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#include "BLI_stack.hh"
#include "testing/testing.h"
using BLI::Stack;
using IntStack = Stack<int>;
TEST(stack, DefaultConstructor)
{
IntStack stack;
EXPECT_EQ(stack.size(), 0);
EXPECT_TRUE(stack.is_empty());
}
TEST(stack, ArrayRefConstructor)
{
std::array<int, 3> array = {4, 7, 2};
IntStack stack(array);
EXPECT_EQ(stack.size(), 3);
EXPECT_EQ(stack.pop(), 2);
EXPECT_EQ(stack.pop(), 7);
EXPECT_EQ(stack.pop(), 4);
EXPECT_TRUE(stack.is_empty());
}
TEST(stack, Push)
{
IntStack stack;
EXPECT_EQ(stack.size(), 0);
stack.push(3);
EXPECT_EQ(stack.size(), 1);
stack.push(5);
EXPECT_EQ(stack.size(), 2);
}
TEST(stack, PushMultiple)
{
IntStack stack;
EXPECT_EQ(stack.size(), 0);
stack.push_multiple({1, 2, 3});
EXPECT_EQ(stack.size(), 3);
EXPECT_EQ(stack.pop(), 3);
EXPECT_EQ(stack.pop(), 2);
EXPECT_EQ(stack.pop(), 1);
}
TEST(stack, Pop)
{
IntStack stack;
stack.push(4);
stack.push(6);
EXPECT_EQ(stack.pop(), 6);
EXPECT_EQ(stack.pop(), 4);
}
TEST(stack, Peek)
{
IntStack stack;
stack.push(3);
stack.push(4);
EXPECT_EQ(stack.peek(), 4);
EXPECT_EQ(stack.peek(), 4);
stack.pop();
EXPECT_EQ(stack.peek(), 3);
}
TEST(stack, UniquePtrValues)
{
Stack<std::unique_ptr<int>> stack;
stack.push(std::unique_ptr<int>(new int()));
stack.push(std::unique_ptr<int>(new int()));
std::unique_ptr<int> a = stack.pop();
std::unique_ptr<int> &b = stack.peek();
UNUSED_VARS(a, b);
}
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