| /* |
| * Copyright (C) 2009-2010, 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.assertFalse; |
| import static org.junit.Assert.assertNotEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| import org.eclipse.jgit.lib.Constants; |
| import org.junit.Test; |
| |
| public class RawTextIgnoreWhitespaceChangeTest { |
| private final RawTextComparator cmp = RawTextComparator.WS_IGNORE_CHANGE; |
| |
| @Test |
| public void testEqualsWithoutWhitespace() { |
| final RawText a = new RawText(Constants |
| .encodeASCII("foo-a\nfoo-b\nfoo\n")); |
| final RawText b = new RawText(Constants |
| .encodeASCII("foo-b\nfoo-c\nf\n")); |
| |
| assertEquals(3, a.size()); |
| assertEquals(3, b.size()); |
| |
| // foo-a != foo-b |
| assertFalse(cmp.equals(a, 0, b, 0)); |
| assertFalse(cmp.equals(b, 0, a, 0)); |
| |
| // foo-b == foo-b |
| assertTrue(cmp.equals(a, 1, b, 0)); |
| assertTrue(cmp.equals(b, 0, a, 1)); |
| |
| // foo != f |
| assertFalse(cmp.equals(a, 2, b, 2)); |
| assertFalse(cmp.equals(b, 2, a, 2)); |
| } |
| |
| @Test |
| public void testEqualsWithWhitespace() { |
| final RawText a = new RawText(Constants |
| .encodeASCII("foo-a\n \n a b c\na \n foo\na b c\n")); |
| final RawText b = new RawText(Constants |
| .encodeASCII("foo-a b\n\nab c\na\nfoo\na b c \n")); |
| |
| // "foo-a" != "foo-a b" |
| assertFalse(cmp.equals(a, 0, b, 0)); |
| assertFalse(cmp.equals(b, 0, a, 0)); |
| |
| // " " == "" |
| assertTrue(cmp.equals(a, 1, b, 1)); |
| assertTrue(cmp.equals(b, 1, a, 1)); |
| |
| // " a b c" != "ab c" |
| assertFalse(cmp.equals(a, 2, b, 2)); |
| assertFalse(cmp.equals(b, 2, a, 2)); |
| |
| // "a " == "a" |
| assertTrue(cmp.equals(a, 3, b, 3)); |
| assertTrue(cmp.equals(b, 3, a, 3)); |
| |
| // " foo" != "foo" |
| assertFalse(cmp.equals(a, 4, b, 4)); |
| assertFalse(cmp.equals(b, 4, a, 4)); |
| |
| // "a b c" == "a b c " |
| assertTrue(cmp.equals(a, 5, b, 5)); |
| assertTrue(cmp.equals(b, 5, a, 5)); |
| } |
| |
| @Test |
| public void testEqualsWithTabs() { |
| RawText a = new RawText( |
| Constants.encodeASCII("a\tb\t \na\tb\t c \n foo\na b\na b")); |
| RawText b = new RawText( |
| Constants.encodeASCII("a b \na b c\n\tfoo\nab\na \tb")); |
| |
| // "a\tb\t \n" == "a b \n" |
| assertTrue(cmp.equals(a, 0, b, 0)); |
| assertTrue(cmp.equals(b, 0, a, 0)); |
| |
| // "a\tb\t c \n" == "a b c\n" |
| assertTrue(cmp.equals(a, 1, b, 1)); |
| assertTrue(cmp.equals(b, 1, a, 1)); |
| |
| // " foo" == "\tfoo" |
| assertTrue(cmp.equals(a, 2, b, 2)); |
| assertTrue(cmp.equals(b, 2, a, 2)); |
| |
| // "a b" != "ab" |
| assertFalse(cmp.equals(a, 3, b, 3)); |
| assertFalse(cmp.equals(b, 3, a, 3)); |
| |
| // "a b" == "a \tb " |
| assertTrue(cmp.equals(a, 4, b, 4)); |
| assertTrue(cmp.equals(b, 4, a, 4)); |
| } |
| |
| @Test |
| public void testHashCode() { |
| RawText a = new RawText(Constants |
| .encodeASCII("a b c\n\nab c d \n\ta bc d\nxyz\na b c")); |
| RawText b = new RawText(Constants.encodeASCII( |
| "a b c\na b c\nab c d\na bc d\n \t a bc d\na b c\n")); |
| |
| // Same line gives equal hash |
| assertEquals(cmp.hash(a, 0), cmp.hash(a, 0)); |
| |
| // Empty lines produce the same hash |
| assertEquals(cmp.hash(a, 1), cmp.hash(a, 1)); |
| |
| // Equal lines from different RawTexts get the same hash (RawText |
| // instance is not part of the hash) |
| assertEquals(cmp.hash(a, 0), cmp.hash(b, 0)); |
| |
| // A blank produces the same hash as a TAB |
| assertEquals(cmp.hash(new RawText(Constants.encodeASCII(" ")), 0), |
| cmp.hash(new RawText(Constants.encodeASCII("\t")), 0)); |
| |
| // Lines with only differing whitespace produce same hash |
| assertEquals(cmp.hash(a, 0), cmp.hash(b, 1)); |
| |
| // Lines with different trailing whitespace produce the same hash |
| assertEquals(cmp.hash(a, 2), cmp.hash(b, 2)); |
| |
| // A line with leading whitespace produces a hash different from the |
| // same line without leading whitespace |
| assertNotEquals(cmp.hash(a, 3), cmp.hash(b, 3)); |
| |
| // Lines with different leading whitespace produce equal hashes |
| assertEquals(cmp.hash(a, 3), cmp.hash(b, 4)); |
| |
| // While different lines _should_ produce different hashes, that may not |
| // always be the case. But for these two lines, it is. |
| assertNotEquals(cmp.hash(a, 4), cmp.hash(b, 4)); |
| |
| // A line without trailing \n produces the same hash as one without |
| assertEquals(cmp.hash(a, 5), cmp.hash(b, 5)); |
| |
| } |
| } |