Checkpoint

src/main/java/com/kingsrook/qqq/backend/core/actions/TableMetaDataAction.java

@@ -0,0 +1,36 @@
+package com.kingsrook.qqq.backend.core.actions;
+
+
+import com.kingsrook.qqq.backend.core.exceptions.QException;
+import com.kingsrook.qqq.backend.core.exceptions.QUserFacingException;
+import com.kingsrook.qqq.backend.core.model.actions.TableMetaDataRequest;
+import com.kingsrook.qqq.backend.core.model.actions.TableMetaDataResult;
+import com.kingsrook.qqq.backend.core.model.metadata.QTableMetaData;
+import com.kingsrook.qqq.backend.core.model.metadata.frontend.QFrontendTableMetaData;
+
+
+/*******************************************************************************
+ **
+ *******************************************************************************/
+public class TableMetaDataAction
+{
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   public TableMetaDataResult execute(TableMetaDataRequest tableMetaDataRequest) throws QException
+   {
+      // todo pre-customization - just get to modify the request?
+      TableMetaDataResult tableMetaDataResult = new TableMetaDataResult();
+
+      QTableMetaData table = tableMetaDataRequest.getInstance().getTable(tableMetaDataRequest.getTableName());
+      if(table == null)
+      {
+         throw (new QUserFacingException("Table [" + tableMetaDataRequest.getTableName() + "] was not found."));
+      }
+      tableMetaDataResult.setTable(new QFrontendTableMetaData(table, true));
+
+      // todo post-customization - can do whatever w/ the result if you want
+
+      return tableMetaDataResult;
+   }
+}

src/main/java/com/kingsrook/qqq/backend/core/exceptions/QUserFacingException.java

@@ -0,0 +1,29 @@
+package com.kingsrook.qqq.backend.core.exceptions;
+
+
+/*******************************************************************************
+ **
+ *******************************************************************************/
+public class QUserFacingException extends QException
+{
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   public QUserFacingException(String message)
+   {
+      super(message);
+   }
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   public QUserFacingException(String message, Throwable cause)
+   {
+      super(message, cause);
+   }
+
+}

src/main/java/com/kingsrook/qqq/backend/core/model/actions/TableMetaDataRequest.java

@@ -0,0 +1,54 @@
+package com.kingsrook.qqq.backend.core.model.actions;
+
+
+import com.kingsrook.qqq.backend.core.model.metadata.QInstance;
+
+
+/*******************************************************************************
+ **
+ *******************************************************************************/
+public class TableMetaDataRequest extends AbstractQRequest
+{
+   private String tableName;
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   public TableMetaDataRequest()
+   {
+   }
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   public TableMetaDataRequest(QInstance instance)
+   {
+      super(instance);
+   }
+
+
+
+   /*******************************************************************************
+    ** Getter for tableName
+    **
+    *******************************************************************************/
+   public String getTableName()
+   {
+      return tableName;
+   }
+
+
+
+   /*******************************************************************************
+    ** Setter for tableName
+    **
+    *******************************************************************************/
+   public void setTableName(String tableName)
+   {
+      this.tableName = tableName;
+   }
+}

src/main/java/com/kingsrook/qqq/backend/core/model/actions/TableMetaDataResult.java

@@ -0,0 +1,36 @@
+package com.kingsrook.qqq.backend.core.model.actions;
+
+
+import com.kingsrook.qqq.backend.core.model.metadata.frontend.QFrontendTableMetaData;
+
+
+/*******************************************************************************
+ * Result for a metaData action
+ *
+ *******************************************************************************/
+public class TableMetaDataResult extends AbstractQResult
+{
+   QFrontendTableMetaData table;
+
+
+
+   /*******************************************************************************
+    ** Getter for table
+    **
+    *******************************************************************************/
+   public QFrontendTableMetaData getTable()
+   {
+      return table;
+   }
+
+
+
+   /*******************************************************************************
+    ** Setter for table
+    **
+    *******************************************************************************/
+   public void setTable(QFrontendTableMetaData table)
+   {
+      this.table = table;
+   }
+}

