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//===---------- llvm/unittest/Support/DJBTest.cpp -------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/Support/DJB.h"
#include "llvm/ADT/Twine.h"
#include "gtest/gtest.h"
using namespace llvm;
TEST(DJBTest, caseFolding) {
struct TestCase {
StringLiteral One;
StringLiteral Two;
};
static constexpr TestCase Tests[] = {
{{"ASDF"}, {"asdf"}},
{{"qWeR"}, {"QwEr"}},
{{"qqqqqqqqqqqqqqqqqqqq"}, {"QQQQQQQQQQQQQQQQQQQQ"}},
{{"I"}, {"i"}},
// Latin Small Letter Dotless I
{{/*U+130*/ "\xc4\xb0"}, {"i"}},
// Latin Capital Letter I With Dot Above
{{/*U+131*/ "\xc4\xb1"}, {"i"}},
// Latin Capital Letter A With Grave
{{/*U+c0*/ "\xc3\x80"}, {/*U+e0*/ "\xc3\xa0"}},
// Latin Capital Letter A With Macron
{{/*U+100*/ "\xc4\x80"}, {/*U+101*/ "\xc4\x81"}},
// Latin Capital Letter L With Acute
{{/*U+139*/ "\xc4\xb9"}, {/*U+13a*/ "\xc4\xba"}},
// Cyrillic Capital Letter Ie
{{/*U+415*/ "\xd0\x95"}, {/*U+435*/ "\xd0\xb5"}},
// Latin Capital Letter A With Circumflex And Grave
{{/*U+1ea6*/ "\xe1\xba\xa6"}, {/*U+1ea7*/ "\xe1\xba\xa7"}},
// Kelvin Sign
{{/*U+212a*/ "\xe2\x84\xaa"}, {"k"}},
// Glagolitic Capital Letter Chrivi
{{/*U+2c1d*/ "\xe2\xb0\x9d"}, {/*U+2c4d*/ "\xe2\xb1\x8d"}},
// Fullwidth Latin Capital Letter M
{{/*U+ff2d*/ "\xef\xbc\xad"}, {/*U+ff4d*/ "\xef\xbd\x8d"}},
// Old Hungarian Capital Letter Ej
{{/*U+10c92*/ "\xf0\x90\xb2\x92"}, {/*U+10cd2*/ "\xf0\x90\xb3\x92"}},
};
for (const TestCase &T : Tests) {
SCOPED_TRACE("Comparing '" + T.One + "' and '" + T.Two + "'");
EXPECT_EQ(caseFoldingDjbHash(T.One), caseFoldingDjbHash(T.Two));
}
}
TEST(DJBTest, knownValuesLowerCase) {
struct TestCase {
StringLiteral Text;
uint32_t Hash;
};
static constexpr TestCase Tests[] = {
{{""}, 5381u},
{{"f"}, 177675u},
{{"fo"}, 5863386u},
{{"foo"}, 193491849u},
{{"foob"}, 2090263819u},
{{"fooba"}, 259229388u},
{{"foobar"}, 4259602622u},
{{"pneumonoultramicroscopicsilicovolcanoconiosis"}, 3999417781u},
};
for (const TestCase &T : Tests) {
SCOPED_TRACE("Text: '" + T.Text + "'");
EXPECT_EQ(T.Hash, djbHash(T.Text));
EXPECT_EQ(T.Hash, caseFoldingDjbHash(T.Text));
EXPECT_EQ(T.Hash, caseFoldingDjbHash(T.Text.upper()));
}
}
TEST(DJBTest, knownValuesUnicode) {
EXPECT_EQ(5866553u, djbHash(/*U+130*/ "\xc4\xb0"));
EXPECT_EQ(177678u, caseFoldingDjbHash(/*U+130*/ "\xc4\xb0"));
EXPECT_EQ(
1302161417u,
djbHash("\xc4\xb0\xc4\xb1\xc3\x80\xc3\xa0\xc4\x80\xc4\x81\xc4\xb9\xc4\xba"
"\xd0\x95\xd0\xb5\xe1\xba\xa6\xe1\xba\xa7\xe2\x84\xaa\x6b\xe2\xb0"
"\x9d\xe2\xb1\x8d\xef\xbc\xad\xef\xbd\x8d\xf0\x90\xb2\x92\xf0\x90"
"\xb3\x92"));
EXPECT_EQ(
1145571043u,
caseFoldingDjbHash(
"\xc4\xb0\xc4\xb1\xc3\x80\xc3\xa0\xc4\x80\xc4\x81\xc4\xb9\xc4\xba"
"\xd0\x95\xd0\xb5\xe1\xba\xa6\xe1\xba\xa7\xe2\x84\xaa\x6b\xe2\xb0"
"\x9d\xe2\xb1\x8d\xef\xbc\xad\xef\xbd\x8d\xf0\x90\xb2\x92\xf0\x90"
"\xb3\x92"));
}
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