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import org.junit.jupiter.api.Test;
import org.junit.platform.commons.support.AnnotationSupport;
import org.junit.platform.commons.support.HierarchyTraversalMode;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.List;
import java.util.logging.Logger;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.junit.platform.commons.util.ReflectionUtils.returnsVoid;
public class TestUtilities {
private static final Logger logger = Logger.getLogger(TestUtilities.class.getName());
private TestUtilities() {
throw new AssertionError("static utility class is not intended to be instantiated");
}
/**
* Execute all of the functions and methods in the calling class that are marked with a @Test annotation. This is
* intended to be invoked once from a static initializer in a class that defines @Test methods or functions.
*
* @throws AssertionError if any tests fail
*/
public static void runTests() {
// Note that this depends on knowing the stack depth.
final String callingClass = new Exception().getStackTrace()[1].getClassName();
try {
runTests(Class.forName(callingClass));
} catch (final ClassNotFoundException e) {
throw new AssertionError(e);
}
}
/**
* Execute all of the functions and methods in a class that have a @Test annotation. This is intended to be invoked
* once from a static initializer in a class that defines @Test methods or functions.
*
* @param c the Class to test
* @throws AssertionError if any tests fail
*/
public static void runTests(final Class c) {
logger.fine("executing tests for class " + c.getName());
final List<Method> testMethods = AnnotationSupport.findAnnotatedMethods(c, Test.class,
HierarchyTraversalMode.TOP_DOWN);
for (final Method method : testMethods) {
assertTrue(returnsVoid(method));
assertEquals(0, method.getParameterCount());
logger.fine("executing test " + method);
try {
final boolean isStatic = Modifier.isStatic(method.getModifiers());
final Object o = isStatic ? null : c.getDeclaredConstructor().newInstance();
method.setAccessible(true);
method.invoke(o, null);
} catch (final Exception e) {
throw new AssertionError(e);
}
}
}
}
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