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- /*
- * Copyright 2000-2013 Vaadin Ltd.
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not
- * use this file except in compliance with the License. You may obtain a copy of
- * the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
- * License for the specific language governing permissions and limitations under
- * the License.
- */
- package com.vaadin.sass.internal.expression;
-
- import org.junit.Assert;
- import org.junit.Test;
- import org.w3c.css.sac.LexicalUnit;
-
- import com.vaadin.sass.internal.expression.exception.IncompatibleUnitsException;
- import com.vaadin.sass.internal.parser.LexicalUnitImpl;
-
- public class ArithmeticExpressionEvaluatorTest {
- private ArithmeticExpressionEvaluator evaluator = new ArithmeticExpressionEvaluator();
-
- @Test
- public void testPrecedenceSameAsAppearOrder() {
- // 2 * 3 - 4 = 2
- LexicalUnitImpl operand2 = LexicalUnitImpl.createInteger(0, 0, null, 2);
- LexicalUnitImpl operatorMultiply = LexicalUnitImpl.createMultiply(0, 0,
- operand2);
- LexicalUnitImpl operand3 = LexicalUnitImpl.createInteger(0, 0,
- operatorMultiply, 3);
- LexicalUnitImpl operatorMinus = LexicalUnitImpl.createMinus(0, 0,
- operand3);
- LexicalUnitImpl operand4 = LexicalUnitImpl.createInteger(0, 0,
- operatorMinus, 4);
- LexicalUnitImpl result = evaluator.evaluate(operand2);
- Assert.assertEquals(2, result.getIntegerValue());
- }
-
- @Test
- public void testPrecedenceDifferFromAppearOrder() {
- // 2 - 3 * 4 = -10
- LexicalUnitImpl operand2 = LexicalUnitImpl.createInteger(0, 0, null, 2);
- LexicalUnitImpl operatorMinus = LexicalUnitImpl.createMinus(0, 0,
- operand2);
- LexicalUnitImpl operand3 = LexicalUnitImpl.createInteger(0, 0,
- operatorMinus, 3);
- LexicalUnitImpl operatorMultiply = LexicalUnitImpl.createMultiply(0, 0,
- operand3);
- LexicalUnitImpl operand4 = LexicalUnitImpl.createInteger(0, 0,
- operatorMultiply, 4);
- LexicalUnitImpl result = evaluator.evaluate(operand2);
- Assert.assertEquals(-10, result.getIntegerValue());
- }
-
- @Test(expected = IncompatibleUnitsException.class)
- public void testIncompatibleUnit() {
- // 2cm - 3px
- LexicalUnitImpl operand2 = LexicalUnitImpl.createCM(0, 0, null, 2);
- LexicalUnitImpl operatorMinus = LexicalUnitImpl.createMinus(0, 0,
- operand2);
- LexicalUnitImpl operand3 = LexicalUnitImpl.createPX(0, 0,
- operatorMinus, 3);
- evaluator.evaluate(operand2);
- }
-
- @Test
- public void testMultiplyWithUnitInfirstOperand() {
- // 2cm * 3 = 6cm
- LexicalUnitImpl operand2cm = LexicalUnitImpl.createCM(0, 0, null, 2);
- LexicalUnitImpl operatorMultiply = LexicalUnitImpl.createMultiply(0, 0,
- operand2cm);
- LexicalUnitImpl operand3 = LexicalUnitImpl.createInteger(0, 0,
- operatorMultiply, 3);
- LexicalUnitImpl result = evaluator.evaluate(operand2cm);
- Assert.assertEquals(6, result.getIntegerValue());
- Assert.assertEquals(LexicalUnit.SAC_CENTIMETER,
- result.getLexicalUnitType());
- }
-
- @Test
- public void testMultiplyWithUnitInSecondOperand() {
- // 2 * 3cm = 6cm
- LexicalUnitImpl operand2 = LexicalUnitImpl.createInteger(0, 0, null, 2);
- LexicalUnitImpl operatorMultiply = LexicalUnitImpl.createMultiply(0, 0,
- operand2);
- LexicalUnitImpl operand3cm = LexicalUnitImpl.createCM(0, 0,
- operatorMultiply, 3);
- LexicalUnitImpl result = evaluator.evaluate(operand2);
- Assert.assertEquals(6, result.getIntegerValue());
- Assert.assertEquals(LexicalUnit.SAC_CENTIMETER,
- result.getLexicalUnitType());
- }
-
- @Test
- public void testDivideWithSameUnit() {
- // 4cm / 2cm = 2
- LexicalUnitImpl operand4cm = LexicalUnitImpl.createCM(0, 0, null, 4);
- LexicalUnitImpl operatorDivide = LexicalUnitImpl.createSlash(0, 0,
- operand4cm);
- LexicalUnitImpl operand2cm = LexicalUnitImpl.createCM(0, 0,
- operatorDivide, 2);
- LexicalUnitImpl result = evaluator.evaluate(operand4cm);
- Assert.assertEquals(2, result.getIntegerValue());
- Assert.assertEquals(LexicalUnit.SAC_REAL, result.getLexicalUnitType());
- }
-
- @Test
- public void testDivideDenominatorWithoutUnit() {
- // 4cm / 2 = 2cm
- LexicalUnitImpl operand4cm = LexicalUnitImpl.createCM(0, 0, null, 4);
- LexicalUnitImpl operatorDivide = LexicalUnitImpl.createSlash(0, 0,
- operand4cm);
- LexicalUnitImpl operand2 = LexicalUnitImpl.createInteger(0, 0,
- operatorDivide, 2);
- LexicalUnitImpl result = evaluator.evaluate(operand4cm);
- Assert.assertEquals(2, result.getIntegerValue());
- Assert.assertEquals(LexicalUnit.SAC_CENTIMETER,
- result.getLexicalUnitType());
- }
- }
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