feat(scopes): Implement granular OAuth scopes

BREAKING CHANGE: Applications that use the `Scopes` data structure will
have minor changes to make

Closes #44

4 files changed, 641 insertions, 69 deletions

diff --git a/examples/register.rs b/examples/register.rs
index f375921..7b581ee 100644
--- a/examples/register.rs
+++ b/examples/register.rs
@@ -31,7 +31,7 @@ pub fn register() -> Result<Mastodon, Box<Error>> {
     let website = read_line("Please enter your mastodon instance url:")?;
     let registration = Registration::new(website.trim())
         .client_name("elefren-examples")
-        .scopes(Scopes::All)
+        .scopes(Scopes::all())
         .website("https://github.com/pwoolcoc/elefren")
         .build()?;
     let url = registration.authorize_url()?;
diff --git a/src/apps.rs b/src/apps.rs
index c1bd06e..f9e1585 100644
--- a/src/apps.rs
+++ b/src/apps.rs
@@ -2,8 +2,8 @@ use std::borrow::Cow;
 
 use try_from::TryInto;
 
-use scopes::Scopes;
 use errors::{Error, Result};
+use scopes::Scopes;
 
 /// Represents an application that can be registered with a mastodon instance
 #[derive(Clone, Debug, Default, Serialize, PartialEq)]
@@ -37,19 +37,19 @@ impl App {
     /// ```
     /// # extern crate elefren;
     /// # use elefren::Error;
-    /// use elefren::apps::{App, Scopes};
+    /// use elefren::{apps::App, scopes::Scopes};
     ///
     /// # fn main() -> Result<(), Error> {
     /// let mut builder = App::builder();
     /// builder.client_name("elefren-test");
     /// let app = builder.build()?;
     /// let scopes = app.scopes();
-    /// assert_eq!(scopes, Scopes::Read);
+    /// assert_eq!(scopes, &Scopes::read_all());
     /// #   Ok(())
     /// # }
     /// ```
-    pub fn scopes(&self) -> Scopes {
-        self.scopes
+    pub fn scopes(&self) -> &Scopes {
+        &self.scopes
     }
 }
 
@@ -98,7 +98,7 @@ impl<'a> AppBuilder<'a> {
 
     /// Permission scope of the application.
     ///
-    /// IF none is specified, the default is Scopes::Read
+    /// IF none is specified, the default is Scopes::read_all()
     pub fn scopes(&mut self, scopes: Scopes) -> &mut Self {
         self.scopes = Some(scopes);
         self
@@ -123,7 +123,7 @@ impl<'a> AppBuilder<'a> {
                 .redirect_uris
                 .unwrap_or_else(|| "urn:ietf:wg:oauth:2.0:oob".into())
                 .into(),
-            scopes: self.scopes.unwrap_or_else(|| Scopes::Read),
+            scopes: self.scopes.unwrap_or_else(|| Scopes::read_all()),
             website: self.website.map(|s| s.into()),
         })
     }
@@ -158,9 +158,9 @@ mod tests {
     #[test]
     fn test_app_scopes() {
         let mut builder = App::builder();
-        builder.client_name("test").scopes(Scopes::All);
+        builder.client_name("test").scopes(Scopes::all());
         let app = builder.build().expect("Couldn't build App");
-        assert_eq!(app.scopes(), Scopes::All);
+        assert_eq!(app.scopes(), &Scopes::all());
     }
 
     #[test]
@@ -168,7 +168,7 @@ mod tests {
         let mut builder = AppBuilder::new();
         builder.client_name("foo-test");
         builder.redirect_uris("http://example.com");
-        builder.scopes(Scopes::ReadWrite);
+        builder.scopes(Scopes::read_all() | Scopes::write_all());
         builder.website("https://example.com");
         let app = builder.build().expect("Couldn't build App");
         assert_eq!(
@@ -176,7 +176,7 @@ mod tests {
             App {
                 client_name: "foo-test".to_string(),
                 redirect_uris: "http://example.com".to_string(),
-                scopes: Scopes::ReadWrite,
+                scopes: Scopes::read_all() | Scopes::write_all(),
                 website: Some("https://example.com".to_string()),
             }
         );
@@ -195,7 +195,7 @@ mod tests {
         builder
             .website("https://example.com")
             .redirect_uris("https://example.com")
-            .scopes(Scopes::All);
+            .scopes(Scopes::all());
         builder.build().expect("no client-name");
     }
 
