Add separate modules to test Bean Validation lib necessity. (#8249)

* Add separate modules to test Bean Validation lib necessity.

Fixes #8141

server/src/main/java/com/vaadin/data/util/BeanUtil.java

@@ -20,6 +20,7 @@ import java.beans.IntrospectionException;
 import java.beans.Introspector;
 import java.beans.PropertyDescriptor;
 import java.io.Serializable;
+import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.util.ArrayList;
 import java.util.List;
@@ -229,14 +230,21 @@ public final class BeanUtil implements Serializable {
 
         private static boolean isAvailable() {
             try {
-                Class.forName("javax.validation.Validation");
+                Class<?> clazz = Class.forName("javax.validation.Validation");
+                Method method = clazz.getMethod("buildDefaultValidatorFactory");
+                method.invoke(null);
                 return true;
-            } catch (ClassNotFoundException e) {
+            } catch (ClassNotFoundException | NoSuchMethodException
+                    | InvocationTargetException e) {
                 Logger.getLogger(BeanValidator.class.getName())
                         .fine("A JSR-303 bean validation implementation not found on the classpath. "
                                 + BeanValidator.class.getSimpleName()
                                 + " cannot be used.");
                 return false;
+            } catch (IllegalAccessException | IllegalArgumentException e) {
+                throw new RuntimeException(
+                        "Unable to invoke javax.validation.Validation.buildDefaultValidatorFactory()",
+                        e);
             }
         }
 

test/bean-api-validation/pom.xml

@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>com.vaadin</groupId>
+        <artifactId>vaadin-test</artifactId>
+        <version>8.0-SNAPSHOT</version>
+    </parent>
+    <artifactId>vaadin-test-bean-api-validation</artifactId>
+    <packaging>jar</packaging>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.eclipse.jetty</groupId>
+                <artifactId>jetty-maven-plugin</artifactId>
+                <version>${jetty.version}</version>
+                <configuration>
+                    <scanIntervalSeconds>-1</scanIntervalSeconds>
+                    <stopPort>8081</stopPort>
+                    <stopWait>5</stopWait>
+                    <stopKey>foo</stopKey>
+                </configuration>
+                <executions>
+                    <!-- start and stop jetty (running our app) when running 
+                        integration tests -->
+                    <execution>
+                        <id>start-jetty</id>
+                        <phase></phase>
+                    </execution>
+                    <execution>
+                        <id>stop-jetty</id>
+                        <phase></phase>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>

test/bean-api-validation/src/test/java/com/vaadin/data/BeanValidationTest.java

@@ -0,0 +1,63 @@
+/*
+ * Copyright 2000-2016 Vaadin Ltd.
+ *
+ * Licensed 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.
+ */
+package com.vaadin.data;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import com.vaadin.ui.TextField;
+
+/**
+ * @author Vaadin Ltd
+ *
+ */
+public class BeanValidationTest {
+
+    public static class Bean {
+
+        private String property;
+
+        public String getProperty() {
+            return property;
+        }
+
+        public void setProperty(String property) {
+            this.property = property;
+        }
+
+    }
+
+    @Test
+    public void binderWorksWithoutBeanValidationLib() {
+        try {
+            Class.forName("javax.validation.Validation");
+            Assert.fail();
+        } catch (ClassNotFoundException ignored) {
+        }
+
+        Binder<Bean> binder = new Binder<>(Bean.class);
+
+        TextField field = new TextField();
+        binder.forField(field).bind("property");
+
+        Bean bean = new Bean();
+        binder.setBean(bean);
+
+        field.setValue("foo");
+        Assert.assertEquals(field.getValue(), bean.getProperty());
+
+    }
+}

test/bean-impl-validation/pom.xml

@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>com.vaadin</groupId>
+        <artifactId>vaadin-test</artifactId>
+        <version>8.0-SNAPSHOT</version>
+    </parent>
+    <artifactId>vaadin-test-bean-impl-validation</artifactId>
+    <packaging>jar</packaging>
+
+
+    <dependencies>
+        <dependency>
+            <groupId>javax.validation</groupId>
+            <artifactId>validation-api</artifactId>
+            <version>1.1.0.Final</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.eclipse.jetty</groupId>
+                <artifactId>jetty-maven-plugin</artifactId>
+                <version>${jetty.version}</version>
+                <configuration>
+                    <scanIntervalSeconds>-1</scanIntervalSeconds>
+                    <stopPort>8081</stopPort>
+                    <stopWait>5</stopWait>
+                    <stopKey>foo</stopKey>
+                </configuration>
+                <executions>
+                    <!-- start and stop jetty (running our app) when running 
+                        integration tests -->
+                    <execution>
+                        <id>start-jetty</id>
+                        <phase></phase>
+                    </execution>
+                    <execution>
+                        <id>stop-jetty</id>
+                        <phase></phase>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>

test/bean-impl-validation/src/test/java/com/vaadin/data/BeanValidationTest.java

@@ -0,0 +1,63 @@
+/*
+ * Copyright 2000-2016 Vaadin Ltd.
+ *
+ * Licensed 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.
+ */
+package com.vaadin.data;
+
+import javax.validation.Validation;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import com.vaadin.ui.TextField;
+
+/**
+ * @author Vaadin Ltd
+ *
+ */
+public class BeanValidationTest {
+
+    public static class Bean {
+
+        private String property;
+
+        public String getProperty() {
+            return property;
+        }
+
+        public void setProperty(String property) {
+            this.property = property;
+        }
+
+    }
+
+    @Test
+    public void binderWorksWithoutBeanValidationImpl() {
+        // Just to make sure that it's available at the compilation time and in
+        // runtime
+        Assert.assertNotNull(Validation.class);
+
+        Binder<Bean> binder = new Binder<>(Bean.class);
+
+        TextField field = new TextField();
+        binder.forField(field).bind("property");
+
+        Bean bean = new Bean();
+        binder.setBean(bean);
+
+        field.setValue("foo");
+        Assert.assertEquals(field.getValue(), bean.getProperty());
+
+    }
+}

test/pom.xml

@@ -99,6 +99,8 @@
         <module>vaadinservletconfiguration-widget-set</module>
         <module>spring-boot</module>
         <module>cdi</module>
+        <module>bean-api-validation</module>
+        <module>bean-impl-validation</module>
     </modules>
 
     <build>