package tests;

import org.junit.runner.RunWith;
import org.junit.runners.Suite;
import org.junit.runners.Suite.SuiteClasses;

@RunWith(Suite.class)
@SuiteClasses({ 
	EmailBuilderTests.class, 
	EmailTests.class })

public class AllTests {
}

package tests;

import org.junit.runner.RunWith;
import org.junit.runners.Suite;
import org.junit.runners.Suite.SuiteClasses;

@RunWith(Suite.class)
@SuiteClasses({ 
	EmailBuilderTests.class, 
	EmailTests.class,
	EmailSortingTests.class })

public class AllTests {
}

Add the sorting test class to the test suite.
Add the sorting test class to the test suite.