_KEY, 100l).block();
+
+        QuotaCurrentValue actual = 
cassandraQuotaCurrentValueDao.getQuotaCurrentValue(QUOTA_KEY).block();
+        assertThat(actual).isEqualTo(expected);
+    }
+
+    @Test
+    void 
increaseQuotaCurrentValueShouldDecreaseValueSuccessfullyWhenIncreaseAmountIsNegative()
 {
+        QuotaCurrentValue expected = 
QuotaCurrentValue.builder().quotaComponent(QUOTA_KEY.getQuotaComponent())
+            
.identifier(QUOTA_KEY.getIdentifier()).quotaType(QUOTA_KEY.getQuotaType()).currentValue(100l).build();
+        cassandraQuotaCurrentValueDao.increase(QUOTA_KEY, 200l).block();
+        cassandraQuotaCurrentValueDao.increase(QUOTA_KEY, -100l).block();

Review Comment:
   Is that supposed to be possible? Should use decrease instead of increase 
with negative? Should we have a precondition check on increase and decrease 
operations that it should be strictly positive numbers?



##########
mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/quota/CassandraQuotaCurrentValueDaoTest.java:
##########
@@ -0,0 +1,136 @@
+/****************************************************************
+ * 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.james.mailbox.cassandra.quota;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatRuntimeException;
+
+import org.apache.james.backends.cassandra.CassandraClusterExtension;
+import org.apache.james.backends.cassandra.components.CassandraModule;
+import org.apache.james.core.Username;
+import org.apache.james.core.quota.QuotaComponent;
+import org.apache.james.core.quota.QuotaCurrentValue;
+import org.apache.james.core.quota.QuotaType;
+import org.apache.james.mailbox.cassandra.mail.utils.GuiceUtils;
+import org.apache.james.mailbox.cassandra.modules.CassandraQuotaModule;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
+
+public class CassandraQuotaCurrentValueDaoTest {
+
+    private static final CassandraQuotaCurrentValueDao.QuotaKey QUOTA_KEY
+        = CassandraQuotaCurrentValueDao.QuotaKey.of(QuotaComponent.MAILBOX, 
Username.of("[email protected]"), QuotaType.SIZE);
+
+    private CassandraQuotaCurrentValueDao cassandraQuotaCurrentValueDao;
+
+    @RegisterExtension
+    static CassandraClusterExtension cassandraCluster = new 
CassandraClusterExtension(CassandraModule.aggregateModules(CassandraQuotaModule.MODULE));
+
+    @BeforeEach
+    private void setup() {
+        cassandraQuotaCurrentValueDao = 
GuiceUtils.testInjector(cassandraCluster.getCassandraCluster()).getInstance(CassandraQuotaCurrentValueDao.class);
+        resetCounterToZero();
+    }
+
+    private void resetCounterToZero() {
+        cassandraQuotaCurrentValueDao.increase(QUOTA_KEY, 0).block();
+        QuotaCurrentValue quotaCurrentValue = 
cassandraQuotaCurrentValueDao.getQuotaCurrentValue(QUOTA_KEY).block();
+        cassandraQuotaCurrentValueDao.decrease(QUOTA_KEY, 
quotaCurrentValue.getCurrentValue()).block();
+        QuotaCurrentValue actual = 
cassandraQuotaCurrentValueDao.getQuotaCurrentValue(QUOTA_KEY).block();
+        assertThat(actual.getCurrentValue()).isEqualTo(0l);
+    }
+
+    @Test
