[webview_flutter_wkwebview] The rest of the Objective-C HostApi methods

packages/webview_flutter/webview_flutter_wkwebview/example/ios/Runner.xcodeproj/project.pbxproj

@@ -3,7 +3,7 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 46;
+	objectVersion = 50;
 	objects = {
 
 /* Begin PBXBuildFile section */
@@ -14,6 +14,17 @@
 		8FA6A87928062CD000A4B183 /* FWFInstanceManagerTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 8FA6A87828062CD000A4B183 /* FWFInstanceManagerTests.m */; };
 		8FB79B5328134C3100C101D3 /* FWFWebViewHostApiTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 8FB79B5228134C3100C101D3 /* FWFWebViewHostApiTests.m */; };
 		8FB79B55281B24F600C101D3 /* FWFDataConvertersTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 8FB79B54281B24F600C101D3 /* FWFDataConvertersTests.m */; };
+		8FB79B672820453400C101D3 /* FWFHTTPCookieStoreHostApiTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 8FB79B662820453400C101D3 /* FWFHTTPCookieStoreHostApiTests.m */; };
+		8FB79B6928204E8700C101D3 /* FWFPreferencesHostApiTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 8FB79B6828204E8700C101D3 /* FWFPreferencesHostApiTests.m */; };
+		8FB79B6B28204EE500C101D3 /* FWFWebsiteDataStoreHostApiTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 8FB79B6A28204EE500C101D3 /* FWFWebsiteDataStoreHostApiTests.m */; };
+		8FB79B6D2820533B00C101D3 /* FWFWebViewConfigurationHostApiTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 8FB79B6C2820533B00C101D3 /* FWFWebViewConfigurationHostApiTests.m */; };
+		8FB79B73282096B500C101D3 /* FWFScriptMessageHandlerHostApiTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 8FB79B72282096B500C101D3 /* FWFScriptMessageHandlerHostApiTests.m */; };
+		8FB79B7928209D1300C101D3 /* FWFUserContentControllerHostApiTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 8FB79B7828209D1300C101D3 /* FWFUserContentControllerHostApiTests.m */; };
+		8FB79B832820A39300C101D3 /* FWFNavigationDelegateHostApiTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 8FB79B822820A39300C101D3 /* FWFNavigationDelegateHostApiTests.m */; };
+		8FB79B852820A3A400C101D3 /* FWFUIDelegateHostApiTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 8FB79B842820A3A400C101D3 /* FWFUIDelegateHostApiTests.m */; };
+		8FB79B8F2820BAB300C101D3 /* FWFScrollViewHostApiTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 8FB79B8E2820BAB300C101D3 /* FWFScrollViewHostApiTests.m */; };
+		8FB79B912820BAC700C101D3 /* FWFUIViewHostApiTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 8FB79B902820BAC700C101D3 /* FWFUIViewHostApiTests.m */; };
+		8FB79B972821985200C101D3 /* FWFObjectHostApiTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 8FB79B962821985200C101D3 /* FWFObjectHostApiTests.m */; };
 		978B8F6F1D3862AE00F588F7 /* AppDelegate.m in Sources */ = {isa = PBXBuildFile; fileRef = 7AFFD8EE1D35381100E5BB4D /* AppDelegate.m */; };
 		97C146F31CF9000F007C117D /* main.m in Sources */ = {isa = PBXBuildFile; fileRef = 97C146F21CF9000F007C117D /* main.m */; };
 		97C146FC1CF9000F007C117D /* Main.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FA1CF9000F007C117D /* Main.storyboard */; };
@@ -73,6 +84,17 @@
 		8FA6A87828062CD000A4B183 /* FWFInstanceManagerTests.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = FWFInstanceManagerTests.m; sourceTree = "<group>"; };
 		8FB79B5228134C3100C101D3 /* FWFWebViewHostApiTests.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = FWFWebViewHostApiTests.m; sourceTree = "<group>"; };
 		8FB79B54281B24F600C101D3 /* FWFDataConvertersTests.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = FWFDataConvertersTests.m; sourceTree = "<group>"; };
+		8FB79B662820453400C101D3 /* FWFHTTPCookieStoreHostApiTests.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = FWFHTTPCookieStoreHostApiTests.m; sourceTree = "<group>"; };
+		8FB79B6828204E8700C101D3 /* FWFPreferencesHostApiTests.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = FWFPreferencesHostApiTests.m; sourceTree = "<group>"; };
+		8FB79B6A28204EE500C101D3 /* FWFWebsiteDataStoreHostApiTests.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = FWFWebsiteDataStoreHostApiTests.m; sourceTree = "<group>"; };
+		8FB79B6C2820533B00C101D3 /* FWFWebViewConfigurationHostApiTests.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = FWFWebViewConfigurationHostApiTests.m; sourceTree = "<group>"; };
