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//===- llvm/unittest/ADT/PriorityWorklist.cpp -----------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// PriorityWorklist unit tests.
//
//===----------------------------------------------------------------------===//
#include "llvm/ADT/PriorityWorklist.h"
#include "gtest/gtest.h"
#include <list>
#include <vector>
namespace {
using namespace llvm;
template <typename T> class PriorityWorklistTest : public ::testing::Test {};
typedef ::testing::Types<PriorityWorklist<int>, SmallPriorityWorklist<int, 2>>
TestTypes;
TYPED_TEST_CASE(PriorityWorklistTest, TestTypes);
TYPED_TEST(PriorityWorklistTest, Basic) {
TypeParam W;
EXPECT_TRUE(W.empty());
EXPECT_EQ(0u, W.size());
EXPECT_FALSE(W.count(42));
EXPECT_TRUE(W.insert(21));
EXPECT_TRUE(W.insert(42));
EXPECT_TRUE(W.insert(17));
EXPECT_FALSE(W.empty());
EXPECT_EQ(3u, W.size());
EXPECT_TRUE(W.count(42));
EXPECT_FALSE(W.erase(75));
EXPECT_EQ(3u, W.size());
EXPECT_EQ(17, W.back());
EXPECT_TRUE(W.erase(17));
EXPECT_FALSE(W.count(17));
EXPECT_EQ(2u, W.size());
EXPECT_EQ(42, W.back());
W.clear();
EXPECT_TRUE(W.empty());
EXPECT_EQ(0u, W.size());
EXPECT_TRUE(W.insert(21));
EXPECT_TRUE(W.insert(42));
EXPECT_TRUE(W.insert(12));
EXPECT_TRUE(W.insert(17));
EXPECT_TRUE(W.count(12));
EXPECT_TRUE(W.count(17));
EXPECT_EQ(4u, W.size());
EXPECT_EQ(17, W.back());
EXPECT_TRUE(W.erase(12));
EXPECT_FALSE(W.count(12));
EXPECT_TRUE(W.count(17));
EXPECT_EQ(3u, W.size());
EXPECT_EQ(17, W.back());
EXPECT_FALSE(W.insert(42));
EXPECT_EQ(3u, W.size());
EXPECT_EQ(42, W.pop_back_val());
EXPECT_EQ(17, W.pop_back_val());
EXPECT_EQ(21, W.pop_back_val());
EXPECT_TRUE(W.empty());
}
TYPED_TEST(PriorityWorklistTest, InsertSequence) {
TypeParam W;
ASSERT_TRUE(W.insert(2));
ASSERT_TRUE(W.insert(4));
ASSERT_TRUE(W.insert(7));
// Insert a sequence that has internal duplicates and a duplicate among
// existing entries.
W.insert(std::vector<int>({42, 13, 42, 7, 8}));
EXPECT_EQ(8, W.pop_back_val());
EXPECT_EQ(7, W.pop_back_val());
EXPECT_EQ(42, W.pop_back_val());
EXPECT_EQ(13, W.pop_back_val());
EXPECT_EQ(4, W.pop_back_val());
EXPECT_EQ(2, W.pop_back_val());
ASSERT_TRUE(W.empty());
// Simpler tests with various other input types.
ASSERT_TRUE(W.insert(2));
ASSERT_TRUE(W.insert(7));
// Use a non-random-access container.
W.insert(std::list<int>({7, 5}));
EXPECT_EQ(5, W.pop_back_val());
EXPECT_EQ(7, W.pop_back_val());
EXPECT_EQ(2, W.pop_back_val());
ASSERT_TRUE(W.empty());
ASSERT_TRUE(W.insert(2));
ASSERT_TRUE(W.insert(7));
// Use a raw array.
int A[] = {7, 5};
W.insert(A);
EXPECT_EQ(5, W.pop_back_val());
EXPECT_EQ(7, W.pop_back_val());
EXPECT_EQ(2, W.pop_back_val());
ASSERT_TRUE(W.empty());
ASSERT_TRUE(W.insert(2));
ASSERT_TRUE(W.insert(7));
// Inserting an empty sequence does nothing.
W.insert(std::vector<int>());
EXPECT_EQ(7, W.pop_back_val());
EXPECT_EQ(2, W.pop_back_val());
ASSERT_TRUE(W.empty());
}
TYPED_TEST(PriorityWorklistTest, EraseIf) {
TypeParam W;
W.insert(23);
W.insert(10);
W.insert(47);
W.insert(42);
W.insert(23);
W.insert(13);
W.insert(26);
W.insert(42);
EXPECT_EQ(6u, W.size());
EXPECT_FALSE(W.erase_if([](int i) { return i > 100; }));
EXPECT_EQ(6u, W.size());
EXPECT_EQ(42, W.back());
EXPECT_TRUE(W.erase_if([](int i) {
assert(i != 0 && "Saw a null value!");
return (i & 1) == 0;
}));
EXPECT_EQ(3u, W.size());
EXPECT_FALSE(W.count(42));
EXPECT_FALSE(W.count(26));
EXPECT_FALSE(W.count(10));
EXPECT_FALSE(W.insert(47));
EXPECT_FALSE(W.insert(23));
EXPECT_EQ(23, W.pop_back_val());
EXPECT_EQ(47, W.pop_back_val());
EXPECT_EQ(13, W.pop_back_val());
}
}
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