src/main/java/com/kingsrook/qqq/backend/core/modules/QModuleDispatcher.java

@@ -23,8 +23,8 @@ public class QModuleDispatcher
    public QModuleDispatcher()
    {
       backendTypeToModuleClassNameMap = new HashMap<>();
+      backendTypeToModuleClassNameMap.put("mock", "com.kingsrook.qqq.backend.core.modules.mock.MockModule");
       backendTypeToModuleClassNameMap.put("rdbms", "com.kingsrook.qqq.backend.module.rdbms.RDBSMModule");
-      backendTypeToModuleClassNameMap.put("nosql", "com.kingsrook.qqq.backend.module.nosql.NoSQLModule");
       // todo - let user define custom type -> classes
    }
 

src/main/java/com/kingsrook/qqq/backend/core/modules/mock/MockInsertAction.java

@@ -0,0 +1,39 @@
+package com.kingsrook.qqq.backend.core.modules.mock;
+
+
+import com.kingsrook.qqq.backend.core.exceptions.QException;
+import com.kingsrook.qqq.backend.core.model.actions.InsertRequest;
+import com.kingsrook.qqq.backend.core.model.actions.InsertResult;
+import com.kingsrook.qqq.backend.core.model.data.QRecordWithStatus;
+import com.kingsrook.qqq.backend.core.modules.interfaces.InsertInterface;
+
+
+/*******************************************************************************
+ **
+ *******************************************************************************/
+public class MockInsertAction implements InsertInterface
+{
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   public InsertResult execute(InsertRequest insertRequest) throws QException
+   {
+      try
+      {
+         InsertResult rs = new InsertResult();
+
+         rs.setRecords(insertRequest.getRecords().stream().map(qRecord ->
+         {
+            return new QRecordWithStatus(qRecord);
+         }).toList());
+
+         return rs;
+      }
+      catch(Exception e)
+      {
+         throw new QException("Error executing insert: " + e.getMessage(), e);
+      }
+   }
+
+}

src/main/java/com/kingsrook/qqq/backend/core/modules/mock/MockModule.java

@@ -0,0 +1,33 @@
+package com.kingsrook.qqq.backend.core.modules.mock;
+
+
+import com.kingsrook.qqq.backend.core.modules.interfaces.InsertInterface;
+import com.kingsrook.qqq.backend.core.modules.interfaces.QModuleInterface;
+import com.kingsrook.qqq.backend.core.modules.interfaces.QueryInterface;
+
+
+/*******************************************************************************
+ **
+ *******************************************************************************/
+public class MockModule implements QModuleInterface
+{
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @Override
+   public QueryInterface getQueryInterface()
+   {
+      return new MockQueryAction();
+   }
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @Override
+   public InsertInterface getInsertInterface()
+   {
+      return (new MockInsertAction());
+   }
+}

src/main/java/com/kingsrook/qqq/backend/core/modules/mock/MockQueryAction.java

@@ -0,0 +1,51 @@
+package com.kingsrook.qqq.backend.core.modules.mock;
+
+
+import java.util.ArrayList;
+import java.util.List;
+import com.kingsrook.qqq.backend.core.exceptions.QException;
+import com.kingsrook.qqq.backend.core.model.actions.QueryRequest;
+import com.kingsrook.qqq.backend.core.model.actions.QueryResult;
+import com.kingsrook.qqq.backend.core.model.data.QRecord;
+import com.kingsrook.qqq.backend.core.model.metadata.QTableMetaData;
+import com.kingsrook.qqq.backend.core.modules.interfaces.QueryInterface;
+
+
+/*******************************************************************************
+ **
+ *******************************************************************************/
+public class MockQueryAction implements QueryInterface
+{
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   public QueryResult execute(QueryRequest queryRequest) throws QException
+   {
+      try
+      {
+         QTableMetaData table = queryRequest.getTable();
+
+         QueryResult rs = new QueryResult();
+         List<QRecord> records = new ArrayList<>();
+         rs.setRecords(records);
+
+         QRecord record = new QRecord();
+         records.add(record);
+         record.setTableName(table.getName());
+
+         for(String field : table.getFields().keySet())
+         {
+            record.setValue(field, "1");
+         }
+
+         return rs;
+      }
+      catch(Exception e)
+      {
+         e.printStackTrace();
+         throw new QException("Error executing query", e);
+      }
+   }
+
+}

src/main/java/com/kingsrook/qqq/backend/core/utils/CollectionUtils.java

@@ -251,7 +251,7 @@ public class CollectionUtils
    {
       List<List<T>> rs = new LinkedList<>();
 