+		8FB79B72282096B500C101D3 /* FWFScriptMessageHandlerHostApiTests.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = FWFScriptMessageHandlerHostApiTests.m; sourceTree = "<group>"; };
+		8FB79B7828209D1300C101D3 /* FWFUserContentControllerHostApiTests.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = FWFUserContentControllerHostApiTests.m; sourceTree = "<group>"; };
+		8FB79B822820A39300C101D3 /* FWFNavigationDelegateHostApiTests.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = FWFNavigationDelegateHostApiTests.m; sourceTree = "<group>"; };
+		8FB79B842820A3A400C101D3 /* FWFUIDelegateHostApiTests.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = FWFUIDelegateHostApiTests.m; sourceTree = "<group>"; };
+		8FB79B8E2820BAB300C101D3 /* FWFScrollViewHostApiTests.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = FWFScrollViewHostApiTests.m; sourceTree = "<group>"; };
+		8FB79B902820BAC700C101D3 /* FWFUIViewHostApiTests.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = FWFUIViewHostApiTests.m; sourceTree = "<group>"; };
+		8FB79B962821985200C101D3 /* FWFObjectHostApiTests.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = FWFObjectHostApiTests.m; sourceTree = "<group>"; };
 		9740EEB21CF90195004384FC /* Debug.xcconfig */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.xcconfig; name = Debug.xcconfig; path = Flutter/Debug.xcconfig; sourceTree = "<group>"; };
 		9740EEB31CF90195004384FC /* Generated.xcconfig */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.xcconfig; name = Generated.xcconfig; path = Flutter/Generated.xcconfig; sourceTree = "<group>"; };
 		97C146EE1CF9000F007C117D /* Runner.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = Runner.app; sourceTree = BUILT_PRODUCTS_DIR; };
@@ -135,6 +157,17 @@
 				8FA6A87828062CD000A4B183 /* FWFInstanceManagerTests.m */,
 				8FB79B5228134C3100C101D3 /* FWFWebViewHostApiTests.m */,
 				8FB79B54281B24F600C101D3 /* FWFDataConvertersTests.m */,
+				8FB79B662820453400C101D3 /* FWFHTTPCookieStoreHostApiTests.m */,
+				8FB79B6828204E8700C101D3 /* FWFPreferencesHostApiTests.m */,
+				8FB79B6A28204EE500C101D3 /* FWFWebsiteDataStoreHostApiTests.m */,
+				8FB79B6C2820533B00C101D3 /* FWFWebViewConfigurationHostApiTests.m */,
+				8FB79B72282096B500C101D3 /* FWFScriptMessageHandlerHostApiTests.m */,
+				8FB79B7828209D1300C101D3 /* FWFUserContentControllerHostApiTests.m */,
+				8FB79B822820A39300C101D3 /* FWFNavigationDelegateHostApiTests.m */,
+				8FB79B842820A3A400C101D3 /* FWFUIDelegateHostApiTests.m */,
+				8FB79B8E2820BAB300C101D3 /* FWFScrollViewHostApiTests.m */,
+				8FB79B902820BAC700C101D3 /* FWFUIViewHostApiTests.m */,
+				8FB79B962821985200C101D3 /* FWFObjectHostApiTests.m */,
 			);
 			path = RunnerTests;
 			sourceTree = "<group>";
@@ -433,11 +466,22 @@
 			buildActionMask = 2147483647;
 			files = (
 				8FA6A87928062CD000A4B183 /* FWFInstanceManagerTests.m in Sources */,
+				8FB79B852820A3A400C101D3 /* FWFUIDelegateHostApiTests.m in Sources */,
+				8FB79B972821985200C101D3 /* FWFObjectHostApiTests.m in Sources */,
+				8FB79B672820453400C101D3 /* FWFHTTPCookieStoreHostApiTests.m in Sources */,
 				8FB79B5328134C3100C101D3 /* FWFWebViewHostApiTests.m in Sources */,
+				8FB79B73282096B500C101D3 /* FWFScriptMessageHandlerHostApiTests.m in Sources */,
 				334734012669319100DCC49E /* FLTWebViewTests.m in Sources */,
+				8FB79B7928209D1300C101D3 /* FWFUserContentControllerHostApiTests.m in Sources */,
+				8FB79B6B28204EE500C101D3 /* FWFWebsiteDataStoreHostApiTests.m in Sources */,
+				8FB79B8F2820BAB300C101D3 /* FWFScrollViewHostApiTests.m in Sources */,
+				8FB79B912820BAC700C101D3 /* FWFUIViewHostApiTests.m in Sources */,
 				334734022669319400DCC49E /* FLTWKNavigationDelegateTests.m in Sources */,
 				8FB79B55281B24F600C101D3 /* FWFDataConvertersTests.m in Sources */,
+				8FB79B6D2820533B00C101D3 /* FWFWebViewConfigurationHostApiTests.m in Sources */,
+				8FB79B832820A39300C101D3 /* FWFNavigationDelegateHostApiTests.m in Sources */,
 				E43693B527512C0F00382F85 /* FLTCookieManagerTests.m in Sources */,
+				8FB79B6928204E8700C101D3 /* FWFPreferencesHostApiTests.m in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};