@@ -204,7 +204,7 @@ mod tests {
         let app = App {
             client_name: "foo-test".to_string(),
             redirect_uris: "http://example.com".to_string(),
-            scopes: Scopes::All,
+            scopes: Scopes::all(),
             website: None,
         };
         let expected = app.clone();
@@ -218,11 +218,11 @@ mod tests {
         builder
             .client_name("foo-test")
             .redirect_uris("http://example.com")
-            .scopes(Scopes::All);
+            .scopes(Scopes::all());
         let expected = App {
             client_name: "foo-test".to_string(),
             redirect_uris: "http://example.com".to_string(),
-            scopes: Scopes::All,
+            scopes: Scopes::all(),
             website: None,
         };
         let result = builder
diff --git a/src/registration.rs b/src/registration.rs
index 2a5f8d7..d09c180 100644
--- a/src/registration.rs
+++ b/src/registration.rs
@@ -4,8 +4,8 @@ use reqwest::{Client, RequestBuilder, Response};
 use try_from::TryInto;
 
 use apps::{App, AppBuilder};
-use scopes::Scopes;
 use http_send::{HttpSend, HttpSender};
+use scopes::Scopes;
 use Data;
 use Error;
 use Mastodon;
@@ -136,7 +136,7 @@ impl<'a, H: HttpSend> Registration<'a, H> {
             client_id: oauth.client_id,
             client_secret: oauth.client_secret,
             redirect: oauth.redirect_uri,
-            scopes: app.scopes(),
+            scopes: app.scopes().clone(),
             http_sender: self.http_sender.clone(),
         })
     }
@@ -171,7 +171,7 @@ impl<'a, H: HttpSend> Registration<'a, H> {
             client_id: oauth.client_id,
             client_secret: oauth.client_secret,
             redirect: oauth.redirect_uri,
-            scopes: app.scopes(),
+            scopes: app.scopes().clone(),
             http_sender: self.http_sender.clone(),
         })
     }
@@ -286,10 +286,10 @@ mod tests {
     #[test]
     fn test_set_scopes() {
         let mut r = Registration::new("https://example.com");
-        r.scopes(Scopes::All);
+        r.scopes(Scopes::all());
 
         assert_eq!(r.base, "https://example.com".to_string());
-        assert_eq!(&mut r.app_builder, AppBuilder::new().scopes(Scopes::All));
+        assert_eq!(&mut r.app_builder, AppBuilder::new().scopes(Scopes::all()));
     }
 
