Initial commit

2021-03-23 22:54:32 +01:00
commit b41d133be1
106 changed files with 5423 additions and 0 deletions
@@ -0,0 +1,113 @@
+package encapsulation;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+public class RPNCalcTest{
+	
+	private RPNCalc calc;
+	
+	@BeforeEach
+	public void setup() {
+		calc = new RPNCalc();
+	}
+	
+	@Test
+	public void testPush() {
+		calc.push(1.0);
+		Assertions.assertEquals(1.0, calc.peek(0));
+		
+		calc.push(2.0);
+		Assertions.assertEquals(2.0, calc.peek(0));
+		
+		calc.push(3.0);
+		Assertions.assertEquals(3.0, calc.peek(0));
+	}
+	
+	@Test
+	public void testPop() {
+		calc.push(1.0);
+		calc.push(2.0);
+		calc.push(3.0);
+		Assertions.assertEquals(3.0, calc.peek(0));
+		
+		Assertions.assertEquals(3.0, calc.pop());
+		Assertions.assertEquals(2.0, calc.peek(0));
+		
+		Assertions.assertEquals(2.0, calc.pop());
+		Assertions.assertEquals(1.0, calc.peek(0));
+		
+		calc.push(2.0);
+		Assertions.assertEquals(2.0, calc.peek(0));
+		
+		Assertions.assertEquals(2.0, calc.pop());
+		Assertions.assertEquals(1.0, calc.peek(0));
+		
+		Assertions.assertEquals(1.0, calc.pop());
+		Assertions.assertEquals(0, calc.getSize());
+	}
+	
+	@Test
+	public void testPeek() {
+		calc.push(0.0);
+		calc.push(1.0);
+		calc.push(2.0);
+		Assertions.assertEquals(2.0, calc.peek(0));
+		Assertions.assertEquals(1.0, calc.peek(1));
+		Assertions.assertEquals(0.0, calc.peek(2));
+	}
+	
+	@Test
+	public void testEmptyStack() {
+		Assertions.assertEquals(Double.NaN, calc.peek(3));
+		Assertions.assertEquals(Double.NaN, calc.peek(-1));
+	}
+	
+	@Test
+	public void testGetSize() {
+		Assertions.assertEquals(0, calc.getSize());
+		calc.push(1.0);
+		Assertions.assertEquals(1, calc.getSize());
+		calc.push(2.0);
+		Assertions.assertEquals(2, calc.getSize());
+	}
+	
+	@Test
+	public void testAddOperation() {
+		calc.push(3.0);
+		calc.push(4.0);
+		calc.performOperation('+');
+		Assertions.assertEquals(1, calc.getSize());
+		Assertions.assertEquals(7.0, calc.peek(0));
+	}
+	
+	@Test
+	public void testSubOperation() {
+		calc.push(7.0);
+		calc.push(2.0);
+		calc.performOperation('-');
+		Assertions.assertEquals(1, calc.getSize());
+		Assertions.assertEquals(5.0, calc.peek(0));
+	}
+	
+	@Test
+	public void testMultOperation() {
+		calc.push(5.0);
+		calc.push(2.0);
+		calc.performOperation('*');
+		Assertions.assertEquals(1, calc.getSize());
+		Assertions.assertEquals(10.0, calc.peek(0));
+	}
+	
+	@Test
+	public void testDivOperation() {
+		calc.push(10.0);
+		calc.push(4.0);
+		calc.performOperation('/');
+		Assertions.assertEquals(1, calc.getSize());
+		Assertions.assertEquals(2.5, calc.peek(0));
+	
+	}
+	
+}