static void
test_plus_returns_sum() {
Expression *five = dollar( 5 );
Expression *addend_five = dollar( 5 );
Expression *result = plus( five, addend_five );
Sum *sum = ( Sum * ) result->value;
assert_true( equal( money_from( five ), money_from( sum->augend ) ) );
assert_true( equal( money_from( addend_five ), money_from( sum->addend ) ) );
free_expression( five );
free_expression( addend_five );
free_expression( result );
delete_all_rates();
}
static void
test_equal() {
Money *five_dollar1 = money_from( dollar( 5 ) );
Money *five_dollar2 = money_from( dollar( 5 ) );
Money *six_dollar = money_from( dollar( 6 ) );
Money *five_franc = money_from( franc( 5 ) );
assert_true( equal( five_dollar1, five_dollar2 ) );
assert_false( equal( five_dollar1, six_dollar ) );
assert_false( equal( five_dollar1, five_franc ) );
free( five_dollar1 );
free( five_dollar2 );
free( six_dollar );
free( five_franc );
}
static void
test_multiply_dollar_5x2() {
Expression *five = dollar( 5 );
Expression *product = multiply( five, 2 );
Expression *ten = dollar( 10 );
assert_true( equal( reduce( product, USD ), money_from( ten ) ) );
free( five );
free( product );
free( ten );
}
static void
test_multiply_dollar_5x3x3() {
Expression *five = dollar( 5 );
Expression *product = multiply( multiply( five, 3 ), 3 );
Expression *fortyfive = dollar( 45 );
assert_true( equal( reduce( product, USD ), money_from( fortyfive ) ) );
free( five );
free( product );
free( fortyfive );
}
static void
test_reduce_different_currency() {
Expression *two_franc = franc( 2 );
Expression *one_dollar = dollar( 1 );
add_rate( CHF, USD, 2 );
Money *result = reduce( two_franc, USD );
assert_true( equal( result, money_from( one_dollar ) ) );
free_expression( two_franc );
free_expression( one_dollar );
free_money( result );
delete_all_rates();
}
static void
test_multiply_dollar_5x2() {
Expression *five = dollar( 5 );
Expression *product = multiply( five, 2 );
Expression *ten = dollar( 10 );
Money *reduced = reduce( product, USD );
assert_true( equal( reduced, money_from( ten ) ) );
free_expression( five );
free_expression( product );
free_expression( ten );
free_money( reduced );
delete_all_rates();
}
static void
test_simple_addition() {
Expression *five = dollar( 5 );
Expression *addend_five = dollar( 5 );
Expression *ten = dollar( 10 );
Expression *sum = plus( five, addend_five );
Money *reduced = reduce( sum, USD );
assert_true( equal( money_from( ten ), reduced ) );
free( five );
free( addend_five );
free( sum );
free( reduced );
free( ten );
}
static void
test_reduce_sum() {
Expression *three_usd = dollar( 3 );
Expression *four_usd = dollar( 4 );
Expression *seven_usd = dollar( 7 );
Expression *exp = plus( three_usd, four_usd );
Money *result = reduce( exp , USD );
assert_true( equal( result , money_from( seven_usd ) ) );
free_expression( three_usd );
free_expression( four_usd );
free_expression( seven_usd );
free_expression( exp );
free_money( result );
delete_all_rates();
}
static void
test_multiply_dollar_5x3x3() {
Expression *five = dollar( 5 );
Expression *product1 = multiply( five, 3 );
Expression *product2 = multiply( product1, 3 );
Expression *fortyfive = dollar( 45 );
Money *reduced = reduce( product2, USD );
assert_true( equal( reduced, money_from( fortyfive ) ) );
free_expression( five );
free_expression( product1 );
free_expression( product2 );
free_expression( fortyfive );
free_money( reduced );
delete_all_rates();
}
static void
test_mixed_addition() {
Expression *five_bucks = dollar( 5 );
Expression *ten_francs = franc( 10 );
Expression *ten_usd = dollar( 10 );
add_rate( CHF, USD, 2 );
Expression *exp = plus( five_bucks, ten_francs );
Money *result = reduce( exp, USD );
assert_true( equal( money_from( ten_usd ), result ) );
free_expression( five_bucks );
free_expression( ten_francs );
free_expression( ten_usd );
free_expression( exp );
free_money( result );
delete_all_rates();
}
static void
test_multiple_addition() {
Expression *five_bucks = dollar( 5 );
Expression *ten_francs = franc( 10 );
Expression *fifteen_bucks = dollar( 15 );
add_rate( CHF, USD, 2 );
Expression *exp1 = plus( five_bucks, ten_francs );
Expression *exp2 = plus( exp1, five_bucks );
Money *result = reduce( exp2, USD );
assert_true( equal( money_from( fifteen_bucks ), result ) );
free_expression( five_bucks );
free_expression( ten_francs );
free_expression( fifteen_bucks );
free_expression( exp1 );
free_expression( exp2 );
free_money( result );
delete_all_rates();
}
static void
test_equal() {
Expression *five_dollar1 = dollar( 5 );
Expression *five_dollar2 = dollar( 5 );
Expression *six_dollar = dollar( 6 );
Expression *five_franc = franc( 5 );
assert_true( equal( money_from( five_dollar1 ), money_from( five_dollar2 ) ) );
assert_false( equal( money_from( five_dollar1 ), money_from( six_dollar ) ) );
assert_false( equal( money_from( five_dollar1 ), money_from( five_franc ) ) );
free_expression( five_dollar1 );
free_expression( five_dollar2 );
free_expression( six_dollar );
free_expression( five_franc );
delete_all_rates();
}
static void
test_currency() {
assert_int_equal( USD, currency_of( money_from( dollar( 1 ) ) ) );
assert_int_equal( CHF, currency_of( money_from( franc( 1 ) ) ) );
}