     #[test]
diff --git a/src/scopes.rs b/src/scopes.rs
index 282d1f9..07e9828 100644
--- a/src/scopes.rs
+++ b/src/scopes.rs
@@ -1,82 +1,619 @@
-use std::fmt;
+use std::{
+    cmp::{Ordering, PartialEq, PartialOrd},
+    collections::HashSet,
+    fmt,
+    ops::BitOr,
+};
+
+use serde::ser::{Serialize, Serializer};
+
+/// Represents a set of OAuth scopes
+///
+/// # Example
+///
+/// ```rust
+/// use elefren::prelude::*;
+///
+/// let read = Scopes::read_all();
+/// let write = Scopes::write_all();
+/// let follow = Scopes::follow();
+/// let all = read | write | follow;
+/// ```
+#[derive(Clone)]
+pub struct Scopes {
+    scopes: HashSet<Scope>,
+}
+
+impl Serialize for Scopes {
+    fn serialize<S>(&self, serializer: S) -> ::std::result::Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        let repr = format!("{}", self);
+        serializer.serialize_str(&repr)
+    }
+}
+
+impl Scopes {
+    /// Represents all available oauth scopes: "read write follow push"
+    ///
+    /// ```
+    /// # extern crate elefren;
+    /// # use std::error::Error;
+    /// use elefren::scopes::Scopes;
+    ///
+    /// # fn main() -> Result<(), Box<Error>> {
+    /// let scope = Scopes::all();
+    /// assert_eq!(&format!("{}", scope), "read write follow push");
+    /// #   Ok(())
+    /// # }
+    /// ```
+    pub fn all() -> Scopes {
+        Scopes::read_all() | Scopes::write_all() | Scopes::follow() | Scopes::push()
+    }
+
+    /// Represents the full "read" scope
+    ///
+    /// ```
+    /// # extern crate elefren;
+    /// # use std::error::Error;
+    /// use elefren::scopes::Scopes;
+    ///
+    /// # fn main() -> Result<(), Box<Error>> {
+    /// let scope = Scopes::read_all();
+    /// assert_eq!(&format!("{}", scope), "read");
+    /// #   Ok(())
+    /// # }
+    /// ```
+    pub fn read_all() -> Scopes {
+        Scopes::_read(None)
+    }
+
+    /// Represents a specific "read:___" scope
+    ///
+    /// ```
+    /// # extern crate elefren;
+    /// # use std::error::Error;
+    /// use elefren::scopes::{Read, Scopes};
+    ///
+    /// # fn main() -> Result<(), Box<Error>> {
+    /// let scope = Scopes::read(Read::Accounts);
+    /// assert_eq!(&format!("{}", scope), "read:accounts");
+    /// #   Ok(())
+    /// # }
+    /// ```
+    pub fn read(subscope: Read) -> Scopes {
+        Scopes::_read(Some(subscope))
+    }
+
+    /// Represents the full "write" scope
+    ///
+    /// ```
+    /// # extern crate elefren;
+    /// # use std::error::Error;
+    /// use elefren::scopes::Scopes;
+    ///
+    /// # fn main() -> Result<(), Box<Error>> {
+    /// let scope = Scopes::write_all();
+    /// assert_eq!(&format!("{}", scope), "write");
+    /// #   Ok(())
+    /// # }
+    /// ```
+    pub fn write_all() -> Scopes {
+        Scopes::_write(None)
+    }
+
+    /// Represents a specific "write:___" scope
+    ///
+    /// ```
+    /// # extern crate elefren;
+    /// # use std::error::Error;
+    /// use elefren::scopes::{Scopes, Write};
+    ///
+    /// # fn main() -> Result<(), Box<Error>> {
+    /// let scope = Scopes::write(Write::Accounts);
+    /// assert_eq!(&format!("{}", scope), "write:accounts");
+    /// #   Ok(())
+    /// # }
+    /// ```
+    pub fn write(subscope: Write) -> Scopes {
+        Scopes::_write(Some(subscope))
+    }
+
+    /// Represents the "follow" scope
+    ///
+    /// ```
+    /// # extern crate elefren;
+    /// # use std::error::Error;
+    /// use elefren::scopes::Scopes;
+    ///
+    /// # fn main() -> Result<(), Box<Error>> {
+    /// let scope = Scopes::follow();
+    /// assert_eq!(&format!("{}", scope), "follow");
+    /// #   Ok(())
+    /// # }
+    /// ```
+    pub fn follow() -> Scopes {
+        Scopes::new(Scope::Follow)
+    }
+
+    /// Represents the full "push" scope
+    ///
+    /// ```
+    /// # extern crate elefren;
+    /// # use std::error::Error;
+    /// use elefren::scopes::Scopes;
+    ///
+    /// # fn main() -> Result<(), Box<Error>> {
+    /// let scope = Scopes::push();
+    /// assert_eq!(&format!("{}", scope), "push");
+    /// #   Ok(())
+    /// # }
+    /// ```
+    pub fn push() -> Scopes {
+        Scopes::new(Scope::Push)
+    }
+
+    /// Combines 2 scopes together
+    ///
+    /// # Example
+    ///
+    /// ```rust
+    /// use elefren::prelude::*;
+    ///
+    /// let read = Scopes::read_all();
+    /// let write = Scopes::write_all();
+    /// let read_write = read.and(write);
+    /// ```
+    pub fn and(self, other: Scopes) -> Scopes {
+        let newset: HashSet<_> = self
+            .scopes
+            .union(&other.scopes)
+            .into_iter()
+            .map(|s| *s)
+            .collect();
+        Scopes {
+            scopes: newset,
+        }
+    }
+
+    fn _write(subscope: Option<Write>) -> Scopes {
+        Scopes::new(Scope::Write(subscope))
+    }
+
+    fn _read(subscope: Option<Read>) -> Scopes {
+        Scopes::new(Scope::Read(subscope))
+    }
+
+    fn new(scope: Scope) -> Scopes {
+        let mut set = HashSet::new();
+        set.insert(scope);
+        Scopes {
+            scopes: set,
+        }
+    }
+}
+
+impl BitOr for Scopes {
+    type Output = Scopes;
+
+    fn bitor(self, other: Scopes) -> Self::Output {
+        self.and(other)
+    }
+}
+
+impl PartialEq for Scopes {
+    fn eq(&self, other: &Scopes) -> bool {
+        self.scopes
+            .symmetric_difference(&other.scopes)
+            .next()
+            .is_none()
+    }
+}
+
+impl Default for Scopes {
+    fn default() -> Scopes {
+        Scopes::read_all()
+    }
+}
+
+impl fmt::Debug for Scopes {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "[")?;
+        for scope in &self.scopes {
+            write!(f, "{:?}", &scope)?;
+        }
+        Ok(write!(f, "]")?)
+    }
+}
+
+impl fmt::Display for Scopes {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        let mut start = true;
+        let scopes = {
+            let mut scopes = self.scopes.iter().collect::<Vec<_>>();
+            scopes.sort();
+            scopes
+        };
+        for scope in &scopes {
+            if !start {
+                write!(f, " ")?;
+            } else {
+                start = false;
+            }
+            write!(f, "{}", &scope)?;
+        }
+        Ok(())
+    }
+}
 
