Add getter for JGrid corner renderer

Author: charphi

java-desktop-util-swing/src/main/java/ec/util/grid/swing/JGrid.java

@@ -174,6 +174,10 @@ public void setRowRenderer(TableCellRenderer renderer) {
         fct.getFixedTable().setDefaultRenderer(Object.class, renderer);
     }
 
+    public TableCellRenderer getCornerRenderer() {
+        return fct.getFixedTable().getTableHeader().getDefaultRenderer();
+    }
+
     public void setCornerRenderer(TableCellRenderer renderer) {
         fct.getFixedTable().getTableHeader().setDefaultRenderer(renderer);
     }
@@ -494,10 +498,6 @@ public void setGridModel(GridModel gridModel) {
             fireTableStructureChanged();
         }
 
-        public GridModel getGridModel() {
-            return gridModel;
-        }
-
         public boolean hasData() {
             return gridModel.getRowCount() > 0 || gridModel.getColumnCount() > 0;
         }

java-desktop-util-swing/src/test/java/ec/util/grid/swing/JGridTest.java

@@ -0,0 +1,31 @@
+package ec.util.grid.swing;
+
+import org.junit.jupiter.api.Test;
+
+import javax.swing.table.DefaultTableCellRenderer;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class JGridTest {
+
+    @Test
+    public void testRenderers() {
+        JGrid x = new JGrid();
+
+        DefaultTableCellRenderer corner = new DefaultTableCellRenderer();
+        DefaultTableCellRenderer column = new DefaultTableCellRenderer();
+        DefaultTableCellRenderer row = new DefaultTableCellRenderer();
+
+        assertThat(x.getCornerRenderer()).isNotEqualTo(corner);
+        assertThat(x.getColumnRenderer()).isNotEqualTo(column);
+        assertThat(x.getRowRenderer()).isNotEqualTo(row);
+
+        x.setCornerRenderer(corner);
+        x.setColumnRenderer(column);
+        x.setRowRenderer(row);
+
+        assertThat(x.getCornerRenderer()).isEqualTo(corner);
+        assertThat(x.getColumnRenderer()).isEqualTo(column);
+        assertThat(x.getRowRenderer()).isEqualTo(row);
+    }
+}