Default TypeMapping is used on NULL and also empty typeMap parameter

Fixes utPLSQL/utPLSQL-cli#162

Author: pesse

src/main/java/org/utplsql/api/testRunner/FileMapper.java

@@ -64,7 +64,7 @@ private static Array buildFileMappingArray(
         callableStatement.setArray(
                 ++paramIdx, oraConn.createOracleArray(CustomTypes.UT_VARCHAR2_LIST, filePathsArray));
 
-        if (mapperOptions.getTypeMappings() == null) {
+        if (mapperOptions.getTypeMappings() == null || mapperOptions.getTypeMappings().size() == 0) {
             callableStatement.setNull(++paramIdx, Types.ARRAY, CustomTypes.UT_KEY_VALUE_PAIRS);
         } else {
             callableStatement.setArray(

src/test/java/org/utplsql/api/testRunner/FileMapperIT.java

@@ -1,5 +1,6 @@
 package org.utplsql.api.testRunner;
 
+import org.junit.jupiter.api.Nested;
 import org.junit.jupiter.api.Test;
 import org.utplsql.api.AbstractDatabaseTest;
 import org.utplsql.api.FileMapperOptions;
@@ -50,4 +51,37 @@ private void assertMapping(FileMapping fileMapping, String owner, String name, S
         assertEquals(type, fileMapping.getObjectType());
     }
 
+    @Nested
+    class Default_type_mapping {
+
+        void checkTypeMapping( List<KeyValuePair> typeMappings ) throws SQLException {
+            List<String> filePaths = java.util.Arrays.asList(
+                    "/award_bonus.prc",
+                    "/betwnstr.fnc",
+                    "/package_body.pkb",
+                    "/type_body.tpb",
+                    "/trigger.trg");
+            FileMapperOptions mapperOptions = new FileMapperOptions(filePaths);
+            mapperOptions.setTypeMappings(typeMappings);
+
+            List<FileMapping> fileMappings = FileMapper.buildFileMappingList(getConnection(), mapperOptions);
+
+            assertEquals("PROCEDURE", fileMappings.get(0).getObjectType());
+            assertEquals("FUNCTION", fileMappings.get(1).getObjectType());
+            assertEquals("PACKAGE BODY", fileMappings.get(2).getObjectType());
+            assertEquals("TYPE BODY", fileMappings.get(3).getObjectType());
+            assertEquals("TRIGGER", fileMappings.get(4).getObjectType());
+        }
+
+        @Test
+        void is_used_on_null_parameter() throws SQLException {
+            checkTypeMapping(null);
+        }
+
+        @Test
+        void is_used_on_empty_parameter() throws SQLException {
+            checkTypeMapping(new ArrayList<>());
+        }
+    }
+
 }