 /// Permission scope of the application.
 /// [Details on what each permission provides][1]
 /// [1]: https://github.com/tootsuite/documentation/blob/master/Using-the-API/OAuth-details.md)
-#[derive(Debug, Clone, Copy, PartialEq, Hash, Serialize)]
-pub enum Scopes {
-    /// All Permissions, equivalent to `read write follow`
-    #[serde(rename = "read write follow")]
-    All,
-    /// Only permission to add and remove followers.
-    #[serde(rename = "follow")]
-    Follow,
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Serialize)]
+enum Scope {
     /// Read only permissions.
     #[serde(rename = "read")]
-    Read,
-    /// Read & Follow permissions.
-    #[serde(rename = "read follow")]
-    ReadFollow,
-    /// Read & Write permissions.
-    #[serde(rename = "read write")]
-    ReadWrite,
+    Read(Option<Read>),
     /// Write only permissions.
     #[serde(rename = "write")]
-    Write,
-    /// Write & Follow permissions.
-    #[serde(rename = "write follow")]
-    WriteFollow,
+    Write(Option<Write>),
+    /// Only permission to add and remove followers.
+    #[serde(rename = "follow")]
+    Follow,
+    /// Push permissions
+    #[serde(rename = "push")]
+    Push,
 }
 
-impl fmt::Display for Scopes {
+impl PartialOrd for Scope {
+    fn partial_cmp(&self, other: &Scope) -> Option<Ordering> {
+        Some(self.cmp(other))
+    }
+}
+
+impl Ord for Scope {
+    fn cmp(&self, other: &Scope) -> Ordering {
+        match (*self, *other) {
+            (Scope::Read(None), Scope::Read(None)) => Ordering::Equal,
+            (Scope::Read(None), Scope::Read(Some(..))) => Ordering::Less,
+            (Scope::Read(Some(..)), Scope::Read(None)) => Ordering::Greater,
+            (Scope::Read(Some(ref a)), Scope::Read(Some(ref b))) => a.cmp(b),
+
+            (Scope::Write(None), Scope::Write(None)) => Ordering::Equal,
+            (Scope::Write(None), Scope::Write(Some(..))) => Ordering::Less,
+            (Scope::Write(Some(..)), Scope::Write(None)) => Ordering::Greater,
+            (Scope::Write(Some(ref a)), Scope::Write(Some(ref b))) => a.cmp(b),
+
+            (Scope::Read(..), Scope::Write(..)) => Ordering::Less,
+            (Scope::Read(..), Scope::Follow) => Ordering::Less,
+            (Scope::Read(..), Scope::Push) => Ordering::Less,
+
+            (Scope::Write(..), Scope::Read(..)) => Ordering::Greater,
+            (Scope::Write(..), Scope::Follow) => Ordering::Less,
+            (Scope::Write(..), Scope::Push) => Ordering::Less,
+
+            (Scope::Follow, Scope::Read(..)) => Ordering::Greater,
+            (Scope::Follow, Scope::Write(..)) => Ordering::Greater,
+            (Scope::Follow, Scope::Follow) => Ordering::Equal,
+            (Scope::Follow, Scope::Push) => Ordering::Less,
+
+            (Scope::Push, Scope::Push) => Ordering::Equal,
+            (Scope::Push, _) => Ordering::Greater,
+        }
+    }
+}
+
+impl fmt::Display for Scope {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        use self::Scope::*;
+        let s = match *self {
+            Read(Some(ref r)) => return fmt::Display::fmt(r, f),
+            Read(None) => "read",
+            Write(Some(ref w)) => return fmt::Display::fmt(w, f),
+            Write(None) => "write",
+            Follow => "follow",
+            Push => "push",
+        };
+        write!(f, "{}", s)
+    }
+}
+
+impl Default for Scope {
+    fn default() -> Self {
+        Scope::Read(None)
+    }
+}
+
+/// Represents the granular "read:___" oauth scopes
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Serialize)]
+pub enum Read {
+    /// Accounts
+    #[serde(rename = "accounts")]
+    Accounts,
+    /// Blocks
+    #[serde(rename = "blocks")]
+    Blocks,
+    /// Favourites
+    #[serde(rename = "favourites")]
+    Favourites,
+    /// Filters
+    #[serde(rename = "filters")]
