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v/vlib/adt/queue_test.v
2021-12-23 18:57:15 +02:00

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855 B
V

module adt
fn test_is_empty() {
mut queue := Queue<int>{}
assert queue.is_empty() == true
queue.push(1)
assert queue.is_empty() == false
}
fn test_len() ? {
mut queue := Queue<int>{}
assert queue.len() == 0
queue.push(1)
assert queue.len() == 1
queue.pop() ?
assert queue.len() == 0
}
fn test_peek() ? {
mut queue := Queue<int>{}
queue.push(1)
assert queue.peek() ? == 1
queue.push(2)
assert queue.peek() ? == 1
queue = Queue<int>{}
queue.peek() or { return }
assert false
}
fn test_push() ? {
mut queue := Queue<int>{}
queue.push(1)
queue.push(2)
assert queue.peek() ? == 1
}
fn test_pop() ? {
mut queue := Queue<int>{}
queue.push(1)
queue.push(2)
queue.push(3)
assert queue.pop() ? == 1
queue.push(4)
assert queue.pop() ? == 2
assert queue.pop() ? == 3
queue = Queue<int>{}
queue.pop() or { return }
assert false
}