| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.nemo.common.test; |
| |
| import org.apache.nemo.common.exception.OutputMismatchException; |
| |
| import java.io.IOException; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.Set; |
| import java.util.stream.Collectors; |
| import java.util.stream.Stream; |
| |
| /** |
| * Test Utils for Examples. |
| */ |
| public final class ExampleTestUtil { |
| private static final Double ERROR = 1e-8; |
| |
| /** |
| * Private constructor. |
| */ |
| private ExampleTestUtil() { |
| } |
| |
| /** |
| * Ensures output correctness with the given test resource file. |
| * |
| * @param resourcePath root folder for both resources. |
| * @param outputFileName output file name. |
| * @param testResourceFileName the test result file name. |
| * @throws IOException if the output is invalid. |
| */ |
| public static void ensureOutputValidity(final String resourcePath, |
| final String outputFileName, |
| final String testResourceFileName) throws IOException { |
| |
| final String testOutput; |
| try (Stream<Path> fileStream = Files.list(Paths.get(resourcePath))) { |
| testOutput = fileStream |
| .filter(Files::isRegularFile) |
| // TODO 346: Do not use test file prefixes |
| // i.e., replace startsWith() with something like regex matching |
| .filter(path -> path.getFileName().toString().startsWith(outputFileName)) |
| .flatMap(path -> { |
| try { |
| return Files.lines(path); |
| } catch (final IOException e) { |
| throw new OutputMismatchException(e); |
| } |
| }) |
| .sorted() |
| .reduce("", (p, q) -> (p + "\n" + q)); |
| } |
| |
| final String resourceOutput; |
| |
| try (Stream<String> lineStream = Files.lines(Paths.get(resourcePath + testResourceFileName))) { |
| resourceOutput = lineStream |
| .sorted() |
| .reduce("", (p, q) -> (p + "\n" + q)); |
| } |
| |
| if (!testOutput.equals(resourceOutput)) { |
| final String outputMsg = |
| "Test output mismatch while comparing [" + outputFileName + "] from [" + testResourceFileName + "] under " |
| + resourcePath + ":\n" |
| + "=============" + outputFileName + "==================" |
| + testOutput |
| + "\n=============" + testResourceFileName + "==================" |
| + resourceOutput |
| + "\n==============================="; |
| throw new OutputMismatchException(outputMsg); |
| } |
| } |
| |
| /** |
| * This method test the output validity of AlternatingLeastSquareITCase. |
| * Due to the floating point math error, the output of the test can be different every time. |
| * Thus we cannot compare plain text output, but have to check its numeric error. |
| * |
| * @param resourcePath path to resources. |
| * @param outputFileName name of output file. |
| * @param testResourceFileName name of the file to compare the outputs to. |
| * @throws RuntimeException if the output is invalid. |
| * @throws IOException exception. |
| */ |
| public static void ensureALSOutputValidity(final String resourcePath, |
| final String outputFileName, |
| final String testResourceFileName) throws IOException { |
| |
| final List<List<Double>> testOutput; |
| try (Stream<Path> fileStream = Files.list(Paths.get(resourcePath))) { |
| testOutput = fileStream |
| .filter(Files::isRegularFile) |
| .filter(path -> path.getFileName().toString().startsWith(outputFileName)) |
| .flatMap(path -> { |
| try { |
| return Files.lines(path); |
| } catch (final IOException e) { |
| throw new RuntimeException(e); |
| } |
| }) |
| .sorted() |
| .filter(line -> !line.trim().equals("")) |
| .map(line -> Arrays.asList(line.split("\\s*,\\s*")) |
| .stream().map(s -> Double.valueOf(s)).collect(Collectors.toList())) |
| .collect(Collectors.toList()); |
| } |
| |
| final List<List<Double>> resourceOutput; |
| try (Stream<String> lineStream = Files.lines(Paths.get(resourcePath + testResourceFileName))) { |
| resourceOutput = lineStream |
| .sorted() |
| .filter(line -> !line.trim().equals("")) |
| .map(line -> Arrays.asList(line.split("\\s*,\\s*")) |
| .stream().map(s -> Double.valueOf(s)).collect(Collectors.toList())) |
| .collect(Collectors.toList()); |
| } |
| |
| if (testOutput.size() != resourceOutput.size()) { |
| throw new RuntimeException("output mismatch"); |
| } |
| |
| for (int i = 0; i < testOutput.size(); i++) { |
| for (int j = 0; j < testOutput.get(i).size(); j++) { |
| final Double testElement = testOutput.get(i).get(j); |
| final Double resourceElement = resourceOutput.get(i).get(j); |
| if (Math.abs(testElement - resourceElement) / resourceElement > ERROR) { |
| throw new RuntimeException("output mismatch between " + testElement + " and " + resourceElement); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Delete output files. |
| * |
| * @param directory the path of file directory. |
| * @param outputFileName the output file prefix. |
| * @throws IOException if fail to delete. |
| */ |
| public static void deleteOutputFile(final String directory, |
| final String outputFileName) throws IOException { |
| try (Stream<Path> fileStream = Files.list(Paths.get(directory))) { |
| final Set<Path> outputFilePaths = fileStream |
| .filter(Files::isRegularFile) |
| .filter(path -> path.getFileName().toString().startsWith(outputFileName)) |
| .collect(Collectors.toSet()); |
| for (final Path outputFilePath : outputFilePaths) { |
| Files.delete(outputFilePath); |
| } |
| } |
| } |
| } |