-      if(values.isEmpty())
+      if(values == null || values.isEmpty())
       {
          //////////////////////////////////////////////////////////////////
          // if there are no input values, return an empty list of lists. //

src/main/java/com/kingsrook/qqq/backend/core/utils/ExceptionUtils.java

@@ -0,0 +1,34 @@
+package com.kingsrook.qqq.backend.core.utils;
+
+
+/*******************************************************************************
+ **
+ *******************************************************************************/
+public class ExceptionUtils
+{
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   public static <T extends Throwable> T findClassInRootChain(Throwable e, Class<T> targetClass)
+   {
+      if (e == null)
+      {
+         return (null);
+      }
+
+      if(e.getClass().equals(targetClass))
+      {
+         //noinspection unchecked
+         return ((T) e);
+      }
+
+      if(e.getCause() == null)
+      {
+         return (null);
+      }
+
+      return findClassInRootChain(e.getCause(), targetClass);
+   }
+
+}

src/test/java/com/kingsrook/qqq/backend/core/actions/InsertActionTest.java

@@ -0,0 +1,38 @@
+package com.kingsrook.qqq.backend.core.actions;
+
+
+import java.util.ArrayList;
+import java.util.List;
+import com.kingsrook.qqq.backend.core.exceptions.QException;
+import com.kingsrook.qqq.backend.core.model.actions.InsertRequest;
+import com.kingsrook.qqq.backend.core.model.actions.InsertResult;
+import com.kingsrook.qqq.backend.core.model.data.QRecord;
+import com.kingsrook.qqq.backend.core.utils.TestUtils;
+import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
+
+/*******************************************************************************
+ **
+ *******************************************************************************/
+class InsertActionTest
+{
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @Test
+   public void test() throws QException
+   {
+      InsertRequest request = new InsertRequest(TestUtils.defineInstance());
+      request.setTableName("person");
+      List<QRecord> records =new ArrayList<>();
+      QRecord record = new QRecord();
+      record.setValue("firstName", "James");
+      records.add(record);
+      request.setRecords(records);
+      InsertResult result = new InsertAction().execute(request);
+      assertNotNull(result);
+   }
+
+}

src/test/java/com/kingsrook/qqq/backend/core/actions/MetaDataActionTest.java

@@ -0,0 +1,32 @@
+package com.kingsrook.qqq.backend.core.actions;
+
+
+import com.kingsrook.qqq.backend.core.exceptions.QException;
+import com.kingsrook.qqq.backend.core.model.actions.MetaDataRequest;
+import com.kingsrook.qqq.backend.core.model.actions.MetaDataResult;
+import com.kingsrook.qqq.backend.core.utils.TestUtils;
+import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.*;
+
+
+/*******************************************************************************
+ **
+ *******************************************************************************/
+class MetaDataActionTest
+{
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @Test
+   public void test() throws QException
+   {
+      MetaDataRequest request = new MetaDataRequest(TestUtils.defineInstance());
+      MetaDataResult result = new MetaDataAction().execute(request);
+      assertNotNull(result);
+      assertNotNull(result.getTables());
+      assertNotNull(result.getTables().get("person"));
+      assertEquals("person", result.getTables().get("person").getName());
+      assertEquals("Person", result.getTables().get("person").getLabel());
+   }
+}

src/test/java/com/kingsrook/qqq/backend/core/actions/QueryActionTest.java

@@ -0,0 +1,29 @@
+package com.kingsrook.qqq.backend.core.actions;
+
+
+import com.kingsrook.qqq.backend.core.exceptions.QException;
+import com.kingsrook.qqq.backend.core.model.actions.QueryRequest;
+import com.kingsrook.qqq.backend.core.model.actions.QueryResult;
+import com.kingsrook.qqq.backend.core.utils.TestUtils;
+import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
+
+/*******************************************************************************
+ **
+ *******************************************************************************/
+class QueryActionTest
+{
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @Test
+   public void test() throws QException
+   {
+      QueryRequest request = new QueryRequest(TestUtils.defineInstance());
+      request.setTableName("person");
+      QueryResult result = new QueryAction().execute(request);
+      assertNotNull(result);
+   }
+}

src/test/java/com/kingsrook/qqq/backend/core/actions/TableMetaDataActionTest.java

