added mock + test (as usage example)

tests/repo_contributors_test.rs

@@ -0,0 +1,71 @@
+use wiremock::{
+    matchers::{method, path},
+    Mock, MockServer, ResponseTemplate,
+};
+
+use mock_error::setup_error_handler;
+use octocrab::models::{Author, Contributor};
+use octocrab::Octocrab;
+
+/// Unit test for calls to the `/repos/OWNER/REPO/contributors` endpoint
+mod mock_error;
+
+const OWNER: &str = "XAMPPRocky";
+const REPO: &str = "octocrab";
+
+async fn setup_api(template: ResponseTemplate) -> MockServer {
+    let mock_server = MockServer::start().await;
+
+    Mock::given(method("GET"))
+        .and(path(format!("/repos/{OWNER}/{REPO}/contributors")))
+        .respond_with(template)
+        .mount(&mock_server)
+        .await;
+    setup_error_handler(
+        &mock_server,
+        "GET on /repos/OWNER/REPO/contributors not called",
+    )
+    .await;
+    mock_server
+}
+
+fn setup_octocrab(uri: &str) -> Octocrab {
+    Octocrab::builder().base_uri(uri).unwrap().build().unwrap()
+}
+
+#[tokio::test]
+async fn should_return_repo_contributors() {
+    let repo_contributors_response: Vec<Contributor> =
+        serde_json::from_str(include_str!("resources/repo_contributors.json")).unwrap();
+    let template = ResponseTemplate::new(200).set_body_json(&repo_contributors_response);
+    let mock_server = setup_api(template).await;
+    let client = setup_octocrab(&mock_server.uri());
+
+    let result = client
+        .repos(OWNER, REPO)
+        .list_contributors()
+        .anon(true)
+        .send()
+        .await;
+
+    assert!(
+        result.is_ok(),
+        "expected successful result, got error: {:#?}",
+        result
+    );
+
+    let contributors = result.unwrap();
+
+    assert!(contributors.items.len() > 0);
+
+    let Contributor {
+        author: Author { login, .. },
+        contributions,
+        ..
+    } = contributors.items.first().unwrap();
+
+    {
+        assert_eq!(login, "XAMPPRocky");
+        assert!(*contributions > 0);
+    }
+}