+    void increaseQuotaCurrentValueShouldCreateNewRowSuccessfully() {
+        QuotaCurrentValue expected = 
QuotaCurrentValue.builder().quotaComponent(QUOTA_KEY.getQuotaComponent())
+            
.identifier(QUOTA_KEY.getIdentifier()).quotaType(QUOTA_KEY.getQuotaType()).currentValue(100l).build();
+        cassandraQuotaCurrentValueDao.increase(QUOTA_KEY, 100l).block();
+
+        QuotaCurrentValue actual = 
cassandraQuotaCurrentValueDao.getQuotaCurrentValue(QUOTA_KEY).block();
+        assertThat(actual).isEqualTo(expected);
+    }
+
+    @Test
+    void 
increaseQuotaCurrentValueShouldCreateNewRowSuccessfullyWhenIncreaseAmountIsZero()
 {
+        QuotaCurrentValue expected = 
QuotaCurrentValue.builder().quotaComponent(QUOTA_KEY.getQuotaComponent())
+            
.identifier(QUOTA_KEY.getIdentifier()).quotaType(QUOTA_KEY.getQuotaType()).currentValue(0l).build();
+        cassandraQuotaCurrentValueDao.increase(QUOTA_KEY, 0l).block();
+
+        QuotaCurrentValue actual = 
cassandraQuotaCurrentValueDao.getQuotaCurrentValue(QUOTA_KEY).block();
+        assertThat(actual).isEqualTo(expected);
+    }
+
+    @Test
+    void increaseQuotaCurrentValueShouldIncreaseValueSuccessfully() {
+        QuotaCurrentValue expected = 
QuotaCurrentValue.builder().quotaComponent(QUOTA_KEY.getQuotaComponent())
+            
.identifier(QUOTA_KEY.getIdentifier()).quotaType(QUOTA_KEY.getQuotaType()).currentValue(200l).build();
+        cassandraQuotaCurrentValueDao.increase(QUOTA_KEY, 100l).block();
+        cassandraQuotaCurrentValueDao.increase(QUOTA_KEY, 100l).block();
+
+        QuotaCurrentValue actual = 
cassandraQuotaCurrentValueDao.getQuotaCurrentValue(QUOTA_KEY).block();
+        assertThat(actual).isEqualTo(expected);
+    }
+
+    @Test
+    void 
increaseQuotaCurrentValueShouldDecreaseValueSuccessfullyWhenIncreaseAmountIsNegative()
 {
+        QuotaCurrentValue expected = 
QuotaCurrentValue.builder().quotaComponent(QUOTA_KEY.getQuotaComponent())
+            
.identifier(QUOTA_KEY.getIdentifier()).quotaType(QUOTA_KEY.getQuotaType()).currentValue(100l).build();
+        cassandraQuotaCurrentValueDao.increase(QUOTA_KEY, 200l).block();
+        cassandraQuotaCurrentValueDao.increase(QUOTA_KEY, -100l).block();
+
+        QuotaCurrentValue actual = 
cassandraQuotaCurrentValueDao.getQuotaCurrentValue(QUOTA_KEY).block();
+        assertThat(actual).isEqualTo(expected);
+    }
+
+    @Test
+    void decreaseQuotaCurrentValueShouldDecreaseValueSuccessfully() {
+        QuotaCurrentValue expected = 
QuotaCurrentValue.builder().quotaComponent(QUOTA_KEY.getQuotaComponent())
+            
.identifier(QUOTA_KEY.getIdentifier()).quotaType(QUOTA_KEY.getQuotaType()).currentValue(100l).build();
+        cassandraQuotaCurrentValueDao.increase(QUOTA_KEY, 200l).block();
+        cassandraQuotaCurrentValueDao.decrease(QUOTA_KEY, 100l).block();
+
+        QuotaCurrentValue actual = 
cassandraQuotaCurrentValueDao.getQuotaCurrentValue(QUOTA_KEY).block();
+        assertThat(actual).isEqualTo(expected);
+    }
+

Review Comment:
   What happens if I try to decrease below 0?