packages/webview_flutter/webview_flutter_wkwebview/example/ios/RunnerTests/FWFDataConvertersTests.m

@@ -10,7 +10,7 @@ @interface FWFDataConvertersTests : XCTestCase
 @end
 
 @implementation FWFDataConvertersTests
-- (void)testFNSURLRequestFromRequestData {
+- (void)testFWFNSURLRequestFromRequestData {
   NSURLRequest *request = FWFNSURLRequestFromRequestData([FWFNSUrlRequestData
               makeWithUrl:@"https://flutter.dev"
                httpMethod:@"post"
@@ -22,4 +22,25 @@ - (void)testFNSURLRequestFromRequestData {
   XCTAssertEqualObjects(request.HTTPBody, [NSData data]);
   XCTAssertEqualObjects(request.allHTTPHeaderFields, @{@"a" : @"header"});
 }
+
+- (void)testFWFNSHTTPCookieFromCookieData {
+  NSHTTPCookie *cookie = FWFNSHTTPCookieFromCookieData([FWFNSHttpCookieData
+      makeWithPropertyKeys:@[ [FWFNSHttpCookiePropertyKeyEnumData
+                               makeWithValue:FWFNSHttpCookiePropertyKeyEnumName] ]
+            propertyValues:@[ @"cookieName" ]]);
+  XCTAssertEqualObjects(cookie,
+                        [NSHTTPCookie cookieWithProperties:@{NSHTTPCookieName : @"cookieName"}]);
+}
+
+- (void)testFWFWKUserScriptFromScriptData {
+  WKUserScript *userScript = FWFWKUserScriptFromScriptData([FWFWKUserScriptData
+       makeWithSource:@"mySource"
+        injectionTime:[FWFWKUserScriptInjectionTimeEnumData
+                          makeWithValue:FWFWKUserScriptInjectionTimeEnumAtDocumentStart]
+      isMainFrameOnly:@NO]);
+
+  XCTAssertEqualObjects(userScript.source, @"mySource");
+  XCTAssertEqual(userScript.injectionTime, WKUserScriptInjectionTimeAtDocumentStart);
+  XCTAssertEqual(userScript.isForMainFrameOnly, NO);
+}
 @end

