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diff_match_patch_test.cpp
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/*
* Diff Match and Patch -- Test Harness
* Copyright 2018 The diff-match-patch Authors.
* https://github.com/google/diff-match-patch
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// Code known to compile and run with Qt 4.3 through Qt 4.7.
#include <QtCore>
#include "diff_match_patch.h"
#include "diff_match_patch_test.h"
int main(int argc, char **argv) {
diff_match_patch_test dmp_test;
qDebug("Starting diff_match_patch unit tests.");
dmp_test.run_all_tests();
qDebug("Done.");
return 0;
Q_UNUSED(argc)
Q_UNUSED(argv)
}
diff_match_patch_test::diff_match_patch_test() {
}
void diff_match_patch_test::run_all_tests() {
QTime t;
t.start();
try {
testDiffCommonPrefix();
testDiffCommonSuffix();
testDiffCommonOverlap();
testDiffHalfmatch();
testDiffLinesToChars();
testDiffCharsToLines();
testDiffCleanupMerge();
testDiffCleanupSemanticLossless();
testDiffCleanupSemantic();
testDiffCleanupEfficiency();
testDiffPrettyHtml();
testDiffText();
testDiffDelta();
testDiffXIndex();
testDiffLevenshtein();
testDiffBisect();
testDiffMain();
testMatchAlphabet();
testMatchBitap();
testMatchMain();
testPatchObj();
testPatchFromText();
testPatchToText();
testPatchAddContext();
testPatchMake();
testPatchSplitMax();
testPatchAddPadding();
testPatchApply();
qDebug("All tests passed.");
} catch (QString strCase) {
qDebug("Test failed: %s", qPrintable(strCase));
}
qDebug("Total time: %d ms", t.elapsed());
}
// DIFF TEST FUNCTIONS
void diff_match_patch_test::testDiffCommonPrefix() {
// Detect any common prefix.
assertEquals("diff_commonPrefix: Null case.", 0, dmp.diff_commonPrefix("abc", "xyz"));
assertEquals("diff_commonPrefix: Non-null case.", 4, dmp.diff_commonPrefix("1234abcdef", "1234xyz"));
assertEquals("diff_commonPrefix: Whole case.", 4, dmp.diff_commonPrefix("1234", "1234xyz"));
}
void diff_match_patch_test::testDiffCommonSuffix() {
// Detect any common suffix.
assertEquals("diff_commonSuffix: Null case.", 0, dmp.diff_commonSuffix("abc", "xyz"));
assertEquals("diff_commonSuffix: Non-null case.", 4, dmp.diff_commonSuffix("abcdef1234", "xyz1234"));
assertEquals("diff_commonSuffix: Whole case.", 4, dmp.diff_commonSuffix("1234", "xyz1234"));
}
void diff_match_patch_test::testDiffCommonOverlap() {
// Detect any suffix/prefix overlap.
assertEquals("diff_commonOverlap: Null case.", 0, dmp.diff_commonOverlap("", "abcd"));
assertEquals("diff_commonOverlap: Whole case.", 3, dmp.diff_commonOverlap("abc", "abcd"));
assertEquals("diff_commonOverlap: No overlap.", 0, dmp.diff_commonOverlap("123456", "abcd"));
assertEquals("diff_commonOverlap: Overlap.", 3, dmp.diff_commonOverlap("123456xxx", "xxxabcd"));
// Some overly clever languages (C#) may treat ligatures as equal to their
// component letters. E.g. U+FB01 == 'fi'
assertEquals("diff_commonOverlap: Unicode.", 0, dmp.diff_commonOverlap("fi", QString::fromWCharArray((const wchar_t*) L"\ufb01i", 2)));
}
void diff_match_patch_test::testDiffHalfmatch() {
// Detect a halfmatch.
dmp.Diff_Timeout = 1;
assertEmpty("diff_halfMatch: No match #1.", dmp.diff_halfMatch("1234567890", "abcdef"));
assertEmpty("diff_halfMatch: No match #2.", dmp.diff_halfMatch("12345", "23"));
assertEquals("diff_halfMatch: Single Match #1.", QString("12,90,a,z,345678").split(","), dmp.diff_halfMatch("1234567890", "a345678z"));
assertEquals("diff_halfMatch: Single Match #2.", QString("a,z,12,90,345678").split(","), dmp.diff_halfMatch("a345678z", "1234567890"));
assertEquals("diff_halfMatch: Single Match #3.", QString("abc,z,1234,0,56789").split(","), dmp.diff_halfMatch("abc56789z", "1234567890"));
assertEquals("diff_halfMatch: Single Match #4.", QString("a,xyz,1,7890,23456").split(","), dmp.diff_halfMatch("a23456xyz", "1234567890"));
assertEquals("diff_halfMatch: Multiple Matches #1.", QString("12123,123121,a,z,1234123451234").split(","), dmp.diff_halfMatch("121231234123451234123121", "a1234123451234z"));
assertEquals("diff_halfMatch: Multiple Matches #2.", QString(",-=-=-=-=-=,x,,x-=-=-=-=-=-=-=").split(","), dmp.diff_halfMatch("x-=-=-=-=-=-=-=-=-=-=-=-=", "xx-=-=-=-=-=-=-="));
assertEquals("diff_halfMatch: Multiple Matches #3.", QString("-=-=-=-=-=,,,y,-=-=-=-=-=-=-=y").split(","), dmp.diff_halfMatch("-=-=-=-=-=-=-=-=-=-=-=-=y", "-=-=-=-=-=-=-=yy"));
// Optimal diff would be -q+x=H-i+e=lloHe+Hu=llo-Hew+y not -qHillo+x=HelloHe-w+Hulloy
assertEquals("diff_halfMatch: Non-optimal halfmatch.", QString("qHillo,w,x,Hulloy,HelloHe").split(","), dmp.diff_halfMatch("qHilloHelloHew", "xHelloHeHulloy"));
dmp.Diff_Timeout = 0;
assertEmpty("diff_halfMatch: Optimal no halfmatch.", dmp.diff_halfMatch("qHilloHelloHew", "xHelloHeHulloy"));
}
void diff_match_patch_test::testDiffLinesToChars() {
// Convert lines down to characters.
QStringList tmpVector;
QList<QVariant> tmpVarList;
tmpVector.append("");
tmpVector.append("alpha\n");
tmpVector.append("beta\n");
tmpVarList << QVariant::fromValue(QString() + QChar((ushort)1) + QChar((ushort)2) + QChar((ushort)1)); //(("\u0001\u0002\u0001"));
tmpVarList << QVariant::fromValue(QString() + QChar((ushort)2) + QChar((ushort)1) + QChar((ushort)2)); // (("\u0002\u0001\u0002"));
tmpVarList << QVariant::fromValue(tmpVector);
assertEquals("diff_linesToChars:", tmpVarList, dmp.diff_linesToChars("alpha\nbeta\nalpha\n", "beta\nalpha\nbeta\n"));
tmpVector.clear();
tmpVarList.clear();
tmpVector.append("");
tmpVector.append("alpha\r\n");
tmpVector.append("beta\r\n");
tmpVector.append("\r\n");
tmpVarList << QVariant::fromValue(QString(""));
tmpVarList << QVariant::fromValue(QString() + QChar((ushort)1) + QChar((ushort)2) + QChar((ushort)3) + QChar((ushort)3)); // (("\u0001\u0002\u0003\u0003"));
tmpVarList << QVariant::fromValue(tmpVector);
assertEquals("diff_linesToChars:", tmpVarList, dmp.diff_linesToChars("", "alpha\r\nbeta\r\n\r\n\r\n"));
tmpVector.clear();
tmpVarList.clear();
tmpVector.append("");
tmpVector.append("a");
tmpVector.append("b");
tmpVarList << QVariant::fromValue(QString() + QChar((ushort)1)); // (("\u0001"));
tmpVarList << QVariant::fromValue(QString() + QChar((ushort)2)); // (("\u0002"));
tmpVarList << QVariant::fromValue(tmpVector);
assertEquals("diff_linesToChars:", tmpVarList, dmp.diff_linesToChars("a", "b"));
// More than 256 to reveal any 8-bit limitations.
