Maven does not find JUnit tests to run
I have a maven program, it compiles fine. When I run mvn test it does not run any tests (under TESTs header says There are no tests to run. ).
I've recreated this problem with a super simple setup which I will include below as well as the output when run with -X .
The unit tests run fine from eclipse (both with its default junit package and when I instead include the junit.jar downloaded by maven). Also mvn test-compile correctly creates the class under test-classes. I am running this on OSX 10.6.7 with Maven 3.0.2 and java 1.6.0_24.
Here is the directory structure:
/my_program/pom.xml
/my_program/src/main/java/ClassUnderTest.java
/my_program/src/test/java/ClassUnderTestTests.java
pom.xml:
<?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>
<groupId>my_group</groupId>
<artifactId>my_program</artifactId>
<packaging>jar</packaging>
<version>1.0-SNAPSHOT</version>
<name>My Program</name>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.8.1</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.5</source>
<target>1.5</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
ClassUnderTest.java:
public class ClassUnderTest {
public int functionUnderTest(int n) {
return n;
}
}
ClassUnderTestTests.java:
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
public class ClassUnderTestTests {
private ClassUnderTest o;
@Before
public void setUp() {
o = new ClassUnderTest();
}
@Test
public void testFunctionUnderTest_testCase1() {
Assert.assertEquals(1, o.functionUnderTest(1));
}
@Test
public void testFunctionUnderTest_testCase2() {
Assert.assertEquals(2, o.functionUnderTest(2));
}
}
End of mvn -X test:
[DEBUG] Configuring mojo org.apache.maven.plugins:maven-surefire-plugin:2.7.1:test from plugin realm ClassRealm[plugin>org.apache.maven.plugins:maven-surefire-plugin:2.7.1, parent: sun.misc.Launcher$AppClassLoader@5224ee]
[DEBUG] Configuring mojo 'org.apache.maven.plugins:maven-surefire-plugin:2.7.1:test' with basic configurator -->
[DEBUG] (s) basedir = /Users/aaron/Programs/my_program
[DEBUG] (s) childDelegation = false
[DEBUG] (s) classesDirectory = /Users/aaron/Programs/my_program/target/classes
[DEBUG] (s) disableXmlReport = false
[DEBUG] (s) enableAssertions = true
[DEBUG] (s) forkMode = once
[DEBUG] (s) junitArtifactName = junit:junit
[DEBUG] (s) localRepository = id: local
url: file:///Users/aaron/.m2/repository/
layout: none
[DEBUG] (f) parallelMavenExecution = false
[DEBUG] (s) pluginArtifactMap = {org.apache.maven.plugins:maven-surefire-plugin=org.apache.maven.plugins:maven-surefire-plugin:maven-plugin:2.7.1:, org.apache.maven.surefire:surefire-booter=org.apache.maven.surefire:surefire-booter:jar:2.7.1:compile, org.apache.maven.surefire:surefire-api=org.apache.maven.surefire:surefire-api:jar:2.7.1:compile, org.apache.maven.surefire:maven-surefire-common=org.apache.maven.surefire:maven-surefire-common:jar:2.7.1:compile, org.apache.maven.shared:maven-common-artifact-filters=org.apache.maven.shared:maven-common-artifact-filters:jar:1.3:compile, org.codehaus.plexus:plexus-utils=org.codehaus.plexus:plexus-utils:jar:2.0.5:compile, junit:junit=junit:junit:jar:3.8.1:compile, org.apache.maven.reporting:maven-reporting-api=org.apache.maven.reporting:maven-reporting-api:jar:2.0.9:compile}
[DEBUG] (s) printSummary = true
[DEBUG] (s) project = MavenProject: my_group:my_program:1.0-SNAPSHOT @ /Users/aaron/Programs/my_program/pom.xml
[DEBUG] (s) projectArtifactMap = {junit:junit=junit:junit:jar:4.8.1:test}
[DEBUG] (s) redirectTestOutputToFile = false
[DEBUG] (s) remoteRepositories = [ id: central
url: http://repo1.maven.org/maven2
layout: default
snapshots: [enabled => false, update => daily]
releases: [enabled => true, update => never]
]
[DEBUG] (s) reportFormat = brief
[DEBUG] (s) reportsDirectory = /Users/aaron/Programs/my_program/target/surefire-reports
[DEBUG] (s) session = org.apache.maven.execution.MavenSession@dfbb43
[DEBUG] (s) skip = false
[DEBUG] (s) skipTests = false
[DEBUG] (s) testClassesDirectory = /Users/aaron/Programs/my_program/target/test-classes
[DEBUG] (s) testFailureIgnore = false
[DEBUG] (s) testNGArtifactName = org.testng:testng
[DEBUG] (s) testSourceDirectory = /Users/aaron/Programs/my_program/src/test/java
[DEBUG] (s) trimStackTrace = true
[DEBUG] (s) useFile = true
