mock_it/
validator.rs

1use std::sync::Arc;
2use std::sync::Mutex;
3
4pub fn verify<I: PartialEq>(validator: Validator<I>) -> bool {
5    validator.called()
6}
7
8pub struct Validator<I> {
9    calls: Arc<Mutex<Vec<I>>>,
10    result: Option<bool>,
11    input: I,
12}
13
14impl<I> Validator<I> {
15    pub fn new(calls: Arc<Mutex<Vec<I>>>, input: I) -> Validator<I> {
16        Validator {
17            calls,
18            result: None,
19            input,
20        }
21    }
22}
23
24impl<I: PartialEq> Validator<I> {
25    pub fn result(&mut self) -> bool {
26        match self.result {
27            Some(val) => val,
28            None => {
29                let calls = self.calls.lock().unwrap();
30                let was_called = calls.iter().any(|value| value == &self.input);
31                self.result = Some(was_called);
32                was_called
33            }
34        }
35    }
36    pub fn times(mut self, times: usize) -> Validator<I> {
37        let times_called = {
38            let calls = self.calls.lock().unwrap();
39            calls.iter().filter(|value| *value == &self.input).count()
40        };
41
42        if times_called != times {
43            self.result = Some(false)
44        }
45
46        self
47    }
48    pub fn called(self) -> bool {
49        let mut this = self;
50        this.result()
51    }
52}
53
54#[cfg(test)]
55mod test {
56    use super::*;
57    use table_test::table_test;
58
59    #[test]
60    fn times() {
61        let table = vec![
62            ((vec![1, 1, 3], true, 1, 1), false),
63            ((vec![1, 1, 3], true, 1, 2), true),
64            ((vec![1, 1, 3], true, 3, 1), true),
65            ((vec![1, 1, 3], false, 3, 1), false),
66            ((vec![1, 1, 3], false, 3, 1), false),
67            ((vec![1, 1, 3], false, 3, 1), false),
68        ];
69
70        for (test_case, (calls, initial_result, input, times), expected) in table_test!(table) {
71            let mut validator = Validator::new(Arc::new(Mutex::new(calls.clone())), input);
72            validator.result = Some(initial_result);
73
74            let actual = verify(validator.times(times));
75
76            test_case
77                .given(&format!(
78                    "Validator: calls {:?}, initial_result {:?}, input {:?}",
79                    calls, initial_result, input
80                ))
81                .given(&format!("times {:?}", times))
82                .when("verify validator")
83                .then(&format!("{:?}", expected))
84                .assert_eq(expected, actual);
85        }
86    }
87}
mock_it/validator.rs

mock_it/
validator.rs