int n = 300;
tmpVector.clear();
tmpVarList.clear();
QString lines;
QString chars;
for (int x = 1; x < n + 1; x++) {
tmpVector.append(QString::number(x) + "\n");
lines += QString::number(x) + "\n";
chars += QChar(static_cast<ushort>(x));
}
assertEquals("diff_linesToChars: More than 256 (setup).", n, tmpVector.size());
assertEquals("diff_linesToChars: More than 256 (setup).", n, chars.length());
tmpVector.prepend("");
tmpVarList << QVariant::fromValue(chars);
tmpVarList << QVariant::fromValue(QString(""));
tmpVarList << QVariant::fromValue(tmpVector);
assertEquals("diff_linesToChars: More than 256.", tmpVarList, dmp.diff_linesToChars(lines, ""));
}
void diff_match_patch_test::testDiffCharsToLines() {
// First check that Diff equality works.
assertTrue("diff_charsToLines:", Diff(EQUAL, "a") == Diff(EQUAL, "a"));
assertEquals("diff_charsToLines:", Diff(EQUAL, "a"), Diff(EQUAL, "a"));
// Convert chars up to lines.
QList<Diff> diffs;
diffs << Diff(EQUAL, QString() + QChar((ushort)1) + QChar((ushort)2) + QChar((ushort)1)); // ("\u0001\u0002\u0001");
diffs << Diff(INSERT, QString() + QChar((ushort)2) + QChar((ushort)1) + QChar((ushort)2)); // ("\u0002\u0001\u0002");
QStringList tmpVector;
tmpVector.append("");
tmpVector.append("alpha\n");
tmpVector.append("beta\n");
dmp.diff_charsToLines(diffs, tmpVector);
assertEquals("diff_charsToLines:", diffList(Diff(EQUAL, "alpha\nbeta\nalpha\n"), Diff(INSERT, "beta\nalpha\nbeta\n")), diffs);
// More than 256 to reveal any 8-bit limitations.
int n = 300;
tmpVector.clear();
QList<QVariant> tmpVarList;
QString lines;
QString chars;
for (int x = 1; x < n + 1; x++) {
tmpVector.append(QString::number(x) + "\n");
lines += QString::number(x) + "\n";
chars += QChar(static_cast<ushort>(x));
}
assertEquals("diff_linesToChars: More than 256 (setup).", n, tmpVector.size());
assertEquals("diff_linesToChars: More than 256 (setup).", n, chars.length());
tmpVector.prepend("");
diffs = diffList(Diff(DELETE, chars));
dmp.diff_charsToLines(diffs, tmpVector);
assertEquals("diff_charsToLines: More than 256.", diffList(Diff(DELETE, lines)), diffs);
}
void diff_match_patch_test::testDiffCleanupMerge() {
// Cleanup a messy diff.
QList<Diff> diffs;
dmp.diff_cleanupMerge(diffs);
assertEquals("diff_cleanupMerge: Null case.", diffList(), diffs);
diffs = diffList(Diff(EQUAL, "a"), Diff(DELETE, "b"), Diff(INSERT, "c"));
dmp.diff_cleanupMerge(diffs);
assertEquals("diff_cleanupMerge: No change case.", diffList(Diff(EQUAL, "a"), Diff(DELETE, "b"), Diff(INSERT, "c")), diffs);
diffs = diffList(Diff(EQUAL, "a"), Diff(EQUAL, "b"), Diff(EQUAL, "c"));
dmp.diff_cleanupMerge(diffs);
assertEquals("diff_cleanupMerge: Merge equalities.", diffList(Diff(EQUAL, "abc")), diffs);
diffs = diffList(Diff(DELETE, "a"), Diff(DELETE, "b"), Diff(DELETE, "c"));
dmp.diff_cleanupMerge(diffs);
assertEquals("diff_cleanupMerge: Merge deletions.", diffList(Diff(DELETE, "abc")), diffs);
diffs = diffList(Diff(INSERT, "a"), Diff(INSERT, "b"), Diff(INSERT, "c"));
dmp.diff_cleanupMerge(diffs);
assertEquals("diff_cleanupMerge: Merge insertions.", diffList(Diff(INSERT, "abc")), diffs);
diffs = diffList(Diff(DELETE, "a"), Diff(INSERT, "b"), Diff(DELETE, "c"), Diff(INSERT, "d"), Diff(EQUAL, "e"), Diff(EQUAL, "f"));
dmp.diff_cleanupMerge(diffs);
assertEquals("diff_cleanupMerge: Merge interweave.", diffList(Diff(DELETE, "ac"), Diff(INSERT, "bd"), Diff(EQUAL, "ef")), diffs);
diffs = diffList(Diff(DELETE, "a"), Diff(INSERT, "abc"), Diff(DELETE, "dc"));
dmp.diff_cleanupMerge(diffs);
assertEquals("diff_cleanupMerge: Prefix and suffix detection.", diffList(Diff(EQUAL, "a"), Diff(DELETE, "d"), Diff(INSERT, "b"), Diff(EQUAL, "c")), diffs);
diffs = diffList(Diff(EQUAL, "x"), Diff(DELETE, "a"), Diff(INSERT, "abc"), Diff(DELETE, "dc"), Diff(EQUAL, "y"));
dmp.diff_cleanupMerge(diffs);
assertEquals("diff_cleanupMerge: Prefix and suffix detection with equalities.", diffList(Diff(EQUAL, "xa"), Diff(DELETE, "d"), Diff(INSERT, "b"), Diff(EQUAL, "cy")), diffs);
diffs = diffList(Diff(EQUAL, "a"), Diff(INSERT, "ba"), Diff(EQUAL, "c"));
dmp.diff_cleanupMerge(diffs);
assertEquals("diff_cleanupMerge: Slide edit left.", diffList(Diff(INSERT, "ab"), Diff(EQUAL, "ac")), diffs);
diffs = diffList(Diff(EQUAL, "c"), Diff(INSERT, "ab"), Diff(EQUAL, "a"));
dmp.diff_cleanupMerge(diffs);
assertEquals("diff_cleanupMerge: Slide edit right.", diffList(Diff(EQUAL, "ca"), Diff(INSERT, "ba")), diffs);
diffs = diffList(Diff(EQUAL, "a"), Diff(DELETE, "b"), Diff(EQUAL, "c"), Diff(DELETE, "ac"), Diff(EQUAL, "x"));
dmp.diff_cleanupMerge(diffs);
assertEquals("diff_cleanupMerge: Slide edit left recursive.", diffList(Diff(DELETE, "abc"), Diff(EQUAL, "acx")), diffs);
diffs = diffList(Diff(EQUAL, "x"), Diff(DELETE, "ca"), Diff(EQUAL, "c"), Diff(DELETE, "b"), Diff(EQUAL, "a"));
dmp.diff_cleanupMerge(diffs);
assertEquals("diff_cleanupMerge: Slide edit right recursive.", diffList(Diff(EQUAL, "xca"), Diff(DELETE, "cba")), diffs);
}
void diff_match_patch_test::testDiffCleanupSemanticLossless() {
// Slide diffs to match logical boundaries.
