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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
{{u8"\u0130"}, {"i"}},
// Latin Capital Letter I With Dot Above
{{u8"\u0131"}, {"i"}},
// Latin Capital Letter A With Grave
{{u8"\u00c0"}, {u8"\u00e0"}},
// Latin Capital Letter A With Macron
{{u8"\u0100"}, {u8"\u0101"}},
// Latin Capital Letter L With Acute
{{u8"\u0139"}, {u8"\u013a"}},
// Cyrillic Capital Letter Ie
{{u8"\u0415"}, {u8"\u0435"}},
// Latin Capital Letter A With Circumflex And Grave
{{u8"\u1ea6"}, {u8"\u1ea7"}},
// Kelvin Sign
{{u8"\u212a"}, {u8"\u006b"}},
// Glagolitic Capital Letter Chrivi
{{u8"\u2c1d"}, {u8"\u2c4d"}},
// Fullwidth Latin Capital Letter M
{{u8"\uff2d"}, {u8"\uff4d"}},
// Old Hungarian Capital Letter Ej
{{u8"\U00010c92"}, {u8"\U00010cd2"}},
};
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(u8"\u0130"));
EXPECT_EQ(177678u, caseFoldingDjbHash(u8"\u0130"));
EXPECT_EQ(
1302161417u,
djbHash(
u8"\u0130\u0131\u00c0\u00e0\u0100\u0101\u0139\u013a\u0415\u0435\u1ea6"
u8"\u1ea7\u212a\u006b\u2c1d\u2c4d\uff2d\uff4d\U00010c92\U00010cd2"));
EXPECT_EQ(
1145571043u,
caseFoldingDjbHash(
u8"\u0130\u0131\u00c0\u00e0\u0100\u0101\u0139\u013a\u0415\u0435\u1ea6"
u8"\u1ea7\u212a\u006b\u2c1d\u2c4d\uff2d\uff4d\U00010c92\U00010cd2"));
}
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