Add selection methods to grid that delegate to its selection model (#8315)

* Add selection methods to grid that delegate to the selection model

* Merge remote-tracking branch 'github/master' into 577-alt

* Remove getFirstSelected, isSelected

1 files changed, 55 insertions, 0 deletions

diff --git a/server/src/test/java/com/vaadin/tests/components/grid/GridDelegatesToSelectionModelTest.java b/server/src/test/java/com/vaadin/tests/components/grid/GridDelegatesToSelectionModelTest.java
new file mode 100644
index 0000000000..ae121d2e03
--- /dev/null
+++ b/server/src/test/java/com/vaadin/tests/components/grid/GridDelegatesToSelectionModelTest.java
@@ -0,0 +1,55 @@
+package com.vaadin.tests.components.grid;
+
+import static org.mockito.Mockito.verify;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mockito;
+
+import com.vaadin.ui.Grid;
+import com.vaadin.ui.components.grid.GridSelectionModel;
+
+public class GridDelegatesToSelectionModelTest {
+
+    private GridSelectionModel<String> selectionModelMock;
+
+    private CustomGrid grid;
+
+    private class CustomGrid extends Grid<String> {
+        CustomGrid() {
+            super();
+            setSelectionModel(selectionModelMock);
+        }
+    }
+
+    @Before
+    @SuppressWarnings("unchecked")
+    public void init() {
+        selectionModelMock = Mockito.mock(GridSelectionModel.class);
+        grid = new CustomGrid();
+    }
+
+    @Test
+    public void grid_getSelectedItems_delegated_to_SelectionModel() {
+        grid.getSelectedItems();
+        verify(selectionModelMock).getSelectedItems();
+    }
+
+    @Test
+    public void grid_select_delegated_to_SelectionModel() {
+        grid.select("");
+        verify(selectionModelMock).select("");
+    }
+
+    @Test
+    public void grid_deselect_delegated_to_SelectionModel() {
+        grid.deselect("");
+        verify(selectionModelMock).deselect("");
+    }
+
+    @Test
+    public void grid_deselectAll_delegated_to_SelectionModel() {
+        grid.deselectAll();
+        verify(selectionModelMock).deselectAll();
+    }
+}