| /* |
| * Copyright (C) 2018, Thomas Wolf <thomas.wolf@paranor.ch> and others |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Distribution License v. 1.0 which is available at |
| * https://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| package org.eclipse.jgit.treewalk; |
| |
| import static org.junit.Assert.fail; |
| |
| import org.eclipse.jgit.api.Git; |
| import org.eclipse.jgit.junit.RepositoryTestCase; |
| import org.eclipse.jgit.treewalk.filter.PathFilter; |
| import org.junit.Test; |
| |
| /** |
| * Simple performance test for git add / FileTreeIterator. |
| */ |
| public class FileTreeIteratorPerformanceTest extends RepositoryTestCase { |
| |
| private static int N_OF_FILES = 501; |
| |
| @Test |
| public void testPerformance() throws Exception { |
| try (Git git = new Git(db)) { |
| long times[] = new long[N_OF_FILES]; |
| long sum = 0; |
| String lastName = null; |
| for (int i = 0; i < N_OF_FILES; i++) { |
| lastName = "a" + (i + 100000) + ".txt"; |
| writeTrashFile(lastName, ""); |
| long start = System.nanoTime(); |
| git.add().addFilepattern(lastName).call(); |
| long elapsed = System.nanoTime() - start; |
| times[i] = elapsed; |
| sum += elapsed; |
| } |
| System.out.println("Total (µs) " + sum / 1000.0); |
| for (int i = 0; i < times.length; i++) { |
| System.out |
| .println("Time " + i + " (µs) = " + times[i] / 1000.0); |
| } |
| FileTreeIterator iter = new FileTreeIterator(db); |
| try (TreeWalk walk = new TreeWalk(db)) { |
| walk.setFilter(PathFilter.create(lastName)); |
| walk.addTree(iter); |
| long start = System.nanoTime(); |
| if (walk.next()) { |
| System.out.println("Walk time (µs) = " |
| + (System.nanoTime() - start) / 1000.0); |
| } else { |
| fail("File not found"); |
| } |
| } |
| } |
| } |
| } |