TriangleCheckerAssignment/test/TriangleCheckerTest.java

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

public class TriangleCheckerTest {

    @Test
    public void testValidTriangle() {

        // Arrange
        float a = 2;
        float b = 3;
        float c = 4;
        float d = 32;
        float e = 8;
        float f = 0;
        float g = 6;
        float h = 9;
        float i = 28;

        // Act
        TriangleChecker.TriangleType normal = TriangleChecker.TriangleType.NORMAL;
        TriangleChecker.TriangleType none = TriangleChecker.TriangleType.NONE;
        TriangleChecker.TriangleType isoceles = TriangleChecker.TriangleType.ISOSCELES;
        TriangleChecker.TriangleType equilateral = TriangleChecker.TriangleType.EQUILATERAL;

        assertTrue(TriangleChecker.checkTriangleShape(a, b, c));
        assertFalse(TriangleChecker.checkTriangleShape(a, d, c));
        assertFalse(TriangleChecker.checkTriangleShape(e, d, e));
        assertFalse(TriangleChecker.checkTriangleShape(a, f, h));
        assertFalse(TriangleChecker.checkTriangleShape(i, c, d));
        assertTrue(TriangleChecker.checkTriangleShape(g, i, d));

        // Assert
        assertEquals(normal, testTriangle(a, b, c));
        assertEquals(none, testTriangle(a, b, d));
        assertEquals(none, testTriangle(a, f, d));
        assertEquals(none, testTriangle(f, f, d));
        assertEquals(none, testTriangle(c, c, d));
        assertEquals(equilateral, testTriangle(a, a, a));
        assertEquals(isoceles, testTriangle(a, d, d));

    }

    public TriangleChecker.TriangleType testTriangle(float side1, float side2, float side3) {

        return TriangleChecker.checkTriangle(side1, side2, side3);

    }

}