1 files changed, 49 insertions, 0 deletions
diff --git a/tests/legacy/merge.rs b/tests/legacy/merge.rs
new file mode 100644
index 0000000..989ae47
--- /dev/null
+++ b/tests/legacy/merge.rs
@@ -0,0 +1,49 @@
+#![cfg(feature = "toml")]
+
+extern crate config;
+
+use self::config::*;
+
+fn make() -> Config {
+    let mut c = Config::default();
+    c.merge(File::new("tests/Settings", FileFormat::Toml))
+        .unwrap();
+
+    c.merge(File::new("tests/Settings-production", FileFormat::Toml))
+        .unwrap();
+
+    c
+}
+
+#[test]
+fn test_merge() {
+    let c = make();
+
+    assert_eq!(c.get("debug").ok(), Some(false));
+    assert_eq!(c.get("production").ok(), Some(true));
+    assert_eq!(
+        c.get("place.creator.name").ok(),
+        Some("Somebody New".to_string())
+    );
+    assert_eq!(c.get("place.rating").ok(), Some(4.9));
+}
+
+#[test]
+fn test_merge_whole_config() {
+    let mut c1 = Config::default();
+    let mut c2 = Config::default();
+
+    c1.set("x", 10).unwrap();
+    c2.set("y", 25).unwrap();
+
+    assert_eq!(c1.get("x").ok(), Some(10));
+    assert_eq!(c2.get::<()>("x").ok(), None);
+
+    assert_eq!(c2.get("y").ok(), Some(25));
+    assert_eq!(c1.get::<()>("y").ok(), None);
+
+    c1.merge(c2).unwrap();
+
+    assert_eq!(c1.get("x").ok(), Some(10));
+    assert_eq!(c1.get("y").ok(), Some(25));
+}