github: Use mockall to generate MockGitHubClient implementation

Author: Turbo87

Cargo.lock

@@ -122,6 +122,7 @@ unicode-xid = "=0.2.6"
 
 [dev-dependencies]
 bytes = "=1.8.0"
+crates_io_github = { path = "crates/crates_io_github", features = ["mock"] }
 crates_io_index = { path = "crates/crates_io_index", features = ["testing"] }
 crates_io_tarball = { path = "crates/crates_io_tarball", features = ["builder"] }
 crates_io_team_repo = { path = "crates/crates_io_team_repo", features = ["mock"] }

Cargo.toml

@@ -7,9 +7,13 @@ edition = "2021"
 [lints]
 workspace = true
 
+[features]
+mock = ["dep:mockall"]
+
 [dependencies]
 anyhow = "=1.0.93"
 async-trait = "=0.1.83"
+mockall = { version = "=0.13.0", optional = true }
 oauth2 = { version = "=4.4.2", default-features = false }
 reqwest = { version = "=0.12.9", features = ["json"] }
 serde = { version = "=1.0.215", features = ["derive"] }

crates/crates_io_github/Cargo.toml

@@ -16,6 +16,7 @@ use serde::Deserialize;
 
 type Result<T> = std::result::Result<T, GitHubError>;
 
+#[cfg_attr(feature = "mock", mockall::automock)]
 #[async_trait]
 pub trait GitHubClient: Send + Sync {
     async fn current_user(&self, auth: &AccessToken) -> Result<GithubUser>;