+    Filters,
+    /// Follows
+    #[serde(rename = "follows")]
+    Follows,
+    /// Lists
+    #[serde(rename = "lists")]
+    Lists,
+    /// Mutes
+    #[serde(rename = "mutes")]
+    Mutes,
+    /// Notifications
+    #[serde(rename = "notifications")]
+    Notifications,
+    /// Reports
+    #[serde(rename = "reports")]
+    Reports,
+    /// Search
+    #[serde(rename = "search")]
+    Search,
+    /// Statuses
+    #[serde(rename = "statuses")]
+    Statuses,
+}
+
+impl PartialOrd for Read {
+    fn partial_cmp(&self, other: &Read) -> Option<Ordering> {
+        Some(self.cmp(other))
+    }
+}
+
+impl Ord for Read {
+    fn cmp(&self, other: &Read) -> Ordering {
+        let a = format!("{:?}", self);
+        let b = format!("{:?}", other);
+        a.cmp(&b)
+    }
+}
+
+impl fmt::Display for Read {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        use self::Scopes::*;
         write!(
             f,
-            "{}",
+            "read:{}",
             match *self {
-                All => "read%20write%20follow",
-                Follow => "follow",
-                Read => "read",
-                ReadFollow => "read%20follow",
-                ReadWrite => "read%20write",
-                Write => "write",
-                WriteFollow => "write%20follow",
+                Read::Accounts => "accounts",
+                Read::Blocks => "blocks",
+                Read::Favourites => "favourites",
+                Read::Filters => "filters",
+                Read::Follows => "follows",
+                Read::Lists => "lists",
+                Read::Mutes => "mutes",
+                Read::Notifications => "notifications",
+                Read::Reports => "reports",
+                Read::Search => "search",
+                Read::Statuses => "statuses",
             }
         )
     }
 }
 
-impl Default for Scopes {
-    fn default() -> Self {
-        Scopes::Read
+/// Represents the granular "write:___" oauth scopes
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Serialize)]
+pub enum Write {
+    /// Accounts
+    #[serde(rename = "accounts")]
+    Accounts,
+    /// Blocks
+    #[serde(rename = "blocks")]
+    Blocks,
+    /// Favourites
+    #[serde(rename = "favourites")]
+    Favourites,
+    /// Filters
+    #[serde(rename = "filters")]
+    Filters,
+    /// Follows
+    #[serde(rename = "follows")]
+    Follows,
+    /// Lists
+    #[serde(rename = "lists")]
+    Lists,
+    /// Media
+    #[serde(rename = "media")]
+    Media,
+    /// Mutes
+    #[serde(rename = "mutes")]
+    Mutes,
+    /// Notifications
+    #[serde(rename = "notifications")]
+    Notifications,
+    /// Reports
+    #[serde(rename = "reports")]
+    Reports,
+    /// Statuses
+    #[serde(rename = "statuses")]
+    Statuses,
+}
+
+impl PartialOrd for Write {
+    fn partial_cmp(&self, other: &Write) -> Option<Ordering> {
+        Some(self.cmp(other))
+    }
+}
+
+impl Ord for Write {
+    fn cmp(&self, other: &Write) -> Ordering {
+        let a = format!("{:?}", self);
+        let b = format!("{:?}", other);
+        a.cmp(&b)
+    }
+}
+
+impl fmt::Display for Write {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(
+            f,
+            "write:{}",
+            match *self {
+                Write::Accounts => "accounts",
+                Write::Blocks => "blocks",
+                Write::Favourites => "favourites",
+                Write::Filters => "filters",
+                Write::Follows => "follows",
+                Write::Lists => "lists",
+                Write::Media => "media",
+                Write::Mutes => "mutes",
+                Write::Notifications => "notifications",
+                Write::Reports => "reports",
+                Write::Statuses => "statuses",
+            }
+        )
     }
 }
 