packages/webview_flutter/webview_flutter_wkwebview/example/ios/RunnerTests/FWFHTTPCookieStoreHostApiTests.m

@@ -0,0 +1,55 @@
+// Copyright 2013 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+@import Flutter;
+@import XCTest;
+@import webview_flutter_wkwebview;
+
+#import <OCMock/OCMock.h>
+
+@interface FWFHTTPCookieStoreHostApiTests : XCTestCase
+@end
+
+@implementation FWFHTTPCookieStoreHostApiTests
+- (void)testCreateFromWebsiteDataStoreWithIdentifier API_AVAILABLE(ios(11.0)) {
+  FWFInstanceManager *instanceManager = [[FWFInstanceManager alloc] init];
+  FWFHTTPCookieStoreHostApiImpl *hostApi =
+      [[FWFHTTPCookieStoreHostApiImpl alloc] initWithInstanceManager:instanceManager];
+
+  WKWebsiteDataStore *mockDataStore = OCMClassMock([WKWebsiteDataStore class]);
+  OCMStub([mockDataStore httpCookieStore]).andReturn(OCMClassMock([WKHTTPCookieStore class]));
+  [instanceManager addInstance:mockDataStore withIdentifier:0];
+
+  FlutterError *error;
+  [hostApi createFromWebsiteDataStoreWithIdentifier:@1 dataStoreIdentifier:@0 error:&error];
+  WKHTTPCookieStore *cookieStore = (WKHTTPCookieStore *)[instanceManager instanceForIdentifier:1];
+  XCTAssertTrue([cookieStore isKindOfClass:[WKHTTPCookieStore class]]);
+  XCTAssertNil(error);
+}
+
+- (void)testSetCookie API_AVAILABLE(ios(11.0)) {
+  WKHTTPCookieStore *mockHttpCookieStore = OCMClassMock([WKHTTPCookieStore class]);
+
+  FWFInstanceManager *instanceManager = [[FWFInstanceManager alloc] init];
+  [instanceManager addInstance:mockHttpCookieStore withIdentifier:0];
+
+  FWFHTTPCookieStoreHostApiImpl *hostApi =
+      [[FWFHTTPCookieStoreHostApiImpl alloc] initWithInstanceManager:instanceManager];
+
+  FWFNSHttpCookieData *cookieData = [FWFNSHttpCookieData
+      makeWithPropertyKeys:@[ [FWFNSHttpCookiePropertyKeyEnumData
+                               makeWithValue:FWFNSHttpCookiePropertyKeyEnumName] ]
+            propertyValues:@[ @"hello" ]];
+  FlutterError *__block blockError;
+  [hostApi setCookieForStoreWithIdentifier:@0
+                                    cookie:cookieData
+                                completion:^(FlutterError *error) {
+                                  blockError = error;
+                                }];
+  OCMVerify([mockHttpCookieStore
+              setCookie:[NSHTTPCookie cookieWithProperties:@{NSHTTPCookieName : @"hello"}]
+      completionHandler:OCMOCK_ANY]);
+  XCTAssertNil(blockError);
+}
+@end

packages/webview_flutter/webview_flutter_wkwebview/example/ios/RunnerTests/FWFNavigationDelegateHostApiTests.m

