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//===- llvm/unittest/ADT/SmallSetTest.cpp ------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// SmallSet unit tests.
//
//===----------------------------------------------------------------------===//
#include "llvm/ADT/SmallSet.h"
#include "gtest/gtest.h"
using namespace llvm;
TEST(SmallSetTest, Insert) {
SmallSet<int, 4> s1;
for (int i = 0; i < 4; i++)
s1.insert(i);
for (int i = 0; i < 4; i++)
s1.insert(i);
EXPECT_EQ(4u, s1.size());
for (int i = 0; i < 4; i++)
EXPECT_EQ(1u, s1.count(i));
EXPECT_EQ(0u, s1.count(4));
}
TEST(SmallSetTest, Grow) {
SmallSet<int, 4> s1;
for (int i = 0; i < 8; i++)
s1.insert(i);
EXPECT_EQ(8u, s1.size());
for (int i = 0; i < 8; i++)
EXPECT_EQ(1u, s1.count(i));
EXPECT_EQ(0u, s1.count(8));
}
TEST(SmallSetTest, Erase) {
SmallSet<int, 4> s1;
for (int i = 0; i < 8; i++)
s1.insert(i);
EXPECT_EQ(8u, s1.size());
// Remove elements one by one and check if all other elements are still there.
for (int i = 0; i < 8; i++) {
EXPECT_EQ(1u, s1.count(i));
EXPECT_TRUE(s1.erase(i));
EXPECT_EQ(0u, s1.count(i));
EXPECT_EQ(8u - i - 1, s1.size());
for (int j = i + 1; j < 8; j++)
EXPECT_EQ(1u, s1.count(j));
}
EXPECT_EQ(0u, s1.count(8));
}
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