 #[cfg(test)]
 mod tests {
     use super::*;
+    use serde_json;
 
     #[test]
-    fn test_scopes_display() {
+    fn test_write_cmp() {
+        let tests = [
+            (Write::Accounts, Write::Blocks),
+            (Write::Blocks, Write::Favourites),
+            (Write::Favourites, Write::Filters),
+            (Write::Filters, Write::Follows),
+            (Write::Follows, Write::Lists),
+            (Write::Lists, Write::Media),
+            (Write::Media, Write::Mutes),
+            (Write::Mutes, Write::Notifications),
+            (Write::Notifications, Write::Reports),
+            (Write::Reports, Write::Statuses),
+        ];
+
+        for (a, b) in &tests {
+            assert!(a < b);
+            assert!(b > a);
+        }
+    }
+
+    #[test]
+    fn test_read_cmp() {
+        let tests = [
+            (Read::Accounts, Read::Blocks),
+            (Read::Blocks, Read::Favourites),
+            (Read::Favourites, Read::Filters),
+            (Read::Filters, Read::Follows),
+            (Read::Follows, Read::Lists),
+            (Read::Lists, Read::Mutes),
+            (Read::Mutes, Read::Notifications),
+            (Read::Notifications, Read::Reports),
+            (Read::Reports, Read::Search),
+            (Read::Search, Read::Statuses),
+        ];
+        for (a, b) in &tests {
+            assert!(a < b);
+            assert!(b > a);
+        }
+    }
+
+    #[test]
+    fn test_scope_cmp() {
+        let tests = [
+            (Scope::Read(None), Scope::Read(Some(Read::Accounts))),
+            (Scope::Read(None), Scope::Read(Some(Read::Blocks))),
+            (Scope::Read(None), Scope::Read(Some(Read::Favourites))),
+            (Scope::Read(None), Scope::Read(Some(Read::Filters))),
+            (Scope::Read(None), Scope::Read(Some(Read::Follows))),
+            (Scope::Read(None), Scope::Read(Some(Read::Lists))),
+            (Scope::Read(None), Scope::Read(Some(Read::Mutes))),
+            (Scope::Read(None), Scope::Read(Some(Read::Notifications))),
+            (Scope::Read(None), Scope::Read(Some(Read::Reports))),
+            (Scope::Read(None), Scope::Read(Some(Read::Search))),
+            (Scope::Read(None), Scope::Read(Some(Read::Statuses))),
+            (Scope::Read(Some(Read::Statuses)), Scope::Write(None)),
+            (Scope::Read(Some(Read::Mutes)), Scope::Follow),
+            (Scope::Read(None), Scope::Push),
+            (Scope::Write(None), Scope::Write(Some(Write::Accounts))),
+            (Scope::Write(None), Scope::Write(Some(Write::Blocks))),
+            (Scope::Write(None), Scope::Write(Some(Write::Favourites))),
+            (Scope::Write(None), Scope::Write(Some(Write::Filters))),
+            (Scope::Write(None), Scope::Write(Some(Write::Follows))),
+            (Scope::Write(None), Scope::Write(Some(Write::Lists))),
+            (Scope::Write(None), Scope::Write(Some(Write::Media))),
+            (Scope::Write(None), Scope::Write(Some(Write::Mutes))),
+            (Scope::Write(None), Scope::Write(Some(Write::Notifications))),
+            (Scope::Write(None), Scope::Write(Some(Write::Reports))),
+            (Scope::Write(None), Scope::Write(Some(Write::Statuses))),
+            (Scope::Write(Some(Write::Statuses)), Scope::Follow),
+            (Scope::Write(Some(Write::Follows)), Scope::Push),
+        ];
+
+        for (a, b) in &tests {
+            assert!(a < b);
+        }
+    }
+
+    #[test]
+    fn test_scope_display() {
         let values = [
-            Scopes::All,
-            Scopes::Follow,
-            Scopes::Read,
-            Scopes::ReadFollow,
-            Scopes::ReadWrite,
-            Scopes::Write,
-            Scopes::WriteFollow,
+            Scope::Read(None),
+            Scope::Read(Some(Read::Accounts)),
+            Scope::Read(Some(Read::Blocks)),
+            Scope::Read(Some(Read::Favourites)),
+            Scope::Read(Some(Read::Filters)),
+            Scope::Read(Some(Read::Follows)),
+            Scope::Read(Some(Read::Lists)),
+            Scope::Read(Some(Read::Mutes)),
+            Scope::Read(Some(Read::Notifications)),
+            Scope::Read(Some(Read::Reports)),
+            Scope::Read(Some(Read::Search)),
+            Scope::Read(Some(Read::Statuses)),
+            Scope::Write(None),
+            Scope::Write(Some(Write::Accounts)),
+            Scope::Write(Some(Write::Blocks)),
+            Scope::Write(Some(Write::Favourites)),
+            Scope::Write(Some(Write::Filters)),
+            Scope::Write(Some(Write::Follows)),
+            Scope::Write(Some(Write::Lists)),
+            Scope::Write(Some(Write::Media)),
+            Scope::Write(Some(Write::Mutes)),
+            Scope::Write(Some(Write::Notifications)),
+            Scope::Write(Some(Write::Reports)),
+            Scope::Write(Some(Write::Statuses)),
+            Scope::Follow,
+            Scope::Push,
         ];
 