@@ -0,0 +1,28 @@
+// Copyright 2013 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+@import Flutter;
+@import XCTest;
+@import webview_flutter_wkwebview;
+
+#import <OCMock/OCMock.h>
+
+@interface FWFNavigationDelegateHostApiTests : XCTestCase
+@end
+
+@implementation FWFNavigationDelegateHostApiTests
+- (void)testCreateWithIdentifier {
+  FWFInstanceManager *instanceManager = [[FWFInstanceManager alloc] init];
+  FWFNavigationDelegateHostApiImpl *hostApi =
+      [[FWFNavigationDelegateHostApiImpl alloc] initWithInstanceManager:instanceManager];
+
+  FlutterError *error;
+  [hostApi createWithIdentifier:@0 error:&error];
+  FWFNavigationDelegate *navigationDelegate =
+      (FWFNavigationDelegate *)[instanceManager instanceForIdentifier:0];
+
+  XCTAssertTrue([navigationDelegate conformsToProtocol:@protocol(WKNavigationDelegate)]);
+  XCTAssertNil(error);
+}
+@end

packages/webview_flutter/webview_flutter_wkwebview/example/ios/RunnerTests/FWFObjectHostApiTests.m

@@ -0,0 +1,82 @@
+// Copyright 2013 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+@import Flutter;
+@import XCTest;
+@import webview_flutter_wkwebview;
+
+#import <OCMock/OCMock.h>
+
+@interface FWFObjectHostApiTests : XCTestCase
+@end
+
+@implementation FWFObjectHostApiTests
+- (void)testAddObserver {
+  NSObject *mockObject = OCMClassMock([NSObject class]);
+
+  FWFInstanceManager *instanceManager = [[FWFInstanceManager alloc] init];
+  [instanceManager addInstance:mockObject withIdentifier:0];
+
+  FWFObjectHostApiImpl *hostApi =
+      [[FWFObjectHostApiImpl alloc] initWithInstanceManager:instanceManager];
+
+  NSObject *observerObject = [[NSObject alloc] init];
+  [instanceManager addInstance:observerObject withIdentifier:1];
+
+  FlutterError *error;
+  [hostApi
+      addObserverForObjectWithIdentifier:@0
+                      observerIdentifier:@1
+                                 keyPath:@"myKey"
+                                 options:@[
+                                   [FWFNSKeyValueObservingOptionsEnumData
+                                       makeWithValue:FWFNSKeyValueObservingOptionsEnumOldValue],
+                                   [FWFNSKeyValueObservingOptionsEnumData
+                                       makeWithValue:FWFNSKeyValueObservingOptionsEnumNewValue]
+                                 ]
+                                   error:&error];
+
+  OCMVerify([mockObject addObserver:observerObject
+                         forKeyPath:@"myKey"
+                            options:(NSKeyValueObservingOptionOld | NSKeyValueObservingOptionNew)
+                            context:nil]);
+  XCTAssertNil(error);
+}
+
+- (void)testRemoveObserver {
+  NSObject *mockObject = OCMClassMock([NSObject class]);
+
+  FWFInstanceManager *instanceManager = [[FWFInstanceManager alloc] init];
+  [instanceManager addInstance:mockObject withIdentifier:0];
+
+  FWFObjectHostApiImpl *hostApi =
+      [[FWFObjectHostApiImpl alloc] initWithInstanceManager:instanceManager];
+
+  NSObject *observerObject = [[NSObject alloc] init];
+  [instanceManager addInstance:observerObject withIdentifier:1];
+
+  FlutterError *error;
+  [hostApi removeObserverForObjectWithIdentifier:@0
+                              observerIdentifier:@1
+                                         keyPath:@"myKey"
+                                           error:&error];
+  OCMVerify([mockObject removeObserver:observerObject forKeyPath:@"myKey"]);
+  XCTAssertNil(error);
+}
+
+- (void)testDispose {
+  NSObject *object = [[NSObject alloc] init];
+
+  FWFInstanceManager *instanceManager = [[FWFInstanceManager alloc] init];
+  [instanceManager addInstance:object withIdentifier:0];
+
+  FWFObjectHostApiImpl *hostApi =
+      [[FWFObjectHostApiImpl alloc] initWithInstanceManager:instanceManager];
+
+  FlutterError *error;
+  [hostApi disposeObjectWithIdentifier:@0 error:&error];
+  XCTAssertEqual([instanceManager identifierForInstance:object], NSNotFound);
+  XCTAssertNil(error);
+}
+@end

