[in_app_purchase] Implements transaction caching for StoreKit (flutter#4985)

Author: mvanbeusekom

packages/in_app_purchase/in_app_purchase_storekit/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.3.0+3
+
+* Implements transaction caching for StoreKit ensuring transactions are delivered to the Flutter client.
+
 ## 0.3.0+2
 
 * Internal code cleanup for stricter analysis options.

packages/in_app_purchase/in_app_purchase_storekit/example/ios/Runner.xcodeproj/project.pbxproj

@@ -3,7 +3,7 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 46;
+	objectVersion = 50;
 	objects = {
 
 /* Begin PBXBuildFile section */
@@ -22,6 +22,7 @@
 		A5279298219369C600FF69E6 /* StoreKit.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = A5279297219369C600FF69E6 /* StoreKit.framework */; };
 		A59001A721E69658004A3E5E /* InAppPurchasePluginTests.m in Sources */ = {isa = PBXBuildFile; fileRef = A59001A621E69658004A3E5E /* InAppPurchasePluginTests.m */; };
 		F67646F82681D9A80048C2EA /* FIAPPaymentQueueDeleteTests.m in Sources */ = {isa = PBXBuildFile; fileRef = F67646F72681D9A80048C2EA /* FIAPPaymentQueueDeleteTests.m */; };
+		F6995BDD27CF73000050EA78 /* FIATransactionCacheTests.m in Sources */ = {isa = PBXBuildFile; fileRef = F6995BDC27CF73000050EA78 /* FIATransactionCacheTests.m */; };
 		F78AF3142342BC89008449C7 /* PaymentQueueTests.m in Sources */ = {isa = PBXBuildFile; fileRef = F78AF3132342BC89008449C7 /* PaymentQueueTests.m */; };
 /* End PBXBuildFile section */
 
@@ -78,6 +79,7 @@
 		A59001A821E69658004A3E5E /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
 		E4F9651425A612301059769C /* Pods-Runner.debug.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-Runner.debug.xcconfig"; path = "Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig"; sourceTree = "<group>"; };
 		F67646F72681D9A80048C2EA /* FIAPPaymentQueueDeleteTests.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = FIAPPaymentQueueDeleteTests.m; sourceTree = "<group>"; };
+		F6995BDC27CF73000050EA78 /* FIATransactionCacheTests.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = FIATransactionCacheTests.m; sourceTree = "<group>"; };
 		F6E5D5F926131C4800C68BED /* Configuration.storekit */ = {isa = PBXFileReference; lastKnownFileType = text; path = Configuration.storekit; sourceTree = "<group>"; };
 		F78AF3132342BC89008449C7 /* PaymentQueueTests.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = PaymentQueueTests.m; sourceTree = "<group>"; };
 /* End PBXFileReference section */
@@ -190,6 +192,7 @@
 				F78AF3132342BC89008449C7 /* PaymentQueueTests.m */,
 				688DE35021F2A5A100EA2684 /* TranslatorTests.m */,
 				F67646F72681D9A80048C2EA /* FIAPPaymentQueueDeleteTests.m */,
+				F6995BDC27CF73000050EA78 /* FIATransactionCacheTests.m */,
 			);
 			path = RunnerTests;
 			sourceTree = "<group>";
@@ -254,7 +257,7 @@
 			isa = PBXProject;
 			attributes = {
 				DefaultBuildSystemTypeForWorkspace = Original;
-				LastUpgradeCheck = 1100;
+				LastUpgradeCheck = 1300;
 				ORGANIZATIONNAME = "The Flutter Authors";
 				TargetAttributes = {
 					97C146ED1CF9000F007C117D = {
@@ -406,6 +409,7 @@
 				F67646F82681D9A80048C2EA /* FIAPPaymentQueueDeleteTests.m in Sources */,
 				6896B34621E9363700D37AEF /* ProductRequestHandlerTests.m in Sources */,
 				688DE35121F2A5A100EA2684 /* TranslatorTests.m in Sources */,
+				F6995BDD27CF73000050EA78 /* FIATransactionCacheTests.m in Sources */,
 				A59001A721E69658004A3E5E /* InAppPurchasePluginTests.m in Sources */,
 				6896B34C21EEB4B800D37AEF /* Stubs.m in Sources */,
 			);

packages/in_app_purchase/in_app_purchase_storekit/example/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1100"
+   LastUpgradeVersion = "1300"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"

packages/in_app_purchase/in_app_purchase_storekit/example/ios/RunnerTests/FIATransactionCacheTests.m

