How to pass input from command line to junit maven test program

maven junit junit4
Achaius picture Achaius · Mar 28, 2012 · Viewed 30.9k times · Source

I wrote a junit test to add two numbers. I need to pass this numbers from command line. I am running this junit test from maven tool as

mvn -Dtest=AddNumbers

My test program looks like this

int num1 = 1;
int num2 = 2;

@Test
public void addNos() {
  System.out.println((num1 + num2));
}

How to pass these numbers from command line?

Answer

FrVaBe picture FrVaBe · May 4, 2012

Passing the numbers as system properties like suggested by @artbristol is a good idea, but I found that it is not always guaranteed that these properties will be propagated to the test.

To be sure to pass the system properties to the test use the maven surefire plugin argLine parameter, like

mvn -Dtest=AddNumbers -DargLine="-Dnum1=1 -Dnum2=2"

Related questions

Maven 3 and JUnit 4 compilation problem: package org.junit does not exist

I am trying to build a simple Java project with Maven. In my pom-file I declare JUnit 4.8.2 as the only dependency. Still Maven insists on using JUnit version 3.8.1. How do I fix it? The problem manifests itself in a compilation …

Read More
NoSuchMethodError with Hamcrest 1.3 & JUnit 4.11

Another instance of the NoSuchMethodError for the JUnit & Hamcrest combination. Offending code: assertThat(dirReader.document(0).getFields(), hasItem( new FeatureMatcher<IndexableField, String>(equalTo("Patisnummer"), "Field key", "Field key") { @Override protected String featureValueOf(IndexableField actual) { return actual.name(); } } )); Commented …

Read More
Maven won't run tests

When running mvn test maven won't run all Test Classes. When I explicitly provide a class by adding -Dtest=PropertyTests the tests will be run. Here's my pom.xml: <configuration> <includes> <include>**/*Spec.*</…

Read More