1 files changed, 86 insertions, 0 deletions
diff --git a/tests/file_dhall.rs b/tests/file_dhall.rs
new file mode 100644
index 0000000..f45c854
--- /dev/null
+++ b/tests/file_dhall.rs
@@ -0,0 +1,86 @@
+#![cfg(feature = "dhall")]
+
+extern crate config;
+extern crate float_cmp;
+extern crate serde;
+
+#[macro_use]
+extern crate serde_derive;
+
+use std::collections::HashMap;
+
+use config::*;
+use float_cmp::ApproxEqUlps;
+
+#[derive(Debug, Deserialize)]
+struct Place {
+    name: String,
+    longitude: f64,
+    latitude: f64,
+    favorite: bool,
+    telephone: Option<String>,
+    reviews: u64,
+    creator: HashMap<String, Value>,
+    rating: Option<f32>,
+}
+
+#[derive(Debug, Deserialize)]
+struct Settings {
+    debug: f64,
+    production: Option<String>,
+    place: Place,
+    #[serde(rename = "arr")]
+    elements: Vec<String>,
+}
+
+fn make() -> Config {
+    Config::builder()
+        .add_source(File::new("tests/Settings", FileFormat::Dhall))
+        .build()
+        .unwrap()
+}
+
+#[test]
+fn test_file() {
+    let c = make();
+
+    // Deserialize the entire file as single struct
+    let s: Settings = c.try_into().unwrap();
+
+    assert!(s.debug.approx_eq_ulps(&1.0, 2));
+    assert_eq!(s.production, Some("false".to_string()));
+    assert_eq!(s.place.name, "Torre di Pisa");
+    assert!(s.place.longitude.approx_eq_ulps(&43.7224985, 2));
+    assert!(s.place.latitude.approx_eq_ulps(&10.3970522, 2));
+    assert_eq!(s.place.favorite, false);
+    assert_eq!(s.place.reviews, 3866);
+    assert_eq!(s.place.rating, Some(4.5));
+    assert_eq!(s.place.telephone, None);
+    assert_eq!(s.elements.len(), 10);
+    assert_eq!(s.elements[3], "4".to_string());
+    assert_eq!(
+        s.place.creator["name"].clone().into_string().unwrap(),
+        "John Smith".to_string()
+    );
+}
+
+#[test]
+fn test_dhall_vec() {
+    let c = Config::builder()
+        .add_source(File::from_str(
+            r#"
+            {
+              WASTE = ["example_dir1", "example_dir2"]
+            }
+            "#,
+            FileFormat::Dhall,
+        ))
+        .build()
+        .unwrap();
+
+    let v = c.get_array("WASTE").unwrap();
+    let mut vi = v.into_iter();
+    assert_eq!(vi.next().unwrap().into_string().unwrap(), "example_dir1");
+    assert_eq!(vi.next().unwrap().into_string().unwrap(), "example_dir2");
+    assert!(vi.next().is_none());
+}