feat: add set_admin function

pool/src/contract.rs

@@ -39,14 +39,23 @@ pub trait Pool {
         usdc_id: Address,
     );
 
+    /// (Admin only) Set a new address as the admin of this pool
+    ///
+    /// ### Arguments
+    /// * `new_admin` - The new admin address
+    ///
+    /// ### Panics
+    /// If the caller is not the admin
+    fn set_admin(e: Env, new_admin: Address);
+
     /// (Admin only) Update the pool
     ///
     /// ### Arguments
     /// * `backstop_take_rate` - The new take rate for the backstop
     ///
     /// ### Panics
     /// If the caller is not the admin
-    fn update_pool(e: Env, backstiop_take_rate: u64);
+    fn update_pool(e: Env, backstop_take_rate: u64);
 
     /// (Admin only) Initialize a reserve in the pool
     ///
@@ -233,6 +242,17 @@ impl Pool for PoolContract {
         );
     }
 
+    fn set_admin(e: Env, new_admin: Address) {
+        storage::bump_instance(&e);
+        let admin = storage::get_admin(&e);
+        admin.require_auth();
+
+        storage::set_admin(&e, &new_admin);
+
+        e.events()
+            .publish((Symbol::new(&e, "set_admin"), admin), new_admin);
+    }
+
     fn update_pool(e: Env, backstop_take_rate: u64) {
         storage::bump_instance(&e);
         let admin = storage::get_admin(&e);

test-suites/tests/test_pool.rs

@@ -535,7 +535,7 @@ fn test_pool_user() {
 /// Does not test internal state management of the lending pool, only external effects.
 #[test]
 fn test_pool_config() {
-    let fixture = create_fixture_with_data(true);
+    let fixture = create_fixture_with_data(false);
 
     let pool_fixture = &fixture.pools[0];
 
@@ -682,12 +682,46 @@ fn test_pool_config() {
         ]
     );
 
+    // Set admin (admin only)
+    let new_admin = Address::random(&fixture.env);
+    pool_fixture.pool.set_admin(&new_admin);
+    assert_eq!(
+        fixture.env.auths()[0],
+        (
+            fixture.bombadil.clone(),
+            AuthorizedInvocation {
+                function: AuthorizedFunction::Contract((
+                    pool_fixture.pool.address.clone(),
+                    Symbol::new(&fixture.env, "set_admin"),
+                    vec![&fixture.env, new_admin.to_val(),]
+                )),
+                sub_invocations: std::vec![]
+            }
+        )
+    );
+    let event = vec![&fixture.env, fixture.env.events().all().last_unchecked()];
+    assert_eq!(
+        event,
+        vec![
+            &fixture.env,
+            (
+                pool_fixture.pool.address.clone(),
+                (
+                    Symbol::new(&fixture.env, "set_admin"),
+                    fixture.bombadil.clone()
+                )
+                    .into_val(&fixture.env),
+                new_admin.into_val(&fixture.env)
+            )
+        ]
+    );
+
     // Set status (admin only)
     pool_fixture.pool.set_status(&1);
     assert_eq!(
         fixture.env.auths()[0],
         (
-            fixture.bombadil.clone(),
+            new_admin.clone(),
             AuthorizedInvocation {
                 function: AuthorizedFunction::Contract((
                     pool_fixture.pool.address.clone(),
@@ -707,11 +741,7 @@ fn test_pool_config() {
             &fixture.env,
             (
                 pool_fixture.pool.address.clone(),
-                (
-                    Symbol::new(&fixture.env, "set_status"),
-                    fixture.bombadil.clone()
-                )
-                    .into_val(&fixture.env),
+                (Symbol::new(&fixture.env, "set_status"), new_admin.clone()).into_val(&fixture.env),
                 1u32.into_val(&fixture.env)
             )
         ]
@@ -758,7 +788,7 @@ fn test_pool_config() {
     assert_eq!(
         fixture.env.auths()[0],
         (
-            fixture.bombadil.clone(),
+            new_admin.clone(),
             AuthorizedInvocation {
                 function: AuthorizedFunction::Contract((
                     pool_fixture.pool.address.clone(),