Convert value if locale changes and field has converter (#11419)

Change-Id: Icb33ee2db9e36d4282c19b46203054a2da4abdbd

1 files changed, 63 insertions, 0 deletions

diff --git a/server/tests/src/com/vaadin/ui/AbstractFieldDataSourceLocaleChange.java b/server/tests/src/com/vaadin/ui/AbstractFieldDataSourceLocaleChange.java
new file mode 100644
index 0000000000..9810873f0b
--- /dev/null
+++ b/server/tests/src/com/vaadin/ui/AbstractFieldDataSourceLocaleChange.java
@@ -0,0 +1,63 @@
+package com.vaadin.ui;
+
+import java.text.NumberFormat;
+import java.util.Locale;
+
+import junit.framework.Assert;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import com.vaadin.data.util.converter.StringToIntegerConverter;
+import com.vaadin.server.VaadinRequest;
+import com.vaadin.server.VaadinSession;
+
+public class AbstractFieldDataSourceLocaleChange {
+
+    private VaadinSession vaadinSession;
+    private UI ui;
+
+    @Before
+    public void setup() {
+        vaadinSession = new VaadinSession(null);
+        VaadinSession.setCurrent(vaadinSession);
+        ui = new UI() {
+
+            @Override
+            protected void init(VaadinRequest request) {
+
+            }
+        };
+        ui.setSession(vaadinSession);
+        UI.setCurrent(ui);
+    }
+
+    @Test
+    public void localeChangesOnAttach() {
+        TextField tf = new TextField();
+
+        ;
+        tf.setConverter(new StringToIntegerConverter() {
+            @Override
+            protected NumberFormat getFormat(Locale locale) {
+                if (locale == null) {
+                    NumberFormat format = super.getFormat(locale);
+                    format.setGroupingUsed(false);
+                    format.setMinimumIntegerDigits(10);
+                    return format;
+                }
+                return super.getFormat(locale);
+            }
+        });
+        tf.setImmediate(true);
+        tf.setConvertedValue(10000);
+        Assert.assertEquals("0000010000", tf.getValue());
+
+        VerticalLayout vl = new VerticalLayout();
+        ui.setContent(vl);
+        ui.setLocale(new Locale("en", "US"));
+
+        vl.addComponent(tf);
+        Assert.assertEquals("10,000", tf.getValue());
+    }
+}