may use testcontainers to get a proper mysql

mondrian/pom.xml

@@ -156,18 +156,18 @@
       <version>${xmlunit.version}</version>
       <scope>test</scope>
     </dependency>
-<!--     <dependency> -->
-<!--       <groupId>org.mockito</groupId> -->
-<!--       <artifactId>mockito-all</artifactId> -->
-<!--       <version>${mockito-all.version}</version> -->
-<!--       <scope>test</scope> -->
-<!--     </dependency> -->
     <dependency>
       <groupId>org.mockito</groupId>
       <artifactId>mockito-core</artifactId>
       <version>4.1.0</version>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>org.testcontainers</groupId>
+      <artifactId>mysql</artifactId>
+      <version>1.16.2</version>
+      <scope>test</scope>
+    </dependency>
     <dependency>
       <groupId>javacup</groupId>
       <artifactId>javacup</artifactId>

mondrian/src/test/java/mondrian/olap4j/MondrianInprocProxy.java

@@ -0,0 +1,92 @@
+/*
+* This software is subject to the terms of the Eclipse Public License v1.0
+* Agreement, available at the following URL:
+* http://www.eclipse.org/legal/epl-v10.html.
+* You must accept the terms of that agreement to use this software.
+*
+* Copyright (c) 2002-2017 Hitachi Vantara..  All rights reserved.
+*/
+
+package mondrian.olap4j;
+
+import mondrian.olap.Util;
+import mondrian.tui.XmlaSupport;
+
+import org.apache.commons.collections.map.ReferenceMap;
+
+import org.olap4j.driver.xmla.XmlaOlap4jServerInfos;
+import org.olap4j.driver.xmla.proxy.XmlaOlap4jProxy;
+
+import java.util.*;
+import java.util.concurrent.*;
+
+/**
+ * Proxy which implements XMLA requests by talking to mondrian
+ * in-process. This is more convenient to debug than an inter-process
+ * request using HTTP.
+ *
+ * @author jhyde
+ */
+public class MondrianInprocProxy
+    implements XmlaOlap4jProxy
+{
+    private final ExecutorService executor =
+        Util.getExecutorService(
+            1, 1, 1, "MondrianInprocProxy$executor",
+            new ThreadPoolExecutor.CallerRunsPolicy());
+    private final Map<String, String> catalogNameUrls;
+    private final String urlString;
+    private final Map servletCache =
+        new ReferenceMap(ReferenceMap.HARD, ReferenceMap.WEAK);
+
+    /**
+     * Creates and initializes a MondrianInprocProxy.
+     *
+     * @param catalogNameUrls Collection of catalog names and the URL where
+     * their catalog is to be found. For testing purposes, this should contain
+     * a catalog called "FoodMart".
+     *
+     * @param urlString JDBC connect string; must begin with "jdbc:mondrian:"
+     */
+    public MondrianInprocProxy(
+        Map<String, String> catalogNameUrls,
+        String urlString)
+    {
+        this.catalogNameUrls = catalogNameUrls;
+        if (!urlString.startsWith("jdbc:mondrian:")) {
+            throw new IllegalArgumentException();
+        }
+        this.urlString = urlString.substring("jdbc:mondrian:".length());
+    }
+
+    public byte[] get(
+        XmlaOlap4jServerInfos infos,
+        String request)
+    {
+        try {
+            return XmlaSupport.processSoapXmla(
+                request, urlString, catalogNameUrls, null, null, servletCache);
+        } catch (Exception e) {
+            throw new RuntimeException(
+                "Error while reading '" + infos.getUrl() + "'", e);
+        }
+    }
+
+    public Future<byte[]> submit(
+        final XmlaOlap4jServerInfos infos,
+        final String request)
+    {
+        return this.executor.submit(
+            new Callable<byte[]>() {
+                public byte[] call() throws Exception {
+                    return get(infos, request);
+                }
+            });
+    }
+
+    public String getEncodingCharsetName() {
+        return "UTF-8";
+    }
+}
+
+// End MondrianInprocProxy.java

mondrian/src/test/java/mondrian/spi/impl/MicrosoftSqlServerDialectTest.java

@@ -17,11 +17,11 @@
 
 import java.sql.Connection;
 import java.sql.DatabaseMetaData;
+import java.sql.Statement;
 
