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63b14baf79
This operation is analogous to its counterpart in DenseMap: It allows lookup via cheap-to-construct keys (provided that getHashValue and isEqual are implemented for the cheap key-type in the DenseMapInfo specialization). Thanks to Chandler for the review. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220168 91177308-0d34-0410-b5e6-96231b3b80d8
69 lines
1.8 KiB
C++
69 lines
1.8 KiB
C++
//===- llvm/unittest/ADT/DenseSetTest.cpp - DenseSet unit tests --*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "gtest/gtest.h"
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#include "llvm/ADT/DenseSet.h"
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using namespace llvm;
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namespace {
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// Test fixture
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class DenseSetTest : public testing::Test {
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};
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// Test hashing with a set of only two entries.
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TEST_F(DenseSetTest, DoubleEntrySetTest) {
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llvm::DenseSet<unsigned> set(2);
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set.insert(0);
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set.insert(1);
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// Original failure was an infinite loop in this call:
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EXPECT_EQ(0u, set.count(2));
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}
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struct TestDenseSetInfo {
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static inline unsigned getEmptyKey() { return ~0; }
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static inline unsigned getTombstoneKey() { return ~0U - 1; }
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static unsigned getHashValue(const unsigned& Val) { return Val * 37U; }
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static unsigned getHashValue(const char* Val) {
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return (unsigned)(Val[0] - 'a') * 37U;
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}
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static bool isEqual(const unsigned& LHS, const unsigned& RHS) {
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return LHS == RHS;
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}
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static bool isEqual(const char* LHS, const unsigned& RHS) {
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return (unsigned)(LHS[0] - 'a') == RHS;
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}
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};
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TEST(DenseSetCustomTest, FindAsTest) {
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DenseSet<unsigned, TestDenseSetInfo> set;
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set.insert(0);
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set.insert(1);
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set.insert(2);
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// Size tests
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EXPECT_EQ(3u, set.size());
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// Normal lookup tests
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EXPECT_EQ(1u, set.count(1));
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EXPECT_EQ(0u, *set.find(0));
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EXPECT_EQ(1u, *set.find(1));
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EXPECT_EQ(2u, *set.find(2));
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EXPECT_TRUE(set.find(3) == set.end());
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// find_as() tests
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EXPECT_EQ(0u, *set.find_as("a"));
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EXPECT_EQ(1u, *set.find_as("b"));
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EXPECT_EQ(2u, *set.find_as("c"));
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EXPECT_TRUE(set.find_as("d") == set.end());
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}
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}
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