##########
mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/quota/CassandraQuotaLimitDaoTest.java:
##########
@@ -0,0 +1,91 @@
+/****************************************************************
+ * 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.james.mailbox.cassandra.quota;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.util.Arrays;
+import java.util.List;
+
+import org.apache.james.backends.cassandra.CassandraClusterExtension;
+import org.apache.james.backends.cassandra.components.CassandraModule;
+import org.apache.james.blob.cassandra.CassandraBlobModule;
+import org.apache.james.core.quota.QuotaComponent;
+import org.apache.james.core.quota.QuotaLimit;
+import org.apache.james.core.quota.QuotaScope;
+import org.apache.james.core.quota.QuotaType;
+import org.apache.james.mailbox.cassandra.mail.utils.GuiceUtils;
+import org.apache.james.mailbox.cassandra.modules.CassandraQuotaModule;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
+
+public class CassandraQuotaLimitDaoTest {
+
+    private CassandraQuotaLimitDao cassandraQuotaLimitDao;
+
+    @RegisterExtension
+    static CassandraClusterExtension cassandraCluster = new 
CassandraClusterExtension(CassandraModule.aggregateModules(CassandraQuotaModule.MODULE));
+
+    @BeforeEach
+    private void setup() {
+        cassandraQuotaLimitDao = 
GuiceUtils.testInjector(cassandraCluster.getCassandraCluster()).getInstance(CassandraQuotaLimitDao.class);
+    }
+
+    @Test
+    void getQuotaLimitsShouldGetSomeQuotaLimitsSuccessfully() {
+        QuotaLimit expectedOne = 
QuotaLimit.builder().quotaComponent(QuotaComponent.MAILBOX).quotaScope(QuotaScope.DOMAIN).identifier("A").quotaType(QuotaType.COUNT).quotaLimit(200l).build();
+        QuotaLimit expectedTwo = 
QuotaLimit.builder().quotaComponent(QuotaComponent.MAILBOX).quotaScope(QuotaScope.DOMAIN).identifier("A").quotaType(QuotaType.SIZE).quotaLimit(100l).build();
+        cassandraQuotaLimitDao.setQuotaLimit(expectedOne).block();
+        cassandraQuotaLimitDao.setQuotaLimit(expectedTwo).block();
+
+        
assertThat(cassandraQuotaLimitDao.getQuotaLimits(QuotaComponent.MAILBOX, 
QuotaScope.DOMAIN, "A").collectList().block())
+            .containsExactlyInAnyOrder(expectedOne, expectedTwo);
+    }
+
+    @Test
+    void setQuotaLimitShouldSaveObjectSuccessfully() {
+        QuotaLimit expected = 
QuotaLimit.builder().quotaComponent(QuotaComponent.MAILBOX).quotaScope(QuotaScope.DOMAIN).identifier("A").quotaType(QuotaType.COUNT).quotaLimit(100l).build();
+        cassandraQuotaLimitDao.setQuotaLimit(expected).block();
+
+        
assertThat(cassandraQuotaLimitDao.getQuotaLimit(CassandraQuotaLimitDao.QuotaLimitKey.of(QuotaComponent.MAILBOX,
 QuotaScope.DOMAIN, "A", QuotaType.COUNT)).block())
+            .isEqualTo(expected);
+    }
+
+    @Test
+    void setQuotaLimitShouldSaveObjectSuccessfullyWhenLimitIsMinusOne() {
+        QuotaLimit expected = 
QuotaLimit.builder().quotaComponent(QuotaComponent.MAILBOX).quotaScope(QuotaScope.DOMAIN).identifier("A").quotaType(QuotaType.COUNT).quotaLimit(-1l).build();
+        cassandraQuotaLimitDao.setQuotaLimit(expected).block();
+
+        
assertThat(cassandraQuotaLimitDao.getQuotaLimit(CassandraQuotaLimitDao.QuotaLimitKey.of(QuotaComponent.MAILBOX,
 QuotaScope.DOMAIN, "A", QuotaType.COUNT)).block())
+            .isEqualTo(expected);
+    }
+
+    @Test
+    void deleteQuotaLimitShouldDeleteObjectSuccessfully() {
+        QuotaLimit quotaLimit = 
QuotaLimit.builder().quotaComponent(QuotaComponent.MAILBOX).quotaScope(QuotaScope.DOMAIN).identifier("A").quotaType(QuotaType.COUNT).quotaLimit(100l).build();
+        cassandraQuotaLimitDao.setQuotaLimit(quotaLimit).block();
+        
cassandraQuotaLimitDao.deleteQuotaLimit(CassandraQuotaLimitDao.QuotaLimitKey.of(QuotaComponent.MAILBOX,
 QuotaScope.DOMAIN, "A", QuotaType.COUNT)).block();
+
+        
assertThat(cassandraQuotaLimitDao.getQuotaLimit(CassandraQuotaLimitDao.QuotaLimitKey.of(QuotaComponent.MAILBOX,
 QuotaScope.DOMAIN, "A", QuotaType.COUNT)).block())
+            .isNull();
+    }
+

Review Comment:
   What happens if I try to set quota limit to -100?



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