diff --git a/Cargo.toml b/Cargo.toml
index 7cfb56c..1c1669f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,19 +1,21 @@
 [package]
 name = "oidc"
 version = "0.1.0"
-license = "Apache-2.0"
-description = "OpenID Connect client library using Reqwest, Biscuit, and inth-oauth2"
-readme = "README.md"
 authors = ["Zanny <lordzanny@gmail.com>"]
 categories = ["web-programming", "authentication"]
+description = "OpenID Connect client library using Reqwest, Biscuit, and inth-oauth2"
+documentation = "https://docs.rs/crate/oidc"
+edition = "2018"
 keywords = ["authentication", "client", "openid", "openid_connect", "web"]
-documentation = "https://docs.rs/crate/oidc/0.1.0"
+license = "Apache-2.0"
+readme = "README.md"
 repository = "https://gitlab.com/zanny/oidc-reqwest"
 
 [dependencies]
 base64              = "0.10"
 biscuit             = "0.1"
 chrono              = "0.4"
+failure             = "0.1"
 inth-oauth2         = "0.16"
 reqwest             = { version = "0.9", features = ["hyper-011"] }
 serde               = "1"
diff --git a/src/discovery.rs b/src/discovery.rs
index a515f0e..44b1f73 100644
--- a/src/discovery.rs
+++ b/src/discovery.rs
@@ -76,19 +76,17 @@ fn tru() -> bool {
     true
 }
 
-pub struct Discovered {
-    pub config: Config,
-}
+pub struct Discovered(pub Config);
 
 impl Provider for Discovered {
     type Lifetime = Expiring;
     type Token = Token;
     fn auth_uri(&self) -> &Url {
-        &self.config.authorization_endpoint
+        &self.0.authorization_endpoint
     }
 
     fn token_uri(&self) -> &Url {
-        &self.config.token_endpoint
+        &self.0.token_endpoint
     }
 }
 
diff --git a/src/issuer.rs b/src/issuer.rs
index 3cc5680..3e9d8ec 100644
--- a/src/issuer.rs
+++ b/src/issuer.rs
@@ -1,33 +1,63 @@
 use reqwest::Url;
 
-// TODO these should all be const, or even better, static Urls...
+const STATIC_URL_ERR_MSG: &str = "Static urls should always work!";
+
+// TODO these should all be const, or even better, sttic Urls...a
 
 pub fn google() -> Url {
-    Url::parse("https://accounts.google.com").expect("Static urls should always work!")
+    Url::parse("https://accounts.google.com").expect(STATIC_URL_ERR_MSG)
+}
+
+pub fn microsoft() -> Url {
+    Url::parse("https://login.microsoftonline.com/common/v2.0").expect(STATIC_URL_ERR_MSG)
 }
 
 pub fn paypal() -> Url {
-    Url::parse("https://www.paypalobjects.com/").expect("Static urls should always work!")
+    Url::parse("https://www.paypalobjects.com/").expect(STATIC_URL_ERR_MSG)
 }
 
 pub fn salesforce() -> Url {
-    Url::parse("https://login.salesforce.com").expect("Static urls should always work!")
+    Url::parse("https://login.salesforce.com").expect(STATIC_URL_ERR_MSG)
 }
 
-#[test]
-fn google_disco() {
-    let client = ::reqwest::Client::new();
-    ::discovery::discover(&client, google()).unwrap();
+pub fn yahoo() -> Url {
+    Url::parse("https://login.yahoo.com").expect(STATIC_URL_ERR_MSG)
 }
 
-#[test]
-fn paypal_disco() {
-    let client = ::reqwest::Client::new();
-    ::discovery::discover(&client, paypal()).unwrap();
-}
+#[cfg(test)]
+mod tests {
+    use reqwest::Client;
+    use discovery::discover;
 
-#[test]
-fn salesforce_disco() {
-    let client = ::reqwest::Client::new();
-    ::discovery::discover(&client, salesforce()).unwrap();
-}
\ No newline at end of file
+    #[test]
+    fn google_disco() {
+        let client = Client::new();
+        discover(&client, super::google()).unwrap();
+    }
+
+    #[test]
+    fn microsoft_disco() {
+        let client = Client::new();
+        let res = discover(&client, super::microsoft());
+        println!("Result: {:?}", res);
+        res.unwrap();
+    }
+
+    #[test]
+    fn paypal_disco() {
+        let client = Client::new();
+        discover(&client, super::paypal()).unwrap();
+    }
+
+    #[test]
+    fn salesforce_disco() {
+        let client = Client::new();
+        discover(&client, super::salesforce()).unwrap();
+    }
+
+    #[test]
+    fn yahoo_disco() {
+        let client = Client::new();
+        discover(&client, super::yahoo()).unwrap();
+    }
+}
diff --git a/src/lib.rs b/src/lib.rs
index 78be052..719fda6 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -39,7 +39,7 @@
 //! 
 //! let config = oidc::discovery::discover(&http, issuer)?;
 //! let jwks = oidc::discovery::jwks(&http, config.jwks_uri.clone())?;
-//! let provider = oidc::discovery::Discovered { config };
+//! let provider = oidc::discovery::Discovered(config);
 //! 
 //! let client = oidc::new(id, secret, redirect, provider, jwks);
 //! let auth_url = client.auth_url(Default::default());
@@ -124,7 +124,7 @@ impl Client {
         let client = reqwest::Client::new();
         let config = discovery::discover(&client, issuer)?;
         let jwks = discovery::jwks(&client, config.jwks_uri.clone())?;
-        let provider = Discovered { config };
+        let provider = Discovered(config);
         Ok(Self::new(id, secret, redirect, provider, jwks))
     }
 
@@ -157,7 +157,7 @@ impl Client {
 
     /// A reference to the config document of the provider obtained via discovery
     pub fn config(&self) -> &Config {
-        &self.oauth.provider.config
+        &self.oauth.provider.0
     }
 
     /// Constructs the auth_url to redirect a client to the provider. Options are... optional. Use