Self-testing code
Self-testing code is software which incorporates built-in tests (see test-first development).
In Java, to execute a unit test, a class can have methods like the following.
public static void main(String[] args) {
test();
}
static void test() {
assert foo == bar;
}
Executing the class from the command line invokes main, which runs the test. To invoke a full system test, a class can incorporate a method call.
public static void main(String[] args) {
test();
TestSuite.test(); // invokes full system test
}