Add support for @FieldSource for @ParameterizedTest methods

[sbrannen]

Overview

@FieldSource was introduced in JUnit Jupiter 5.11 for use with @ParameterizedTest methods.

Similar to @MethodSource which allows developers to supply a fully-qualified method name, @FieldSource allows developers to supply a fully-qualified field name.

Native Build Tools already registers reflection metadata for fully-qualified method names for @MethodSource here:

native-build-tools/common/junit-platform-native/src/main/java/org/graalvm/junit/platform/config/jupiter/JupiterConfigProvider.java

Lines 144 to 166 in 979e9ec

	private static Class<?>[] handleMethodReference(String... methodNames) {
	List<Class<?>> classList = new ArrayList<>();
	for (String methodName : methodNames) {
	String[] parts = methodName.split("#");
	/*
	* If the method used as an argument source resides in a different class than the test class, it must be specified
	* by the fully qualified class name, followed by a # and the method name
	*/
	debug("Found method reference: %s", methodName);
	if (parts.length == 2) {
	String className = parts[0];
	debug("Processing method reference from another class: %s", className);
	try {
	classList.add(Class.forName(className));
	} catch (ClassNotFoundException e) {
	debug("Failed to register method reference for reflection: %s Reason: %s", className, e);
	}
	} else {
	debug("Skipping method reference as it originates in the same class as the test: %s", methodName);
	}
	}
	return classList.toArray(new Class<?>[0]);
	}

Similar support should be added for @FieldSource. For example, given the following parameterized test, reflection metadata should be registered for the example.FruitUtils#tropicalFruits field.

@ParameterizedTest
@FieldSource("example.FruitUtils#tropicalFruits")
void testWithExternalFieldSource(String tropicalFruit) {
    // test with tropicalFruit
}

Related Issues

• @ParameterizedTest with @MethodSource are not supported.  #51
• Configure types referenced via @ExtendWith, @ArgumentsSource, etc. for reflection  #54
• Interfaces implemented by test classes are not registered for reflection #636

[dnestoro]

Hey @sbrannen thanks for rising this issue. As part of JUnit support refactoring, I've added support for @FieldSource as well