| /* |
| * Copyright (C) 2009, Google Inc. |
| * Copyright (C) 2009, Johannes E. Schindelin <johannes.schindelin@gmx.de> 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.diff; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.fail; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| import org.eclipse.jgit.junit.JGitTestUtil; |
| import org.eclipse.jgit.patch.FileHeader; |
| import org.eclipse.jgit.patch.Patch; |
| import org.eclipse.jgit.util.RawParseUtils; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| public class DiffFormatterReflowTest { |
| private RawText a; |
| |
| private RawText b; |
| |
| private FileHeader file; |
| |
| private ByteArrayOutputStream out; |
| |
| private DiffFormatter fmt; |
| |
| @Before |
| public void setUp() throws Exception { |
| out = new ByteArrayOutputStream(); |
| fmt = new DiffFormatter(out); |
| } |
| |
| @Test |
| public void testNegativeContextFails() throws IOException { |
| init("X"); |
| try { |
| fmt.setContext(-1); |
| fail("accepted negative context"); |
| } catch (IllegalArgumentException e) { |
| // pass |
| } |
| } |
| |
| @Test |
| public void testContext0() throws IOException { |
| init("X"); |
| fmt.setContext(0); |
| assertFormatted(); |
| } |
| |
| @Test |
| public void testContext1() throws IOException { |
| init("X"); |
| fmt.setContext(1); |
| assertFormatted(); |
| } |
| |
| @Test |
| public void testContext3() throws IOException { |
| init("X"); |
| fmt.setContext(3); |
| assertFormatted(); |
| } |
| |
| @Test |
| public void testContext5() throws IOException { |
| init("X"); |
| fmt.setContext(5); |
| assertFormatted(); |
| } |
| |
| @Test |
| public void testContext10() throws IOException { |
| init("X"); |
| fmt.setContext(10); |
| assertFormatted(); |
| } |
| |
| @Test |
| public void testContext100() throws IOException { |
| init("X"); |
| fmt.setContext(100); |
| assertFormatted(); |
| } |
| |
| @Test |
| public void testEmpty1() throws IOException { |
| init("E"); |
| assertFormatted("E.patch"); |
| } |
| |
| @Test |
| public void testNoNewLine1() throws IOException { |
| init("Y"); |
| assertFormatted("Y.patch"); |
| } |
| |
| @Test |
| public void testNoNewLine2() throws IOException { |
| init("Z"); |
| assertFormatted("Z.patch"); |
| } |
| |
| private void init(String name) throws IOException { |
| a = new RawText(readFile(name + "_PreImage")); |
| b = new RawText(readFile(name + "_PostImage")); |
| file = parseTestPatchFile(name + ".patch").getFiles().get(0); |
| } |
| |
| private void assertFormatted() throws IOException { |
| assertFormatted(JGitTestUtil.getName() + ".out"); |
| } |
| |
| private void assertFormatted(String name) throws IOException { |
| fmt.format(file, a, b); |
| final String exp = RawParseUtils.decode(readFile(name)); |
| assertEquals(exp, RawParseUtils.decode(out.toByteArray())); |
| } |
| |
| private byte[] readFile(String patchFile) throws IOException { |
| final InputStream in = getClass().getResourceAsStream(patchFile); |
| if (in == null) { |
| fail("No " + patchFile + " test vector"); |
| return null; // Never happens |
| } |
| try { |
| final byte[] buf = new byte[1024]; |
| final ByteArrayOutputStream temp = new ByteArrayOutputStream(); |
| int n; |
| while ((n = in.read(buf)) > 0) |
| temp.write(buf, 0, n); |
| return temp.toByteArray(); |
| } finally { |
| in.close(); |
| } |
| } |
| |
| private Patch parseTestPatchFile(String patchFile) throws IOException { |
| try (InputStream in = getClass().getResourceAsStream(patchFile)) { |
| if (in == null) { |
| fail("No " + patchFile + " test vector"); |
| return null; // Never happens |
| } |
| final Patch p = new Patch(); |
| p.parse(in); |
| return p; |
| } |
| } |
| } |