create jasmine tests for split layout

* check if there is at least one splitter
* check double splitters
diff --git a/tobago-example/tobago-example-demo/src/main/webapp/content/30-concept/16-layout/60-split/Split_Layout.test.js b/tobago-example/tobago-example-demo/src/main/webapp/content/30-concept/16-layout/60-split/Split_Layout.test.js
new file mode 100644
index 0000000..2377788
--- /dev/null
+++ b/tobago-example/tobago-example-demo/src/main/webapp/content/30-concept/16-layout/60-split/Split_Layout.test.js
@@ -0,0 +1,109 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {JasmineTestTool} from "/tobago/test/tobago-test-tool.js";
+import {querySelectorFn} from "/script/tobago-test.js";
+
+it("SplitLayout Example 1", function (done) {
+  let expectedSplitters = getElements("#page\\:mainForm\\:example1") - 1;
+  let horizontalSplitters = getHorizontalSplitters("#page\\:mainForm\\:example1");
+  let verticalSplitters = getVerticalSplitters("#page\\:mainForm\\:example1");
+  let doubleSplitters = hasDoubleSplitter("#page\\:mainForm\\:example1");
+
+  const test = new JasmineTestTool(done);
+  test.do(() => expect(horizontalSplitters === expectedSplitters).toBe(true));
+  test.do(() => expect(verticalSplitters === 0).toBe(true));
+  test.do(() => expect(doubleSplitters === false).toBe(true));
+  test.start();
+});
+
+it("SplitLayout Example 2", function (done) {
+  let expectedSplitters = getElements("#page\\:mainForm\\:example2") - 1;
+  let horizontalSplitters = getHorizontalSplitters("#page\\:mainForm\\:example2");
+  let verticalSplitters = getVerticalSplitters("#page\\:mainForm\\:example2");
+  let doubleSplitters = hasDoubleSplitter("#page\\:mainForm\\:example2");
+
+  const test = new JasmineTestTool(done);
+  test.do(() => expect(horizontalSplitters === expectedSplitters).toBe(true));
+  test.do(() => expect(verticalSplitters === 0).toBe(true));
+  test.do(() => expect(doubleSplitters === false).toBe(true));
+  test.start();
+});
+
+it("SplitLayout Example 3a", function (done) {
+  let expectedSplitters = getElements("#page\\:mainForm\\:example3a") - 1;
+  let horizontalSplitters = getHorizontalSplitters("#page\\:mainForm\\:example3a");
+  let verticalSplitters = getVerticalSplitters("#page\\:mainForm\\:example3a");
+  let doubleSplitters = hasDoubleSplitter("#page\\:mainForm\\:example3a");
+
+  const test = new JasmineTestTool(done);
+  test.do(() => expect(horizontalSplitters === expectedSplitters).toBe(true));
+  test.do(() => expect(verticalSplitters === 0).toBe(true));
+  test.do(() => expect(doubleSplitters === false).toBe(true));
+  test.start();
+});
+
+it("SplitLayout Example 3b", function (done) {
+  let expectedSplitters = getElements("#page\\:mainForm\\:example3b") - 1;
+  let horizontalSplitters = getHorizontalSplitters("#page\\:mainForm\\:example3b");
+  let verticalSplitters = getVerticalSplitters("#page\\:mainForm\\:example3b");
+  let doubleSplitters = hasDoubleSplitter("#page\\:mainForm\\:example3b");
+
+  const test = new JasmineTestTool(done);
+  test.do(() => expect(horizontalSplitters === 0).toBe(true));
+  test.do(() => expect(verticalSplitters === expectedSplitters).toBe(true));
+  test.do(() => expect(doubleSplitters === false).toBe(true));
+  test.start();
+});
+
+function getHorizontalSplitters(element) {
+  return querySelectorFn(element)().querySelectorAll(":scope > .tobago-splitLayout-horizontal").length;
+}
+
+function getVerticalSplitters(element) {
+  return querySelectorFn(element)().querySelectorAll(":scope > .tobago-splitLayout-vertical").length;
+}
+
+function hasDoubleSplitter(element) {
+  let counter = 0;
+  let elements = querySelectorFn(element)().children;
+
+  for (let item of elements) {
+    if (item.classList.contains("tobago-splitLayout-horizontal") || item.classList.contains("tobago-splitLayout-vertical")) {
+      counter++;
+
+      if (counter === 2) {
+        return true;
+      }
+    } else {
+      counter = 0;
+    }
+  }
+  return false;
+}
+
+function getElements(element) {
+  let counter = 0;
+  let elements = querySelectorFn(element)().children;
+
+  for (let item of elements) {
+    if (getComputedStyle(item).display !== "none" && !item.classList.contains("tobago-splitLayout-horizontal") && !item.classList.contains("tobago-splitLayout-vertical")) {
+      counter++;
+    }
+  }
+  return counter;
+}
diff --git a/tobago-example/tobago-example-demo/src/main/webapp/content/30-concept/16-layout/60-split/Split_Layout.xhtml b/tobago-example/tobago-example-demo/src/main/webapp/content/30-concept/16-layout/60-split/Split_Layout.xhtml
index 4ed27a9..7d0355c 100644
--- a/tobago-example/tobago-example-demo/src/main/webapp/content/30-concept/16-layout/60-split/Split_Layout.xhtml
+++ b/tobago-example/tobago-example-demo/src/main/webapp/content/30-concept/16-layout/60-split/Split_Layout.xhtml
@@ -47,7 +47,7 @@
     <tc:style minWidth="150px"/>
   </tc:textarea>
 &lt;/tc:splitLayout></code></pre>
-    <tc:splitLayout columns="2fr 1fr 1fr">
+    <tc:splitLayout id="example1" columns="2fr 1fr 1fr">
       <tc:panel>
         <tc:style minWidth="150px"/>
         <p>Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore
@@ -71,7 +71,7 @@
   &lt;tc:button label="A"/>
   &lt;tc:button label="B"/>
 &lt;/tc:splitLayout></code></pre>
-    <tc:splitLayout columns="1fr 4fr 1fr">
+    <tc:splitLayout id="example2" columns="1fr 4fr 1fr">
       <tc:button label="A"/>
       <tc:button label="B"/>
       <!--<tc:button label="C"/>-->
@@ -103,8 +103,8 @@
   &lt;/tc:box>
 &lt;/tc:splitLayout></code></pre>
     <tc:flexLayout rows="auto 1fr">
-      <tc:splitLayout columns="#{splitLayoutController.verticalLayout}">
-        <tc:splitLayout rows="#{splitLayoutController.horizontalLayout}">
+      <tc:splitLayout id="example3a" columns="#{splitLayoutController.verticalLayout}">
+        <tc:splitLayout id="example3b" rows="#{splitLayoutController.horizontalLayout}">
           <tc:box label="Top left box">
             <tc:style minWidth="150px"/>
             <tc:out