Ensure Composite's contents gets re-measured on resize. (#12154)

Fixes: #12153

2 files changed, 87 insertions, 0 deletions

diff --git a/uitest/src/test/java/com/vaadin/tests/components/composite/CompositeVerticalLayoutGridResizeTest.java b/uitest/src/test/java/com/vaadin/tests/components/composite/CompositeVerticalLayoutGridResizeTest.java
new file mode 100644
index 0000000000..41adf85dd0
--- /dev/null
+++ b/uitest/src/test/java/com/vaadin/tests/components/composite/CompositeVerticalLayoutGridResizeTest.java
@@ -0,0 +1,43 @@
+package com.vaadin.tests.components.composite;
+
+import org.junit.Test;
+import org.openqa.selenium.By;
+import org.openqa.selenium.Dimension;
+import org.openqa.selenium.WebElement;
+
+import com.vaadin.testbench.elements.GridElement;
+import com.vaadin.testbench.elements.GridElement.GridCellElement;
+import com.vaadin.tests.tb3.MultiBrowserTest;
+
+public class CompositeVerticalLayoutGridResizeTest extends MultiBrowserTest {
+
+    @Test
+    public void testResize() {
+        getDriver().manage().window().setSize(new Dimension(600, 400));
+        openTestURL();
+
+        WebElement root = findElement(By.id("root"));
+        Dimension oldRootSize = root.getSize();
+
+        GridElement grid = $(GridElement.class).first();
+        // inner level element that is expected to resize
+        GridCellElement content = grid.getHeaderCell(0, 0);
+        Dimension oldContentSize = content.getSize();
+
+        // resize
+        getDriver().manage().window().setSize(new Dimension(500, 500));
+        waitUntilLoadingIndicatorNotVisible();
+
+        Dimension newRootSize = root.getSize();
+        Dimension newContentSize = content.getSize();
+
+        assertGreater("Unexpected vertical root size.", newRootSize.getHeight(),
+                oldRootSize.getHeight());
+        assertGreater("Unexpected horizontal root size.",
+                oldRootSize.getWidth(), newRootSize.getWidth());
+
+        // header height is not expected to change, only test width
+        assertGreater("Unexpected horizontal content size.",
+                oldContentSize.getWidth(), newContentSize.getWidth());
+    }
+}
diff --git a/uitest/src/test/java/com/vaadin/tests/components/composite/CompositeVerticalLayoutSplitPanelResizeTest.java b/uitest/src/test/java/com/vaadin/tests/components/composite/CompositeVerticalLayoutSplitPanelResizeTest.java
new file mode 100644
index 0000000000..362a81ed8a
--- /dev/null
+++ b/uitest/src/test/java/com/vaadin/tests/components/composite/CompositeVerticalLayoutSplitPanelResizeTest.java
@@ -0,0 +1,44 @@
+package com.vaadin.tests.components.composite;
+
+import org.junit.Test;
+import org.openqa.selenium.By;
+import org.openqa.selenium.Dimension;
+import org.openqa.selenium.WebElement;
+
+import com.vaadin.testbench.elements.HorizontalSplitPanelElement;
+import com.vaadin.tests.tb3.MultiBrowserTest;
+
+public class CompositeVerticalLayoutSplitPanelResizeTest
+        extends MultiBrowserTest {
+
+    @Test
+    public void testResize() {
+        getDriver().manage().window().setSize(new Dimension(600, 400));
+        openTestURL();
+
+        WebElement root = findElement(By.id("root"));
+        Dimension oldRootSize = root.getSize();
+
+        // inner level element that is expected to resize
+        HorizontalSplitPanelElement content = $(
+                HorizontalSplitPanelElement.class).first();
+        Dimension oldContentSize = content.getSize();
+
+        // resize
+        getDriver().manage().window().setSize(new Dimension(500, 500));
+        waitUntilLoadingIndicatorNotVisible();
+
+        Dimension newRootSize = root.getSize();
+        Dimension newContentSize = content.getSize();
+
+        assertGreater("Unexpected vertical root size.", newRootSize.getHeight(),
+                oldRootSize.getHeight());
+        assertGreater("Unexpected horizontal root size.",
+                oldRootSize.getWidth(), newRootSize.getWidth());
+
+        assertGreater("Unexpected vertical content size.",
+                newContentSize.getHeight(), oldContentSize.getHeight());
+        assertGreater("Unexpected horizontal content size.",
+                oldContentSize.getWidth(), newContentSize.getWidth());
+    }
+}