import static org.junit.Assert.*;
import org.junit.Test;

public class TriangleCheckerTest {

    @Test
    public void testNotATriangle() {
        assertFalse(TriangleChecker.isTriangle(1, 2, 3));
        assertFalse(TriangleChecker.isTriangle(0, 0, 0));
        assertFalse(TriangleChecker.isTriangle(1, 1, 3));
    }

    @Test
    public void testEquilateral() {
        assertTrue(TriangleChecker.isEquilateral(3, 3, 3));
        assertFalse(TriangleChecker.isEquilateral(3, 3, 4));
    }

    @Test
    public void testIsosceles() {
        assertTrue(TriangleChecker.isIsosceles(3, 3, 4));
        assertTrue(TriangleChecker.isIsosceles(3, 4, 3));
        assertFalse(TriangleChecker.isIsosceles(3, 4, 5));
    }

    @Test
    public void testRightTriangle() {
        assertTrue(TriangleChecker.isRight(3, 4, 5));
        assertTrue(TriangleChecker.isRight(5, 3, 4));
        assertFalse(TriangleChecker.isRight(3, 3, 3));
    }

    @Test
    public void testScalene() {
        assertTrue(TriangleChecker.isTriangle(5, 4, 3));
        assertFalse(TriangleChecker.isIsosceles(5, 4, 3));
        assertTrue(TriangleChecker.isRight(5, 4, 3));
    }
}