@@ -0,0 +1,63 @@
+// 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 <XCTest/XCTest.h>
+
+@import in_app_purchase_storekit;
+
+@interface FIATransactionCacheTests : XCTestCase
+
+@end
+
+@implementation FIATransactionCacheTests
+
+- (void)testAddObjectsForNewKey {
+  NSArray *dummyArray = @[ @1, @2, @3 ];
+  FIATransactionCache *cache = [[FIATransactionCache alloc] init];
+  [cache addObjects:dummyArray forKey:TransactionCacheKeyUpdatedTransactions];
+
+  XCTAssertEqual(dummyArray, [cache getObjectsForKey:TransactionCacheKeyUpdatedTransactions]);
+}
+
+- (void)testAddObjectsForExistingKey {
+  NSArray *dummyArray = @[ @1, @2, @3 ];
+  FIATransactionCache *cache = [[FIATransactionCache alloc] init];
+  [cache addObjects:dummyArray forKey:TransactionCacheKeyUpdatedTransactions];
+
+  XCTAssertEqual(dummyArray, [cache getObjectsForKey:TransactionCacheKeyUpdatedTransactions]);
+
+  [cache addObjects:@[ @4, @5, @6 ] forKey:TransactionCacheKeyUpdatedTransactions];
+
+  NSArray *expected = @[ @1, @2, @3, @4, @5, @6 ];
+  XCTAssertEqualObjects(expected, [cache getObjectsForKey:TransactionCacheKeyUpdatedTransactions]);
+}
+
+- (void)testGetObjectsForNonExistingKey {
+  FIATransactionCache *cache = [[FIATransactionCache alloc] init];
+  XCTAssertNil([cache getObjectsForKey:TransactionCacheKeyUpdatedTransactions]);
+}
+
+- (void)testClear {
+  NSArray *fakeUpdatedTransactions = @[ @1, @2, @3 ];
+  NSArray *fakeRemovedTransactions = @[ @"Remove 1", @"Remove 2", @"Remove 3" ];
+  NSArray *fakeUpdatedDownloads = @[ @"Download 1", @"Download 2" ];
+  FIATransactionCache *cache = [[FIATransactionCache alloc] init];
+  [cache addObjects:fakeUpdatedTransactions forKey:TransactionCacheKeyUpdatedTransactions];
+  [cache addObjects:fakeRemovedTransactions forKey:TransactionCacheKeyRemovedTransactions];
+  [cache addObjects:fakeUpdatedDownloads forKey:TransactionCacheKeyUpdatedDownloads];
+
+  XCTAssertEqual(fakeUpdatedTransactions,
+                 [cache getObjectsForKey:TransactionCacheKeyUpdatedTransactions]);
+  XCTAssertEqual(fakeRemovedTransactions,
+                 [cache getObjectsForKey:TransactionCacheKeyRemovedTransactions]);
+  XCTAssertEqual(fakeUpdatedDownloads,
+                 [cache getObjectsForKey:TransactionCacheKeyUpdatedDownloads]);
+
+  [cache clear];
+
+  XCTAssertNil([cache getObjectsForKey:TransactionCacheKeyUpdatedTransactions]);
+  XCTAssertNil([cache getObjectsForKey:TransactionCacheKeyRemovedTransactions]);
+  XCTAssertNil([cache getObjectsForKey:TransactionCacheKeyUpdatedDownloads]);
+}
+@end