mongodb 0.1.7

An experimental MongoDB driver written by MongoDB interns.
Documentation 
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use bson::{self, Bson};
use mongodb::{Client, ThreadedClient};
use mongodb::db::ThreadedDatabase;
use mongodb::db::options::CreateUserOptions;
use mongodb::db::roles::{AllDatabaseRole, SingleDatabaseRole, Role};

#[test]
fn create_collection() {
    let client = Client::connect("localhost", 27017).unwrap();
    let db = client.db("create_collection");
    db.drop_database().unwrap();

    // Build collections
    db.create_collection("test1", None).unwrap();
    db.create_collection("test2", None).unwrap();

    // Check for namespaces
    let mut cursor = db.list_collections_with_batch_size(None, 1)
        .expect("Failed to execute list_collections command.");;

    let results = cursor.next_n(5).unwrap();

    assert_eq!(3, results.len());

    match results[0].get("name") {
        Some(&Bson::String(ref name)) => assert_eq!("system.indexes", name),
        _ => panic!("Expected BSON string!"),
    }
    match results[1].get("name") {
        Some(&Bson::String(ref name)) => assert_eq!("test1", name),
        _ => panic!("Expected BSON string!"),
    }
    match results[2].get("name") {
        Some(&Bson::String(ref name)) => assert_eq!("test2", name),
        _ => panic!("Expected BSON string!"),
    }
}

#[test]
fn list_collections() {
    let client = Client::connect("localhost", 27017).unwrap();
    let db = client.db("list_collections");

    db.drop_database().expect("Failed to drop database");

    // Build collections
    db.collection("test").insert_one(bson::Document::new(), None)
        .expect("Failed to insert placeholder document into collection");
    db.collection("test2").insert_one(bson::Document::new(), None)
        .expect("Failed to insert placeholder document into collection");

    // Check for namespaces
    let mut cursor = db.list_collections_with_batch_size(None, 1)
        .expect("Failed to execute list_collections command.");;

    let results = cursor.next_n(5).unwrap();
    assert_eq!(3, results.len());

    match results[0].get("name") {
        Some(&Bson::String(ref name)) => assert_eq!("system.indexes", name),
        _ => panic!("Expected BSON string!"),
    };

    match results[1].get("name") {
        Some(&Bson::String(ref name)) => assert_eq!("test", name),
        _ => panic!("Expected BSON string!"),
    };

    match results[2].get("name") {
        Some(&Bson::String(ref name)) => assert_eq!("test2", name),
        _ => panic!("Expected BSON string!"),
    }
}

#[test]
fn create_and_get_users() {
    let client = Client::connect("localhost", 27017).unwrap();
    let db = client.db("create_and_get_users");
    db.drop_database().unwrap();
    db.drop_all_users(None).unwrap();

    let saghm_options = CreateUserOptions {
        custom_data: Some(doc! { "foo" => "bar" }),
        roles: vec![
            Role::Single { role: SingleDatabaseRole::DbAdmin, db: "test".to_owned() },
            Role::All(AllDatabaseRole::ReadWrite)
        ],
        write_concern: None
    };

    db.create_user("saghm", "ilikepuns!", Some(saghm_options)).unwrap();

    let kevin_options = CreateUserOptions {
        custom_data: None,
        roles: vec![Role::All(AllDatabaseRole::Read)],
        write_concern: None,
    };

    db.create_user("kevin", "ihavenosenseofhumorandthereforeihatepuns!",
                   Some(kevin_options)).unwrap();
    db.create_user("val", "ilikeangularjs!", None).unwrap();

    let user = db.get_user("saghm", None).unwrap();

    match user.get("db") {
        Some(&Bson::String(ref s)) => assert_eq!("create_and_get_users", s),
        _ => panic!("Invalid `db` specified for user 'saghm': {:?}", user.get("db"))
    };

    let data = match user.get("customData") {
        Some(&Bson::Document(ref d)) => d.clone(),
        _ => panic!("Invalid `customData` specified for user 'saghm'")
    };

    match data.get("foo") {
        Some(&Bson::String(ref s)) => assert_eq!("bar", s),
        _ => panic!("Invalid custom data for user 'saghm': {}", data)
    };

    let users = db.get_users(vec!["kevin", "val"], None).unwrap();
    assert_eq!(users.len(), 2 as usize);

    match users[0].get("user") {
        Some(&Bson::String(ref s)) => assert_eq!("kevin", s),
        _ => panic!("User isn't named 'kevin' but should be")
    };

    match users[1].get("user") {
        Some(&Bson::String(ref s)) => assert_eq!("val", s),
        _ => panic!("User isn't named 'val' but should be")
    };

    let users = db.get_all_users(false).unwrap();

    assert_eq!(users.len(), 3);

    match users[0].get("user") {
        Some(&Bson::String(ref s)) => assert_eq!("saghm", s),
        _ => panic!("User isn't named 'saghm' but should be")
    };

    match users[1].get("user") {
        Some(&Bson::String(ref s)) => assert_eq!("kevin", s),
        _ => panic!("User isn't named 'kevin' but should be")
    };

    match users[2].get("user") {
        Some(&Bson::String(ref s)) => assert_eq!("val", s),
        _ => panic!("User isn't named 'val' but should be")
    };
}