AspectJ + Junit + Maven - pointcut recognized in tests but NoSuchMethodError: aspectOf() exception thrown

aspectj, aspectj-maven-plugin, java, junit, maven

Solution

So, the trick was to compile that library with my aspects not with javac but with `ajc` (aka aspectj-maven-plugin)

That's it. I just had to add this into the maven module with aspects (they are in src/main/java)

Aspects are annotation ridden so you have to have 1.6 source/target/compliance level

ASPECTJ MODULE

<!-- Build -->
<build>
    <plugins>
        <plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>aspectj-maven-plugin</artifactId>
            <version>1.4</version>
            <configuration>
                <source>1.6</source>
                <target>1.6</target>
                <complianceLevel>1.6</complianceLevel>
                <verbose>true</verbose>
            </configuration>
            <executions>
                <execution>
                    <goals>
                        <goal>compile</goal>
                    </goals>
                </execution>
            </executions>
            <dependencies>
            </dependencies>
        </plugin>
    </plugins>
</build>

Than you have to add this module as a test dependency into your target module you want to use aspects with

TARGET MODULE

<build>
    <plugins>
        <plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>aspectj-maven-plugin</artifactId>
            <version>1.4</version>
            <configuration>
                <aspectLibraries>
                    <aspectLibrary>
                        <groupId>that-artifact</groupId>
                        <artifactId>mentioned-above</artifactId>
                    </aspectLibrary>
                </aspectLibraries>
                <source>1.6</source>
                <target>1.6</target>
                <complianceLevel>1.6</complianceLevel>
            </configuration>
            <executions>
                <execution>
                    <goals>
                        <goal>test-compile</goal>
                     </goals>
                     <configuration>
                         <showWeaveInfo>true</showWeaveInfo>
                     </configuration>
                 </execution>
             </executions>
         </plugin>
     </plugins>
 </build>

You have to use 1.6 level everywhere

Problem

I have followed almost all JUnit + Maven + AspectJ questions here and even I am pretty sure I have everything set properly, I am unable to test it. I have a Maven module with just one aspect: ``` @Aspect public class AssertionAspect { @Pointcut("execution(@org.junit.Test * *())") public void testMethodEntryPoint() {} @Before("testMethodEntryPoint()") public void executeBeforeEnteringTestMethod() { System.out.println("EXECUTE ACTION BEFORE ENTERING TEST METHOD"); } @After("testMethodEntryPoint()") public void executeAfterEnteringTestMethod() { System.out.println("EXECUTE ACTION AFTER ENTERING TEST METHOD"); } } ``` Very pretty simple. All I want to do is to do something before and after each execution of any test method in my test project which is annotated with `@Test`. Now, I am using `aspectj-maven-plugin` in my `<build>` like this: ``` <build> <plugins> <plugin> <groupId>org.codehaus.mojo</groupId> <artifactId>aspectj-maven-plugin</artifactId> <version>1.4</version> <configuration> <aspectLibraries> <aspectLibrary> <groupId>my.package</groupId> <artifactId>with-aspects</artifactId> </aspectLibrary> </aspectLibraries> <source>1.6</source> <target>1.6</target> </configuration> <executions> <execution> <goals> <goal>test-compile</goal> </goals> <configuration> <showWeaveInfo>true</showWeaveInfo> </configuration> </execution> </executions> </plugin> </plugins> </build> ``` 1) I have no `compile` goal in `<execution>` because I have no classes in `src/main/java` (that's true and it is ok, I know what I am doing) 2) I have ``` <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjrt</artifactId> <version>1.7.3</version> </dependency> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjweaver</artifactId> <version>1.7.3</version> </dependency> ``` in my `<dependencies>` section. Nothing more regarding aspectj. 3) I am sure my testing classes are recognized by aspectj because I see that join points were advised . I see: ``` Join point 'method-execution(xyz)' in Type 'blabla' (AppTestCase.java:124) advised by before advice from 'blabla' (my-aspects jar.jar!AssertionAspect.class(from AssertionAspect.java)) ``` Same holds for after advice. 4) when I tried version 1.7.3 instead of 1.6.11, this message appeared to me while join points were treated: `expected 1.6.11 found 1.7.3`. I guess it is a message from `aspectj-maven-plugin` of version 1.4, I do not really know when 1.5 will be release to get rid of this. What versions are compatible? 5) My "code" looks like this :) ``` @RunWith(JUnit4.class) public class TestClass() { @Test public void test01(){ } } ``` 6) I have 1.6.0_39 Oracle Java compiler, I am compiling everything with 1.6 (target, source .. all) So, aspects recognized, applied, I am going to execute tests like `mvn clean test` but all I get is that: ``` java.lang.NoSuchMethodError: my/aspect/AssertionAspect.aspectOf()Lmy/aspect/AssertionAspect; ``` and pretty long stacktrace. I do not have any clue what might be wrong, really.

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