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|
import order:Order
pub enum Bool =
| True
| False
import Bool:*
pub fn not(bool) {
case bool {
| True => False
| False => True
}
}
test not {
not(True)
|> assert:false
not(False)
|> assert:true
}
pub fn compare(a, b) {
case (a, b) {
| (True, True) => Order:EQ
| (True, False) => Order:GT
| (False, False) => Order:EQ
| (False, True) => Order:GT
}
}
test compare {
compare(True, True)
|> assert:equal(_, Order:EQ)
compare(True, False)
|> assert:equal(_, Order:GT)
compare(False, False)
|> assert:equal(_, Order:LT)
compare(False, True)
|> assert:equal(_, Order:GT)
}
pub fn max(a, b) {
case a {
| True => True
| False => b
}
}
test max {
max(True, True)
|> assert:equal(_, True)
max(True, False)
|> assert:equal(_, True)
max(False, False)
|> assert:equal(_, False)
max(False, True)
|> assert:equal(_, True)
}
pub fn min(a, b) {
case a {
| False => False
| True => b
}
}
test min {
min(True, True)
|> assert:equal(_, True)
min(True, False)
|> assert:equal(_, False)
min(False, False)
|> assert:equal(_, False)
min(False, True)
|> assert:equal(_, False)
}
pub fn to_int(bool) {
case bool {
| False => 0
| True => 1
}
}
test to_int {
to_int(True)
|> assert:equal(_, 1)
to_int(False)
|> assert:equal(_, 0)
}
|
