Add bson encoding and decoding test

Cargo.toml

@@ -21,3 +21,6 @@ git = "https://github.com/zonyitoo/bson-rs.git"
 [dependencies.mongoc-sys]
 path    = "mongoc-sys"
 version = "1.1.10"
+
+[dev-dependencies]
+chrono = "*"

tests/bson_encode_decode.rs

@@ -0,0 +1,39 @@
+use chrono::*;
+
+use mongo_driver::uri::Uri;
+use mongo_driver::client::ClientPool;
+
+use bson::oid::ObjectId;
+use bson::spec::BinarySubtype;
+
+// Sanity check to make sure the bson implementation
+// properly encodes and decodes when passing through
+// the database.
+
+#[test]
+fn test_bson_encode_decode() {
+    let uri    = Uri::new("mongodb://localhost:27017/").unwrap();
+    let pool   = ClientPool::new(uri, None);
+    let client = pool.pop();
+    let mut collection = client.get_collection("rust_driver_test", "bson");
+    collection.drop().unwrap_or(());
+
+    let datetime = UTC.ymd(2014, 7, 8).and_hms(9, 10, 11);
+    let document = doc! {
+        "_id" => (ObjectId::new().unwrap()),
+        "floating_point" => 10.0,
+        "string" => "a value",
+        "array" => [10, 20, 30],
+        "doc" => {"key" => 1},
+        "bool" => true,
+        "i32" => 1i32,
+        "i64" => 1i64,
+        "datetime" => datetime,
+        "binary_generic" => (BinarySubtype::Generic, vec![0, 1, 2, 3, 4])
+    };
+    assert!(collection.insert(&document, None).is_ok());
+
+    let found_document = collection.find(&doc!{}, None).unwrap().next().unwrap().unwrap();
+
+    assert_eq!(document, found_document);
+}

tests/tests.rs

@@ -1,8 +1,9 @@
 extern crate mongo_driver;
-
+extern crate chrono;
 #[macro_use]
 extern crate bson;
 
+mod bson_encode_decode;
 mod bulk_operation;
 mod client;
 mod collection;