@@ -0,0 +1,51 @@
+package com.kingsrook.qqq.backend.core.actions;
+
+
+import com.kingsrook.qqq.backend.core.exceptions.QException;
+import com.kingsrook.qqq.backend.core.exceptions.QUserFacingException;
+import com.kingsrook.qqq.backend.core.model.actions.TableMetaDataRequest;
+import com.kingsrook.qqq.backend.core.model.actions.TableMetaDataResult;
+import com.kingsrook.qqq.backend.core.utils.TestUtils;
+import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+
+/*******************************************************************************
+ **
+ *******************************************************************************/
+class TableMetaDataActionTest
+{
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @Test
+   public void test() throws QException
+   {
+      TableMetaDataRequest request = new TableMetaDataRequest(TestUtils.defineInstance());
+      request.setTableName("person");
+      TableMetaDataResult result = new TableMetaDataAction().execute(request);
+      assertNotNull(result);
+      assertNotNull(result.getTable());
+      assertEquals("person", result.getTable().getName());
+      assertEquals("Person", result.getTable().getLabel());
+   }
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @Test
+   public void test_notFound()
+   {
+      assertThrows(QUserFacingException.class, () -> {
+         TableMetaDataRequest request = new TableMetaDataRequest(TestUtils.defineInstance());
+         request.setTableName("willNotBeFound");
+         new TableMetaDataAction().execute(request);
+      });
+   }
+
+}

src/test/java/com/kingsrook/qqq/backend/core/instances/QInstanceEnricherTest.java

@@ -0,0 +1,66 @@
+package com.kingsrook.qqq.backend.core.instances;
+
+
+import com.kingsrook.qqq.backend.core.model.metadata.QFieldMetaData;
+import com.kingsrook.qqq.backend.core.model.metadata.QInstance;
+import com.kingsrook.qqq.backend.core.model.metadata.QTableMetaData;
+import com.kingsrook.qqq.backend.core.utils.TestUtils;
+import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
+
+
+/*******************************************************************************
+ **
+ *******************************************************************************/
+class QInstanceEnricherTest
+{
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @Test
+   public void test_nullTableLabelComesFromName()
+   {
+      QInstance qInstance = TestUtils.defineInstance();
+      QTableMetaData personTable = qInstance.getTable("person");
+      personTable.setLabel(null);
+      assertNull(personTable.getLabel());
+      new QInstanceEnricher().enrich(qInstance);
+      assertEquals("Person", personTable.getLabel());
+   }
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @Test
+   public void test_nullNameGivesNullLabel()
+   {
+      QInstance qInstance = TestUtils.defineInstance();
+      QTableMetaData personTable = qInstance.getTable("person");
+      personTable.setLabel(null);
+      personTable.setName(null);
+      assertNull(personTable.getLabel());
+      assertNull(personTable.getName());
+      new QInstanceEnricher().enrich(qInstance);
+      assertNull(personTable.getLabel());
+      assertNull(personTable.getName());
+   }
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @Test
+   public void test_nullFieldLabelComesFromName()
+   {
+      QInstance qInstance = TestUtils.defineInstance();
+      QFieldMetaData idField = qInstance.getTable("person").getField("id");
+      idField.setLabel(null);
+      assertNull(idField.getLabel());
+      new QInstanceEnricher().enrich(qInstance);
+      assertEquals("Id", idField.getLabel());
+   }
+
+}

