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queue.cpp
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#include "gtest/gtest.h"
#include "common.hpp"
#include "../../solutions/cpp/queue.hpp"
class QueueTest : public::testing::Test {
protected:
virtual void SetUp() {
nextId = 0;
eventLog.clear();
}
};
TEST_F(QueueTest, BasicTest) {
Queue<int> s;
s.enqueue(4);
s.enqueue(7);
s.enqueue(23);
EXPECT_EQ(4, s.dequeue());
EXPECT_EQ(7, s.dequeue());
EXPECT_EQ(23, s.dequeue());
EXPECT_THROW(s.dequeue(), empty_queue);
}
TEST_F(QueueTest, PassingRvalueCallsMoveConstructorOnce) {
{
Queue<eventLogger> s;
s.enqueue(eventLogger{});
}
ASSERT_EQ(eventLog.size(), 4);
using std::get;
auto e = eventLog.front();
eventLog.pop_front();
EXPECT_EQ(0, get<0>(e));
EXPECT_EQ(Event::DefaultConstructorCalled, get<1>(e));
e = eventLog.front();
eventLog.pop_front();
EXPECT_EQ(1, get<0>(e));
EXPECT_EQ(Event::MoveConstructorCalled, get<1>(e));
e = eventLog.front();
eventLog.pop_front();
EXPECT_EQ(0, get<0>(e));
EXPECT_EQ(Event::DestructorCalled, get<1>(e));
e = eventLog.front();
eventLog.pop_front();
EXPECT_EQ(1, get<0>(e));
EXPECT_EQ(Event::DestructorCalled, get<1>(e));
}
TEST_F(QueueTest, DequeueReturnsRvalue) {
{
Queue<eventLogger> s;
s.enqueue(eventLogger{});
s.dequeue();
}
ASSERT_EQ(eventLog.size(), 6);
using std::get;
auto e = eventLog.front();
eventLog.pop_front();
EXPECT_EQ(0, get<0>(e));
EXPECT_EQ(Event::DefaultConstructorCalled, get<1>(e));
e = eventLog.front();
eventLog.pop_front();
EXPECT_EQ(1, get<0>(e));
EXPECT_EQ(Event::MoveConstructorCalled, get<1>(e));
e = eventLog.front();
eventLog.pop_front();
EXPECT_EQ(0, get<0>(e));
EXPECT_EQ(Event::DestructorCalled, get<1>(e));
e = eventLog.front();
eventLog.pop_front();
EXPECT_EQ(2, get<0>(e));
EXPECT_EQ(Event::MoveConstructorCalled, get<1>(e));
e = eventLog.front();
eventLog.pop_front();
EXPECT_EQ(1, get<0>(e));
EXPECT_EQ(Event::DestructorCalled, get<1>(e));
e = eventLog.front();
eventLog.pop_front();
EXPECT_EQ(2, get<0>(e));
EXPECT_EQ(Event::DestructorCalled, get<1>(e));
}
TEST_F(QueueTest, PassingReferenceCallsCopyConstructorOnce) {
{
eventLogger l;
Queue<eventLogger> s;
s.enqueue(l);
}
ASSERT_EQ(eventLog.size(), 4);
using std::get;
auto e = eventLog.front();
eventLog.pop_front();
EXPECT_EQ(0, get<0>(e));
EXPECT_EQ(Event::DefaultConstructorCalled, get<1>(e));
e = eventLog.front();
eventLog.pop_front();
EXPECT_EQ(1, get<0>(e));
EXPECT_EQ(Event::CopyConstructorCalled, get<1>(e));
e = eventLog.front();
eventLog.pop_front();
EXPECT_EQ(1, get<0>(e));
EXPECT_EQ(Event::DestructorCalled, get<1>(e));
e = eventLog.front();
eventLog.pop_front();
EXPECT_EQ(0, get<0>(e));
EXPECT_EQ(Event::DestructorCalled, get<1>(e));
}
TEST_F(QueueTest, DequeueOfCopyReturnsRvalueOfCopy) {
{
Queue<eventLogger> s;
eventLogger l;
s.enqueue(l);
s.dequeue();
}
ASSERT_EQ(eventLog.size(), 6);
using std::get;
auto e = eventLog.front();
eventLog.pop_front();
EXPECT_EQ(0, get<0>(e));
EXPECT_EQ(Event::DefaultConstructorCalled, get<1>(e));
e = eventLog.front();
eventLog.pop_front();
EXPECT_EQ(1, get<0>(e));
EXPECT_EQ(Event::CopyConstructorCalled, get<1>(e));
e = eventLog.front();
eventLog.pop_front();
EXPECT_EQ(2, get<0>(e));
EXPECT_EQ(Event::MoveConstructorCalled, get<1>(e));
e = eventLog.front();
eventLog.pop_front();
EXPECT_EQ(1, get<0>(e));
EXPECT_EQ(Event::DestructorCalled, get<1>(e));
e = eventLog.front();
eventLog.pop_front();
EXPECT_EQ(2, get<0>(e));
EXPECT_EQ(Event::DestructorCalled, get<1>(e));
e = eventLog.front();
eventLog.pop_front();
EXPECT_EQ(0, get<0>(e));
EXPECT_EQ(Event::DestructorCalled, get<1>(e));
}