Self-testing code

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Self-testing code is software which incorporates built-in tests (see test-first development).

In Java, to execute a unit test from the command line, a class can have methods like the following.

// Executing <code>main</code> runs the unit test. 
public static void main(String[] args) {
    test();
}
 
static void test() {
    assert foo == bar;
}

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
}

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