Added test for anonymous sign in

Cargo.toml

@@ -3,7 +3,7 @@ name = "supabase-auth"
 authors = ["Eric Biggs"]
 description = "Supabase Auth implementation following the official client libraries."
 readme = "README.md"
-version = "0.10.1"
+version = "0.10.2"
 edition = "2021"
 license = "MIT OR Apache-2.0"
 keywords = ["supabase", "supabase-auth", "authentication", "auth"]

src/client.rs

@@ -242,6 +242,8 @@ impl AuthClient {
     /// named like this here. You can also pass in the same signup options
     /// that work for the other `sign_up_*` methods, but that's not required.
     ///
+    /// This method requires anonymous sign in to be enabled in your dashboard.
+    ///
     /// # Example
     /// ```
     /// let session = auth_client

src/models.rs

@@ -70,8 +70,10 @@ pub struct User {
 
 #[derive(Clone, Debug, Serialize, Deserialize, PartialEq, Default)]
 pub struct AppMetadata {
-    pub provider: String,
-    pub providers: Vec<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub provider: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub providers: Option<Vec<String>>,
 }
 
 #[derive(Clone, Debug, Serialize, Deserialize, PartialEq, Default)]

tests/client_tests.rs

@@ -413,6 +413,17 @@ async fn invite_by_email_test() {
     assert!(user.email == demo_email)
 }
 
+#[tokio::test]
+async fn sign_in_anonymously_test() {
+    let auth_client = create_test_client();
+
+    let session = auth_client.sign_in_anonymously(None).await.unwrap();
+
+    println!("{}", session.user.created_at);
+
+    assert!(!session.access_token.is_empty() && session.user.role == "authenticated")
+}
+
 #[tokio::test]
 async fn get_settings_test() {
     let auth_client = create_test_client();