1 //===----- SymbolStringPoolTest.cpp - Unit tests for SymbolStringPool -----===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "llvm/ExecutionEngine/Orc/SymbolStringPool.h" 10 #include "gtest/gtest.h" 11 12 using namespace llvm; 13 using namespace llvm::orc; 14 15 namespace { 16 17 TEST(SymbolStringPool, UniquingAndComparisons) { 18 SymbolStringPool SP; 19 auto P1 = SP.intern("hello"); 20 21 std::string S("hel"); 22 S += "lo"; 23 auto P2 = SP.intern(S); 24 25 auto P3 = SP.intern("goodbye"); 26 27 EXPECT_EQ(P1, P2) << "Failed to unique entries"; 28 EXPECT_NE(P1, P3) << "Inequal pooled symbol strings comparing equal"; 29 30 // We want to test that less-than comparison of SymbolStringPtrs compiles, 31 // however we can't test the actual result as this is a pointer comparison and 32 // SymbolStringPtr doesn't expose the underlying address of the string. 33 (void)(P1 < P3); 34 } 35 36 TEST(SymbolStringPool, Dereference) { 37 SymbolStringPool SP; 38 auto Foo = SP.intern("foo"); 39 EXPECT_EQ(*Foo, "foo") << "Equality on dereferenced string failed"; 40 } 41 42 TEST(SymbolStringPool, ClearDeadEntries) { 43 SymbolStringPool SP; 44 { 45 auto P1 = SP.intern("s1"); 46 SP.clearDeadEntries(); 47 EXPECT_FALSE(SP.empty()) << "\"s1\" entry in pool should still be retained"; 48 } 49 SP.clearDeadEntries(); 50 EXPECT_TRUE(SP.empty()) << "pool should be empty"; 51 } 52 53 } 54