src/test/java/com/kingsrook/qqq/backend/core/modules/QModuleDispatcherTest.java

@@ -0,0 +1,44 @@
+package com.kingsrook.qqq.backend.core.modules;
+
+
+import com.kingsrook.qqq.backend.core.exceptions.QModuleDispatchException;
+import com.kingsrook.qqq.backend.core.model.metadata.QBackendMetaData;
+import com.kingsrook.qqq.backend.core.modules.interfaces.QModuleInterface;
+import com.kingsrook.qqq.backend.core.utils.TestUtils;
+import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.*;
+
+
+/*******************************************************************************
+ **
+ *******************************************************************************/
+class QModuleDispatcherTest
+{
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @Test
+   public void test_getQModule_valid() throws QModuleDispatchException
+   {
+      QModuleInterface qModule = new QModuleDispatcher().getQModule(TestUtils.defineBackend());
+      assertNotNull(qModule);
+   }
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @Test
+   public void test_getQModule_typeNotFound()
+   {
+      assertThrows(QModuleDispatchException.class, () ->
+      {
+         QBackendMetaData qBackendMetaData = TestUtils.defineBackend();
+         qBackendMetaData.setType("aTypeThatWontEverExist");
+         new QModuleDispatcher().getQModule(qBackendMetaData);
+      });
+   }
+
+}

