mg4/app/src/test/java/com/evsuite/abrp/GearTest.java

package com.evsuite.abrp;

import static org.junit.Assert.assertEquals;

import org.junit.Test;

/** The gear letter — pure JVM. */
public class GearTest {

    @Test
    public void theFourCodesReadOnTheCar() {
        assertEquals("P", Gear.label(1));
        assertEquals("R", Gear.label(2));
        assertEquals("N", Gear.label(3));
        assertEquals("D", Gear.label(4));
    }

    @Test
    public void unknownCodesShowNoLetter() {
        assertEquals("", Gear.label(0));
        assertEquals("", Gear.label(5));
        assertEquals("", Gear.label(-1));
    }

    @Test
    public void unreadIsADash() {
        assertEquals("—", Gear.label(null));
    }
}