Here’s what I want

import org.junit.jupiter.api.Test;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.ValueSource;

import static org.junit.jupiter.api.Assertions.*;

class HsbColorTest {
    @ParameterizedTest
    @ValueSource(floats = {0, 100, 200, 360}) // mapped to hue (0-360)
    @ValueSource(floats = {0, 35, 100}) // mapped to saturation (0-100)
    @ValueSource(floats = {0, 35, 100}) // mapped to brightness (0-100)
    void create_withValidArgs_createsExpectedColor(float hue, float saturation, float brightness) {
        HsbColor hsbColor = new HsbColor(hue, saturation, brightness);
        assertEquals(hue, hsbColor.getHue());
        assertEquals(saturation, hsbColor.getSaturation());
        assertEquals(brightness, hsbColor.getBrightness());
    }
}

Unfortunately, it’s not compilable since @ValueSource is not @Repeatable

How can I achieve a similar effect in JUnit 5?

I can do this:

    @ParameterizedTest
    @CsvSource({
            "0, 0, 0",
            "0, 35, 35",
            "0, 100, 100",
            "100, 0, 0",
            "100, 35, 35",
            "100, 100, 100",
            "200, 0, 0",
            "200, 35, 35",
            "200, 100, 100",
            "360, 0, 0",
            "360, 35, 35",
            "360, 100, 100"
    })
    void create_withValidArgs_createsExpectedColor(float hue, float saturation, float brightness) {
        HsbColor hsbColor = new HsbColor(hue, saturation, brightness);
        assertEquals(hue, hsbColor.getHue());
        assertEquals(saturation, hsbColor.getSaturation());
        assertEquals(brightness, hsbColor.getBrightness());
    }

The drawback: it’s clumsy and not very readable

I can write three separate tests, but the problem is I can’t test validation of three different param values in isolation. For example, a test that ensures that valid hue values are accepted would in effect test that the other two values passed validation as well (otherwise, the “hue test” would fail)