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#include "diff.h"
#include <library/cpp/testing/unittest/registar.h>
using namespace NDiff;
struct TDiffTester {
TStringStream Res;
TVector<TChunk<char>> Chunks;
TStringBuf Special(const TStringBuf& str) const {
return str;
}
TStringBuf Common(const TConstArrayRef<const char>& str) const {
return TStringBuf(str.begin(), str.end());
}
TStringBuf Left(const TConstArrayRef<const char>& str) const {
return TStringBuf(str.begin(), str.end());
}
TStringBuf Right(const TConstArrayRef<const char>& str) const {
return TStringBuf(str.begin(), str.end());
}
void Test(const TStringBuf& a, const TStringBuf& b, const TString& delims = " \t\n") {
Chunks.clear();
InlineDiff(Chunks, a, b, delims);
Res.clear();
PrintChunks(Res, *this, Chunks);
}
const TString& Result() const {
return Res.Str();
}
};
Y_UNIT_TEST_SUITE(DiffTokens) {
Y_UNIT_TEST(ReturnValue) {
TVector<TChunk<char>> res;
UNIT_ASSERT_VALUES_EQUAL(InlineDiff(res, "aaa", "aaa"), 0);
UNIT_ASSERT_VALUES_EQUAL(InlineDiff(res, "aaa", "aa"), 1);
UNIT_ASSERT_VALUES_EQUAL(InlineDiff(res, "aaa", "a"), 2);
UNIT_ASSERT_VALUES_EQUAL(InlineDiff(res, "aaa", "abc"), 2);
UNIT_ASSERT_VALUES_EQUAL(InlineDiff(res, "aaa", "aba"), 1);
UNIT_ASSERT_VALUES_EQUAL(InlineDiff(res, "", "aba"), 3);
UNIT_ASSERT_VALUES_EQUAL(InlineDiff(res, "aaa", "aaaa"), 1);
UNIT_ASSERT_VALUES_EQUAL(InlineDiff(res, "abc", "xyz"), 3);
}
Y_UNIT_TEST(EqualStringsOneToken) {
TDiffTester tester;
tester.Test("aaa", "aaa");
//~ Cerr << tester.Result() << Endl;
UNIT_ASSERT_VALUES_EQUAL(tester.Result(), "aaa");
}
Y_UNIT_TEST(NonCrossingStringsOneToken) {
TDiffTester tester;
tester.Test("aaa", "bbb");
//~ Cerr << tester.Result() << Endl;
UNIT_ASSERT_VALUES_EQUAL(tester.Result(), "(aaa|bbb)");
tester.Test("aaa", "bbbb");
//~ Cerr << tester.Result() << Endl;
UNIT_ASSERT_VALUES_EQUAL(tester.Result(), "(aaa|bbbb)");
}
Y_UNIT_TEST(Simple) {
TDiffTester tester;
tester.Test("aaa", "abb", "");
//~ Cerr << tester.Result() << Endl;
UNIT_ASSERT_VALUES_EQUAL(tester.Result(), "a(aa|bb)");
tester.Test("aac", "abc", "");
//~ Cerr << tester.Result() << Endl;
UNIT_ASSERT_VALUES_EQUAL(tester.Result(), "a(a|b)c");
tester.Test("123", "133", "");
//~ Cerr << tester.Result() << Endl;
UNIT_ASSERT_VALUES_EQUAL(tester.Result(), "1(2|3)3");
tester.Test("[1, 2, 3]", "[1, 3, 3]", "");
//~ Cerr << tester.Result() << Endl;
UNIT_ASSERT_VALUES_EQUAL(tester.Result(), "[1, (2|3), 3]");
}
Y_UNIT_TEST(CommonCharOneToken) {
TDiffTester tester;
tester.Test("abcde", "accfg");
//~ Cerr << tester.Result() << Endl;
UNIT_ASSERT_VALUES_EQUAL(tester.Result(), "(abcde|accfg)");
}
Y_UNIT_TEST(EqualStringsTwoTokens) {
TDiffTester tester;
