Execute the project on vanilla JDK8 (but slowly)

Author: Jaroslav Tulach

.travis.yml

@@ -21,7 +21,6 @@ install:
         tar -xzf graalvm.tar.gz
 
 script:
-    - java -version
     - mvn clean
     - mvn package
     - mvn exec:exec

pom.xml

@@ -149,6 +149,88 @@
                 </plugins>
             </build>
         </profile>
+        <profile>
+            <id>jdk8</id>
+            <activation>
+                <jdk>1.8</jdk>
+                <file>
+                    <missing>${java.home}/lib/truffle/truffle-api.jar</missing>
+                </file>
+            </activation>
+            <dependencies>
+                <dependency>
+                    <groupId>org.graalvm.sdk</groupId>
+                    <artifactId>graal-sdk</artifactId>
+                    <version>${graalvm.version}</version>
+                    <scope>compile</scope>
+                </dependency>
+                <dependency>
+                    <groupId>org.graalvm.js</groupId>
+                    <artifactId>js</artifactId>
+                    <version>${graalvm.version}</version>
+                    <scope>runtime</scope>
+                </dependency>
+                <dependency>
+                    <groupId>org.graalvm.js</groupId>
+                    <artifactId>js-scriptengine</artifactId>
+                    <version>${graalvm.version}</version>
+                    <scope>runtime</scope>
+                </dependency>
+                <dependency>
+                    <groupId>org.graalvm.tools</groupId>
+                    <artifactId>profiler</artifactId>
+                    <version>${graalvm.version}</version>
+                    <scope>runtime</scope>
+                </dependency>
+                <dependency>
+                    <groupId>org.graalvm.tools</groupId>
+                    <artifactId>chromeinspector</artifactId>
+                    <version>${graalvm.version}</version>
+                    <scope>runtime</scope>
+                </dependency>
+            </dependencies>
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>org.codehaus.mojo</groupId>
+                        <artifactId>exec-maven-plugin</artifactId>
+                        <version>1.6.0</version>
+                        <executions>
+                            <execution>
+                                <id>default-cli</id>
+                                <goals>
+                                    <goal>exec</goal>
+                                </goals>
+                                <configuration>
+                                    <arguments>
+                                        <argument>-classpath</argument>
+                                        <classpath/>
+                                        <argument>com.mycompany.app.App</argument>
+                                    </arguments>
+                                </configuration>
+                            </execution>
+                            <execution>
+                                <id>nograal</id>
+                                <goals>
+                                    <goal>exec</goal>
+                                </goals>
+                                <configuration>
+                                    <arguments>
+                                        <argument>-classpath</argument>
+                                        <!-- automatically creates the classpath using all project dependencies, also adding the project build directory -->
+                                        <classpath/>
+                                        <argument>com.mycompany.app.App</argument>
+                                    </arguments>
+                                </configuration>
+                            </execution>
+                        </executions>
+                        <configuration>
+                            <executable>${JAVA_HOME}/bin/java</executable>
+                        </configuration>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
     </profiles>
     <build>
         <plugins>

src/main/java/com/mycompany/app/App.java

@@ -71,16 +71,7 @@ public class App {
             + "}\n";
 
     public static void main(String[] args) throws Exception {
-        try {
-            benchGraalPolyglotContext();
-        } catch (LinkageError err) {
-            System.out.println("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
-            System.out.println("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
-            System.out.println("!Download GraalVM.org or use JDK11!");
-            System.out.println("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
-            System.out.println("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
-            System.exit(0);
-        }
+        benchGraalPolyglotContext();
         benchGraalScriptEngine();
         benchNashornScriptEngine();
     }

src/test/java/com/mycompany/app/AppTest.java

@@ -1,6 +1,5 @@
 package com.mycompany.app;
 
-import org.graalvm.polyglot.Context;
 import static org.junit.Assert.fail;
 import org.junit.Assume;
 import org.junit.BeforeClass;
@@ -33,10 +32,13 @@ public void testGraalScriptEngineSpeed() throws Exception {
     }
 
     private void assertGraalVMOrJDK11() {
+        if (System.getProperty("java.vm.name").contains("GraalVM")) {
+            return;
+        }
         try {
-            Context.create().close();
-        } catch (IllegalStateException ex) {
-            Assume.assumeNoException("Download GraalVM.org or use JDK11!", ex);
+            Class.forName("java.lang.Module");
+        } catch (ClassNotFoundException ex) {
+            Assume.assumeNoException("Skipping the test on regular JDK8", ex);
         }
     }
 }