create tests

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

@@ -12,6 +12,22 @@ @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]);
 

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

@@ -12,6 +12,19 @@ @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]);
@@ -31,5 +44,4 @@ - (void)testSetJavaScriptEnabled {
   ]);
   XCTAssertNil(error);
 }
-
 @end

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

@@ -12,6 +12,20 @@ @interface FWFWebViewHostApiTests : XCTestCase
 @end
 
 @implementation FWFWebViewHostApiTests
+- (void)testCreateWithIdentifier {
+  FWFInstanceManager *instanceManager = [[FWFInstanceManager alloc] init];
+  FWFWebViewHostApiImpl *hostApi =
+      [[FWFWebViewHostApiImpl alloc] initWithInstanceManager:instanceManager];
+
+  [instanceManager addInstance:[[WKWebViewConfiguration alloc] init] withIdentifier:0];
+
+  FlutterError *error;
+  [hostApi createWithIdentifier:@1 configurationIdentifier:@0 error:&error];
+  WKWebView *webView = (WKWebView *) [instanceManager instanceForIdentifier:1];
+  XCTAssertTrue([webView isKindOfClass:[WKWebView class]]);
+  XCTAssertNil(error);
+}
+
 - (void)testLoadRequest {
   FWFWebView *mockWebView = OCMClassMock([FWFWebView class]);
 

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

@@ -12,6 +12,32 @@ @interface FWFWebsiteDataStoreHostApiTests : XCTestCase
 @end
 
 @implementation FWFWebsiteDataStoreHostApiTests
+- (void)testCreateFromWebViewConfigurationWithIdentifier {
+  FWFInstanceManager *instanceManager = [[FWFInstanceManager alloc] init];
+  FWFWebsiteDataStoreHostApiImpl *hostApi =
+      [[FWFWebsiteDataStoreHostApiImpl alloc] initWithInstanceManager:instanceManager];
+
+  [instanceManager addInstance:[[WKWebViewConfiguration alloc] init] withIdentifier:0];
+
+  FlutterError *error;
+  [hostApi createFromWebViewConfigurationWithIdentifier:@1 configurationIdentifier:@0 error:&error];
+  WKWebsiteDataStore *dataStore = (WKWebsiteDataStore *) [instanceManager instanceForIdentifier:1];
+  XCTAssertTrue([dataStore isKindOfClass:[WKWebsiteDataStore class]]);
+  XCTAssertNil(error);
+}
+
+- (void)testCreateDefaultDataStoreWithIdentifier {
+  FWFInstanceManager *instanceManager = [[FWFInstanceManager alloc] init];
+  FWFWebsiteDataStoreHostApiImpl *hostApi =
+      [[FWFWebsiteDataStoreHostApiImpl alloc] initWithInstanceManager:instanceManager];
+
+  FlutterError *error;
+  [hostApi createDefaultDataStoreWithIdentifier:@0 error:&error];
+  WKWebsiteDataStore *dataStore = (WKWebsiteDataStore *) [instanceManager instanceForIdentifier:0];
+  XCTAssertEqualObjects(dataStore, [WKWebsiteDataStore defaultDataStore]);
+  XCTAssertNil(error);
+}
+
 - (void)testRemoveDataOfTypes {
   WKWebsiteDataStore *mockWebsiteDataStore = OCMClassMock([WKWebsiteDataStore class]);