JUnit5 Auto DisplayName Generator: Capitalized Camel Case tests

junit-platform.properties

# put this in test/resources dir
junit.jupiter.displayname.generator.default=\
    PATH_TO_CLASS.ReplaceCapitalizedCamelCase

ReplaceCapitalizedCamelCase.java

import org.junit.jupiter.api.DisplayNameGenerator;

import java.lang.reflect.Method;

/**
 * Classe permettant à jUnit d'automatiquement transformer les noms de classes en phrases lors de l'exécution des tests.<br>
 * Permet une meilleure lisibilité.
 */
public class ReplaceCapitalizedCamelCase extends DisplayNameGenerator.Standard {

    public ReplaceCapitalizedCamelCase() {
    }

    @Override
    public String generateDisplayNameForClass(final Class<?> testClass) {
        return this.replaceCapitals(super.generateDisplayNameForClass(testClass));
    }

    @Override
    public String generateDisplayNameForNestedClass(final Class<?> nestedClass) {
        return this.replaceCapitals(super.generateDisplayNameForNestedClass(nestedClass));
    }

    @Override
    public String generateDisplayNameForMethod(final Class<?> testClass, final Method testMethod) {
        return this.replaceCapitals(testMethod.getName());
    }

    private String replaceCapitals(String name) {
        name = name.replaceAll("([A-Z])", " $1");  // adding spaces
        name = name.replaceAll("([0-9]+)", " $1");  // adding spaces
        name = name.substring(0, 1).toUpperCase() + name.substring(1);  // forcing first char capitalized
        return name;
    }
}