src/test/java/com/kingsrook/qqq/backend/core/utils/CollectionUtilsTest.java

@@ -0,0 +1,391 @@
+package com.kingsrook.qqq.backend.core.utils;
+
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.function.Function;
+import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+
+/*******************************************************************************
+ **
+ *******************************************************************************/
+class CollectionUtilsTest
+{
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @Test
+   void test_nullSafeIsEmpty_Map()
+   {
+      assertTrue(CollectionUtils.nullSafeIsEmpty(Collections.emptyMap()));
+      assertTrue(CollectionUtils.nullSafeIsEmpty(new HashMap<>()));
+      assertTrue(CollectionUtils.nullSafeIsEmpty((Map<?, ?>) null));
+      Map<String, Integer> myMap = new HashMap<>();
+      assertTrue(CollectionUtils.nullSafeIsEmpty(myMap));
+      myMap.put("A", 1);
+      assertFalse(CollectionUtils.nullSafeIsEmpty(myMap));
+      myMap.clear();
+      assertTrue(CollectionUtils.nullSafeIsEmpty(myMap));
+   }
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @Test
+   void test_nullSafeIsEmpty_Collection()
+   {
+      assertTrue(CollectionUtils.nullSafeIsEmpty(Collections.emptyList()));
+      assertTrue(CollectionUtils.nullSafeIsEmpty(new ArrayList<>()));
+      assertTrue(CollectionUtils.nullSafeIsEmpty((List<?>) null));
+      List<String> myList = new ArrayList<>();
+      assertTrue(CollectionUtils.nullSafeIsEmpty(myList));
+      myList.add("A");
+      assertFalse(CollectionUtils.nullSafeIsEmpty(myList));
+      myList.clear();
+      assertTrue(CollectionUtils.nullSafeIsEmpty(myList));
+   }
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @Test
+   void test_nullSafeHasContents_Map()
+   {
+      assertFalse(CollectionUtils.nullSafeHasContents(Collections.emptyMap()));
+      assertFalse(CollectionUtils.nullSafeHasContents(new HashMap<>()));
+      assertFalse(CollectionUtils.nullSafeHasContents((Map<?, ?>) null));
+      Map<String, Integer> myMap = new HashMap<>();
+      assertFalse(CollectionUtils.nullSafeHasContents(myMap));
+      myMap.put("A", 1);
+      assertTrue(CollectionUtils.nullSafeHasContents(myMap));
+      myMap.clear();
+      assertFalse(CollectionUtils.nullSafeHasContents(myMap));
+   }
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @Test
+   void test_nullSafeHasContents_Collection()
+   {
+      assertFalse(CollectionUtils.nullSafeHasContents(Collections.emptyList()));
+      assertFalse(CollectionUtils.nullSafeHasContents(new ArrayList<>()));
+      assertFalse(CollectionUtils.nullSafeHasContents((List<?>) null));
+      List<String> myList = new ArrayList<>();
+      assertFalse(CollectionUtils.nullSafeHasContents(myList));
+      myList.add("A");
+      assertTrue(CollectionUtils.nullSafeHasContents(myList));
+      myList.clear();
+      assertFalse(CollectionUtils.nullSafeHasContents(myList));
+   }
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @Test
+   void test_nullSafeSize_Map()
+   {
+      assertEquals(0, CollectionUtils.nullSafeSize(Collections.emptyMap()));
+      assertEquals(0, CollectionUtils.nullSafeSize(new HashMap<>()));
+      assertEquals(0, CollectionUtils.nullSafeSize((Map<?, ?>) null));
+      Map<String, Integer> myMap = new HashMap<>();
+      assertEquals(0, CollectionUtils.nullSafeSize(myMap));
+      myMap.put("A", 1);
+      assertEquals(1, CollectionUtils.nullSafeSize(myMap));
+   }
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @Test
+   void test_nullSafeSize_Collection()
+   {
+      assertEquals(0, CollectionUtils.nullSafeSize(Collections.emptyList()));
+      assertEquals(0, CollectionUtils.nullSafeSize(new ArrayList<>()));
+      assertEquals(0, CollectionUtils.nullSafeSize((List<?>) null));
+      List<String> myList = new ArrayList<>();
+      assertEquals(0, CollectionUtils.nullSafeSize(myList));
+      myList.add("A");
+      assertEquals(1, CollectionUtils.nullSafeSize(myList));
+   }
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @SuppressWarnings("ConstantConditions")
+   @Test
+   void test_addAllToMap()
+   {
+      Map<String, Integer> to = new HashMap<>();
+      Map<String, Integer> from = new HashMap<>();
+
+      assertThrows(NullPointerException.class, () -> CollectionUtils.addAllToMap(null, null));
+      assertThrows(NullPointerException.class, () -> CollectionUtils.addAllToMap(to, null));
+
+      // this case does not currently throw - capture that fact here in case we change it.
+      CollectionUtils.addAllToMap(null, from);
+
+      CollectionUtils.addAllToMap(to, from);
+      assertEquals(0, to.size());
+
+      from.put("A", 1);
+      CollectionUtils.addAllToMap(to, from);
+      assertEquals(1, to.size());
+      assertEquals(1, to.get("A"));
+
+      from.put("B", 2);
+      CollectionUtils.addAllToMap(to, from);
+      assertEquals(2, to.size());
+      assertEquals(1, to.get("A"));
+      assertEquals(2, to.get("B"));
+
+      from.put("B", 3);
+      CollectionUtils.addAllToMap(to, from);
+      assertEquals(2, to.size());
+      assertEquals(1, to.get("A"));
+      assertEquals(3, to.get("B"));
+   }
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @Test
+   void test_listToMap()
+   {
+      assertNull(CollectionUtils.listToMap(null, null));
+
+      List<String> myList = new ArrayList<>();
+      myList.add("Apple");
+      myList.add("Banana");
+      assertThrows(NullPointerException.class, () -> CollectionUtils.listToMap(myList, null));
+
+      Map<String, String> myMap = CollectionUtils.listToMap(myList, first());
+      assertEquals(2, myMap.size());
+      assertEquals("Apple", myMap.get("A"));
+      assertEquals("Banana", myMap.get("B"));
+
+      // confirm what a clobbered key does
+      myList.add("Airplane");
+      myMap = CollectionUtils.listToMap(myList, first());
+      assertEquals(2, myMap.size());
+      assertEquals("Airplane", myMap.get("A"));
+   }
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @Test
+   void test_listToMap_valueFunction()
+   {
+      assertNull(CollectionUtils.listToMap(null, null, null));
+
+      List<String> myList = new ArrayList<>();
+      myList.add("Apple");
+      myList.add("Banana");
+      assertThrows(NullPointerException.class, () -> CollectionUtils.listToMap(myList, null, null));
+
