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- /*
- * 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;
- }
- }
- }
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