modio_logger_db/types/
datatype.rs

1use crate::error::Error;
2use serde::{Deserialize, Serialize};
3
4#[derive(Debug, Copy, Clone, PartialEq, Eq, Serialize, Deserialize)]
5#[serde(rename_all = "lowercase")]
6pub enum DataType {
7    F64,
8    String,
9    Bool,
10    U64,
11}
12
13impl std::fmt::Display for DataType {
14    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
15        match self {
16            Self::F64 => write!(f, "f64"),
17            Self::String => write!(f, "string"),
18            Self::Bool => write!(f, "bool"),
19            Self::U64 => write!(f, "u64"),
20        }
21    }
22}
23
24impl DataType {
25    pub fn vec_from_str(value: &str) -> Result<Vec<Self>, Error> {
26        let res: Vec<Self> = serde_json::from_str(value)?;
27        Ok(res)
28    }
29}
30
31#[test]
32fn test_datatype_string_roundtrip() {
33    fn around(b: DataType) -> DataType {
34        let sval = serde_json::to_string(&b).expect("Failed to serialize value");
35        serde_json::from_str(&sval).expect("Failed to parse back again")
36    }
37    assert_eq!(DataType::F64, around(DataType::F64));
38    assert_eq!(DataType::String, around(DataType::String));
39    assert_eq!(DataType::Bool, around(DataType::Bool));
40    assert_eq!(DataType::U64, around(DataType::U64));
41}
42
43#[test]
44fn test_datatype_display() {
45    let out = format!("{}", DataType::String);
46    assert_eq!(out, "string");
47}
48
49#[test]
50fn test_datatype_json_trip() {
51    let data: Vec<DataType> = vec![
52        DataType::F64,
53        DataType::Bool,
54        DataType::U64,
55        DataType::String,
56    ];
57
58    let jsoned = serde_json::to_string(&data).expect("Failed to serialize");
59    let original: Vec<DataType> = serde_json::from_str(&jsoned).expect("Failed to deserialize");
60    let back = DataType::vec_from_str(&jsoned).expect("Failed to deserialize");
61    assert_eq!(data, back, "One is not like the other");
62    assert_eq!(jsoned, r#"["f64","bool","u64","string"]"#);
63    assert_eq!(
64        data, original,
65        "Before and after serialization should match"
66    );
67}
modio_logger_db/types/datatype.rs

modio_logger_db/types/
datatype.rs