+      Map<String, String> myMap = CollectionUtils.listToMap(myList, first(), rest());
+      assertEquals(2, myMap.size());
+      assertEquals("pple", myMap.get("A"));
+      assertEquals("anana", myMap.get("B"));
+
+      // confirm what a clobbered key does
+      myList.add("Airplane");
+      myMap = CollectionUtils.listToMap(myList, first(), rest());
+      assertEquals(2, myMap.size());
+      assertEquals("irplane", myMap.get("A"));
+   }
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @Test
+   void test_listToListingHash()
+   {
+      assertNull(CollectionUtils.listToListingHash(null, null));
+
+      List<String> myList = new ArrayList<>();
+      myList.add("Apple");
+      myList.add("Banana");
+      assertThrows(NullPointerException.class, () -> CollectionUtils.listToListingHash(myList, null));
+
+      ListingHash<String, String> myListingHash = CollectionUtils.listToListingHash(myList, first());
+      assertEquals(2, myListingHash.size());
+      assertEquals(1, myListingHash.get("A").size());
+      assertEquals("Apple", myListingHash.get("A").get(0));
+      assertEquals(1, myListingHash.get("B").size());
+      assertEquals("Banana", myListingHash.get("B").get(0));
+
+      myList.add("Airplane");
+      myListingHash = CollectionUtils.listToListingHash(myList, first());
+      assertEquals(2, myListingHash.size());
+      assertEquals(2, myListingHash.get("A").size());
+      assertEquals("Apple", myListingHash.get("A").get(0));
+      assertEquals("Airplane", myListingHash.get("A").get(1));
+      assertEquals(1, myListingHash.get("B").size());
+      assertEquals("Banana", myListingHash.get("B").get(0));
+   }
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @Test
+   void test_listToListingHash_valueFunction()
+   {
+      assertNull(CollectionUtils.listToListingHash(null, null, null));
+
+      List<String> myList = new ArrayList<>();
+      myList.add("Apple");
+      myList.add("Banana");
+      assertThrows(NullPointerException.class, () -> CollectionUtils.listToListingHash(myList, null, null));
+
+      ListingHash<String, String> myListingHash = CollectionUtils.listToListingHash(myList, first(), rest());
+      assertEquals(2, myListingHash.size());
+      assertEquals(1, myListingHash.get("A").size());
+      assertEquals("pple", myListingHash.get("A").get(0));
+      assertEquals(1, myListingHash.get("B").size());
+      assertEquals("anana", myListingHash.get("B").get(0));
+
+      myList.add("Airplane");
+      myListingHash = CollectionUtils.listToListingHash(myList, first(), rest());
+      assertEquals(2, myListingHash.size());
+      assertEquals(2, myListingHash.get("A").size());
+      assertEquals("pple", myListingHash.get("A").get(0));
+      assertEquals("irplane", myListingHash.get("A").get(1));
+      assertEquals(1, myListingHash.get("B").size());
+      assertEquals("anana", myListingHash.get("B").get(0));
+   }
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @Test
+   void test_listTo2LevelMap()
+   {
+      assertNull(CollectionUtils.listTo2LevelMap(null, null, null));
+
+      List<String> myList = new ArrayList<>();
+      myList.add("Apple");
+      myList.add("Banana");
+      myList.add("Airplane");
+      assertThrows(NullPointerException.class, () -> CollectionUtils.listTo2LevelMap(myList, null, null));
+      assertThrows(NullPointerException.class, () -> CollectionUtils.listTo2LevelMap(myList, first(), null));
+      assertThrows(NullPointerException.class, () -> CollectionUtils.listTo2LevelMap(myList, null, second()));
+
+      Map<String, Map<String, String>> myMap = CollectionUtils.listTo2LevelMap(myList, first(), second());
+      assertEquals(2, myMap.size());
+      assertEquals(2, myMap.get("A").size());
+      assertEquals("Apple", myMap.get("A").get("p"));
+      assertEquals("Airplane", myMap.get("A").get("i"));
+      assertEquals(1, myMap.get("B").size());
+      assertEquals("Banana", myMap.get("B").get("a"));
+
+      // demonstrate clobbering behavior
+      myList.add("Ape");
+      myMap = CollectionUtils.listTo2LevelMap(myList, first(), second());
+      assertEquals(2, myMap.get("A").size());
+      assertEquals("Ape", myMap.get("A").get("p"));
+   }
+
+
+
+   /*******************************************************************************
+    ** helper method to get rest of string (unsafely)
+    *******************************************************************************/
+   private Function<String, String> rest()
+   {
+      return s -> s.substring(1);
+   }
+
+
+
+   /*******************************************************************************
+    ** helper method to get first char of string (unsafely)
+    *******************************************************************************/
+   private Function<String, String> first()
+   {
+      return s -> s.substring(0, 1);
+   }
+
+   /*******************************************************************************
+    ** helper method to get second char of string (unsafely)
+    *******************************************************************************/
+   private Function<String, String> second()
+   {
+      return s -> s.substring(1, 2);
+   }
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @Test
+   void test_getPages()
+   {
+      List<List<Integer>> pages = CollectionUtils.getPages(null, 5);
+      assertEquals(0, pages.size());
+
+      pages = CollectionUtils.getPages(Collections.emptyList(), 5);
+      assertEquals(0, pages.size());
+
+      pages = CollectionUtils.getPages(List.of(1, 2, 3), 5);
+      assertEquals(1, pages.size());
+      assertEquals(3, pages.get(0).size());
+
+      pages = CollectionUtils.getPages(List.of(1, 2, 3, 4, 5), 5);
+      assertEquals(1, pages.size());
+      assertEquals(5, pages.get(0).size());
+
+      pages = CollectionUtils.getPages(List.of(1, 2, 3, 4, 5, 6, 7), 5);
+      assertEquals(2, pages.size());
+      assertEquals(5, pages.get(0).size());
+      assertEquals(2, pages.get(1).size());
+   }
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @Test
+   void test_getQuestionMarks()
+   {
+      assertEquals("", CollectionUtils.getQuestionMarks(null));
+      assertEquals("", CollectionUtils.getQuestionMarks(Collections.emptyList()));
+      assertEquals("?", CollectionUtils.getQuestionMarks(List.of(1)));
+      assertEquals("?,?,?", CollectionUtils.getQuestionMarks(List.of(1, 2, 3)));
+   }
+}

