Jenkins can't check parameters testng - maven

Question

I'm trying to build my test in jenkins with testng. So I configured a testng.xml file that can run my tests
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd" >
<suite name="TestRun">
<test name="TestRunFireFox">
<parameter name="browser" value="firefox"/>
<classes>
<class name="Data.Tests.TestRun" />
</classes>
</test>
</suite>
If I just run it local it will get the firefox browser without any problems. But if I try to build it threw jenkins it will give my following error
Exception org.testng.TestNGException
Message: Parameter 'browser' is required by #Configuration on method startup but has not been marked #Optional or defined
Stacktrace:
at org.testng.internal.Parameters.createParameters(Parameters.java:165)
at org.testng.internal.Parameters.createParameters(Parameters.java:372)
at org.testng.internal.Parameters.createConfigurationParameters(Parameters.java:90)
at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:199)
at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:140)
at org.testng.TestRunner.beforeRun(TestRunner.java:645)
at org.testng.TestRunner.run(TestRunner.java:613)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:357)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:352)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:310)
at org.testng.SuiteRunner.run(SuiteRunner.java:259)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1199)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1124)
at org.testng.TestNG.run(TestNG.java:1032)
at org.apache.maven.surefire.testng.TestNGExecutor.run(TestNGExecutor.java:70)
at org.apache.maven.surefire.testng.TestNGDirectoryTestSuite.executeMulti(TestNGDirectoryTestSuite.java:158)
at org.apache.maven.surefire.testng.TestNGDirectoryTestSuite.execute(TestNGDirectoryTestSuite.java:98)
at org.apache.maven.surefire.testng.TestNGProvider.invoke(TestNGProvider.java:111)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:164)
at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:110)
at org.apache.maven.surefire.booter.SurefireStarter.invokeProvider(SurefireStarter.java:175)
at org.apache.maven.surefire.booter.SurefireStarter.runSuitesInProcessWhenForked(SurefireStarter.java:107)
at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:68)
I think it has something to do with my parameters but I can't see what it is. This is also my pom file I think it's correctly configureted
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>intix</groupId>
<artifactId>automation</artifactId>
<version>1.1-SNAPSHOT</version>
<properties>
<testng.version>6.9.4</testng.version>
<selenium.version>2.46.0</selenium.version>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.testng</groupId>
<artifactId>testng</artifactId>
<version>${testng.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.seleniumhq.selenium</groupId>
<artifactId>selenium-java</artifactId>
<version>2.52.0</version>
</dependency>
<dependency>
<groupId>org.uncommons</groupId>
<artifactId>reportng</artifactId>
<version>1.1.4</version>
</dependency>
<dependency>
<groupId>org.apache.velocity</groupId>
<artifactId>velocity</artifactId>
<version>1.7</version>
</dependency>
<dependency>
<groupId>com.google.inject</groupId>
<artifactId>guice</artifactId>
<version>4.0</version>
</dependency>
</dependencies>
<build>
<defaultGoal>integration-test</defaultGoal>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.2</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-failsafe-plugin</artifactId>
<version>2.19.1</version>
<configuration>
<suiteXmlFiles>
<suiteXmlFile>TestRun.xml</suiteXmlFile>
</suiteXmlFiles>
</configuration>
<executions>
<execution>
<goals>
<goal>integration-test</goal>
<goal>verify</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>

Answer 1

Have you mentioned
#Parameters ({"browser"})
on your java test file? where are you accepting the browser parameter for your test?

Answer 2

The problem was if you run the class without the xml file of testng, he had a problem with the browser.
So to get it working you have to use
public void method(#Optional("firefox")){}
By doing this your parameter will always be filled even if you run the method without an testng xml file.