TStringBuf str("aaa bbb");
tester.Test(str, str);
//~ Cerr << tester.Result() << Endl;
UNIT_ASSERT_VALUES_EQUAL(tester.Result(), "aaa bbb");
}
Y_UNIT_TEST(NonCrossingStringsTwoTokens) {
TDiffTester tester;
tester.Test("aaa bbb", "ccc ddd");
//~ Cerr << tester.Result() << Endl;
UNIT_ASSERT_VALUES_EQUAL(tester.Result(), "(aaa|ccc) (bbb|ddd)");
tester.Test("aaa bbb", "c d");
//~ Cerr << tester.Result() << Endl;
UNIT_ASSERT_VALUES_EQUAL(tester.Result(), "(aaa|c) (bbb|d)");
}
Y_UNIT_TEST(SimpleTwoTokens) {
TDiffTester tester;
tester.Test("aaa ccd", "abb cce");
//~ Cerr << tester.Result() << Endl;
UNIT_ASSERT_VALUES_EQUAL(tester.Result(), "(aaa|abb) (ccd|cce)");
tester.Test("aac cbb", "aa bb");
//~ Cerr << tester.Result() << Endl;
UNIT_ASSERT_VALUES_EQUAL(tester.Result(), "(aac|aa) (cbb|bb)");
}
Y_UNIT_TEST(MixedTwoTokens) {
TDiffTester tester;
tester.Test("aaa bbb", "bbb aaa");
//~ Cerr << tester.Result() << Endl;
UNIT_ASSERT_VALUES_EQUAL(tester.Result(), "(|bbb )aaa( bbb|)");
tester.Test("aaa bbb", " bbb aaa");
//~ Cerr << tester.Result() << Endl;
UNIT_ASSERT_VALUES_EQUAL(tester.Result(), "(aaa|) bbb(| aaa)");
tester.Test(" aaa bbb ", " bbb aaa ");
//~ Cerr << tester.Result() << Endl;
UNIT_ASSERT_VALUES_EQUAL(tester.Result(), "(| bbb) aaa (bbb |)");
tester.Test("aaa bb", " bbb aa");
//~ Cerr << tester.Result() << Endl;
UNIT_ASSERT_VALUES_EQUAL(tester.Result(), "(aaa|) (bb|bbb aa)");
}
Y_UNIT_TEST(TwoTokensInOneString) {
TDiffTester tester;
tester.Test("aaa bbb", "aaa");
//~ Cerr << tester.Result() << Endl;
UNIT_ASSERT_VALUES_EQUAL(tester.Result(), "aaa( bbb|)");
tester.Test("aaa bbb", "aaa ");
//~ Cerr << tester.Result() << Endl;
UNIT_ASSERT_VALUES_EQUAL(tester.Result(), "aaa (bbb|)");
tester.Test("aaa bbb", " bbb");
//~ Cerr << tester.Result() << Endl;
UNIT_ASSERT_VALUES_EQUAL(tester.Result(), "(aaa|) bbb");
tester.Test("aaa bbb", "bbb");
//~ Cerr << tester.Result() << Endl;
UNIT_ASSERT_VALUES_EQUAL(tester.Result(), "(aaa |)bbb");
}
Y_UNIT_TEST(Multiline) {
TDiffTester tester;
tester.Test("aaa\nabc\nbbb", "aaa\nacc\nbbb");
//~ Cerr << tester.Result() << Endl;
UNIT_ASSERT_VALUES_EQUAL(tester.Result(), "aaa\n(abc|acc)\nbbb");
tester.Test("aaa\nabc\nbbb", "aaa\nac\nbbb");
//~ Cerr << tester.Result() << Endl;
UNIT_ASSERT_VALUES_EQUAL(tester.Result(), "aaa\n(abc|ac)\nbbb");
}
Y_UNIT_TEST(DifferentDelimiters) {
TDiffTester tester;
tester.Test("aaa bbb", "aaa\tbbb");
//~ Cerr << tester.Result() << Endl;
UNIT_ASSERT_VALUES_EQUAL(tester.Result(), "aaa( |\t)bbb");
tester.Test(" aaa\tbbb\n", "\taaa\nbbb ");
//~ Cerr << tester.Result() << Endl;
UNIT_ASSERT_VALUES_EQUAL(tester.Result(), "( |\t)aaa(\t|\n)bbb(\n| )");
}
}
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