Add some simple serde tests

Author: dtolnay

tests/serde.rs

@@ -0,0 +1,56 @@
+#[macro_use]
+extern crate bson;
+use bson::{Encoder, Decoder};
+
+extern crate serde;
+use serde::{Serialize, Deserialize};
+
+use std::collections::BTreeMap;
+
+#[test]
+fn test_ser_vec() {
+    let vec = vec![1, 2, 3];
+
+    let mut encoder = Encoder::new();
+    vec.serialize(&mut encoder).unwrap();
+
+    let expected = bson!([1, 2, 3]);
+    assert_eq!(expected, encoder.bson().unwrap());
+}
+
+#[test]
+fn test_ser_map() {
+    let mut map = BTreeMap::new();
+    map.insert("x", 0);
+    map.insert("y", 1);
+
+    let mut encoder = Encoder::new();
+    map.serialize(&mut encoder).unwrap();
+
+    let expected = bson!({ "x" => 0, "y" => 1 });
+    assert_eq!(expected, encoder.bson().unwrap());
+}
+
+#[test]
+fn test_de_vec() {
+    let bson = bson!([1, 2, 3]);
+
+    let mut decoder = Decoder::new(bson);
+    let vec = Vec::<i32>::deserialize(&mut decoder).unwrap();
+
+    let expected = vec![1, 2, 3];
+    assert_eq!(expected, vec);
+}
+
+#[test]
+fn test_de_map() {
+    let bson = bson!({ "x" => 0, "y" => 1 });
+
+    let mut decoder = Decoder::new(bson);
+    let map = BTreeMap::<String, i32>::deserialize(&mut decoder).unwrap();
+
+    let mut expected = BTreeMap::new();
+    expected.insert("x".to_string(), 0);
+    expected.insert("y".to_string(), 1);
+    assert_eq!(expected, map);
+}