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