[pigeon] Run swift-format on ungenerated example app Swift files (#5934)

Run `swift-format` linter/formatter on Swift files in example apps.  This only touches Swift files in example/test code.  

This also doesn't format any autogenerated Swift files, which would require changed in the pigeon generator: flutter/flutter#141799

Part of turning on swift-format CI formatting #5928

packages/pigeon/example/README.md

@@ -127,14 +127,14 @@ private class PigeonApiImplementation: ExampleHostApi {
   }
 
   func add(_ a: Int64, to b: Int64) throws -> Int64 {
-    if (a < 0 || b < 0) {
-      throw FlutterError(code: "code", message: "message", details: "details");
+    if a < 0 || b < 0 {
+      throw FlutterError(code: "code", message: "message", details: "details")
     }
     return a + b
   }
 
   func sendMessage(message: MessageData, completion: @escaping (Result<Bool, Error>) -> Void) {
-    if (message.code == Code.one) {
+    if message.code == Code.one {
       completion(.failure(FlutterError(code: "code", message: "message", details: "details")))
       return
     }
@@ -237,7 +237,9 @@ private class PigeonFlutterApi {
     flutterAPI = MessageFlutterApi(binaryMessenger: binaryMessenger)
   }
 
-  func callFlutterMethod(aString aStringArg: String?, completion: @escaping (Result<String, Error>) -> Void) {
+  func callFlutterMethod(
+    aString aStringArg: String?, completion: @escaping (Result<String, Error>) -> Void
+  ) {
     flutterAPI.flutterMethod(aString: aStringArg) {
       completion(.success($0))
     }

packages/pigeon/example/app/ios/Runner/AppDelegate.swift

@@ -15,14 +15,14 @@ private class PigeonApiImplementation: ExampleHostApi {
   }
 
   func add(_ a: Int64, to b: Int64) throws -> Int64 {
-    if (a < 0 || b < 0) {
-      throw FlutterError(code: "code", message: "message", details: "details");
+    if a < 0 || b < 0 {
+      throw FlutterError(code: "code", message: "message", details: "details")
     }
     return a + b
   }
 
   func sendMessage(message: MessageData, completion: @escaping (Result<Bool, Error>) -> Void) {
-    if (message.code == Code.one) {
+    if message.code == Code.one {
       completion(.failure(FlutterError(code: "code", message: "message", details: "details")))
       return
     }
@@ -39,7 +39,9 @@ private class PigeonFlutterApi {
     flutterAPI = MessageFlutterApi(binaryMessenger: binaryMessenger)
   }
 
-  func callFlutterMethod(aString aStringArg: String?, completion: @escaping (Result<String, Error>) -> Void) {
+  func callFlutterMethod(
+    aString aStringArg: String?, completion: @escaping (Result<String, Error>) -> Void
+  ) {
     flutterAPI.flutterMethod(aString: aStringArg) {
       completion(.success($0))
     }

packages/pigeon/platform_tests/alternate_language_test_plugin/example/macos/RunnerTests/RunnerTests.swift

@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import FlutterMacOS
 import Cocoa
+import FlutterMacOS
 import XCTest
 
 @testable import alternate_language_test_plugin

packages/pigeon/platform_tests/test_plugin/example/ios/Runner/AppDelegate.swift

@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import UIKit
 import Flutter
+import UIKit
 
 @UIApplicationMain
 @objc class AppDelegate: FlutterAppDelegate {

packages/pigeon/platform_tests/test_plugin/example/ios/RunnerTests/AllDatatypesTests.swift

@@ -4,6 +4,7 @@
 
 import Flutter
 import XCTest
+
 @testable import test_plugin
 
 class AllDatatypesTests: XCTestCase {
@@ -17,25 +18,25 @@ class AllDatatypesTests: XCTestCase {
 
     api.echoNullable(everything) { result in
       switch result {
-        case .success(let res) :
-          XCTAssertNotNil(res)
-          XCTAssertNil(res!.aNullableBool)
-          XCTAssertNil(res!.aNullableInt)
-          XCTAssertNil(res!.aNullableDouble)
-          XCTAssertNil(res!.aNullableString)
-          XCTAssertNil(res!.aNullableByteArray)
-          XCTAssertNil(res!.aNullable4ByteArray)
-          XCTAssertNil(res!.aNullable8ByteArray)
-          XCTAssertNil(res!.aNullableFloatArray)
-          XCTAssertNil(res!.aNullableList)
-          XCTAssertNil(res!.aNullableMap)
-          XCTAssertNil(res!.nullableNestedList)
-          XCTAssertNil(res!.nullableMapWithAnnotations)
-          XCTAssertNil(res!.nullableMapWithObject)
-          expectation.fulfill()
-        case .failure(_) :
-          return
-        
+      case .success(let res):
+        XCTAssertNotNil(res)
+        XCTAssertNil(res!.aNullableBool)
+        XCTAssertNil(res!.aNullableInt)
+        XCTAssertNil(res!.aNullableDouble)
+        XCTAssertNil(res!.aNullableString)
+        XCTAssertNil(res!.aNullableByteArray)
+        XCTAssertNil(res!.aNullable4ByteArray)
+        XCTAssertNil(res!.aNullable8ByteArray)
+        XCTAssertNil(res!.aNullableFloatArray)
+        XCTAssertNil(res!.aNullableList)
+        XCTAssertNil(res!.aNullableMap)
+        XCTAssertNil(res!.nullableNestedList)
+        XCTAssertNil(res!.nullableMapWithAnnotations)
+        XCTAssertNil(res!.nullableMapWithObject)
+        expectation.fulfill()
+      case .failure(_):
+        return
+
       }
     }
 
