junit Testing with DataProviders Installation and usage

Example

Installation:

In order to use DataProviders, you need junit-dataprovider .jar :

Github

Direct download

Hamcrest-core-1.3.jar :

Github

Direct download

And add both of this .jar to your project.

Usage:

Add this import to your code:

import com.tngtech.java.junit.dataprovider.DataProvider;
import com.tngtech.java.junit.dataprovider.DataProviderRunner;
import com.tngtech.java.junit.dataprovider.UseDataProvider;

Before the declaration of your class:

@RunWith(DataProviderRunner.class)

So it looks like this:

@RunWith(DataProviderRunner.class)
public class example {
    //code
}

How to create DataProviders:

Before whichever function you want it to be a DataProvider, add this decorator:

@DataProvider

So it would look like this:

@DataProvider
public static Object[][] testExampleProvider() {
    return new Object[][]{
        {"param1", "param2", number1}
        {"param1", "param2", number1}
        //You can put as many parameters as you want
    };
}

How to use DataProviders:

Before any function you want it to get those params that we return from the DataProvider, add this decorator:

@UseDataProvider("testExampleProvider")

So your function to test looks like this:

@Test
@UseDataProvider("testExampleProvider")
public void testAccount(String param1, String param2, int number) {
    //System.out.println("exampleOfDataProviders");
    //assertEquals(...);
    //assertEquals(...);
}