Sample for https://stackoverflow.com/q/48792353/679824

Base.java

package com.rationaleemotions.stackoverflow.qn48792353;

import org.testng.annotations.AfterSuite;
import org.testng.annotations.BeforeSuite;

public class Base {
    @BeforeSuite
    public void beforeSuite() {
        System.err.println("beforeSuite() invoked");
    }

    @AfterSuite
    public void afterSuite() {
        System.err.println("afterSuite() invoked");
    }
}

Four.java

package com.rationaleemotions.stackoverflow.qn48792353;

import org.testng.annotations.Test;

public class Four extends Base {
    @Test
    public void test4() {
        System.err.println("test4() executed");
    }
}

One.java

package com.rationaleemotions.stackoverflow.qn48792353;

import org.testng.annotations.Test;

public class One extends Base {
    @Test
    public void test1() {
        System.err.println("test1() executed");
    }
}

output.txt

[INFO] --- maven-surefire-plugin:2.19.1:test (default-test) @ testbed ---

-------------------------------------------------------
 T E S T S
-------------------------------------------------------
Running TestSuite
...
... TestNG 6.14.2 by Cédric Beust ([email protected])
...

beforeSuite() invoked
test1() executed
test2() executed
test3() executed
test4() executed
afterSuite() invoked
Tests run: 4, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.458 sec - in TestSuite

Results :

Tests run: 4, Failures: 0, Errors: 0, Skipped: 0

suite.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd">
<suite name="48792353_Suite" verbose="2">
    <test name="48792353_test">
        <classes>
            <class name="com.rationaleemotions.stackoverflow.qn48792353.One"/>
            <class name="com.rationaleemotions.stackoverflow.qn48792353.Two"/>
            <class name="com.rationaleemotions.stackoverflow.qn48792353.Three"/>
            <class name="com.rationaleemotions.stackoverflow.qn48792353.Four"/>
        </classes>
    </test>
</suite>

Three.java

package com.rationaleemotions.stackoverflow.qn48792353;

import org.testng.annotations.Test;

public class Three extends Base {
    @Test
    public void test3() {
        System.err.println("test3() executed");
    }
}

Two.java

package com.rationaleemotions.stackoverflow.qn48792353;

import org.testng.annotations.Test;

public class Two extends Base {
    @Test
    public void test2() {
        System.err.println("test2() executed");
    }
}