[merge from 6.7] #8793 Add unit test for TabSheet.replaceComponent()

svn changeset:23758/svn branch:6.8

tests/server-side/com/vaadin/tests/server/component/tabsheet/TestTabSheet.java

@@ -2,6 +2,8 @@ package com.vaadin.tests.server.component.tabsheet;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertSame;
 
 import java.util.Iterator;
 
@@ -158,4 +160,65 @@ public class TestTabSheet {
         tabSheet.setSelectedTab(123);
         assertEquals(tab1.getComponent(), tabSheet.getSelectedTab());
     }
+
+    @Test
+    public void replaceComponent() {
+        TabSheet tabSheet = new TabSheet();
+        Label lbl1 = new Label("aaa");
+        Label lbl2 = new Label("bbb");
+        Label lbl3 = new Label("ccc");
+        Label lbl4 = new Label("ddd");
+
+        Tab tab1 = tabSheet.addTab(lbl1);
+        tab1.setCaption("tab1");
+        tab1.setClosable(true);
+        Tab tab2 = tabSheet.addTab(lbl2);
+        tab2.setDescription("description");
+        tab2.setEnabled(false);
+
+        // Replace component not in tabsheet with one already in tabsheet -
+        // should be no-op
+        tabSheet.replaceComponent(lbl3, lbl2);
+        assertEquals(2, tabSheet.getComponentCount());
+        assertSame(tab1, tabSheet.getTab(lbl1));
+        assertSame(tab2, tabSheet.getTab(lbl2));
+        assertNull(tabSheet.getTab(lbl3));
+
+        // Replace component not in tabsheet with one not in tabsheet either
+        // should add lbl4 as last tab
+        tabSheet.replaceComponent(lbl3, lbl4);
+        assertEquals(3, tabSheet.getComponentCount());
+        assertSame(tab1, tabSheet.getTab(lbl1));
+        assertSame(tab2, tabSheet.getTab(lbl2));
+        assertEquals(2, tabSheet.getTabPosition(tabSheet.getTab(lbl4)));
+
+        // Replace component in tabsheet with another
+        // should swap places, tab association should stay the same but tabs
+        // should swap metadata
+        tabSheet.replaceComponent(lbl1, lbl2);
+        assertSame(tab1, tabSheet.getTab(lbl1));
+        assertSame(tab2, tabSheet.getTab(lbl2));
+        assertEquals(false, tab1.isClosable());
+        assertEquals(true, tab2.isClosable());
+        assertEquals(false, tab1.isEnabled());
+        assertEquals(true, tab2.isEnabled());
+        assertEquals("description", tab1.getDescription());
+        assertEquals(null, tab2.getDescription());
+        assertEquals(3, tabSheet.getComponentCount());
+        assertEquals(1, tabSheet.getTabPosition(tabSheet.getTab(lbl1)));
+        assertEquals(0, tabSheet.getTabPosition(tabSheet.getTab(lbl2)));
+
+        // Replace component in tabsheet with one not in tabsheet
+        // should create a new tab instance for the new component, old tab
+        // instance should become unattached
+        // tab metadata should be copied from old to new
+        tabSheet.replaceComponent(lbl1, lbl3);
+        assertEquals(3, tabSheet.getComponentCount());
+        assertNull(tabSheet.getTab(lbl1));
+        assertNull(tab1.getComponent());
+        assertNotNull(tabSheet.getTab(lbl3));
+        assertEquals(false, tabSheet.getTab(lbl3).isEnabled());
+        assertEquals("description", tab1.getDescription());
+        assertEquals(1, tabSheet.getTabPosition(tabSheet.getTab(lbl3)));
+    }
 }