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- /*
- * Copyright (C) 2015, 2020 Ivan Motsch <ivan.motsch@bsiag.com> 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.api;
-
- import static java.nio.charset.StandardCharsets.UTF_8;
- import static org.eclipse.jgit.lib.CoreConfig.EolStreamType.AUTO_CRLF;
- import static org.eclipse.jgit.lib.CoreConfig.EolStreamType.AUTO_LF;
- import static org.eclipse.jgit.lib.CoreConfig.EolStreamType.DIRECT;
- import static org.eclipse.jgit.lib.CoreConfig.EolStreamType.TEXT_CRLF;
- import static org.eclipse.jgit.lib.CoreConfig.EolStreamType.TEXT_LF;
- import static org.junit.Assert.assertArrayEquals;
-
- import java.io.ByteArrayInputStream;
- import java.io.ByteArrayOutputStream;
- import java.io.InputStream;
- import java.io.OutputStream;
- import java.util.Arrays;
-
- import org.eclipse.jgit.lib.CoreConfig.EolStreamType;
- import org.eclipse.jgit.util.IO;
- import org.eclipse.jgit.util.io.EolStreamTypeUtil;
- import org.junit.Test;
-
- /**
- * Unit tests for end-of-line conversion streams
- */
- public class EolStreamTypeUtilTest {
-
- @Test
- public void testCheckoutDirect() throws Exception {
- testCheckout(DIRECT, DIRECT, "", "");
- testCheckout(DIRECT, DIRECT, "\r", "\r");
- testCheckout(DIRECT, DIRECT, "\n", "\n");
-
- testCheckout(DIRECT, DIRECT, "\r\n", "\r\n");
- testCheckout(DIRECT, DIRECT, "\n\r", "\n\r");
-
- testCheckout(DIRECT, DIRECT, "\n\r\n", "\n\r\n");
- testCheckout(DIRECT, DIRECT, "\r\n\r", "\r\n\r");
-
- testCheckout(DIRECT, DIRECT, "a\nb\n", "a\nb\n");
- testCheckout(DIRECT, DIRECT, "a\rb\r", "a\rb\r");
- testCheckout(DIRECT, DIRECT, "a\n\rb\n\r", "a\n\rb\n\r");
- testCheckout(DIRECT, DIRECT, "a\r\nb\r\n", "a\r\nb\r\n");
- }
-
- @Test
- public void testCheckoutLF() throws Exception {
- testCheckout(TEXT_LF, AUTO_LF, "", "");
- testCheckout(TEXT_LF, AUTO_LF, "\r", "\r");
- testCheckout(TEXT_LF, AUTO_LF, "\n", "\n");
-
- testCheckout(TEXT_LF, null, "\r\n", "\n");
- testCheckout(null, AUTO_LF, "\r\n", "\r\n");
- testCheckout(TEXT_LF, AUTO_LF, "\n\r", "\n\r");
-
- testCheckout(TEXT_LF, null, "\n\r\n", "\n\n");
- testCheckout(null, AUTO_LF, "\n\r\n", "\n\r\n");
- testCheckout(TEXT_LF, null, "\r\n\r", "\n\r");
- testCheckout(null, AUTO_LF, "\r\n\r", "\r\n\r");
-
- testCheckout(TEXT_LF, AUTO_LF, "a\nb\n", "a\nb\n");
- testCheckout(TEXT_LF, AUTO_LF, "a\rb\r", "a\rb\r");
- testCheckout(TEXT_LF, AUTO_LF, "a\n\rb\n\r", "a\n\rb\n\r");
- testCheckout(TEXT_LF, null, "a\r\nb\r\n", "a\nb\n");
- testCheckout(null, AUTO_LF, "a\r\nb\r\n", "a\r\nb\r\n");
- }
-
- @Test
- public void testCheckoutCRLF() throws Exception {
- testCheckout(TEXT_CRLF, AUTO_CRLF, "", "");
- testCheckout(TEXT_CRLF, AUTO_CRLF, "\r", "\r");
- testCheckout(TEXT_CRLF, AUTO_CRLF, "\n", "\r\n");
-
- testCheckout(TEXT_CRLF, AUTO_CRLF, "\r\n", "\r\n");
- testCheckout(TEXT_CRLF, AUTO_CRLF, "\n\r", "\r\n\r");
-
- testCheckout(TEXT_CRLF, AUTO_CRLF, "\n\r\n", "\r\n\r\n");
- testCheckout(TEXT_CRLF, AUTO_CRLF, "\r\n\r", "\r\n\r");
-
- testCheckout(TEXT_CRLF, AUTO_CRLF, "a\nb\n", "a\r\nb\r\n");
- testCheckout(TEXT_CRLF, AUTO_CRLF, "a\rb\r", "a\rb\r");
- testCheckout(TEXT_CRLF, AUTO_CRLF, "a\n\rb\n\r", "a\r\n\rb\r\n\r");
- testCheckout(TEXT_CRLF, AUTO_CRLF, "a\r\nb\r\n", "a\r\nb\r\n");
- }
-
- /**
- * Test stream type detection based on stream content.