@@ -55,36 +56,36 @@ class AllDatatypesTests: XCTestCase {
       aNullableMap: ["hello": 1234],
       nullableNestedList: [[true, false], [true]],
       nullableMapWithAnnotations: ["hello": "world"],
-      nullableMapWithObject: ["hello": 1234, "goodbye" : "world"],
+      nullableMapWithObject: ["hello": 1234, "goodbye": "world"],
       aNullableString: "123"
     )
-    
+
     let binaryMessenger = EchoBinaryMessenger(codec: FlutterIntegrationCoreApiCodec.shared)
     let api = FlutterIntegrationCoreApi(binaryMessenger: binaryMessenger)
 
     let expectation = XCTestExpectation(description: "callback")
 
     api.echoNullable(everything) { result in
-     switch result {
-        case .success(let res) :
-          XCTAssertNotNil(res)
-          XCTAssertEqual(res!.aNullableBool, everything.aNullableBool)
-          XCTAssertEqual(res!.aNullableInt, everything.aNullableInt)
-          XCTAssertEqual(res!.aNullableDouble, everything.aNullableDouble)
-          XCTAssertEqual(res!.aNullableString, everything.aNullableString)
-          XCTAssertEqual(res!.aNullableByteArray, everything.aNullableByteArray)
-          XCTAssertEqual(res!.aNullable4ByteArray, everything.aNullable4ByteArray)
-          XCTAssertEqual(res!.aNullable8ByteArray, everything.aNullable8ByteArray)
-          XCTAssertEqual(res!.aNullableFloatArray, everything.aNullableFloatArray)
-          XCTAssert(equalsList(res!.aNullableList, everything.aNullableList))
-          XCTAssert(equalsDictionary(res!.aNullableMap, everything.aNullableMap))
-          XCTAssertEqual(res!.nullableNestedList, everything.nullableNestedList)
-          XCTAssertEqual(res!.nullableMapWithAnnotations, everything.nullableMapWithAnnotations)
-          XCTAssert(equalsDictionary(res!.nullableMapWithObject, everything.nullableMapWithObject))
-          expectation.fulfill()
-          return
-        case .failure(_) :
-          return
+      switch result {
+      case .success(let res):
+        XCTAssertNotNil(res)
+        XCTAssertEqual(res!.aNullableBool, everything.aNullableBool)
+        XCTAssertEqual(res!.aNullableInt, everything.aNullableInt)
+        XCTAssertEqual(res!.aNullableDouble, everything.aNullableDouble)
+        XCTAssertEqual(res!.aNullableString, everything.aNullableString)
+        XCTAssertEqual(res!.aNullableByteArray, everything.aNullableByteArray)
+        XCTAssertEqual(res!.aNullable4ByteArray, everything.aNullable4ByteArray)
+        XCTAssertEqual(res!.aNullable8ByteArray, everything.aNullable8ByteArray)
+        XCTAssertEqual(res!.aNullableFloatArray, everything.aNullableFloatArray)
+        XCTAssert(equalsList(res!.aNullableList, everything.aNullableList))
+        XCTAssert(equalsDictionary(res!.aNullableMap, everything.aNullableMap))
+        XCTAssertEqual(res!.nullableNestedList, everything.nullableNestedList)
+        XCTAssertEqual(res!.nullableMapWithAnnotations, everything.nullableMapWithAnnotations)
+        XCTAssert(equalsDictionary(res!.nullableMapWithObject, everything.nullableMapWithObject))
+        expectation.fulfill()
+        return
+      case .failure(_):
+        return
       }
     }
     wait(for: [expectation], timeout: 1.0)

packages/pigeon/platform_tests/test_plugin/example/ios/RunnerTests/AsyncHandlersTest.swift

@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 import Flutter
 import XCTest
+
 @testable import test_plugin
 
 class MockHostSmallApi: HostSmallApi {
@@ -27,20 +28,21 @@ class AsyncHandlersTest: XCTestCase {
 
     let expectation = XCTestExpectation(description: "callback")
     flutterApi.echo(value) { result in
-    switch result {
-        case .success(let res) :
-      XCTAssertEqual(res, value)
-      expectation.fulfill()
-        case .failure(_) :
-          return
+      switch result {
+      case .success(let res):
+        XCTAssertEqual(res, value)
+        expectation.fulfill()
+      case .failure(_):
+        return
       }
 
