argot_cli/read_config/
json.rs

1#![cfg(feature = "json")]
2use std::fs::File;
3use std::io::{BufReader, self};
4use std::path::Path;
5
6use crate::types::ConfigEntries;
7use crate::arg_parser::ParserConfig;
8
9pub fn read_config_file<P>(filename: P) -> io::Result<ParserConfig>
10where
11    P: AsRef<Path>,
12{
13    let file = File::open(filename)?;
14    let reader = BufReader::new(file);
15    let configs: ConfigEntries = serde_json::from_reader(reader)?;
16
17    ParserConfig::new(configs)
18}
19
20#[cfg(test)]
21mod test_json {
22    use super::*;
23    use std::collections::HashMap;
24    use crate::types::ConfigEntry;
25
26    #[test]
27    fn read_json_object() {
28        let configs: ParserConfig = read_config_file("config_object.json").unwrap();
29        let map: HashMap<String, ConfigEntry> = configs.into_inner();
30        let expected = HashMap::from([
31            ("quiet".to_string(), ConfigEntry::Flag),
32            ("q".to_string(), ConfigEntry::Alias { target: "quiet".to_string() }),
33            ("verbose".to_string(), ConfigEntry::Count),
34            ("v".to_string(), ConfigEntry::Alias { target: "verbose".to_string() }),
35            ("dry-run".to_string(), ConfigEntry::Flag),
36            ("n".to_string(), ConfigEntry::Alias { target: "dry-run".to_string() }),
37            ("j".to_string(), ConfigEntry::Int { default: Some(0) }),
38            ("browser".to_string(), ConfigEntry::Text { default: None }),
39            ("hints".to_string(), ConfigEntry::List { sep: None }),
40        ]);
41
42        assert_eq!(map, expected);
43    }
44
45    #[test]
46    fn read_json_array() {
47        let configs: ParserConfig = read_config_file("config_array.json").unwrap();
48        let map: HashMap<String, ConfigEntry> = configs.into_inner();
49        let expected = HashMap::from([
50            ("quiet".to_string(), ConfigEntry::Flag),
51            ("q".to_string(), ConfigEntry::Alias { target: "quiet".to_string() }),
52            ("verbose".to_string(), ConfigEntry::Count),
53            ("v".to_string(), ConfigEntry::Alias { target: "verbose".to_string() }),
54            ("dry-run".to_string(), ConfigEntry::Flag),
55            ("n".to_string(), ConfigEntry::Alias { target: "dry-run".to_string() }),
56            ("j".to_string(), ConfigEntry::Int { default: Some(0) }),
57        ]);
58
59        assert_eq!(map, expected);
60    }
61}
argot_cli/read_config/json.rs

argot_cli/read_config/
json.rs
