| /******************************************************************************* |
| * Copyright (C) 2010, Matthias Sohn <matthias.sohn@sap.com> |
| * Copyright (C) 2010, Stefan Lay <stefan.lay@sap.com> |
| * |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| *******************************************************************************/ |
| package org.eclipse.example.calc.internal; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| import org.eclipse.example.calc.Operations; |
| import org.junit.After; |
| import org.junit.Test; |
| |
| public class CalculatorTest { |
| |
| @After |
| public void tearDown() throws Exception { |
| Operations.INSTANCE.reset(); |
| } |
| |
| @Test |
| public void testPlus() { |
| TestTextProvider textProvider = new TestTextProvider(); |
| Calculator calculator = new Calculator(textProvider); |
| |
| calculator.handleButtonClick("1"); |
| calculator.handleButtonClick("+"); |
| calculator.handleButtonClick("2"); |
| calculator.handleButtonClick("="); |
| |
| assertEquals("3.0", textProvider.getDisplayText()); |
| } |
| |
| @Test |
| public void testTwoTimesPlus() { |
| TestTextProvider textProvider = new TestTextProvider(); |
| Calculator calculator = new Calculator(textProvider); |
| |
| calculator.handleButtonClick("1"); |
| calculator.handleButtonClick("+"); |
| calculator.handleButtonClick("2"); |
| calculator.handleButtonClick("+"); |
| calculator.handleButtonClick("3"); |
| calculator.handleButtonClick("="); |
| |
| assertEquals("6.0", textProvider.getDisplayText()); |
| } |
| |
| @Test |
| public void testPlusWithFraction() { |
| TestTextProvider textProvider = new TestTextProvider(); |
| Calculator calculator = new Calculator(textProvider); |
| |
| calculator.handleButtonClick("1"); |
| calculator.handleButtonClick("+"); |
| calculator.handleButtonClick("2"); |
| calculator.handleButtonClick("."); |
| calculator.handleButtonClick("1"); |
| calculator.handleButtonClick("="); |
| |
| assertEquals("3.1", textProvider.getDisplayText()); |
| } |
| |
| @Test |
| public void testSquare() { |
| TestTextProvider textProvider = new TestTextProvider(); |
| Calculator calculator = new Calculator(textProvider); |
| |
| calculator.handleButtonClick("2"); |
| calculator.handleButtonClick("x²"); |
| |
| assertEquals("4.0", textProvider.getDisplayText()); |
| } |
| |
| private static final class TestTextProvider implements TextProvider { |
| |
| private String text = "0"; |
| |
| public void setDisplayText(String text) { |
| this.text = text; |
| |
| } |
| |
| public String getDisplayText() { |
| return text; |
| } |
| |
| } |
| } |