#include "../common/expression.h"

#include "gtest/gtest.h"
#include <cmath>

#define TEST_EXPR(name, a, b)                                                                                          \
    TEST(ExpressionTest, name)                                                                                         \
    {                                                                                                                  \
        Expression exp(8);                                                                                             \
        ASSERT_EQ(exp.parse(a), b) << a;                                                                               \
    }

namespace
{

TEST_EXPR(Number, "1", 1)
TEST_EXPR(Multiply, "2*2", 4)
TEST_EXPR(Whitespace, "3 * 3", 9)
TEST_EXPR(Powers, "2^8", 256)
TEST_EXPR(OrderOfOperations, "2+2*2", 6)
TEST_EXPR(Fn, "2*cos(1)", 2 * cos(1))
TEST_EXPR(Variable, "x / 2", 4)
TEST_EXPR(Negative, "-2 * 2", -4)
TEST_EXPR(UnknownFnReturnsZero, "blah(22)", 0)

} // namespace

int main(int argc, char **argv)
{
    ::testing::InitGoogleTest(&argc, argv);
    return RUN_ALL_TESTS();
}