[Config] Add Config and ConfigSwift API build tests (#11774)

FirebaseRemoteConfigSwift/Tests/SwiftAPI/FirebaseRemoteConfigSwift_APIBuildTests.swift

@@ -0,0 +1,233 @@
+// Copyright 2023 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import XCTest
+
+import FirebaseCore
+import FirebaseRemoteConfig
+import FirebaseRemoteConfigSwift
+
+final class FirebaseRemoteConfigSwift_APIBuildTests: XCTestCase {
+  func usage() throws {
+    // MARK: - FirebaseRemoteConfig
+
+    // TODO(ncooke3): These global constants should be lowercase.
+    let _: String = FirebaseRemoteConfig.NamespaceGoogleMobilePlatform
+    let _: String = FirebaseRemoteConfig.RemoteConfigThrottledEndTimeInSecondsKey
+
+    // TODO(ncooke3): This should probably not be initializable.
+    FirebaseRemoteConfig.ConfigUpdateListenerRegistration().remove()
+
+    let fetchStatus: FirebaseRemoteConfig.RemoteConfigFetchStatus? = nil
+    switch fetchStatus! {
+    case .noFetchYet: break
+    case .success: break
+    case .failure: break
+    case .throttled: break
+    @unknown default: break
+    }
+
+    let fetchAndActivateStatus: FirebaseRemoteConfig.RemoteConfigFetchAndActivateStatus? = nil
+    switch fetchAndActivateStatus! {
+    case .successFetchedFromRemote: break
+    case .successUsingPreFetchedData: break
+    case .error: break
+    @unknown default: break
+    }
+
+    // Used to pass into the intializers for the custom errors below.
+    let nsError = NSError(domain: "", code: 0, userInfo: nil)
+
+    // TODO(ncooke3): Global constants should be lowercase.
+    let _: String = FirebaseRemoteConfig.RemoteConfigErrorDomain
+    let _ = FirebaseRemoteConfig.RemoteConfigError(_nsError: nsError)
+    let _: FirebaseRemoteConfig.RemoteConfigError.Code._ErrorType = FirebaseRemoteConfig
+      .RemoteConfigError(_nsError: nsError)
+    let _: String = FirebaseRemoteConfig.RemoteConfigError.errorDomain
+    let code: FirebaseRemoteConfig.RemoteConfigError.Code? = nil
+    switch code! {
+    case .unknown: break
+    case .throttled: break
+    case .internalError: break
+    @unknown default: break
+    }
+    _ = FirebaseRemoteConfig.RemoteConfigError.unknown
+    _ = FirebaseRemoteConfig.RemoteConfigError.throttled
+    _ = FirebaseRemoteConfig.RemoteConfigError.internalError
+
+    // TODO(ncooke3): Global constants should be lowercase.
+    let _: String = FirebaseRemoteConfig.RemoteConfigUpdateErrorDomain
+    let _ = FirebaseRemoteConfig.RemoteConfigUpdateError(_nsError: nsError)
+    let _: FirebaseRemoteConfig.RemoteConfigUpdateError.Code._ErrorType = FirebaseRemoteConfig
+      .RemoteConfigUpdateError(_nsError: nsError)
+    let _: String = FirebaseRemoteConfig.RemoteConfigUpdateError.errorDomain
+    let updateErrorCode: FirebaseRemoteConfig.RemoteConfigUpdateError.Code? = nil
+    switch updateErrorCode! {
+    case .streamError: break
+    case .notFetched: break
+    case .messageInvalid: break
+    case .unavailable: break
+    @unknown default: break
+    }
+    _ = FirebaseRemoteConfig.RemoteConfigUpdateError.streamError
+    _ = FirebaseRemoteConfig.RemoteConfigUpdateError.notFetched
+    _ = FirebaseRemoteConfig.RemoteConfigUpdateError.messageInvalid
+    _ = FirebaseRemoteConfig.RemoteConfigUpdateError.unavailable
+
+    // TODO(ncooke3): This should probably not be initializable.
+    let value = FirebaseRemoteConfig.RemoteConfigValue()
+    let _: String? = value.stringValue
+    // TODO(ncooke3): Returns an Objective-C reference type.
+    let _: NSNumber = value.numberValue
+    let _: Data = value.dataValue
+    let _: Bool = value.boolValue
+    let _: Any? = value.jsonValue
+
+    let source: FirebaseRemoteConfig.RemoteConfigSource = value.source
+    switch source {
+    case .remote: break
+    case .default: break
+    case .static: break
+    @unknown default: break
+    }
+
+    let settings = FirebaseRemoteConfig.RemoteConfigSettings()
+    settings.minimumFetchInterval = TimeInterval(100)
+    settings.fetchTimeout = TimeInterval(100)
+
+    // TODO(ncooke3): This should probably not be initializable.
+    let update = FirebaseRemoteConfig.RemoteConfigUpdate()
+    let _: Set<String> = update.updatedKeys
+
+    let _ = FirebaseRemoteConfig.RemoteConfig.remoteConfig()
+    let config = FirebaseRemoteConfig.RemoteConfig
+      .remoteConfig(app: FirebaseCore.FirebaseApp.app()!)