packages/webview_flutter/webview_flutter_wkwebview/example/ios/RunnerTests/FWFPreferencesHostApiTests.m

@@ -0,0 +1,43 @@
+// Copyright 2013 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+@import Flutter;
+@import XCTest;
+@import webview_flutter_wkwebview;
+
+#import <OCMock/OCMock.h>
+
+@interface FWFPreferencesHostApiTests : XCTestCase
+@end
+
+@implementation FWFPreferencesHostApiTests
+- (void)testCreateFromWebViewConfigurationWithIdentifier {
+  FWFInstanceManager *instanceManager = [[FWFInstanceManager alloc] init];
+  FWFPreferencesHostApiImpl *hostApi =
+      [[FWFPreferencesHostApiImpl alloc] initWithInstanceManager:instanceManager];
+
+  [instanceManager addInstance:[[WKWebViewConfiguration alloc] init] withIdentifier:0];
+
+  FlutterError *error;
+  [hostApi createFromWebViewConfigurationWithIdentifier:@1 configurationIdentifier:@0 error:&error];
+  WKPreferences *preferences = (WKPreferences *)[instanceManager instanceForIdentifier:1];
+  XCTAssertTrue([preferences isKindOfClass:[WKPreferences class]]);
+  XCTAssertNil(error);
+}
+
+- (void)testSetJavaScriptEnabled {
+  WKPreferences *mockPreferences = OCMClassMock([WKPreferences class]);
+
+  FWFInstanceManager *instanceManager = [[FWFInstanceManager alloc] init];
+  [instanceManager addInstance:mockPreferences withIdentifier:0];
+
+  FWFPreferencesHostApiImpl *hostApi =
+      [[FWFPreferencesHostApiImpl alloc] initWithInstanceManager:instanceManager];
+
+  FlutterError *error;
+  [hostApi setJavaScriptEnabledForPreferencesWithIdentifier:@0 isEnabled:@YES error:&error];
+  OCMVerify([mockPreferences setJavaScriptEnabled:YES]);
+  XCTAssertNil(error);
+}
+@end

packages/webview_flutter/webview_flutter_wkwebview/example/ios/RunnerTests/FWFScriptMessageHandlerHostApiTests.m

@@ -0,0 +1,29 @@
+// Copyright 2013 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+@import Flutter;
+@import XCTest;
+@import webview_flutter_wkwebview;
+
+#import <OCMock/OCMock.h>
+
+@interface FWFScriptMessageHandlerHostApiTests : XCTestCase
+@end
+
+@implementation FWFScriptMessageHandlerHostApiTests
+- (void)testCreateWithIdentifier {
+  FWFInstanceManager *instanceManager = [[FWFInstanceManager alloc] init];
+  FWFScriptMessageHandlerHostApiImpl *hostApi =
+      [[FWFScriptMessageHandlerHostApiImpl alloc] initWithInstanceManager:instanceManager];
+
+  FlutterError *error;
+  [hostApi createWithIdentifier:@0 error:&error];
+
+  FWFScriptMessageHandler *scriptMessageHandler =
+      (FWFScriptMessageHandler *)[instanceManager instanceForIdentifier:0];
+
+  XCTAssertTrue([scriptMessageHandler conformsToProtocol:@protocol(WKScriptMessageHandler)]);
+  XCTAssertNil(error);
+}
+@end