add compat mod for backward compatibility

mongodb · May 28, 2017 · 383c472 · 383c472
1 parent 21a5a77
commit 383c472
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Showing 3 changed files with 19 additions and 1 deletion.
diff --git a/src/bson.rs b/src/bson.rs
@@ -85,7 +85,7 @@ impl Debug for Bson {
             &Bson::FloatingPoint(p) => write!(f, "FloatingPoint({:?})", p),
             &Bson::String(ref s) => write!(f, "String({:?})", s),
             &Bson::Array(ref vec) => write!(f, "Array({:?})", vec),
-            &Bson::Document(ref doc) => write!(f, "Document({})", doc),
+            &Bson::Document(ref doc) => write!(f, "Document({:?})", doc),
             &Bson::Boolean(b) => write!(f, "Boolean({:?})", b),
             &Bson::Null => write!(f, "Null"),
             &Bson::RegExp(ref pat, ref opt) => write!(f, "RegExp(/{:?}/{:?})", pat, opt),

diff --git a/src/lib.rs b/src/lib.rs
@@ -68,3 +68,4 @@ mod bson;
 mod encoder;
 mod decoder;
 pub mod ordered;
+pub mod compat;
diff --git a/tests/serde.rs b/tests/serde.rs
@@ -80,3 +80,20 @@ fn test_ser_datetime() {
     let xfoo: Foo = bson::from_bson(x).unwrap();
     assert_eq!(xfoo, foo);
 }
+
+
+#[test]
+fn test_compat_u2f() {
+    #[derive(Serialize, Deserialize, Eq, PartialEq, Debug)]
+    struct Foo {
+        #[serde(with = "bson::compat::u2f")]
+        x: u32
+    }
+
+    let foo = Foo { x: 20 };
+    let b = bson::to_bson(&foo).unwrap();
+    assert_eq!(b, Bson::Document(doc! { "x" => (Bson::FloatingPoint(20.0)) }));
+
+    let de_foo = bson::from_bson::<Foo>(b).unwrap();
+    assert_eq!(de_foo, foo);
+}