Merge pull request #2383 from CosmWasm/co/downcast-api

Implement downcasting for `Api` trait

Author: chipshort

CHANGELOG.md

@@ -16,6 +16,8 @@ and this project adheres to
 - cosmwasm-std: Implement `Uint128::from_{be,le}_bytes` and
   `Uint64::from_{be,le}_bytes`. ([#2269])
 - cosmwasm-std: Added new `EurekaMsg` and `CosmosMsg::Eureka` variant ([#2340])
+- cosmwasm-std: Implement downcasting for `Api` trait. This allows using
+  `MockApi::addr_make` from `DepsMut`. ([#2383])
 
 ## Changed
 
@@ -45,6 +47,7 @@ and this project adheres to
 [#2344]: https://github.com/CosmWasm/cosmwasm/pull/2344
 [#2374]: https://github.com/CosmWasm/cosmwasm/issues/2374
 [#2378]: https://github.com/CosmWasm/cosmwasm/issues/2378
+[#2383]: https://github.com/CosmWasm/cosmwasm/issues/2383
 
 ## [2.2.0] - 2024-12-17
 

Cargo.lock

@@ -74,6 +74,7 @@ serde-json-wasm = { version = "1.0.1", default-features = false, features = [
 static_assertions = "1.1.0"
 thiserror = "1.0.26"
 rmp-serde = "1.3.0"
+downcast-rs = { version = "2.0.1", default-features = false }
 
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies]
 bech32 = "0.11.0"

contracts/burner/Cargo.lock

@@ -2756,4 +2756,15 @@ mod tests {
         // we are not interested in the exact humanization, just that it works
         mock_api.addr_humanize(&canonical_addr).unwrap();
     }
+
+    #[test]
+    fn mock_api_downcast() {
+        let mut deps = mock_dependencies();
+        let deps_mut = deps.as_mut();
+
+        let mock_api = deps_mut.api.downcast_ref::<MockApi>().unwrap();
+
+        let addr = mock_api.addr_make("input");
+        assert_eq!(mock_api.addr_validate(addr.as_str()).unwrap(), addr);
+    }
 }