     }
     wait(for: [expectation], timeout: 1.0)
   }
 
   func testAsyncFlutter2HostVoidVoid() throws {
-    let binaryMessenger = MockBinaryMessenger<String>(codec: FlutterStandardMessageCodec.sharedInstance())
+    let binaryMessenger = MockBinaryMessenger<String>(
+      codec: FlutterStandardMessageCodec.sharedInstance())
     let mockHostSmallApi = MockHostSmallApi()
     HostSmallApiSetup.setUp(binaryMessenger: binaryMessenger, api: mockHostSmallApi)
     let channelName = "dev.flutter.pigeon.pigeon_integration_tests.HostSmallApi.voidVoid"
@@ -49,14 +51,15 @@ class AsyncHandlersTest: XCTestCase {
     let expectation = XCTestExpectation(description: "voidvoid callback")
     binaryMessenger.handlers[channelName]?(nil) { data in
       let outputList = binaryMessenger.codec.decode(data) as? [Any]
-        XCTAssertEqual(outputList?.first as! NSNull, NSNull())
+      XCTAssertEqual(outputList?.first as! NSNull, NSNull())
       expectation.fulfill()
     }
     wait(for: [expectation], timeout: 1.0)
   }
 
   func testAsyncFlutter2Host() throws {
-    let binaryMessenger = MockBinaryMessenger<String>(codec: FlutterStandardMessageCodec.sharedInstance())
+    let binaryMessenger = MockBinaryMessenger<String>(
+      codec: FlutterStandardMessageCodec.sharedInstance())
     let mockHostSmallApi = MockHostSmallApi()
     let value = "Test"
     mockHostSmallApi.output = value
@@ -69,7 +72,7 @@ class AsyncHandlersTest: XCTestCase {
     let expectation = XCTestExpectation(description: "echo callback")
     binaryMessenger.handlers[channelName]?(inputEncoded) { data in
       let outputList = binaryMessenger.codec.decode(data) as? [Any]
-        let output = outputList?.first as? String
+      let output = outputList?.first as? String
       XCTAssertEqual(output, value)
       expectation.fulfill()
     }

packages/pigeon/platform_tests/test_plugin/example/ios/RunnerTests/EchoBinaryMessenger.swift

@@ -2,30 +2,30 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import Foundation
 import Flutter
+import Foundation
 
 class EchoBinaryMessenger: NSObject, FlutterBinaryMessenger {
   let codec: FlutterMessageCodec
   private(set) var count = 0
   var defaultReturn: Any?
-  
+
   init(codec: FlutterMessageCodec) {
     self.codec = codec
     super.init()
   }
-  
+
   func send(onChannel channel: String, message: Data?) {
     // Method not implemented because this messenger is just for echoing
   }
-  
+
   func send(
     onChannel channel: String,
     message: Data?,
     binaryReply callback: FlutterBinaryReply? = nil
   ) {
     guard let callback = callback else { return }
-    
+
     guard
       let args = self.codec.decode(message) as? [Any?],
       let firstArg = args.first,
@@ -34,20 +34,21 @@ class EchoBinaryMessenger: NSObject, FlutterBinaryMessenger {
       callback(self.defaultReturn.flatMap { self.codec.encode([$0]) })
       return
     }
-    
+
     callback(self.codec.encode([castedFirstArg]))
   }
-  
+
   func setMessageHandlerOnChannel(
-    _ channel: String, binaryMessageHandler handler:
-    FlutterBinaryMessageHandler? = nil
+    _ channel: String,
+    binaryMessageHandler handler:
+      FlutterBinaryMessageHandler? = nil
   ) -> FlutterBinaryMessengerConnection {
     self.count += 1
     return FlutterBinaryMessengerConnection(self.count)
   }
-  
+
   func cleanUpConnection(_ connection: FlutterBinaryMessengerConnection) {
-    // Method not implemented because this messenger is just for echoing    
+    // Method not implemented because this messenger is just for echoing
   }
 
   private func nilOrValue<T>(_ value: Any?) -> T? {

packages/pigeon/platform_tests/test_plugin/example/ios/RunnerTests/EnumTests.swift

@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 import XCTest
+
 @testable import test_plugin
 
 class MockEnumApi2Host: EnumApi2Host {
@@ -32,7 +33,7 @@ class EnumTests: XCTestCase {
     binaryMessenger.handlers[channelName]?(inputEncoded) { data in
       let outputMap = binaryMessenger.codec.decode(data) as? [Any]
       XCTAssertNotNil(outputMap)
-      
+
       let output = outputMap?.first as? DataWithEnum
       XCTAssertEqual(output, input)
       XCTAssertTrue(outputMap?.count == 1)
@@ -49,11 +50,11 @@ class EnumTests: XCTestCase {
     let expectation = XCTestExpectation(description: "callback")
     api.echo(data: data) { result in
       switch result {
-        case .success(let res) :
-          XCTAssertEqual(res.state, res.state)
-          expectation.fulfill()
-        case .failure(_) :
-          return
+      case .success(let res):
+        XCTAssertEqual(res.state, res.state)
+        expectation.fulfill()
+      case .failure(_):
+        return
       }
     }
     wait(for: [expectation], timeout: 1.0)