[ReducerProtocol] - Support Non-Dependencies Environment in ReducerProtocol

Sources/RxComposableArchitecture/TestSupport/TestStore.swift

@@ -487,46 +487,12 @@ public final class TestStore<State, Action, ScopedState, ScopedAction, Environme
     ///   // ...
     /// }
     /// ```
-    @available(
-        iOS,
-        deprecated: 9999,
-        message:
-          """
-          'Reducer' and `Environment` have been deprecated in favor of 'ReducerProtocol' and 'DependencyValues'.
-
-          See the migration guide for more information: https://pointfreeco.github.io/swift-composable-architecture/main/documentation/composablearchitecture/reducerprotocol
-          """
-    )
-    @available(
-        macOS,
-        deprecated: 9999,
-        message:
-          """
-          'Reducer' and `Environment` have been deprecated in favor of 'ReducerProtocol' and 'DependencyValues'.
-
-          See the migration guide for more information: https://pointfreeco.github.io/swift-composable-architecture/main/documentation/composablearchitecture/reducerprotocol
-          """
-    )
-    @available(
-        tvOS,
-        deprecated: 9999,
-        message:
-          """
-          'Reducer' and `Environment` have been deprecated in favor of 'ReducerProtocol' and 'DependencyValues'.
-
-          See the migration guide for more information: https://pointfreeco.github.io/swift-composable-architecture/main/documentation/composablearchitecture/reducerprotocol
-          """
-    )
-    @available(
-        watchOS,
-        deprecated: 9999,
-        message:
-          """
-          'Reducer' and `Environment` have been deprecated in favor of 'ReducerProtocol' and 'DependencyValues'.
-
-          See the migration guide for more information: https://pointfreeco.github.io/swift-composable-architecture/main/documentation/composablearchitecture/reducerprotocol
-          """
-    )
+    ///
+    /// 🗒️ in original Composable Architecture, environment is deprecated
+    /// but in our cases, we gonna use it to support `Environment` inside `ReducerProtocol`
+    /// so in the future, we will keep this implementation
+    /// if original Composable Architecture decided to delete this property
+    ///
     public var environment: Environment {
         _read { yield self._environment.wrappedValue }
         _modify { yield &self._environment.wrappedValue }
@@ -699,6 +665,51 @@ public final class TestStore<State, Action, ScopedState, ScopedAction, Environme
         self.dependencies = dependencies
     }
 
+    /// Hence here we are creating an init for supporting non-Dependencies Environment
+    /// we are using current Environment implementations
+    ///
+    /// ⚠️ Use this init only if you are having case of non-Dependencies Environment
+    ///
+    public init<R: ReducerProtocol>(
+        initialState: @autoclosure () -> State,
+        environment: Environment,
+        reducer prepareReducer: @escaping (Environment) -> R,
+        file: StaticString = #file,
+        line: UInt = #line
+    )
+    where
+    R.State == State,
+    R.Action == Action,
+    State == ScopedState,
+    State: Equatable,
+    Action == ScopedAction
+    {
+        let environment = TaskBox(wrappedValue: environment)
+        let reducer = TestReducer(
+            Reduce(
+                internal: { state, action in
+                    prepareReducer(environment.wrappedValue).reduce(into: &state, action: action)
+                }
+            ),
+            initialState: initialState()
+        )
+        self._environment = environment
+        self.file = file
+        self.fromScopedAction = { $0 }
+        self.line = line
+        self.reducer = reducer
+        self.timeout = 100 * NSEC_PER_MSEC
+        self.toScopedState = { $0 }
+        self.failingWhenNothingChange = true
+        self.useNewScope = true
+
+        self.store = Store(
+            initialState: initialState(),
+            reducer: reducer,
+            useNewScope: useNewScope
+        )
+    }
+
     @available(
         iOS,
         deprecated: 9999,

Tests/RxComposableArchitectureTests/EnvironmentReducerProtocolTests.swift

@@ -0,0 +1,73 @@
+//
+//  EnvironmentReducerProtocolTests.swift
+//  
+//
+//  Created by andhika.setiadi on 17/08/23.
+//
+
+import XCTest
+@testable import RxComposableArchitecture
+@testable import XCTestDynamicOverlay
+
+internal final class EnvironmentReducerProtocolTests: XCTestCase {
+
+    internal func testEnvironmentReducerProtocol_getSuccess() {
+        struct Authenticator: ReducerProtocol {
+            typealias State = String
+            typealias Action = Void
+
+            internal var authenticatorService: AuthenticatorService
+
+            func reduce(into state: inout String, action: Void) -> Effect<Void> {
+                switch authenticatorService.getAuthResult() {
+                case let .success(successMessage):
+                    state = successMessage
+                case let .failure(failureData):
+                    state = failureData.message
+                }
+                return .none
+            }
+        }
+
+        let testStore = TestStore(
+            initialState: "",
+            environment: AuthenticatorService.mock,
+            reducer: Authenticator.init(authenticatorService:)
+        )
+
+        testStore.environment.getAuthResult = {
+            .success("success")
+        }
+
+        testStore.send(()) {
+            $0 = "success"
+        }
+
+        testStore.environment.getAuthResult = {
+            .failure(Failure(message: "Failed"))
+        }
+
+        testStore.send(()) {
+            $0 = "Failed"
+        }
+    }
+}
+
+private struct Failure: Error {
+    let message: String
+}
+
+private struct AuthenticatorService {
+    var getAuthResult: () -> Result<String, Failure>
+
+    static var mock: AuthenticatorService {
+        return AuthenticatorService(
+            getAuthResult: unimplemented(
+                "Unimplemented getAuthResult",
+                placeholder: .failure(
+                    Failure(message: "Need Mock")
+                )
+            )
+        )
+    }
+}