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//============================================================================
// ʹÓà googletest ²âÊÔ¿ò¼Ü
//============================================================================
// Returns n! (the factorial of n). For negative n, n! is defined to be 1.
int Factorial(int n)
{
int result = 1;
for (int i = 1; i <= n; i++)
{
result *= i;
}
return result;
}
#include "src/gtest-all.cc"
// Tests Factorial().
// Tests factorial of negative numbers.
TEST(FactorialTest, Negative)
{
EXPECT_EQ(1, Factorial(-5));
EXPECT_EQ(1, Factorial(-1));
EXPECT_TRUE(Factorial(-10)> 0);
}
// Tests factorial of 0.
TEST(FactorialTest, Zero)
{
EXPECT_EQ(1, Factorial(0));
}
// Tests factorial of positive numbers.
TEST(FactorialTest, Positive)
{
EXPECT_EQ(1, Factorial(1));
EXPECT_EQ(2, Factorial(2));
EXPECT_EQ(6, Factorial(3));
EXPECT_EQ(40320, Factorial(8));
}
#include "src/gtest_main.cc"
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