Java tutorial
/************************************************************************* * * * This file is part of the 20n/act project. * * 20n/act enables DNA prediction for synthetic biology/bioengineering. * * Copyright (C) 2017 20n Labs, Inc. * * * * Please direct all queries to act@20n.com. * * * * This program is free software: you can redistribute it and/or modify * * it under the terms of the GNU General Public License as published by * * the Free Software Foundation, either version 3 of the License, or * * (at your option) any later version. * * * * This program is distributed in the hope that it will be useful, * * but WITHOUT ANY WARRANTY; without even the implied warranty of * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * * GNU General Public License for more details. * * * * You should have received a copy of the GNU General Public License * * along with this program. If not, see <http://www.gnu.org/licenses/>. * * * *************************************************************************/ package com.act.lcms; import com.act.utils.TSVParser; import org.apache.commons.lang3.tuple.Pair; import org.junit.Test; import java.io.InputStream; import java.util.List; import java.util.Map; import static org.junit.Assert.assertEquals; public class MassCalculator2Test { public static final String TEST_CASE_RESOURCE = "mass_calculator_test_cases.txt"; public static final Double ACCEPTABLE_MASS_DELTA_THRESHOLD = 0.00054858; // one electron's mass in Daltons. @Test public void testMC2MatchesMC1WithinMeaningfulTolerance() throws Exception { List<Map<String, String>> rows; try (InputStream is = MassCalculator2Test.class.getResourceAsStream(TEST_CASE_RESOURCE)) { TSVParser parser = new TSVParser(); parser.parse(is); rows = parser.getResults(); } int testCase = 1; for (Map<String, String> row : rows) { String inchi = row.get("InChI"); Double expectedMass = Double.valueOf(row.get("Mass")); Integer expectedCharge = Integer.valueOf(row.get("Charge")); Pair<Double, Integer> actualMassAndCharge = MassCalculator2.calculateMassAndCharge(inchi); Double threshold = ACCEPTABLE_MASS_DELTA_THRESHOLD; if (actualMassAndCharge.getRight() < 0) { // Widen the window for added electrons' masses included in Chemaxon's calculations for negative ions. threshold += ACCEPTABLE_MASS_DELTA_THRESHOLD * -1.0 * actualMassAndCharge.getRight().doubleValue(); } else if (actualMassAndCharge.getRight() > 0) { // Positively charged molecules have the missing electrons' masses subtracted threshold += ACCEPTABLE_MASS_DELTA_THRESHOLD * actualMassAndCharge.getRight().doubleValue(); } assertEquals( String.format("Case %d: mass for %s is within delta threshold: %.6f vs. %.6f", testCase, inchi, expectedMass, actualMassAndCharge.getLeft()), expectedMass, actualMassAndCharge.getLeft(), threshold); assertEquals(String.format("Case %d: charge %s matches expected", testCase, inchi), expectedCharge, actualMassAndCharge.getRight()); testCase++; } } }