QList<Diff> diffs = diffList();
dmp.diff_cleanupSemanticLossless(diffs);
assertEquals("diff_cleanupSemantic: Null case.", diffList(), diffs);
diffs = diffList(Diff(EQUAL, "AAA\r\n\r\nBBB"), Diff(INSERT, "\r\nDDD\r\n\r\nBBB"), Diff(EQUAL, "\r\nEEE"));
dmp.diff_cleanupSemanticLossless(diffs);
assertEquals("diff_cleanupSemanticLossless: Blank lines.", diffList(Diff(EQUAL, "AAA\r\n\r\n"), Diff(INSERT, "BBB\r\nDDD\r\n\r\n"), Diff(EQUAL, "BBB\r\nEEE")), diffs);
diffs = diffList(Diff(EQUAL, "AAA\r\nBBB"), Diff(INSERT, " DDD\r\nBBB"), Diff(EQUAL, " EEE"));
dmp.diff_cleanupSemanticLossless(diffs);
assertEquals("diff_cleanupSemanticLossless: Line boundaries.", diffList(Diff(EQUAL, "AAA\r\n"), Diff(INSERT, "BBB DDD\r\n"), Diff(EQUAL, "BBB EEE")), diffs);
diffs = diffList(Diff(EQUAL, "The c"), Diff(INSERT, "ow and the c"), Diff(EQUAL, "at."));
dmp.diff_cleanupSemanticLossless(diffs);
assertEquals("diff_cleanupSemantic: Word boundaries.", diffList(Diff(EQUAL, "The "), Diff(INSERT, "cow and the "), Diff(EQUAL, "cat.")), diffs);
diffs = diffList(Diff(EQUAL, "The-c"), Diff(INSERT, "ow-and-the-c"), Diff(EQUAL, "at."));
dmp.diff_cleanupSemanticLossless(diffs);
assertEquals("diff_cleanupSemantic: Alphanumeric boundaries.", diffList(Diff(EQUAL, "The-"), Diff(INSERT, "cow-and-the-"), Diff(EQUAL, "cat.")), diffs);
diffs = diffList(Diff(EQUAL, "a"), Diff(DELETE, "a"), Diff(EQUAL, "ax"));
dmp.diff_cleanupSemanticLossless(diffs);
assertEquals("diff_cleanupSemantic: Hitting the start.", diffList(Diff(DELETE, "a"), Diff(EQUAL, "aax")), diffs);
diffs = diffList(Diff(EQUAL, "xa"), Diff(DELETE, "a"), Diff(EQUAL, "a"));
dmp.diff_cleanupSemanticLossless(diffs);
assertEquals("diff_cleanupSemantic: Hitting the end.", diffList(Diff(EQUAL, "xaa"), Diff(DELETE, "a")), diffs);
diffs = diffList(Diff(EQUAL, "The xxx. The "), Diff(INSERT, "zzz. The "), Diff(EQUAL, "yyy."));
dmp.diff_cleanupSemanticLossless(diffs);
assertEquals("diff_cleanupSemantic: Sentence boundaries.", diffList(Diff(EQUAL, "The xxx."), Diff(INSERT, " The zzz."), Diff(EQUAL, " The yyy.")), diffs);
}
void diff_match_patch_test::testDiffCleanupSemantic() {
// Cleanup semantically trivial equalities.
QList<Diff> diffs = diffList();
dmp.diff_cleanupSemantic(diffs);
assertEquals("diff_cleanupSemantic: Null case.", diffList(), diffs);
diffs = diffList(Diff(DELETE, "ab"), Diff(INSERT, "cd"), Diff(EQUAL, "12"), Diff(DELETE, "e"));
dmp.diff_cleanupSemantic(diffs);
assertEquals("diff_cleanupSemantic: No elimination #1.", diffList(Diff(DELETE, "ab"), Diff(INSERT, "cd"), Diff(EQUAL, "12"), Diff(DELETE, "e")), diffs);
diffs = diffList(Diff(DELETE, "abc"), Diff(INSERT, "ABC"), Diff(EQUAL, "1234"), Diff(DELETE, "wxyz"));
dmp.diff_cleanupSemantic(diffs);
assertEquals("diff_cleanupSemantic: No elimination #2.", diffList(Diff(DELETE, "abc"), Diff(INSERT, "ABC"), Diff(EQUAL, "1234"), Diff(DELETE, "wxyz")), diffs);
diffs = diffList(Diff(DELETE, "a"), Diff(EQUAL, "b"), Diff(DELETE, "c"));
dmp.diff_cleanupSemantic(diffs);
assertEquals("diff_cleanupSemantic: Simple elimination.", diffList(Diff(DELETE, "abc"), Diff(INSERT, "b")), diffs);
diffs = diffList(Diff(DELETE, "ab"), Diff(EQUAL, "cd"), Diff(DELETE, "e"), Diff(EQUAL, "f"), Diff(INSERT, "g"));
dmp.diff_cleanupSemantic(diffs);
assertEquals("diff_cleanupSemantic: Backpass elimination.", diffList(Diff(DELETE, "abcdef"), Diff(INSERT, "cdfg")), diffs);
diffs = diffList(Diff(INSERT, "1"), Diff(EQUAL, "A"), Diff(DELETE, "B"), Diff(INSERT, "2"), Diff(EQUAL, "_"), Diff(INSERT, "1"), Diff(EQUAL, "A"), Diff(DELETE, "B"), Diff(INSERT, "2"));
dmp.diff_cleanupSemantic(diffs);
assertEquals("diff_cleanupSemantic: Multiple elimination.", diffList(Diff(DELETE, "AB_AB"), Diff(INSERT, "1A2_1A2")), diffs);
diffs = diffList(Diff(EQUAL, "The c"), Diff(DELETE, "ow and the c"), Diff(EQUAL, "at."));
dmp.diff_cleanupSemantic(diffs);
assertEquals("diff_cleanupSemantic: Word boundaries.", diffList(Diff(EQUAL, "The "), Diff(DELETE, "cow and the "), Diff(EQUAL, "cat.")), diffs);
diffs = diffList(Diff(DELETE, "abcxx"), Diff(INSERT, "xxdef"));
dmp.diff_cleanupSemantic(diffs);
assertEquals("diff_cleanupSemantic: No overlap elimination.", diffList(Diff(DELETE, "abcxx"), Diff(INSERT, "xxdef")), diffs);
diffs = diffList(Diff(DELETE, "abcxxx"), Diff(INSERT, "xxxdef"));
dmp.diff_cleanupSemantic(diffs);
assertEquals("diff_cleanupSemantic: Overlap elimination.", diffList(Diff(DELETE, "abc"), Diff(EQUAL, "xxx"), Diff(INSERT, "def")), diffs);
diffs = diffList(Diff(DELETE, "xxxabc"), Diff(INSERT, "defxxx"));
dmp.diff_cleanupSemantic(diffs);
assertEquals("diff_cleanupSemantic: Reverse overlap elimination.", diffList(Diff(INSERT, "def"), Diff(EQUAL, "xxx"), Diff(DELETE, "abc")), diffs);
diffs = diffList(Diff(DELETE, "abcd1212"), Diff(INSERT, "1212efghi"), Diff(EQUAL, "----"), Diff(DELETE, "A3"), Diff(INSERT, "3BC"));
dmp.diff_cleanupSemantic(diffs);
assertEquals("diff_cleanupSemantic: Two overlap eliminations.", diffList(Diff(DELETE, "abcd"), Diff(EQUAL, "1212"), Diff(INSERT, "efghi"), Diff(EQUAL, "----"), Diff(DELETE, "A"), Diff(EQUAL, "3"), Diff(INSERT, "BC")), diffs);
}
void diff_match_patch_test::testDiffCleanupEfficiency() {
// Cleanup operationally trivial equalities.
