[#3595] Add MockResult<init>(Record data) convenience constructor

jOOQ/src/main/java/org/jooq/tools/jdbc/MockResult.java

@@ -40,9 +40,15 @@
  */
 package org.jooq.tools.jdbc;
 
+import static org.jooq.impl.DSL.using;
+
 import java.sql.Statement;
 
+import org.jooq.AttachableInternal;
+import org.jooq.Configuration;
+import org.jooq.Record;
 import org.jooq.Result;
+import org.jooq.impl.DefaultConfiguration;
 
 /**
  * A mock result.
@@ -85,6 +91,17 @@ public class MockResult {
      */
     public final Result<?> data;
 
+    /**
+     * Create a new <code>MockResult</code>.
+     * <p>
+     * This is a convenience constructor creating a <code>MockResult</code> with exactly one record.
+     *
+     * @param data The single record in this result.
+     */
+    public MockResult(Record data) {
+        this(1, result(data));
+    }
+
     /**
      * Create a new <code>MockResult</code>.
      *
@@ -96,6 +113,17 @@ public class MockResult {
         this.data = data;
     }
 
+    private static final Result<?> result(Record data) {
+        Configuration configuration = data instanceof AttachableInternal
+            ? ((AttachableInternal) data).configuration()
+            : new DefaultConfiguration();
+
+        Result<Record> result = using(configuration).newResult(data.fields());
+        result.add(data);
+
+        return result;
+    }
+
     @Override
     public String toString() {
         return (data != null) ? data.toString() : ("" + rows);