114 lines
2.4 KiB
Java
114 lines
2.4 KiB
Java
package encapsulation;
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import org.junit.jupiter.api.Assertions;
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import org.junit.jupiter.api.BeforeEach;
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import org.junit.jupiter.api.Test;
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public class RPNCalcTest{
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private RPNCalc calc;
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@BeforeEach
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public void setup() {
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calc = new RPNCalc();
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}
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@Test
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public void testPush() {
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calc.push(1.0);
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Assertions.assertEquals(1.0, calc.peek(0));
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calc.push(2.0);
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Assertions.assertEquals(2.0, calc.peek(0));
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calc.push(3.0);
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Assertions.assertEquals(3.0, calc.peek(0));
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}
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@Test
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public void testPop() {
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calc.push(1.0);
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calc.push(2.0);
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calc.push(3.0);
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Assertions.assertEquals(3.0, calc.peek(0));
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Assertions.assertEquals(3.0, calc.pop());
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Assertions.assertEquals(2.0, calc.peek(0));
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Assertions.assertEquals(2.0, calc.pop());
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Assertions.assertEquals(1.0, calc.peek(0));
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calc.push(2.0);
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Assertions.assertEquals(2.0, calc.peek(0));
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Assertions.assertEquals(2.0, calc.pop());
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Assertions.assertEquals(1.0, calc.peek(0));
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Assertions.assertEquals(1.0, calc.pop());
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Assertions.assertEquals(0, calc.getSize());
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}
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@Test
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public void testPeek() {
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calc.push(0.0);
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calc.push(1.0);
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calc.push(2.0);
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Assertions.assertEquals(2.0, calc.peek(0));
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Assertions.assertEquals(1.0, calc.peek(1));
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Assertions.assertEquals(0.0, calc.peek(2));
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}
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@Test
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public void testEmptyStack() {
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Assertions.assertEquals(Double.NaN, calc.peek(3));
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Assertions.assertEquals(Double.NaN, calc.peek(-1));
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}
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@Test
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public void testGetSize() {
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Assertions.assertEquals(0, calc.getSize());
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calc.push(1.0);
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Assertions.assertEquals(1, calc.getSize());
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calc.push(2.0);
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Assertions.assertEquals(2, calc.getSize());
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}
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@Test
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public void testAddOperation() {
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calc.push(3.0);
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calc.push(4.0);
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calc.performOperation('+');
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Assertions.assertEquals(1, calc.getSize());
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Assertions.assertEquals(7.0, calc.peek(0));
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}
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@Test
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public void testSubOperation() {
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calc.push(7.0);
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calc.push(2.0);
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calc.performOperation('-');
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Assertions.assertEquals(1, calc.getSize());
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Assertions.assertEquals(5.0, calc.peek(0));
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}
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@Test
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public void testMultOperation() {
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calc.push(5.0);
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calc.push(2.0);
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calc.performOperation('*');
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Assertions.assertEquals(1, calc.getSize());
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Assertions.assertEquals(10.0, calc.peek(0));
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}
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@Test
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public void testDivOperation() {
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calc.push(10.0);
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calc.push(4.0);
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calc.performOperation('/');
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Assertions.assertEquals(1, calc.getSize());
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Assertions.assertEquals(2.5, calc.peek(0));
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}
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}
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