         let expecteds = [
-            "read%20write%20follow".to_string(),
-            "follow".to_string(),
             "read".to_string(),
-            "read%20follow".to_string(),
-            "read%20write".to_string(),
+            "read:accounts".to_string(),
+            "read:blocks".to_string(),
+            "read:favourites".to_string(),
+            "read:filters".to_string(),
+            "read:follows".to_string(),
+            "read:lists".to_string(),
+            "read:mutes".to_string(),
+            "read:notifications".to_string(),
+            "read:reports".to_string(),
+            "read:search".to_string(),
+            "read:statuses".to_string(),
             "write".to_string(),
-            "write%20follow".to_string(),
+            "write:accounts".to_string(),
+            "write:blocks".to_string(),
+            "write:favourites".to_string(),
+            "write:filters".to_string(),
+            "write:follows".to_string(),
+            "write:lists".to_string(),
+            "write:media".to_string(),
+            "write:mutes".to_string(),
+            "write:notifications".to_string(),
+            "write:reports".to_string(),
+            "write:statuses".to_string(),
+            "follow".to_string(),
+            "push".to_string(),
         ];
 
         let tests = values.into_iter().zip(expecteds.into_iter());
@@ -89,7 +626,42 @@ mod tests {
 
     #[test]
     fn test_scopes_default() {
-        let default: Scopes = Default::default();
-        assert_eq!(default, Scopes::Read);
+        let default: Scope = Default::default();
+        assert_eq!(default, Scope::Read(None));
+    }
+
+    #[test]
+    fn test_scopes_display() {
+        let tests = [
+            (
+                Scopes::read(Read::Accounts) | Scopes::follow(),
+                "read:accounts follow",
+            ),
+            (
+                Scopes::read(Read::Follows) | Scopes::read(Read::Accounts) | Scopes::write_all(),
+                "read:accounts read:follows write",
+            ),
+        ];
+
+        for (a, b) in &tests {
+            assert_eq!(&format!("{}", a), b);
+        }
+    }
+
+    #[test]
+    fn test_scopes_serialize() {
+        let tests = [
+            (
+                Scopes::read_all() | Scopes::write(Write::Notifications) | Scopes::follow(),
+                "read write:notifications follow",
+            ),
+            (Scopes::follow() | Scopes::push(), "follow push"),
+        ];
+
+        for (a, b) in &tests {
+            let ser = serde_json::to_string(&a).expect("Couldn't serialize Scopes");
+            let expected = format!("\"{}\"", b);
+            assert_eq!(&ser, &expected);
+        }
     }
 }