@Hex

@Hex is an annotation that decodes hexadecimal String instances into byte[] instances:

import io.github.scordio.junit.converters.Hex;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.ValueSource;

@ParameterizedTest
@ValueSource(strings = { "0x0A1B2C", "0A1B2C" })
void test(@Hex byte[] bytes) {
    assertArrayEquals(new byte[] { 0x0A, 0x1B, 0x2C }, bytes);
}

The input strings are treated as case-insensitive and can be prefixed by 0x.

The following source types and target declarations are supported.

Source Type	Target Declaration	Example
String	@Hex byte[]	"0A1B2C"/"0a1b2c"/"0x0A1B2C"/"0x0a1b2c" → new byte[] { 0x0A, 0x1B, 0x2C }