dmp.Diff_EditCost = 4;
QList<Diff> diffs = diffList();
dmp.diff_cleanupEfficiency(diffs);
assertEquals("diff_cleanupEfficiency: Null case.", diffList(), diffs);
diffs = diffList(Diff(DELETE, "ab"), Diff(INSERT, "12"), Diff(EQUAL, "wxyz"), Diff(DELETE, "cd"), Diff(INSERT, "34"));
dmp.diff_cleanupEfficiency(diffs);
assertEquals("diff_cleanupEfficiency: No elimination.", diffList(Diff(DELETE, "ab"), Diff(INSERT, "12"), Diff(EQUAL, "wxyz"), Diff(DELETE, "cd"), Diff(INSERT, "34")), diffs);
diffs = diffList(Diff(DELETE, "ab"), Diff(INSERT, "12"), Diff(EQUAL, "xyz"), Diff(DELETE, "cd"), Diff(INSERT, "34"));
dmp.diff_cleanupEfficiency(diffs);
assertEquals("diff_cleanupEfficiency: Four-edit elimination.", diffList(Diff(DELETE, "abxyzcd"), Diff(INSERT, "12xyz34")), diffs);
diffs = diffList(Diff(INSERT, "12"), Diff(EQUAL, "x"), Diff(DELETE, "cd"), Diff(INSERT, "34"));
dmp.diff_cleanupEfficiency(diffs);
assertEquals("diff_cleanupEfficiency: Three-edit elimination.", diffList(Diff(DELETE, "xcd"), Diff(INSERT, "12x34")), diffs);
diffs = diffList(Diff(DELETE, "ab"), Diff(INSERT, "12"), Diff(EQUAL, "xy"), Diff(INSERT, "34"), Diff(EQUAL, "z"), Diff(DELETE, "cd"), Diff(INSERT, "56"));
dmp.diff_cleanupEfficiency(diffs);
assertEquals("diff_cleanupEfficiency: Backpass elimination.", diffList(Diff(DELETE, "abxyzcd"), Diff(INSERT, "12xy34z56")), diffs);
dmp.Diff_EditCost = 5;
diffs = diffList(Diff(DELETE, "ab"), Diff(INSERT, "12"), Diff(EQUAL, "wxyz"), Diff(DELETE, "cd"), Diff(INSERT, "34"));
dmp.diff_cleanupEfficiency(diffs);
assertEquals("diff_cleanupEfficiency: High cost elimination.", diffList(Diff(DELETE, "abwxyzcd"), Diff(INSERT, "12wxyz34")), diffs);
dmp.Diff_EditCost = 4;
}
void diff_match_patch_test::testDiffPrettyHtml() {
// Pretty print.
QList<Diff> diffs = diffList(Diff(EQUAL, "a\n"), Diff(DELETE, "<B>b</B>"), Diff(INSERT, "c&d"));
assertEquals("diff_prettyHtml:", "<span>a¶<br></span><del style=\"background:#ffe6e6;\"><B>b</B></del><ins style=\"background:#e6ffe6;\">c&d</ins>", dmp.diff_prettyHtml(diffs));
}
void diff_match_patch_test::testDiffText() {
// Compute the source and destination texts.
QList<Diff> diffs = diffList(Diff(EQUAL, "jump"), Diff(DELETE, "s"), Diff(INSERT, "ed"), Diff(EQUAL, " over "), Diff(DELETE, "the"), Diff(INSERT, "a"), Diff(EQUAL, " lazy"));
assertEquals("diff_text1:", "jumps over the lazy", dmp.diff_text1(diffs));
assertEquals("diff_text2:", "jumped over a lazy", dmp.diff_text2(diffs));
}
void diff_match_patch_test::testDiffDelta() {
// Convert a diff into delta string.
QList<Diff> diffs = diffList(Diff(EQUAL, "jump"), Diff(DELETE, "s"), Diff(INSERT, "ed"), Diff(EQUAL, " over "), Diff(DELETE, "the"), Diff(INSERT, "a"), Diff(EQUAL, " lazy"), Diff(INSERT, "old dog"));
QString text1 = dmp.diff_text1(diffs);
assertEquals("diff_text1: Base text.", "jumps over the lazy", text1);
QString delta = dmp.diff_toDelta(diffs);
assertEquals("diff_toDelta:", "=4\t-1\t+ed\t=6\t-3\t+a\t=5\t+old dog", delta);
// Convert delta string into a diff.
assertEquals("diff_fromDelta: Normal.", diffs, dmp.diff_fromDelta(text1, delta));
// Generates error (19 < 20).
try {
dmp.diff_fromDelta(text1 + "x", delta);
assertFalse("diff_fromDelta: Too long.", true);
} catch (QString ex) {
// Exception expected.
}
// Generates error (19 > 18).
try {
dmp.diff_fromDelta(text1.mid(1), delta);
assertFalse("diff_fromDelta: Too short.", true);
} catch (QString ex) {
// Exception expected.
}
// Generates error (%c3%xy invalid Unicode).
/* This test does not work because QUrl::fromPercentEncoding("%xy") -> "?"
try {
dmp.diff_fromDelta("", "+%c3%xy");
assertFalse("diff_fromDelta: Invalid character.", true);
} catch (QString ex) {
// Exception expected.
}
*/
// Test deltas with special characters.
diffs = diffList(Diff(EQUAL, QString::fromWCharArray((const wchar_t*) L"\u0680 \000 \t %", 7)), Diff(DELETE, QString::fromWCharArray((const wchar_t*) L"\u0681 \001 \n ^", 7)), Diff(INSERT, QString::fromWCharArray((const wchar_t*) L"\u0682 \002 \\ |", 7)));
text1 = dmp.diff_text1(diffs);
assertEquals("diff_text1: Unicode text.", QString::fromWCharArray((const wchar_t*) L"\u0680 \000 \t %\u0681 \001 \n ^", 14), text1);
delta = dmp.diff_toDelta(diffs);
assertEquals("diff_toDelta: Unicode.", "=7\t-7\t+%DA%82 %02 %5C %7C", delta);
assertEquals("diff_fromDelta: Unicode.", diffs, dmp.diff_fromDelta(text1, delta));
// Verify pool of unchanged characters.
diffs = diffList(Diff(INSERT, "A-Z a-z 0-9 - _ . ! ~ * ' ( ) ; / ? : @ & = + $ , # "));
QString text2 = dmp.diff_text2(diffs);
assertEquals("diff_text2: Unchanged characters.", "A-Z a-z 0-9 - _ . ! ~ * \' ( ) ; / ? : @ & = + $ , # ", text2);
delta = dmp.diff_toDelta(diffs);
assertEquals("diff_toDelta: Unchanged characters.", "+A-Z a-z 0-9 - _ . ! ~ * \' ( ) ; / ? : @ & = + $ , # ", delta);
// Convert delta string into a diff.
assertEquals("diff_fromDelta: Unchanged characters.", diffs, dmp.diff_fromDelta("", delta));
}
void diff_match_patch_test::testDiffXIndex() {
// Translate a location in text1 to text2.
QList<Diff> diffs = diffList(Diff(DELETE, "a"), Diff(INSERT, "1234"), Diff(EQUAL, "xyz"));
assertEquals("diff_xIndex: Translation on equality.", 5, dmp.diff_xIndex(diffs, 2));
diffs = diffList(Diff(EQUAL, "a"), Diff(DELETE, "1234"), Diff(EQUAL, "xyz"));
assertEquals("diff_xIndex: Translation on deletion.", 1, dmp.diff_xIndex(diffs, 3));
}
void diff_match_patch_test::testDiffLevenshtein() {
QList<Diff> diffs = diffList(Diff(DELETE, "abc"), Diff(INSERT, "1234"), Diff(EQUAL, "xyz"));
assertEquals("diff_levenshtein: Trailing equality.", 4, dmp.diff_levenshtein(diffs));
diffs = diffList(Diff(EQUAL, "xyz"), Diff(DELETE, "abc"), Diff(INSERT, "1234"));
assertEquals("diff_levenshtein: Leading equality.", 4, dmp.diff_levenshtein(diffs));
diffs = diffList(Diff(DELETE, "abc"), Diff(EQUAL, "xyz"), Diff(INSERT, "1234"));
assertEquals("diff_levenshtein: Middle equality.", 7, dmp.diff_levenshtein(diffs));
}
void diff_match_patch_test::testDiffBisect() {
// Normal.
QString a = "cat";
QString b = "map";
// Since the resulting diff hasn't been normalized, it would be ok if
// the insertion and deletion pairs are swapped.
