Implement LocalDateRenderer and LocalDateTimeRenderer (#8955)

Closes #8377

2 files changed, 97 insertions, 0 deletions

diff --git a/uitest/src/main/java/com/vaadin/tests/components/grid/LocalDateRenderers.java b/uitest/src/main/java/com/vaadin/tests/components/grid/LocalDateRenderers.java
new file mode 100644
index 0000000000..e31154eb84
--- /dev/null
+++ b/uitest/src/main/java/com/vaadin/tests/components/grid/LocalDateRenderers.java
@@ -0,0 +1,59 @@
+package com.vaadin.tests.components.grid;
+
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+import java.time.format.FormatStyle;
+import java.util.Locale;
+
+import com.vaadin.server.VaadinRequest;
+import com.vaadin.tests.components.AbstractTestUI;
+import com.vaadin.ui.Grid;
+import com.vaadin.ui.renderers.LocalDateRenderer;
+import com.vaadin.ui.renderers.LocalDateTimeRenderer;
+
+public class LocalDateRenderers extends AbstractTestUI {
+
+    private static class TimeBean {
+        private LocalDate localDate;
+        private LocalDateTime localDateTime;
+
+        public TimeBean() {
+            localDate = LocalDate.ofEpochDay(0);
+            localDateTime = localDate.atTime(0, 0);
+        }
+
+        public LocalDate getLocalDate() {
+            return localDate;
+        }
+
+        public LocalDateTime getLocalDateTime() {
+            return localDateTime;
+        }
+    }
+
+    @Override
+    protected void setup(VaadinRequest request) {
+        DateTimeFormatter finnishDateFormatter = DateTimeFormatter
+                .ofLocalizedDate(FormatStyle.LONG).withLocale(new Locale("fi"));
+        DateTimeFormatter finnishDateTimeFormatter = DateTimeFormatter
+                .ofLocalizedDateTime(FormatStyle.LONG)
+                .withLocale(new Locale("fi"));
+
+        Grid<TimeBean> grid = new Grid<>();
+        grid.setLocale(new Locale("en"));
+        grid.addColumn(TimeBean::getLocalDate, new LocalDateRenderer())
+                .setCaption("LocalDate");
+        grid.addColumn(TimeBean::getLocalDate,
+                new LocalDateRenderer(finnishDateFormatter, ""))
+                .setCaption("LocalDate, Finnish formatter");
+        grid.addColumn(TimeBean::getLocalDateTime, new LocalDateTimeRenderer())
+                .setCaption("LocalDateTime");
+        grid.addColumn(TimeBean::getLocalDateTime,
+                new LocalDateTimeRenderer(finnishDateTimeFormatter, ""))
+                .setCaption("LocalDateTime, Finnish formatter");
+        grid.setItems(new TimeBean());
+        addComponent(grid);
+    }
+
+}
diff --git a/uitest/src/test/java/com/vaadin/tests/components/grid/LocalDateRenderersTest.java b/uitest/src/test/java/com/vaadin/tests/components/grid/LocalDateRenderersTest.java
new file mode 100644
index 0000000000..76f17edb63
--- /dev/null
+++ b/uitest/src/test/java/com/vaadin/tests/components/grid/LocalDateRenderersTest.java
@@ -0,0 +1,38 @@
+package com.vaadin.tests.components.grid;
+
+import java.time.LocalDate;
+import java.time.format.DateTimeFormatter;
+import java.time.format.FormatStyle;
+import java.util.Locale;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import com.vaadin.testbench.elements.GridElement;
+import com.vaadin.tests.tb3.SingleBrowserTest;
+
+public class LocalDateRenderersTest extends SingleBrowserTest {
+
+    @Test
+    public void localDate_and_LocalDateTime_rendered_correctly() {
+        openTestURL();
+
+        GridElement grid = $(GridElement.class).first();
+
+        LocalDate epochDate = LocalDate.ofEpochDay(0);
+        Assert.assertEquals(
+                epochDate.format(
+                        DateTimeFormatter.ofLocalizedDate(FormatStyle.LONG)
+                                .withLocale(new Locale("en"))),
+                grid.getCell(0, 0).getText());
+        Assert.assertEquals("1. tammikuuta 1970", grid.getCell(0, 1).getText());
+        Assert.assertEquals(
+                epochDate.atTime(0, 0)
+                        .format(DateTimeFormatter.ofLocalizedDateTime(
+                                FormatStyle.LONG, FormatStyle.SHORT)
+                                .withLocale(new Locale("en"))),
+                grid.getCell(0, 2).getText());
+        Assert.assertEquals("1. tammikuuta 1970 klo 0.00.00",
+                grid.getCell(0, 3).getText());
+    }
+}