- * <p>
- * Tests three things with the output text:
- * <p>
- * 1) conversion if output was declared as text
- * <p>
- * 2) conversion if output was declared as potentially text (AUTO_...) and
- * is in fact text
- * <p>
- * 3) conversion if modified output (now with binary characters) was
- * declared as potentially text but now contains binary characters
- * <p>
- *
- * @param streamTypeText
- * is the enum meaning that the output is definitely text (no
- * binary check at all)
- * @param streamTypeWithBinaryCheck
- * is the enum meaning that the output may be text (binary check
- * is done)
- * @param output
- * is a text output without binary characters
- * @param expectedConversion
- * is the expected converted output without binary characters
- * @throws Exception
- */
- private void testCheckout(EolStreamType streamTypeText,
- EolStreamType streamTypeWithBinaryCheck, String output,
- String expectedConversion) throws Exception {
- ByteArrayOutputStream b;
- byte[] outputBytes = output.getBytes(UTF_8);
- byte[] expectedConversionBytes = expectedConversion.getBytes(UTF_8);
-
- if (streamTypeText != null) {
- // test using output text and assuming it was declared TEXT
- b = new ByteArrayOutputStream();
- try (OutputStream out = EolStreamTypeUtil.wrapOutputStream(b,
- streamTypeText)) {
- out.write(outputBytes);
- }
- assertArrayEquals(expectedConversionBytes, b.toByteArray());
- }
- if (streamTypeWithBinaryCheck != null) {
- // test using output text and assuming it was declared AUTO, using
- // binary detection
- b = new ByteArrayOutputStream();
- try (OutputStream out = EolStreamTypeUtil.wrapOutputStream(b,
- streamTypeWithBinaryCheck)) {
- out.write(outputBytes);
- }
- assertArrayEquals(expectedConversionBytes, b.toByteArray());
- }
- // now pollute output text with some binary bytes
- outputBytes = extendWithBinaryData(outputBytes);
- expectedConversionBytes = extendWithBinaryData(expectedConversionBytes);
-
- if (streamTypeText != null) {
- // again, test using output text and assuming it was declared TEXT
- b = new ByteArrayOutputStream();
- try (OutputStream out = EolStreamTypeUtil.wrapOutputStream(b,
- streamTypeText)) {
- out.write(outputBytes);
- }
- assertArrayEquals(expectedConversionBytes, b.toByteArray());
- }
- if (streamTypeWithBinaryCheck != null) {
- // again, test using output text and assuming it was declared AUTO,
- // using binary detection
- b = new ByteArrayOutputStream();
- try (OutputStream out = EolStreamTypeUtil.wrapOutputStream(b,
- streamTypeWithBinaryCheck)) {
- out.write(outputBytes);
- }
- // expect no conversion
- assertArrayEquals(outputBytes, b.toByteArray());
- }
- }
-
- @Test
- public void testCheckinDirect() throws Exception {
- testCheckin(DIRECT, DIRECT, "", "");
- testCheckin(DIRECT, DIRECT, "\r", "\r");
- testCheckin(DIRECT, DIRECT, "\n", "\n");
-
- testCheckin(DIRECT, DIRECT, "\r\n", "\r\n");
- testCheckin(DIRECT, DIRECT, "\n\r", "\n\r");
-
- testCheckin(DIRECT, DIRECT, "\n\r\n", "\n\r\n");
- testCheckin(DIRECT, DIRECT, "\r\n\r", "\r\n\r");
-
- testCheckin(DIRECT, DIRECT, "a\nb\n", "a\nb\n");
- testCheckin(DIRECT, DIRECT, "a\rb\r", "a\rb\r");
- testCheckin(DIRECT, DIRECT, "a\n\rb\n\r", "a\n\rb\n\r");
- testCheckin(DIRECT, DIRECT, "a\r\nb\r\n", "a\r\nb\r\n");
- }
-
- @Test
- public void testCheckinLF() throws Exception {
- testCheckin(TEXT_LF, AUTO_LF, "", "");
- testCheckin(TEXT_LF, AUTO_LF, "\r", "\r");
- testCheckin(TEXT_LF, AUTO_LF, "\n", "\n");
-
- testCheckin(TEXT_LF, AUTO_LF, "\r\n", "\n");
- testCheckin(TEXT_LF, AUTO_LF, "\n\r", "\n\r");
-
- testCheckin(TEXT_LF, AUTO_LF, "\n\r\n", "\n\n");
- testCheckin(TEXT_LF, AUTO_LF, "\r\n\r", "\n\r");
-
- testCheckin(TEXT_LF, AUTO_LF, "a\nb\n", "a\nb\n");
- testCheckin(TEXT_LF, AUTO_LF, "a\rb\r", "a\rb\r");
- testCheckin(TEXT_LF, AUTO_LF, "a\n\rb\n\r", "a\n\rb\n\r");