// If the order changes, tweak this test as required.
QList<Diff> diffs = diffList(Diff(DELETE, "c"), Diff(INSERT, "m"), Diff(EQUAL, "a"), Diff(DELETE, "t"), Diff(INSERT, "p"));
assertEquals("diff_bisect: Normal.", diffs, dmp.diff_bisect(a, b, std::numeric_limits<clock_t>::max()));
// Timeout.
diffs = diffList(Diff(DELETE, "cat"), Diff(INSERT, "map"));
assertEquals("diff_bisect: Timeout.", diffs, dmp.diff_bisect(a, b, 0));
}
void diff_match_patch_test::testDiffMain() {
// Perform a trivial diff.
QList<Diff> diffs = diffList();
assertEquals("diff_main: Null case.", diffs, dmp.diff_main("", "", false));
diffs = diffList(Diff(EQUAL, "abc"));
assertEquals("diff_main: Equality.", diffs, dmp.diff_main("abc", "abc", false));
diffs = diffList(Diff(EQUAL, "ab"), Diff(INSERT, "123"), Diff(EQUAL, "c"));
assertEquals("diff_main: Simple insertion.", diffs, dmp.diff_main("abc", "ab123c", false));
diffs = diffList(Diff(EQUAL, "a"), Diff(DELETE, "123"), Diff(EQUAL, "bc"));
assertEquals("diff_main: Simple deletion.", diffs, dmp.diff_main("a123bc", "abc", false));
diffs = diffList(Diff(EQUAL, "a"), Diff(INSERT, "123"), Diff(EQUAL, "b"), Diff(INSERT, "456"), Diff(EQUAL, "c"));
assertEquals("diff_main: Two insertions.", diffs, dmp.diff_main("abc", "a123b456c", false));
diffs = diffList(Diff(EQUAL, "a"), Diff(DELETE, "123"), Diff(EQUAL, "b"), Diff(DELETE, "456"), Diff(EQUAL, "c"));
assertEquals("diff_main: Two deletions.", diffs, dmp.diff_main("a123b456c", "abc", false));
// Perform a real diff.
// Switch off the timeout.
dmp.Diff_Timeout = 0;
diffs = diffList(Diff(DELETE, "a"), Diff(INSERT, "b"));
assertEquals("diff_main: Simple case #1.", diffs, dmp.diff_main("a", "b", false));
diffs = diffList(Diff(DELETE, "Apple"), Diff(INSERT, "Banana"), Diff(EQUAL, "s are a"), Diff(INSERT, "lso"), Diff(EQUAL, " fruit."));
assertEquals("diff_main: Simple case #2.", diffs, dmp.diff_main("Apples are a fruit.", "Bananas are also fruit.", false));
diffs = diffList(Diff(DELETE, "a"), Diff(INSERT, QString::fromWCharArray((const wchar_t*) L"\u0680", 1)), Diff(EQUAL, "x"), Diff(DELETE, "\t"), Diff(INSERT, QString::fromWCharArray((const wchar_t*) L"\000", 1)));
assertEquals("diff_main: Simple case #3.", diffs, dmp.diff_main("ax\t", QString::fromWCharArray((const wchar_t*) L"\u0680x\000", 3), false));
diffs = diffList(Diff(DELETE, "1"), Diff(EQUAL, "a"), Diff(DELETE, "y"), Diff(EQUAL, "b"), Diff(DELETE, "2"), Diff(INSERT, "xab"));
assertEquals("diff_main: Overlap #1.", diffs, dmp.diff_main("1ayb2", "abxab", false));
diffs = diffList(Diff(INSERT, "xaxcx"), Diff(EQUAL, "abc"), Diff(DELETE, "y"));
assertEquals("diff_main: Overlap #2.", diffs, dmp.diff_main("abcy", "xaxcxabc", false));
diffs = diffList(Diff(DELETE, "ABCD"), Diff(EQUAL, "a"), Diff(DELETE, "="), Diff(INSERT, "-"), Diff(EQUAL, "bcd"), Diff(DELETE, "="), Diff(INSERT, "-"), Diff(EQUAL, "efghijklmnopqrs"), Diff(DELETE, "EFGHIJKLMNOefg"));
assertEquals("diff_main: Overlap #3.", diffs, dmp.diff_main("ABCDa=bcd=efghijklmnopqrsEFGHIJKLMNOefg", "a-bcd-efghijklmnopqrs", false));
diffs = diffList(Diff(INSERT, " "), Diff(EQUAL, "a"), Diff(INSERT, "nd"), Diff(EQUAL, " [[Pennsylvania]]"), Diff(DELETE, " and [[New"));
assertEquals("diff_main: Large equality.", diffs, dmp.diff_main("a [[Pennsylvania]] and [[New", " and [[Pennsylvania]]", false));
dmp.Diff_Timeout = 0.1f; // 100ms
// This test may 'fail' on extremely fast computers. If so, just increase the text lengths.
QString a = "`Twas brillig, and the slithy toves\nDid gyre and gimble in the wabe:\nAll mimsy were the borogoves,\nAnd the mome raths outgrabe.\n";
QString b = "I am the very model of a modern major general,\nI've information vegetable, animal, and mineral,\nI know the kings of England, and I quote the fights historical,\nFrom Marathon to Waterloo, in order categorical.\n";
// Increase the text lengths by 1024 times to ensure a timeout.
for (int x = 0; x < 10; x++) {
a = a + a;
b = b + b;
}
clock_t startTime = clock();
dmp.diff_main(a, b);
clock_t endTime = clock();
// Test that we took at least the timeout period.
assertTrue("diff_main: Timeout min.", dmp.Diff_Timeout * CLOCKS_PER_SEC <= endTime - startTime);
// Test that we didn't take forever (be forgiving).
// Theoretically this test could fail very occasionally if the
// OS task swaps or locks up for a second at the wrong moment.
// Java seems to overrun by ~80% (compared with 10% for other languages).
// Therefore use an upper limit of 0.5s instead of 0.2s.
assertTrue("diff_main: Timeout max.", dmp.Diff_Timeout * CLOCKS_PER_SEC * 2 > endTime - startTime);
dmp.Diff_Timeout = 0;
// Test the linemode speedup.
// Must be long to pass the 100 char cutoff.
a = "1234567890\n1234567890\n1234567890\n1234567890\n1234567890\n1234567890\n1234567890\n1234567890\n1234567890\n1234567890\n1234567890\n1234567890\n1234567890\n";
b = "abcdefghij\nabcdefghij\nabcdefghij\nabcdefghij\nabcdefghij\nabcdefghij\nabcdefghij\nabcdefghij\nabcdefghij\nabcdefghij\nabcdefghij\nabcdefghij\nabcdefghij\n";
assertEquals("diff_main: Simple line-mode.", dmp.diff_main(a, b, true), dmp.diff_main(a, b, false));
a = "1234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890";
b = "abcdefghijabcdefghijabcdefghijabcdefghijabcdefghijabcdefghijabcdefghijabcdefghijabcdefghijabcdefghijabcdefghijabcdefghijabcdefghij";
assertEquals("diff_main: Single line-mode.", dmp.diff_main(a, b, true), dmp.diff_main(a, b, false));
a = "1234567890\n1234567890\n1234567890\n1234567890\n1234567890\n1234567890\n1234567890\n1234567890\n1234567890\n1234567890\n1234567890\n1234567890\n1234567890\n";
b = "abcdefghij\n1234567890\n1234567890\n1234567890\nabcdefghij\n1234567890\n1234567890\n1234567890\nabcdefghij\n1234567890\n1234567890\n1234567890\nabcdefghij\n";
QStringList texts_linemode = diff_rebuildtexts(dmp.diff_main(a, b, true));
QStringList texts_textmode = diff_rebuildtexts(dmp.diff_main(a, b, false));
assertEquals("diff_main: Overlap line-mode.", texts_textmode, texts_linemode);
// Test null inputs.
try {
dmp.diff_main(NULL, NULL);
assertFalse("diff_main: Null inputs.", true);
} catch (const char* ex) {
// Exception expected.
