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

import org.junit.jupiter.api.Test;

class LameMathTest {

  @Test
  void testSum() {
    assertEquals(10, LameMath.sum(2,8));
    assertEquals(-10, LameMath.sum(-2,-8));
    assertEquals(-6, LameMath.sum(2,-8));
    assertEquals(0, LameMath.sum(0,0));
  }

  @Test
  void testDiff() {
    assertEquals(8, LameMath.diff(10, 2));
    assertEquals(12, LameMath.diff(10, -2));
    assertEquals(0, LameMath.diff(10, 10));
    assertEquals(-12, LameMath.diff(-10, 2));
  }

  //	@Test
  //	void testProd() {
  //		fail("Not yet implemented");
  //	}
  //
  //	@Test
  //	void testQuot() {
  //		fail("Not yet implemented");
  //	}

  @Test
  void testIsEven() {
    //	 assertEquals(true, LameMath.isEven(10));
	assertTrue(LameMath.isEven(2));
	assertTrue(LameMath.isEven(42));
	assertTrue(LameMath.isEven(-16));
	assertFalse(LameMath.isEven(-1));
	assertFalse(LameMath.isEven(11));
  }
}