src/test/java/com/kingsrook/qqq/backend/core/utils/ExceptionUtilsTest.java

@@ -0,0 +1,29 @@
+package com.kingsrook.qqq.backend.core.utils;
+
+
+import com.kingsrook.qqq.backend.core.exceptions.QException;
+import com.kingsrook.qqq.backend.core.exceptions.QUserFacingException;
+import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.*;
+
+
+/*******************************************************************************
+ **
+ *******************************************************************************/
+class ExceptionUtilsTest
+{
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @Test
+   void findClassInRootChain()
+   {
+      assertNull(ExceptionUtils.findClassInRootChain(null, QUserFacingException.class));
+      QUserFacingException target = new QUserFacingException("target");
+
+      assertSame(target, ExceptionUtils.findClassInRootChain(target, QUserFacingException.class));
+      assertSame(target, ExceptionUtils.findClassInRootChain(new QException("decoy", target), QUserFacingException.class));
+      assertNull(ExceptionUtils.findClassInRootChain(new QException("decoy", target), IllegalArgumentException.class));
+   }
+}

src/test/java/com/kingsrook/qqq/backend/core/utils/JsonUtilsTest.java

@@ -67,6 +67,24 @@ class JsonUtilsTest
 
 
 
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @Test
+   public void test_toJSONObject_malformed()
+   {
+      // todo - what do we want to throw here?
+      assertThrows(JSONException.class, () ->
+      {
+         JsonUtils.toJSONObject("""
+            {
+               "Foo": "Bar",
+            """);
+      });
+   }
+
+
+
    /*******************************************************************************
     **
     *******************************************************************************/

src/test/java/com/kingsrook/qqq/backend/core/utils/TestUtils.java

@@ -33,12 +33,7 @@ public class TestUtils
    {
       return new QBackendMetaData()
          .withName("default")
-         .withType("rdbms")
+         .withType("mock");
-         .withValue("vendor", "h2")
-         .withValue("hostName", "mem")
-         .withValue("databaseName", "test_database")
-         .withValue("username", "sa")
-         .withValue("password", "");
    }