}
}
// MATCH TEST FUNCTIONS
void diff_match_patch_test::testMatchAlphabet() {
// Initialise the bitmasks for Bitap.
QMap<QChar, int> bitmask;
bitmask.insert('a', 4);
bitmask.insert('b', 2);
bitmask.insert('c', 1);
assertEquals("match_alphabet: Unique.", bitmask, dmp.match_alphabet("abc"));
bitmask = QMap<QChar, int>();
bitmask.insert('a', 37);
bitmask.insert('b', 18);
bitmask.insert('c', 8);
assertEquals("match_alphabet: Duplicates.", bitmask, dmp.match_alphabet("abcaba"));
}
void diff_match_patch_test::testMatchBitap() {
// Bitap algorithm.
dmp.Match_Distance = 100;
dmp.Match_Threshold = 0.5f;
assertEquals("match_bitap: Exact match #1.", 5, dmp.match_bitap("abcdefghijk", "fgh", 5));
assertEquals("match_bitap: Exact match #2.", 5, dmp.match_bitap("abcdefghijk", "fgh", 0));
assertEquals("match_bitap: Fuzzy match #1.", 4, dmp.match_bitap("abcdefghijk", "efxhi", 0));
assertEquals("match_bitap: Fuzzy match #2.", 2, dmp.match_bitap("abcdefghijk", "cdefxyhijk", 5));
assertEquals("match_bitap: Fuzzy match #3.", -1, dmp.match_bitap("abcdefghijk", "bxy", 1));
assertEquals("match_bitap: Overflow.", 2, dmp.match_bitap("123456789xx0", "3456789x0", 2));
assertEquals("match_bitap: Before start match.", 0, dmp.match_bitap("abcdef", "xxabc", 4));
assertEquals("match_bitap: Beyond end match.", 3, dmp.match_bitap("abcdef", "defyy", 4));
assertEquals("match_bitap: Oversized pattern.", 0, dmp.match_bitap("abcdef", "xabcdefy", 0));
dmp.Match_Threshold = 0.4f;
assertEquals("match_bitap: Threshold #1.", 4, dmp.match_bitap("abcdefghijk", "efxyhi", 1));
dmp.Match_Threshold = 0.3f;
assertEquals("match_bitap: Threshold #2.", -1, dmp.match_bitap("abcdefghijk", "efxyhi", 1));
dmp.Match_Threshold = 0.0f;
assertEquals("match_bitap: Threshold #3.", 1, dmp.match_bitap("abcdefghijk", "bcdef", 1));
dmp.Match_Threshold = 0.5f;
assertEquals("match_bitap: Multiple select #1.", 0, dmp.match_bitap("abcdexyzabcde", "abccde", 3));
assertEquals("match_bitap: Multiple select #2.", 8, dmp.match_bitap("abcdexyzabcde", "abccde", 5));
dmp.Match_Distance = 10; // Strict location.
assertEquals("match_bitap: Distance test #1.", -1, dmp.match_bitap("abcdefghijklmnopqrstuvwxyz", "abcdefg", 24));
assertEquals("match_bitap: Distance test #2.", 0, dmp.match_bitap("abcdefghijklmnopqrstuvwxyz", "abcdxxefg", 1));
dmp.Match_Distance = 1000; // Loose location.
assertEquals("match_bitap: Distance test #3.", 0, dmp.match_bitap("abcdefghijklmnopqrstuvwxyz", "abcdefg", 24));
}
void diff_match_patch_test::testMatchMain() {
// Full match.
assertEquals("match_main: Equality.", 0, dmp.match_main("abcdef", "abcdef", 1000));
assertEquals("match_main: Null text.", -1, dmp.match_main("", "abcdef", 1));
assertEquals("match_main: Null pattern.", 3, dmp.match_main("abcdef", "", 3));
assertEquals("match_main: Exact match.", 3, dmp.match_main("abcdef", "de", 3));
dmp.Match_Threshold = 0.7f;
assertEquals("match_main: Complex match.", 4, dmp.match_main("I am the very model of a modern major general.", " that berry ", 5));
dmp.Match_Threshold = 0.5f;
// Test null inputs.
try {
dmp.match_main(NULL, NULL, 0);
assertFalse("match_main: Null inputs.", true);
} catch (const char* ex) {
// Exception expected.
}
}
// PATCH TEST FUNCTIONS
void diff_match_patch_test::testPatchObj() {
// Patch Object.
Patch p;
p.start1 = 20;
p.start2 = 21;
p.length1 = 18;
p.length2 = 17;
p.diffs = diffList(Diff(EQUAL, "jump"), Diff(DELETE, "s"), Diff(INSERT, "ed"), Diff(EQUAL, " over "), Diff(DELETE, "the"), Diff(INSERT, "a"), Diff(EQUAL, "\nlaz"));
QString strp = "@@ -21,18 +22,17 @@\n jump\n-s\n+ed\n over \n-the\n+a\n %0Alaz\n";
assertEquals("Patch: toString.", strp, p.toString());
}
void diff_match_patch_test::testPatchFromText() {
assertTrue("patch_fromText: #0.", dmp.patch_fromText("").isEmpty());
QString strp = "@@ -21,18 +22,17 @@\n jump\n-s\n+ed\n over \n-the\n+a\n %0Alaz\n";
assertEquals("patch_fromText: #1.", strp, dmp.patch_fromText(strp).value(0).toString());
assertEquals("patch_fromText: #2.", "@@ -1 +1 @@\n-a\n+b\n", dmp.patch_fromText("@@ -1 +1 @@\n-a\n+b\n").value(0).toString());
assertEquals("patch_fromText: #3.", "@@ -1,3 +0,0 @@\n-abc\n", dmp.patch_fromText("@@ -1,3 +0,0 @@\n-abc\n").value(0).toString());
assertEquals("patch_fromText: #4.", "@@ -0,0 +1,3 @@\n+abc\n", dmp.patch_fromText("@@ -0,0 +1,3 @@\n+abc\n").value(0).toString());
// Generates error.
try {
dmp.patch_fromText("Bad\nPatch\n");
assertFalse("patch_fromText: #5.", true);
} catch (QString ex) {
// Exception expected.
}
}
void diff_match_patch_test::testPatchToText() {
QString strp = "@@ -21,18 +22,17 @@\n jump\n-s\n+ed\n over \n-the\n+a\n laz\n";
QList<Patch> patches;
patches = dmp.patch_fromText(strp);
assertEquals("patch_toText: Single", strp, dmp.patch_toText(patches));
strp = "@@ -1,9 +1,9 @@\n-f\n+F\n oo+fooba\n@@ -7,9 +7,9 @@\n obar\n-,\n+.\n tes\n";
patches = dmp.patch_fromText(strp);
assertEquals("patch_toText: Dual", strp, dmp.patch_toText(patches));
}
void diff_match_patch_test::testPatchAddContext() {
dmp.Patch_Margin = 4;
Patch p;
p = dmp.patch_fromText("@@ -21,4 +21,10 @@\n-jump\n+somersault\n").value(0);
dmp.patch_addContext(p, "The quick brown fox jumps over the lazy dog.");
assertEquals("patch_addContext: Simple case.", "@@ -17,12 +17,18 @@\n fox \n-jump\n+somersault\n s ov\n", p.toString());
p = dmp.patch_fromText("@@ -21,4 +21,10 @@\n-jump\n+somersault\n").value(0);
dmp.patch_addContext(p, "The quick brown fox jumps.");
assertEquals("patch_addContext: Not enough trailing context.", "@@ -17,10 +17,16 @@\n fox \n-jump\n+somersault\n s.\n", p.toString());
p = dmp.patch_fromText("@@ -3 +3,2 @@\n-e\n+at\n").value(0);
dmp.patch_addContext(p, "The quick brown fox jumps.");
assertEquals("patch_addContext: Not enough leading context.", "@@ -1,7 +1,8 @@\n Th\n-e\n+at\n qui\n", p.toString());
p = dmp.patch_fromText("@@ -3 +3,2 @@\n-e\n+at\n").value(0);
dmp.patch_addContext(p, "The quick brown fox jumps. The quick brown fox crashes.");
assertEquals("patch_addContext: Ambiguity.", "@@ -1,27 +1,28 @@\n Th\n-e\n+at\n quick brown fox jumps. \n", p.toString());
}
void diff_match_patch_test::testPatchMake() {
QList<Patch> patches;
patches = dmp.patch_make("", "");
assertEquals("patch_make: Null case", "", dmp.patch_toText(patches));
QString text1 = "The quick brown fox jumps over the lazy dog.";
QString text2 = "That quick brown fox jumped over a lazy dog.";
QString expectedPatch = "@@ -1,8 +1,7 @@\n Th\n-at\n+e\n qui\n@@ -21,17 +21,18 @@\n jump\n-ed\n+s\n over \n-a\n+the\n laz\n";
// The second patch must be "-21,17 +21,18", not "-22,17 +21,18" due to rolling context.
