Add is_variant methods to all enums

Cargo.toml

@@ -48,6 +48,7 @@ static_assertions = "1.1.0"
 percent-encoding = "2.2.0"
 thiserror = "1.0.38"
 derive_deref = "1.1.1"
+is_variant = "1.0.0"
 
 [dependencies.parse_link_header]
 version = "0.3.3"

entities/Cargo.toml

@@ -13,6 +13,7 @@ edition.workspace = true
 futures = "0.3.25"
 thiserror = "1"
 static_assertions = "1"
+is_variant = "1.0.0"
 
 [dependencies.log]
 version = "0.4"

entities/src/attachment.rs

@@ -1,6 +1,7 @@
 //! Module containing everything related to media attachements.
 
 use crate::AttachmentId;
+use is_variant::IsVariant;
 use serde::{Deserialize, Serialize};
 
 /// A struct representing a media attachment.
@@ -62,7 +63,7 @@ pub struct ImageDetails {
 }
 
 /// The type of media attachment.
-#[derive(Debug, Deserialize, Serialize, Clone, Copy, PartialEq, Eq)]
+#[derive(Debug, Deserialize, Serialize, Clone, Copy, PartialEq, Eq, IsVariant)]
 pub enum MediaType {
     /// An image.
     #[serde(rename = "image")]

entities/src/error.rs

@@ -1,5 +1,7 @@
+use is_variant::IsVariant;
+
 /// Error type
-#[derive(Debug, thiserror::Error)]
+#[derive(Debug, thiserror::Error, IsVariant)]
 pub enum Error {
     #[error("unrecognized visibility '{invalid}'")]
     VisibilityParsingError { invalid: String },

entities/src/event.rs

@@ -1,7 +1,8 @@
 use crate::{notification::Notification, status::Status};
+use is_variant::IsVariant;
 use serde::{Deserialize, Serialize};
 
-#[derive(Debug, Clone, Deserialize, Serialize)]
+#[derive(Debug, Clone, Deserialize, Serialize, IsVariant)]
 /// Events that come from the /streaming/user API call
 pub enum Event {
     /// Update event

entities/src/filter.rs

@@ -1,3 +1,4 @@
+use is_variant::IsVariant;
 use serde::{de::Visitor, Deserialize, Deserializer, Serialize};
 use time::{serde::iso8601, OffsetDateTime};
 
@@ -54,7 +55,7 @@ pub struct Filter {
 }
 
 /// Represents the various types of Filter contexts
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize, IsVariant)]
 #[serde(rename_all = "lowercase")]
 pub enum FilterContext {
     /// Represents the "home" context
@@ -73,7 +74,7 @@ pub enum FilterContext {
 ///
 /// Please note that the spec requests that any unknown value be interpreted
 /// as "warn".
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, IsVariant)]
 #[serde(rename_all = "lowercase")]
 pub enum Action {
     /// Indicates filtered toots should show up, but with a warning

entities/src/notification.rs

@@ -3,6 +3,7 @@
 use crate::NotificationId;
 
 use super::{account::Account, status::Status};
+use is_variant::IsVariant;
 use serde::{Deserialize, Serialize};
 use time::{serde::iso8601, OffsetDateTime};
 
@@ -25,7 +26,7 @@ pub struct Notification {
 }
 
 /// The type of notification.
-#[derive(Debug, Clone, Copy, Deserialize, Serialize, PartialEq, Eq)]
+#[derive(Debug, Clone, Copy, Deserialize, Serialize, PartialEq, Eq, IsVariant)]
 #[serde(rename_all = "lowercase")]
 pub enum NotificationType {
     /// Someone mentioned the application client in another status.

entities/src/visibility.rs

@@ -1,8 +1,9 @@
+use is_variant::IsVariant;
 use serde::Deserialize;
 use serde::Serialize;
 
 /// The visibility of a status.
-#[derive(Clone, Copy, Debug, Deserialize, Serialize, PartialEq, Eq)]
+#[derive(Clone, Copy, Debug, Deserialize, Serialize, PartialEq, Eq, IsVariant)]
 #[serde(rename_all = "lowercase")]
 pub enum Visibility {
     /// A Direct message to a user
@@ -36,3 +37,17 @@ impl std::str::FromStr for Visibility {
         }
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use std::str::FromStr;
+
+    use super::*;
+
+    #[test]
+    fn test_from_str() {
+        assert!(Visibility::from_str("invalid")
+            .expect_err("parsed invalid?")
+            .is_visibility_parsing_error());
+    }
+}

src/errors.rs

@@ -3,6 +3,7 @@ use std::{error, fmt, io::Error as IoError, num::TryFromIntError};
 
 #[cfg(feature = "env")]
 use envy::Error as EnvyError;
+use is_variant::IsVariant;
 use reqwest::{header::ToStrError as HeaderStrError, Error as HttpError, StatusCode};
 use serde::Deserialize;
 use serde_json::Error as SerdeError;
@@ -17,7 +18,7 @@ use url::ParseError as UrlError;
 pub type Result<T> = ::std::result::Result<T, Error>;
 
 /// enum of possible errors encountered using the mastodon API.
-#[derive(Debug, thiserror::Error)]
+#[derive(Debug, thiserror::Error, IsVariant)]
 pub enum Error {
     /// Error from the Mastodon API. This typically means something went
     /// wrong with your authentication or data.

src/scopes.rs

@@ -6,6 +6,7 @@ use std::{
     str::FromStr,
 };
 
+use is_variant::IsVariant;
 use serde::ser::{Serialize, Serializer};
 
 use crate::errors::Error;
@@ -257,19 +258,16 @@ impl fmt::Display for Scopes {
 /// 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, Eq, Hash, Serialize)]
-enum Scope {
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Serialize, IsVariant)]
+#[serde(rename_all = "lowercase")]
+pub enum Scope {
     /// Read only permissions.
-    #[serde(rename = "read")]
     Read(Option<Read>),
     /// Write only permissions.
-    #[serde(rename = "write")]
     Write(Option<Write>),
     /// Only permission to add and remove followers.
-    #[serde(rename = "follow")]
     Follow,
     /// Push permissions
-    #[serde(rename = "push")]
     Push,
 }
 
@@ -355,7 +353,7 @@ impl Default for Scope {
 }
 
 /// Represents the granular "read:___" oauth scopes
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Serialize)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Serialize, IsVariant)]
 pub enum Read {
     /// Accounts
     #[serde(rename = "accounts")]
@@ -450,7 +448,7 @@ impl fmt::Display for Read {
 }
 
 /// Represents the granular "write:___" oauth scopes
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Serialize)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Serialize, IsVariant)]
 pub enum Write {
     /// Accounts
     #[serde(rename = "accounts")]