1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49

use super::{Replicates, TreeBag};
use serde::ser::{Serialize, Serializer};

impl<H, T> Serialize for Replicates<'_, H, T>
where
    H: Ord,
    T: Serialize,
{
    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
    where
        S: Serializer,
    {
        serializer.collect_seq(self.iter())
    }
}

impl<H, T> Serialize for TreeBag<H, T>
where
    H: Ord + Serialize,
    T: Serialize,
{
    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
    where
        S: Serializer,
    {
        serializer.collect_map(self.0.iter())
    }
}

#[cfg(test)]
mod tests {
    use super::super::TreeBag;

    #[test]
    fn json() {
        let counter: TreeBag<i32, &str> = vec![
            (77, "hello"),
            (77, "world"),
            (1, "ignored"),
            (3, "foo"),
            (3, "bar"),
        ]
        .into_iter()
        .collect();
        let result = serde_json::to_string(&counter.duplicates()).unwrap();
        let expected = r#"[["foo","bar"],["hello","world"]]"#;
        assert_eq!(result, expected);
    }
}