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
-import com.mysql.jdbc.Statement;
 
 import mondrian.olap.Util;
 import mondrian.spi.Dialect;

mondrian/src/test/java/mondrian/spi/impl/MonetDbDialectTest.java

@@ -17,11 +17,12 @@
 
 import java.sql.Connection;
 import java.sql.DatabaseMetaData;
+import java.sql.Statement;
 
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
-import com.mysql.jdbc.Statement;
+
 
 import mondrian.spi.Dialect;
 

mondrian/src/test/java/mondrian/spi/impl/MySqlDialectTest.java

@@ -19,11 +19,11 @@
 
 import java.sql.Connection;
 import java.sql.DatabaseMetaData;
+import java.sql.Statement;
 
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
-import com.mysql.jdbc.Statement;
 
 import mondrian.spi.Dialect;
 

mondrian/src/test/java/mondrian/spi/impl/OracleDialectTest.java

@@ -17,11 +17,11 @@
 
 import java.sql.Connection;
 import java.sql.DatabaseMetaData;
+import java.sql.Statement;
 
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
-import com.mysql.jdbc.Statement;
 
 import mondrian.spi.Dialect;
 

mondrian/src/test/java/mondrian/spi/impl/PostgreSqlDialectTest.java

@@ -17,12 +17,12 @@
 
 import java.sql.Connection;
 import java.sql.DatabaseMetaData;
+import java.sql.Statement;
+
 
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
-import com.mysql.jdbc.Statement;
-
 import mondrian.spi.Dialect;
 
 public class PostgreSqlDialectTest{

mondrian/src/test/java/mondrian/spi/impl/RedshiftDialectTest.java

@@ -16,11 +16,12 @@
 
 import java.sql.Connection;
 import java.sql.DatabaseMetaData;
+import java.sql.Statement;
+
 
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
-import com.mysql.jdbc.Statement;
 
 import mondrian.spi.Dialect;
 

mondrian/src/test/java/mondrian/spi/impl/VerticaDialectTest.java

@@ -16,11 +16,11 @@
 
 import java.sql.Connection;
 import java.sql.DatabaseMetaData;
+import java.sql.Statement;
 
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
-import com.mysql.jdbc.Statement;
 
 import mondrian.spi.Dialect;
 

mondrian/src/test/java/mondrian/test/DelegatingTestContext.java

@@ -0,0 +1,45 @@
+/*
+* This software is subject to the terms of the Eclipse Public License v1.0
+* Agreement, available at the following URL:
+* http://www.eclipse.org/legal/epl-v10.html.
+* You must accept the terms of that agreement to use this software.
+*
+* Copyright (c) 2002-2017 Hitachi Vantara..  All rights reserved.
+*/
+
+package mondrian.test;
+
+import mondrian.olap.Util;
+
+import java.io.PrintWriter;
+
+/**
+ * Extension of {@link TestContext} which delegates all behavior to
+ * a parent test context.
+ *
+ * <p>Derived classes can selectively override methods.
+ *
+ * @author jhyde
+ * @since 7 September, 2005
+ */
+public class DelegatingTestContext extends TestContext {
+    protected final TestContext context;
+
+    protected DelegatingTestContext(TestContext context) {
+        this.context = context;
+    }
+
+    public Util.PropertyList getConnectionProperties() {
+        return context.getConnectionProperties();
+    }
+
+    public String getDefaultCubeName() {
+        return context.getDefaultCubeName();
+    }
+
+    public PrintWriter getWriter() {
+        return context.getWriter();
+    }
+}
+
+// End DelegatingTestContext.java