Add test for log::Level deserialization

Signed-off-by: Matthias Beyer <[email protected]>

Author: matthiasbeyer

Cargo.toml

@@ -53,3 +53,4 @@ glob = "0.3"
 lazy_static = "1"
 notify = "^5.0.0"
 temp-env = "0.3.0"
+log = { version = "0.4", features = ["serde"] }

tests/log.rs

@@ -0,0 +1,28 @@
+extern crate config;
+extern crate log;
+
+#[macro_use]
+extern crate serde_derive;
+
+use config::*;
+
+#[derive(Debug, Deserialize)]
+struct Settings {
+    log: log::Level,
+}
+
+fn config(s: &str) -> Config {
+    Config::default()
+        .merge(File::from_str(s, FileFormat::Json))
+        .unwrap()
+        .clone()
+}
+
+#[test]
+fn test_load_level_uppercase() {
+    let s = r#"{ "log": "ERROR" }"#;
+    let c = config(s);
+    let l = c.get::<log::Level>("log").unwrap();
+    assert_eq!(l, log::Level::Error);
+}
+