patches = dmp.patch_make(text2, text1);
assertEquals("patch_make: Text2+Text1 inputs", expectedPatch, dmp.patch_toText(patches));
expectedPatch = "@@ -1,11 +1,12 @@\n Th\n-e\n+at\n quick b\n@@ -22,18 +22,17 @@\n jump\n-s\n+ed\n over \n-the\n+a\n laz\n";
patches = dmp.patch_make(text1, text2);
assertEquals("patch_make: Text1+Text2 inputs", expectedPatch, dmp.patch_toText(patches));
QList<Diff> diffs = dmp.diff_main(text1, text2, false);
patches = dmp.patch_make(diffs);
assertEquals("patch_make: Diff input", expectedPatch, dmp.patch_toText(patches));
patches = dmp.patch_make(text1, diffs);
assertEquals("patch_make: Text1+Diff inputs", expectedPatch, dmp.patch_toText(patches));
patches = dmp.patch_make(text1, text2, diffs);
assertEquals("patch_make: Text1+Text2+Diff inputs (deprecated)", expectedPatch, dmp.patch_toText(patches));
patches = dmp.patch_make("`1234567890-=[]\\;',./", "~!@#$%^&*()_+{}|:\"<>?");
assertEquals("patch_toText: Character encoding.", "@@ -1,21 +1,21 @@\n-%601234567890-=%5B%5D%5C;',./\n+~!@#$%25%5E&*()_+%7B%7D%7C:%22%3C%3E?\n", dmp.patch_toText(patches));
diffs = diffList(Diff(DELETE, "`1234567890-=[]\\;',./"), Diff(INSERT, "~!@#$%^&*()_+{}|:\"<>?"));
assertEquals("patch_fromText: Character decoding.", diffs, dmp.patch_fromText("@@ -1,21 +1,21 @@\n-%601234567890-=%5B%5D%5C;',./\n+~!@#$%25%5E&*()_+%7B%7D%7C:%22%3C%3E?\n").value(0).diffs);
text1 = "";
for (int x = 0; x < 100; x++) {
text1 += "abcdef";
}
text2 = text1 + "123";
expectedPatch = "@@ -573,28 +573,31 @@\n cdefabcdefabcdefabcdefabcdef\n+123\n";
patches = dmp.patch_make(text1, text2);
assertEquals("patch_make: Long string with repeats.", expectedPatch, dmp.patch_toText(patches));
// Test null inputs.
try {
dmp.patch_make(NULL, NULL);
assertFalse("patch_make: Null inputs.", true);
} catch (const char* ex) {
// Exception expected.
}
}
void diff_match_patch_test::testPatchSplitMax() {
// Assumes that Match_MaxBits is 32.
QList<Patch> patches;
patches = dmp.patch_make("abcdefghijklmnopqrstuvwxyz01234567890", "XabXcdXefXghXijXklXmnXopXqrXstXuvXwxXyzX01X23X45X67X89X0");
dmp.patch_splitMax(patches);
assertEquals("patch_splitMax: #1.", "@@ -1,32 +1,46 @@\n+X\n ab\n+X\n cd\n+X\n ef\n+X\n gh\n+X\n ij\n+X\n kl\n+X\n mn\n+X\n op\n+X\n qr\n+X\n st\n+X\n uv\n+X\n wx\n+X\n yz\n+X\n 012345\n@@ -25,13 +39,18 @@\n zX01\n+X\n 23\n+X\n 45\n+X\n 67\n+X\n 89\n+X\n 0\n", dmp.patch_toText(patches));
patches = dmp.patch_make("abcdef1234567890123456789012345678901234567890123456789012345678901234567890uvwxyz", "abcdefuvwxyz");
QString oldToText = dmp.patch_toText(patches);
dmp.patch_splitMax(patches);
assertEquals("patch_splitMax: #2.", oldToText, dmp.patch_toText(patches));
patches = dmp.patch_make("1234567890123456789012345678901234567890123456789012345678901234567890", "abc");
dmp.patch_splitMax(patches);
assertEquals("patch_splitMax: #3.", "@@ -1,32 +1,4 @@\n-1234567890123456789012345678\n 9012\n@@ -29,32 +1,4 @@\n-9012345678901234567890123456\n 7890\n@@ -57,14 +1,3 @@\n-78901234567890\n+abc\n", dmp.patch_toText(patches));
patches = dmp.patch_make("abcdefghij , h : 0 , t : 1 abcdefghij , h : 0 , t : 1 abcdefghij , h : 0 , t : 1", "abcdefghij , h : 1 , t : 1 abcdefghij , h : 1 , t : 1 abcdefghij , h : 0 , t : 1");
dmp.patch_splitMax(patches);
assertEquals("patch_splitMax: #4.", "@@ -2,32 +2,32 @@\n bcdefghij , h : \n-0\n+1\n , t : 1 abcdef\n@@ -29,32 +29,32 @@\n bcdefghij , h : \n-0\n+1\n , t : 1 abcdef\n", dmp.patch_toText(patches));
}
void diff_match_patch_test::testPatchAddPadding() {
QList<Patch> patches;
patches = dmp.patch_make("", "test");
assertEquals("patch_addPadding: Both edges full.", "@@ -0,0 +1,4 @@\n+test\n", dmp.patch_toText(patches));
dmp.patch_addPadding(patches);
assertEquals("patch_addPadding: Both edges full.", "@@ -1,8 +1,12 @@\n %01%02%03%04\n+test\n %01%02%03%04\n", dmp.patch_toText(patches));
patches = dmp.patch_make("XY", "XtestY");
assertEquals("patch_addPadding: Both edges partial.", "@@ -1,2 +1,6 @@\n X\n+test\n Y\n", dmp.patch_toText(patches));
dmp.patch_addPadding(patches);
assertEquals("patch_addPadding: Both edges partial.", "@@ -2,8 +2,12 @@\n %02%03%04X\n+test\n Y%01%02%03\n", dmp.patch_toText(patches));
patches = dmp.patch_make("XXXXYYYY", "XXXXtestYYYY");
assertEquals("patch_addPadding: Both edges none.", "@@ -1,8 +1,12 @@\n XXXX\n+test\n YYYY\n", dmp.patch_toText(patches));
dmp.patch_addPadding(patches);
assertEquals("patch_addPadding: Both edges none.", "@@ -5,8 +5,12 @@\n XXXX\n+test\n YYYY\n", dmp.patch_toText(patches));
}
void diff_match_patch_test::testPatchApply() {
dmp.Match_Distance = 1000;
dmp.Match_Threshold = 0.5f;
dmp.Patch_DeleteThreshold = 0.5f;
QList<Patch> patches;
patches = dmp.patch_make("", "");
QPair<QString, QVector<bool> > results = dmp.patch_apply(patches, "Hello world.");
QVector<bool> boolArray = results.second;
QString resultStr = QString("%1\t%2").arg(results.first).arg(boolArray.count());
assertEquals("patch_apply: Null case.", "Hello world.\t0", resultStr);
patches = dmp.patch_make("The quick brown fox jumps over the lazy dog.", "That quick brown fox jumped over a lazy dog.");
results = dmp.patch_apply(patches, "The quick brown fox jumps over the lazy dog.");
boolArray = results.second;
resultStr = results.first + "\t" + (boolArray[0] ? "true" : "false") + "\t" + (boolArray[1] ? "true" : "false");
assertEquals("patch_apply: Exact match.", "That quick brown fox jumped over a lazy dog.\ttrue\ttrue", resultStr);
results = dmp.patch_apply(patches, "The quick red rabbit jumps over the tired tiger.");
boolArray = results.second;
resultStr = results.first + "\t" + (boolArray[0] ? "true" : "false") + "\t" + (boolArray[1] ? "true" : "false");
assertEquals("patch_apply: Partial match.", "That quick red rabbit jumped over a tired tiger.\ttrue\ttrue", resultStr);
