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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0+ OR GPL-3.0 WITH Qt-GPL-exception-1.0
#include <gtest/gtest.h>
#include <gmock/gmock-matchers.h>
using namespace testing;
int factorial(int a)
{
if (a == 0)
return 1;
if (a == 1)
return a;
return a * factorial(a - 1);
}
int factorial_it(int a)
{
int result = 1;
for (int i = 2; i <= a; ++i)
result *= i;
return result;
}
TEST(FactorialTest, HandlesZeroInput)
{
EXPECT_EQ(1, factorial(0));
}
TEST(FactorialTest, HandlesPositiveInput)
{
ASSERT_EQ(1, factorial(1));
ASSERT_THAT(factorial(2), Eq(2));
EXPECT_EQ(6, factorial(3));
EXPECT_EQ(40320, factorial(8));
}
TEST(FactorialTest_Iterative, HandlesZeroInput)
{
ASSERT_EQ(1, factorial_it(0));
}
TEST(FactorialTest_Iterative, DISABLED_HandlesPositiveInput)
{
ASSERT_EQ(1, factorial_it(1));
ASSERT_EQ(2, factorial_it(2));
ASSERT_EQ(6, factorial_it(3));
ASSERT_EQ(40320, factorial_it(8));
}
TEST(NumberAsNameStart, 1IsEnough)
{
EXPECT_FALSE(false);
}
int main(int argc, char *argv[])
{
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
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