+    let _: Date? = config.lastFetchTime
+    let _: FirebaseRemoteConfig.RemoteConfigFetchStatus = config.lastFetchStatus
+    let _: FirebaseRemoteConfig.RemoteConfigSettings = config.configSettings
+
+    config.ensureInitialized(completionHandler: { (error: Error?) in })
+
+    config.fetch(completionHandler: { (status: FirebaseRemoteConfig.RemoteConfigFetchStatus,
+                                       error: Error?) in })
+
+    config.fetch()
+
+    config.fetch(
+      withExpirationDuration: TimeInterval(100),
+      completionHandler: { (status: FirebaseRemoteConfig.RemoteConfigFetchStatus, error: Error?) in
+      }
+    )
+
+    config.fetch(withExpirationDuration: TimeInterval(100))
+
+    config
+      .fetchAndActivate(
+        completionHandler: { (status: FirebaseRemoteConfig.RemoteConfigFetchAndActivateStatus,
+                              error: Error?) in }
+      )
+
+    config.fetchAndActivate()
+
+    config.activate(completion: { (success: Bool, error: Error?) in })
+
+    config.activate()
+
+    if #available(iOS 13.0, *) {
+      Task {
+        let _: Void = try await config.ensureInitialized()
+        let _: FirebaseRemoteConfig.RemoteConfigFetchStatus = try await config.fetch()
+        let _: FirebaseRemoteConfig.RemoteConfigFetchStatus = try await config
+          .fetch(withExpirationDuration: TimeInterval(100))
+        let _: FirebaseRemoteConfig.RemoteConfigFetchAndActivateStatus = try await config
+          .fetchAndActivate()
+        let _: Bool = try await config.activate()
+      }
+    }
+
+    let _: FirebaseRemoteConfig.RemoteConfigValue = config["key"]
+    let _: FirebaseRemoteConfig.RemoteConfigValue = config.configValue(forKey: "key")
+    // TODO(ncooke3): Should `nil` be acceptable here in a Swift context?
+    let _: FirebaseRemoteConfig.RemoteConfigValue = config.configValue(forKey: nil)
+    let _: FirebaseRemoteConfig.RemoteConfigValue = config.configValue(
+      forKey: "key",
+      source: source
+    )
+    // TODO(ncooke3): Should `nil` be acceptable here in a Swift context?
+    let _: FirebaseRemoteConfig.RemoteConfigValue = config.configValue(forKey: nil, source: source)
+
+    let _: [String] = config.allKeys(from: source)
+
+    let _: Set<String> = config.keys(withPrefix: "")
+    // TODO(ncooke3): Should `nil` be acceptable here in a Swift context?
+    let _: Set<String> = config.keys(withPrefix: nil)
+
+    let defaults: [String: NSObject]? = [:]
+    config.setDefaults(defaults)
+    // TODO(ncooke3): Should `nil` be acceptable here in a Swift context?
+    config.setDefaults(nil)
+
+    config.setDefaults(fromPlist: "")
+    // TODO(ncooke3): Should `nil` be acceptable here in a Swift context?
+    config.setDefaults(fromPlist: nil)
+
+    let _: FirebaseRemoteConfig.RemoteConfigValue? = config.defaultValue(forKey: "")
+    // TODO(ncooke3): Should `nil` be acceptable here in a Swift context?
+    let _: FirebaseRemoteConfig.RemoteConfigValue? = config.defaultValue(forKey: nil)
+
+    let _: FirebaseRemoteConfig.ConfigUpdateListenerRegistration = config
+      .addOnConfigUpdateListener(
+        remoteConfigUpdateCompletion: { (update: FirebaseRemoteConfig.RemoteConfigUpdate?,
+                                         error: Error?) in
+        }
+      )
+
+    // MARK: - FirebaseRemoteConfigSwift
+
+    let valueError: FirebaseRemoteConfigSwift
+      .RemoteConfigValueCodableError = .unsupportedType("foo")
+    switch valueError {
+    case .unsupportedType: break
+    }
+
+    let error: FirebaseRemoteConfigSwift.RemoteConfigCodableError = .invalidSetDefaultsInput("foo")
+    switch error {
+    case .invalidSetDefaultsInput: break
+    }
+
+    @available(iOS 14.0, macOS 11.0, macCatalyst 14.0, tvOS 14.0, watchOS 7.0, *)
+    struct PropertyWrapperTester {
+      @FirebaseRemoteConfigSwift.RemoteConfigProperty(key: "", fallback: "")
+      var stringValue: String!
+    }
+
+    // This should not build because `FirebaseRemoteConfigSwift` does not
+    // re-export `FirebaseRemoteConfig`.
+    //    let _: FirebaseRemoteConfigSwift.RemoteConfig
+
+    struct MyDecodableValue: Decodable {}
+    let _: MyDecodableValue? = config[decodedValue: ""]
+
+    let _: [String: AnyHashable]? = config[jsonValue: ""]
+
+    let _: MyDecodableValue = try value.decoded()
+    let _: MyDecodableValue = try value.decoded(asType: MyDecodableValue.self)
+
+    let _: MyDecodableValue? = try config.decoded()
+    let _: MyDecodableValue? = try config.decoded(asType: MyDecodableValue.self)
+
+    struct MyEncodableValue: Encodable {}
+    let _: Void = try config.setDefaults(from: MyEncodableValue())
+  }
+}