Do not write immediate to design if component is immediate by default (#7749)

Change-Id: Ia79844498c9f6ebc715d15039f7db8441e3565b9

1 files changed, 15 insertions, 0 deletions

diff --git a/server/tests/src/com/vaadin/tests/server/component/abstractcomponent/TestWriteDesign.java b/server/tests/src/com/vaadin/tests/server/component/abstractcomponent/TestWriteDesign.java
index 44c0e0b063..7f207a25ae 100644
--- a/server/tests/src/com/vaadin/tests/server/component/abstractcomponent/TestWriteDesign.java
+++ b/server/tests/src/com/vaadin/tests/server/component/abstractcomponent/TestWriteDesign.java
@@ -34,6 +34,7 @@ import com.vaadin.server.UserError;
 import com.vaadin.ui.AbstractComponent;
 import com.vaadin.ui.Button;
 import com.vaadin.ui.HorizontalSplitPanel;
+import com.vaadin.ui.TabSheet;
 import com.vaadin.ui.declarative.DesignContext;
 
 /**
@@ -137,6 +138,20 @@ public class TestWriteDesign extends TestCase {
         assertEquals("true", design.attr("immediate"));
     }
 
+    public void testSynchronizeImmediateByDefault() {
+        Element design = createDesign();
+        TabSheet byDefaultImmediate = new TabSheet();
+        // no immediate attribute should be written before setting immediate to
+        // false
+        byDefaultImmediate.writeDesign(design, ctx);
+        assertFalse(design.hasAttr("immediate"));
+        byDefaultImmediate.setImmediate(false);
+        byDefaultImmediate.writeDesign(design, ctx);
+        // we only changed one of the attributes, others are at default values
+        assertEquals(1, design.attributes().size());
+        assertEquals("false", design.attr("immediate"));
+    }
+
     public void testSynchronizeDescription() {
         Element design = createDesign();
         AbstractComponent component = getComponent();