1 #![cfg(feature = "yaml")]
2 
3 use serde_derive::Deserialize;
4 
5 use std::path::PathBuf;
6 
7 use config::{Config, File, FileFormat, Map, Value};
8 use float_cmp::ApproxEqUlps;
9 
10 #[derive(Debug, Deserialize)]
11 struct Place {
12     name: String,
13     longitude: f64,
14     latitude: f64,
15     favorite: bool,
16     telephone: Option<String>,
17     reviews: u64,
18     creator: Map<String, Value>,
19     rating: Option<f32>,
20 }
21 
22 #[derive(Debug, Deserialize)]
23 struct Settings {
24     debug: f64,
25     production: Option<String>,
26     place: Place,
27     #[serde(rename = "arr")]
28     elements: Vec<String>,
29 }
30 
make() -> Config31 fn make() -> Config {
32     Config::builder()
33         .add_source(File::new("tests/Settings", FileFormat::Yaml))
34         .build()
35         .unwrap()
36 }
37 
38 #[test]
test_file()39 fn test_file() {
40     let c = make();
41 
42     // Deserialize the entire file as single struct
43     let s: Settings = c.try_deserialize().unwrap();
44 
45     assert!(s.debug.approx_eq_ulps(&1.0, 2));
46     assert_eq!(s.production, Some("false".to_string()));
47     assert_eq!(s.place.name, "Torre di Pisa");
48     assert!(s.place.longitude.approx_eq_ulps(&43.722_498_5, 2));
49     assert!(s.place.latitude.approx_eq_ulps(&10.397_052_2, 2));
50     assert!(!s.place.favorite);
51     assert_eq!(s.place.reviews, 3866);
52     assert_eq!(s.place.rating, Some(4.5));
53     assert_eq!(s.place.telephone, None);
54     assert_eq!(s.elements.len(), 10);
55     assert_eq!(s.elements[3], "4".to_string());
56     if cfg!(feature = "preserve_order") {
57         assert_eq!(
58             s.place
59                 .creator
60                 .into_iter()
61                 .collect::<Vec<(String, config::Value)>>(),
62             vec![
63                 ("name".to_string(), "John Smith".into()),
64                 ("username".into(), "jsmith".into()),
65                 ("email".into(), "jsmith@localhost".into()),
66             ]
67         );
68     } else {
69         assert_eq!(
70             s.place.creator["name"].clone().into_string().unwrap(),
71             "John Smith".to_string()
72         );
73     }
74 }
75 
76 #[test]
test_error_parse()77 fn test_error_parse() {
78     let res = Config::builder()
79         .add_source(File::new("tests/Settings-invalid", FileFormat::Yaml))
80         .build();
81 
82     let path_with_extension: PathBuf = ["tests", "Settings-invalid.yaml"].iter().collect();
83 
84     assert!(res.is_err());
85     assert_eq!(
86         res.unwrap_err().to_string(),
87         format!(
88             "while parsing a block mapping, did not find expected key at \
89          line 2 column 1 in {}",
90             path_with_extension.display()
91         )
92     );
93 }
94