[DEBUG] (s) useManifestOnlyJar = true
[DEBUG] (s) workingDirectory = /Users/aaron/Programs/my_program
[DEBUG] -- end configuration --
[INFO] Surefire report directory: /Users/aaron/Programs/my_program/target/surefire-reports
[DEBUG] Setting system property [user.dir]=[/Users/aaron/Programs/my_program]
[DEBUG] Setting system property [localRepository]=[/Users/aaron/.m2/repository]
[DEBUG] Setting system property [basedir]=[/Users/aaron/Programs/my_program]
[DEBUG] Using JVM: /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home/bin/java
[DEBUG] Using manager EnhancedLocalRepositoryManager with priority 10 for /Users/aaron/.m2/repository
[DEBUG] dummy:dummy:jar:1.0 (selected for null)
[DEBUG] org.apache.maven.surefire:surefire-booter:jar:2.7.1:compile (selected for compile)
[DEBUG] org.apache.maven.surefire:surefire-api:jar:2.7.1:compile (selected for compile)
[DEBUG] Adding to surefire booter test classpath: /Users/aaron/.m2/repository/org/apache/maven/surefire/surefire-booter/2.7.1/surefire-booter-2.7.1.jar Scope: compile
[DEBUG] Adding to surefire booter test classpath: /Users/aaron/.m2/repository/org/apache/maven/surefire/surefire-api/2.7.1/surefire-api-2.7.1.jar Scope: compile
[DEBUG] Using manager EnhancedLocalRepositoryManager with priority 10 for /Users/aaron/.m2/repository
[DEBUG] dummy:dummy:jar:1.0 (selected for null)
[DEBUG] org.apache.maven.surefire:surefire-junit4:jar:2.7.1:test (selected for test)
[DEBUG] org.apache.maven.surefire:surefire-api:jar:2.7.1:test (selected for test)
[DEBUG] Adding to surefire test classpath: /Users/aaron/.m2/repository/org/apache/maven/surefire/surefire-junit4/2.7.1/surefire-junit4-2.7.1.jar Scope: test
[DEBUG] Adding to surefire test classpath: /Users/aaron/.m2/repository/org/apache/maven/surefire/surefire-api/2.7.1/surefire-api-2.7.1.jar Scope: test
[DEBUG] Test Classpath :
[DEBUG] /Users/aaron/Programs/my_program/target/test-classes
[DEBUG] /Users/aaron/Programs/my_program/target/classes
[DEBUG] /Users/aaron/.m2/repository/junit/junit/4.8.1/junit-4.8.1.jar
[DEBUG] Using manager EnhancedLocalRepositoryManager with priority 10 for /Users/aaron/.m2/repository
[DEBUG] dummy:dummy:jar:1.0 (selected for null)
[DEBUG] org.apache.maven.surefire:surefire-booter:jar:2.7.1:compile (selected for compile)
[DEBUG] org.apache.maven.surefire:surefire-api:jar:2.7.1:compile (selected for compile)
[DEBUG] Adding to surefire booter test classpath: /Users/aaron/.m2/repository/org/apache/maven/surefire/surefire-booter/2.7.1/surefire-booter-2.7.1.jar Scope: compile
[DEBUG] Adding to surefire booter test classpath: /Users/aaron/.m2/repository/org/apache/maven/surefire/surefire-api/2.7.1/surefire-api-2.7.1.jar Scope: compile
Forking command line: /bin/sh -c cd /Users/aaron/Programs/my_program && /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home/bin/java -jar /Users/aaron/Programs/my_program/target/surefire/surefirebooter6118081963679415631.jar /Users/aaron/Programs/my_program/target/surefire/surefire4887918564882595612tmp /Users/aaron/Programs/my_program/target/surefire/surefire9012255138269731406tmp
-------------------------------------------------------
T E S T S
-------------------------------------------------------
There are no tests to run.
Results :
Tests run: 0, Failures: 0, Errors: 0, Skipped: 0
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.089s
[INFO] Finished at: Mon May 30 12:03:09 EDT 2011
[INFO] Final Memory: 7M/62M
[INFO] ------------------------------------------------------------------------
By default Maven uses the following naming conventions when looking for tests to run:
Test* *Test *TestCase Your test class doesn't follow these conventions. You should rename it or configure Maven Surefire Plugin to use another pattern for test classes.
I also found that the unit test code should put under the test folder, it can not be recognized as test class if you put it under the main folder. eg.
Wrong
/my_program/src/main/java/NotTest.java
Right
/my_program/src/test/java/MyTest.java
Another thing that can cause Maven to not find the tests if if the module's packaging is not declared correctly.
In a recent case, someone had <packaging>pom</packaging> and my tests never ran. I changed it to <packaging>jar</packaging> and now it works fine.
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