results = dmp.patch_apply(patches, "I am the very model of a modern major general.");
boolArray = results.second;
resultStr = results.first + "\t" + (boolArray[0] ? "true" : "false") + "\t" + (boolArray[1] ? "true" : "false");
assertEquals("patch_apply: Failed match.", "I am the very model of a modern major general.\tfalse\tfalse", resultStr);
patches = dmp.patch_make("x1234567890123456789012345678901234567890123456789012345678901234567890y", "xabcy");
results = dmp.patch_apply(patches, "x123456789012345678901234567890-----++++++++++-----123456789012345678901234567890y");
boolArray = results.second;
resultStr = results.first + "\t" + (boolArray[0] ? "true" : "false") + "\t" + (boolArray[1] ? "true" : "false");
assertEquals("patch_apply: Big delete, small change.", "xabcy\ttrue\ttrue", resultStr);
patches = dmp.patch_make("x1234567890123456789012345678901234567890123456789012345678901234567890y", "xabcy");
results = dmp.patch_apply(patches, "x12345678901234567890---------------++++++++++---------------12345678901234567890y");
boolArray = results.second;
resultStr = results.first + "\t" + (boolArray[0] ? "true" : "false") + "\t" + (boolArray[1] ? "true" : "false");
assertEquals("patch_apply: Big delete, large change 1.", "xabc12345678901234567890---------------++++++++++---------------12345678901234567890y\tfalse\ttrue", resultStr);
dmp.Patch_DeleteThreshold = 0.6f;
patches = dmp.patch_make("x1234567890123456789012345678901234567890123456789012345678901234567890y", "xabcy");
results = dmp.patch_apply(patches, "x12345678901234567890---------------++++++++++---------------12345678901234567890y");
boolArray = results.second;
resultStr = results.first + "\t" + (boolArray[0] ? "true" : "false") + "\t" + (boolArray[1] ? "true" : "false");
assertEquals("patch_apply: Big delete, large change 2.", "xabcy\ttrue\ttrue", resultStr);
dmp.Patch_DeleteThreshold = 0.5f;
dmp.Match_Threshold = 0.0f;
dmp.Match_Distance = 0;
patches = dmp.patch_make("abcdefghijklmnopqrstuvwxyz--------------------1234567890", "abcXXXXXXXXXXdefghijklmnopqrstuvwxyz--------------------1234567YYYYYYYYYY890");
results = dmp.patch_apply(patches, "ABCDEFGHIJKLMNOPQRSTUVWXYZ--------------------1234567890");
boolArray = results.second;
resultStr = results.first + "\t" + (boolArray[0] ? "true" : "false") + "\t" + (boolArray[1] ? "true" : "false");
assertEquals("patch_apply: Compensate for failed patch.", "ABCDEFGHIJKLMNOPQRSTUVWXYZ--------------------1234567YYYYYYYYYY890\tfalse\ttrue", resultStr);
dmp.Match_Threshold = 0.5f;
dmp.Match_Distance = 1000;
patches = dmp.patch_make("", "test");
QString patchStr = dmp.patch_toText(patches);
dmp.patch_apply(patches, "");
assertEquals("patch_apply: No side effects.", patchStr, dmp.patch_toText(patches));
patches = dmp.patch_make("The quick brown fox jumps over the lazy dog.", "Woof");
patchStr = dmp.patch_toText(patches);
dmp.patch_apply(patches, "The quick brown fox jumps over the lazy dog.");
assertEquals("patch_apply: No side effects with major delete.", patchStr, dmp.patch_toText(patches));
patches = dmp.patch_make("", "test");
results = dmp.patch_apply(patches, "");
boolArray = results.second;
resultStr = results.first + "\t" + (boolArray[0] ? "true" : "false");
assertEquals("patch_apply: Edge exact match.", "test\ttrue", resultStr);
patches = dmp.patch_make("XY", "XtestY");
results = dmp.patch_apply(patches, "XY");
boolArray = results.second;
resultStr = results.first + "\t" + (boolArray[0] ? "true" : "false");
assertEquals("patch_apply: Near edge exact match.", "XtestY\ttrue", resultStr);
patches = dmp.patch_make("y", "y123");
results = dmp.patch_apply(patches, "x");
boolArray = results.second;
resultStr = results.first + "\t" + (boolArray[0] ? "true" : "false");
assertEquals("patch_apply: Edge partial match.", "x123\ttrue", resultStr);
}
void diff_match_patch_test::assertEquals(const QString &strCase, int n1, int n2) {
if (n1 != n2) {
qDebug("%s FAIL\nExpected: %d\nActual: %d", qPrintable(strCase), n1, n2);
throw strCase;
}
qDebug("%s OK", qPrintable(strCase));
}
void diff_match_patch_test::assertEquals(const QString &strCase, const QString &s1, const QString &s2) {
if (s1 != s2) {
qDebug("%s FAIL\nExpected: %s\nActual: %s",
qPrintable(strCase), qPrintable(s1), qPrintable(s2));
throw strCase;
}
qDebug("%s OK", qPrintable(strCase));
}
void diff_match_patch_test::assertEquals(const QString &strCase, const Diff &d1, const Diff &d2) {
if (d1 != d2) {
qDebug("%s FAIL\nExpected: %s\nActual: %s", qPrintable(strCase),
qPrintable(d1.toString()), qPrintable(d2.toString()));
throw strCase;
}
qDebug("%s OK", qPrintable(strCase));
}
void diff_match_patch_test::assertEquals(const QString &strCase, const QList<Diff> &list1, const QList<Diff> &list2) {
bool fail = false;
if (list1.count() == list2.count()) {
int i = 0;
foreach(Diff d1, list1) {
Diff d2 = list2.value(i);
if (d1 != d2) {
fail = true;
break;
}
i++;
}
} else {
fail = true;
}
if (fail) {
// Build human readable description of both lists.
QString listString1 = "(";
bool first = true;
foreach(Diff d1, list1) {
if (!first) {
listString1 += ", ";
}
listString1 += d1.toString();
first = false;
}
listString1 += ")";
QString listString2 = "(";
first = true;
foreach(Diff d2, list2) {
if (!first) {
listString2 += ", ";
}
listString2 += d2.toString();
first = false;
}
listString2 += ")";
qDebug("%s FAIL\nExpected: %s\nActual: %s",
qPrintable(strCase), qPrintable(listString1), qPrintable(listString2));
throw strCase;
}
qDebug("%s OK", qPrintable(strCase));
}
void diff_match_patch_test::assertEquals(const QString &strCase, const QList<QVariant> &list1, const QList<QVariant> &list2) {
bool fail = false;
if (list1.count() == list2.count()) {
int i = 0;
foreach(QVariant q1, list1) {