From ca99ad3f0dfd67d8c3f0873e90afc27ff11c8545 Mon Sep 17 00:00:00 2001 From: Chandler Carruth Date: Sun, 4 Mar 2012 10:55:27 +0000 Subject: Add generic support for hashing StringRef objects using the new hashing library. llvm-svn: 152003 --- llvm/unittests/ADT/StringRefTest.cpp | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'llvm/unittests/ADT/StringRefTest.cpp') diff --git a/llvm/unittests/ADT/StringRefTest.cpp b/llvm/unittests/ADT/StringRefTest.cpp index d91084381ec..b2f6fdcce03 100644 --- a/llvm/unittests/ADT/StringRefTest.cpp +++ b/llvm/unittests/ADT/StringRefTest.cpp @@ -9,6 +9,7 @@ #include "gtest/gtest.h" #include "llvm/ADT/StringRef.h" +#include "llvm/ADT/Hashing.h" #include "llvm/ADT/SmallVector.h" #include "llvm/Support/raw_ostream.h" using namespace llvm; @@ -291,4 +292,22 @@ TEST(StringRefTest, Misc) { EXPECT_EQ("hello", OS.str()); } +TEST(StringRefTest, Hashing) { + EXPECT_EQ(hash_value(std::string()), hash_value(StringRef())); + EXPECT_EQ(hash_value(std::string()), hash_value(StringRef(""))); + std::string S = "hello world"; + hash_code H = hash_value(S); + EXPECT_EQ(H, hash_value(StringRef("hello world"))); + EXPECT_EQ(H, hash_value(StringRef(S))); + EXPECT_NE(H, hash_value(StringRef("hello worl"))); + EXPECT_EQ(hash_value(std::string("hello worl")), + hash_value(StringRef("hello worl"))); + EXPECT_NE(H, hash_value(StringRef("hello world "))); + EXPECT_EQ(hash_value(std::string("hello world ")), + hash_value(StringRef("hello world "))); + EXPECT_EQ(H, hash_value(StringRef("hello world\0"))); + EXPECT_NE(hash_value(std::string("ello worl")), + hash_value(StringRef("hello world").slice(1, -1))); +} + } // end anonymous namespace -- cgit v1.2.3