/*
* Copyright 2013 serso aka se.solovyev
*
* 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.
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* Contact details
*
* Email: se.solovyev@gmail.com
* Site: http://se.solovyev.org
*/
package org.solovyev.android.calculator.model;
import jscl.AngleUnit;
import jscl.JsclMathEngine;
import jscl.MathEngine;
import jscl.NumeralBase;
import jscl.math.Expression;
import jscl.math.function.CustomFunction;
import jscl.text.ParseException;
import junit.framework.Assert;
import org.junit.Before;
import org.junit.Test;
import org.solovyev.android.calculator.BaseCalculatorTest;
import org.solovyev.android.calculator.jscl.JsclOperation;
import org.solovyev.android.calculator.variables.CppVariable;
import static org.junit.Assert.fail;
public class AndroidEngineTest extends BaseCalculatorTest {
@Before
public void setUp() throws Exception {
super.setUp();
engine.getMathEngine().setPrecision(3);
}
@Test
public void testDegrees() throws Exception {
final MathEngine me = engine.getMathEngine();
final AngleUnit defaultAngleUnit = me.getAngleUnits();
try {
me.setAngleUnits(AngleUnit.rad);
me.setPrecision(3);
assertError("°");
assertEval("0.017", "1°");
assertEval("0.349", "20.0°");
assertEval("0.5", "sin(30°)");
assertEval("0.524", "asin(sin(30°))");
assertEval("∂(cos(t), t, t, 1°)", "∂(cos(t),t,t,1°)");
assertEval("∂(cos(t), t, t, 1°)", "∂(cos(t),t,t,1°)", JsclOperation.simplify);
} finally {
me.setAngleUnits(defaultAngleUnit);
}
}
@Test
public void testFormatting() throws Exception {
final MathEngine me = engine.getMathEngine();
assertEval("12 345", me.simplify("12345"));
}
@Test
public void testI() throws ParseException {
final MathEngine me = engine.getMathEngine();
assertEval("-i", me.evaluate("i^3"));
for (int i = 0; i < 1000; i++) {
double real = (Math.random() - 0.5) * 1000;
double imag = (Math.random() - 0.5) * 1000;
int exp = (int) (Math.random() * 10);
final StringBuilder sb = new StringBuilder();
sb.append(real);
if (imag > 0) {
sb.append("+");
}
sb.append(imag);
sb.append("^").append(exp);
try {
me.evaluate(sb.toString());
} catch (Throwable e) {
fail(sb.toString());
}
}
}
@Test
public void testEmptyFunction() throws Exception {
final MathEngine me = engine.getMathEngine();
try {
me.evaluate("cos(cos(cos(cos(acos(acos(acos(acos(acos(acos(acos(acos(cos(cos(cos(cos(cosh(acos(cos(cos(cos(cos(cos(acos(acos(acos(acos(acos(acos(acos(acos(cos(cos(cos(cos(cosh(acos(cos())))))))))))))))))))))))))))))))))))))");
Assert.fail();
} catch (ParseException ignored) {
}
assertEval("0.34+1.382i", "ln(ln(ln(ln(ln(ln(ln(ln(ln(ln(ln(ln(ln(ln(ln(100)))))))))))))))");
try {
me.evaluate("cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos())))))))))))))))))))))))))))))))))))");
Assert.fail();
} catch (ParseException ignored) {
}
final AngleUnit defaultAngleUnit = me.getAngleUnits();
try {
me.setAngleUnits(AngleUnit.rad);
assertEval("0.739", me.evaluate("cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(cos(1))))))))))))))))))))))))))))))))))))"));
} finally {
me.setAngleUnits(defaultAngleUnit);
}
engine.getVariablesRegistry().addOrUpdate(CppVariable.builder("si").withValue(5d).build().toJsclConstant());
assertEval("5", me.evaluate("si"));
assertError("sin");
}
@Test
public void testRounding() throws Exception {
final MathEngine me = engine.getMathEngine();
try {
me.setGroupingSeparator('\'');
me.setPrecision(2);
assertEval("12'345'678.9", me.evaluate("1.23456789E7"));
me.setPrecision(10);
assertEval("12'345'678.9", me.evaluate("1.23456789E7"));
assertEval("123'456'789", me.evaluate("1.234567890E8"));
assertEval("1'234'567'890.1", me.evaluate("1.2345678901E9"));
} finally {
me.setPrecision(3);
me.setGroupingSeparator(JsclMathEngine.GROUPING_SEPARATOR_DEFAULT);
}
}
@Test
public void testNumeralSystems() throws Exception {
final MathEngine me = engine.getMathEngine();
assertEval("11 259 375", "0x:ABCDEF");
assertEval("30 606 154.462", "0x:ABCDEF*e");
assertEval("30 606 154.462", "e*0x:ABCDEF");
assertEval("e", "e*0x:ABCDEF/0x:ABCDEF");
assertEval("30 606 154.462", "0x:ABCDEF*e*0x:ABCDEF/0x:ABCDEF");
assertEval("30 606 154.462", "c+0x:ABCDEF*e*0x:ABCDEF/0x:ABCDEF-c+0x:C-0x:C");
assertEval("1 446 257 064 651.832", "28*28 * sin(28) - 0b:1101 + √(28) + exp ( 28) ");
assertEval("13", "0b:1101");
assertError("0b:π");
final NumeralBase defaultNumeralBase = me.getNumeralBase();
try {
me.setNumeralBase(NumeralBase.bin);
assertEval("101", "10+11");
assertEval("0.101", "10/11");
me.setNumeralBase(NumeralBase.hex);
assertEval("63 7B", "56CE+CAD");
assertEval("E", "E");
} finally {
me.setNumeralBase(defaultNumeralBase);
}
}
@Test
public void testLog() throws Exception {
final MathEngine me = engine.getMathEngine();
assertEval("∞", Expression.valueOf("1/0").numeric().toString());
assertEval("∞", Expression.valueOf("ln(10)/ln(1)").numeric().toString());
// logarithm
assertEval("ln(x)/ln(base)", ((CustomFunction) me.getFunctionsRegistry().get("log")).getContent());
assertEval("∞", "log(1, 10)");
assertEval("3.322", "log(2, 10)");
assertEval("1.431", "log(5, 10)");
assertEval("0.96", "log(11, 10)");
assertEval("1/(bln(a))", "∂(log(a, b), b)", JsclOperation.simplify);
assertEval("-ln(b)/(aln(a)^2)", "∂(log(a, b), a)", JsclOperation.simplify);
}
}