- testCheckin(TEXT_LF, AUTO_LF, "a\r\nb\r\n", "a\nb\n");
- }
-
- @Test
- public void testCheckinCRLF() throws Exception {
- testCheckin(TEXT_CRLF, AUTO_CRLF, "", "");
- testCheckin(TEXT_CRLF, AUTO_CRLF, "\r", "\r");
- testCheckin(TEXT_CRLF, AUTO_CRLF, "\n", "\r\n");
-
- testCheckin(TEXT_CRLF, AUTO_CRLF, "\r\n", "\r\n");
- testCheckin(TEXT_CRLF, AUTO_CRLF, "\n\r", "\r\n\r");
-
- testCheckin(TEXT_CRLF, AUTO_CRLF, "\n\r\n", "\r\n\r\n");
- testCheckin(TEXT_CRLF, AUTO_CRLF, "\r\n\r", "\r\n\r");
-
- testCheckin(TEXT_CRLF, AUTO_CRLF, "a\nb\n", "a\r\nb\r\n");
- testCheckin(TEXT_CRLF, AUTO_CRLF, "a\rb\r", "a\rb\r");
- testCheckin(TEXT_CRLF, AUTO_CRLF, "a\n\rb\n\r", "a\r\n\rb\r\n\r");
- testCheckin(TEXT_CRLF, AUTO_CRLF, "a\r\nb\r\n", "a\r\nb\r\n");
- }
-
- /**
- * Test stream type detection based on stream content.
- * <p>
- * Tests three things with the input text:
- * <p>
- * 1) conversion if input was declared as text
- * <p>
- * 2) conversion if input was declared as potentially text (AUTO_...) and is
- * in fact text
- * <p>
- * 3) conversion if modified input (now with binary characters) was declared
- * as potentially text but now contains binary characters
- * <p>
- *
- * @param streamTypeText
- * is the enum meaning that the input is definitely text (no
- * binary check at all)
- * @param streamTypeWithBinaryCheck
- * is the enum meaning that the input may be text (binary check
- * is done)
- * @param input
- * is a text input without binary characters
- * @param expectedConversion
- * is the expected converted input without binary characters
- * @throws Exception
- */
- private void testCheckin(EolStreamType streamTypeText,
- EolStreamType streamTypeWithBinaryCheck, String input,
- String expectedConversion) throws Exception {
- byte[] inputBytes = input.getBytes(UTF_8);
- byte[] expectedConversionBytes = expectedConversion.getBytes(UTF_8);
-
- // test using input text and assuming it was declared TEXT
- try (InputStream in = EolStreamTypeUtil.wrapInputStream(
- new ByteArrayInputStream(inputBytes),
- streamTypeText)) {
- byte[] b = new byte[1024];
- int len = IO.readFully(in, b, 0);
- assertArrayEquals(expectedConversionBytes, Arrays.copyOf(b, len));
- }
-
- // test using input text and assuming it was declared AUTO, using binary
- // detection
- try (InputStream in = EolStreamTypeUtil.wrapInputStream(
- new ByteArrayInputStream(inputBytes),
- streamTypeWithBinaryCheck)) {
- byte[] b = new byte[1024];
- int len = IO.readFully(in, b, 0);
- assertArrayEquals(expectedConversionBytes, Arrays.copyOf(b, len));
- }
-
- // now pollute input text with some binary bytes
- inputBytes = extendWithBinaryData(inputBytes);
- expectedConversionBytes = extendWithBinaryData(expectedConversionBytes);
-
- // again, test using input text and assuming it was declared TEXT
- try (InputStream in = EolStreamTypeUtil.wrapInputStream(
- new ByteArrayInputStream(inputBytes), streamTypeText)) {
- byte[] b = new byte[1024];
- int len = IO.readFully(in, b, 0);
- assertArrayEquals(expectedConversionBytes, Arrays.copyOf(b, len));
- }
-
- // again, test using input text and assuming it was declared AUTO, using
- // binary
- // detection
- try (InputStream in = EolStreamTypeUtil.wrapInputStream(
- new ByteArrayInputStream(inputBytes),
- streamTypeWithBinaryCheck)) {
- byte[] b = new byte[1024];
- int len = IO.readFully(in, b, 0);
- // expect no conversion
- assertArrayEquals(inputBytes, Arrays.copyOf(b, len));
- }
- }
-
- private byte[] extendWithBinaryData(byte[] data) throws Exception {
- int n = 3;
- byte[] dataEx = new byte[data.length + n];
- System.arraycopy(data, 0, dataEx, 0, data.length);
- for (int i = 0; i < n; i++) {
- dataEx[data.length + i] = (byte) i;
- }
- return dataEx;
- }
-
- }
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