603 lines
22 KiB
Swift
603 lines
22 KiB
Swift
//
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// Copyright 2024 New Vector Ltd
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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import Foundation
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import XCTest
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@testable import Element
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class DecryptionFailureTrackerTests: XCTestCase {
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class TimeShifter: TimeProvider {
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var timestamp = TimeInterval(0)
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func nowTs() -> TimeInterval {
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return timestamp
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}
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}
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class AnalyticsDelegate : E2EAnalytics {
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var reportedFailure: Element.DecryptionFailure?;
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func trackE2EEError(_ reason: Element.DecryptionFailure) {
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reportedFailure = reason
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}
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}
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let timeShifter = TimeShifter()
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var fakeCrypto: FakeCrypto!
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var fakeSession: FakeSession!
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var fakeCrossSigning: FakeCrossSigning!
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override func setUp() {
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super.setUp()
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self.fakeCrypto = FakeCrypto()
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self.fakeCrossSigning = FakeCrossSigning()
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self.fakeCrypto.crossSigning = self.fakeCrossSigning
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self.fakeSession = FakeSession(mockCrypto: self.fakeCrypto)
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}
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func test_grace_period() {
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let myUser = "@test:example.com";
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fakeSession.mockUserId = myUser;
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let decryptionFailureTracker = DecryptionFailureTracker();
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decryptionFailureTracker.timeProvider = timeShifter;
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let testDelegate = AnalyticsDelegate();
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decryptionFailureTracker.delegate = testDelegate;
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timeShifter.timestamp = TimeInterval(0)
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let fakeEvent = FakeEvent(id: "$0000");
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fakeEvent.decryptionError = NSError(domain: MXDecryptingErrorDomain, code: Int(MXDecryptingErrorUnknownInboundSessionIdCode.rawValue))
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let fakeRoomState = FakeRoomState();
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fakeRoomState.mockMembers = FakeRoomMembers(joined: [myUser])
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decryptionFailureTracker.reportUnableToDecryptError(forEvent: fakeEvent, withRoomState: fakeRoomState, mySession: fakeSession);
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timeShifter.timestamp = TimeInterval(2)
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// simulate decrypted in the grace period
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NotificationCenter.default.post(name: .mxEventDidDecrypt, object: fakeEvent)
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decryptionFailureTracker.checkFailures();
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XCTAssertNil(testDelegate.reportedFailure);
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// Pass the grace period
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timeShifter.timestamp = TimeInterval(5)
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decryptionFailureTracker.checkFailures();
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XCTAssertNil(testDelegate.reportedFailure);
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}
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func test_report_ratcheted_key_utd() {
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let myUser = "@test:example.com";
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fakeSession.mockUserId = myUser;
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let decryptionFailureTracker = DecryptionFailureTracker();
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decryptionFailureTracker.timeProvider = timeShifter;
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let testDelegate = AnalyticsDelegate();
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decryptionFailureTracker.delegate = testDelegate;
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timeShifter.timestamp = TimeInterval(0)
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let fakeEvent = FakeEvent(id: "$0000");
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fakeEvent.decryptionError = NSError(domain: MXDecryptingErrorDomain, code: Int(MXDecryptingErrorOlmCode.rawValue))
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let fakeRoomState = FakeRoomState();
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fakeRoomState.mockMembers = FakeRoomMembers(joined: [myUser])
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decryptionFailureTracker.reportUnableToDecryptError(forEvent: fakeEvent, withRoomState: fakeRoomState, mySession: fakeSession);
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// Pass the max period
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timeShifter.timestamp = TimeInterval(70)
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decryptionFailureTracker.checkFailures();
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XCTAssertEqual(testDelegate.reportedFailure?.reason, DecryptionFailureReason.olmIndexError);
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}
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func test_report_unspecified_error() {
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let myUser = "@test:example.com";
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fakeSession.mockUserId = myUser;
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let decryptionFailureTracker = DecryptionFailureTracker();
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decryptionFailureTracker.timeProvider = timeShifter;
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let testDelegate = AnalyticsDelegate();
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decryptionFailureTracker.delegate = testDelegate;
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timeShifter.timestamp = TimeInterval(0)
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let fakeEvent = FakeEvent(id: "$0000");
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fakeEvent.decryptionError = NSError(domain: MXDecryptingErrorDomain, code: Int(MXDecryptingErrorBadRoomCode.rawValue))
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let fakeRoomState = FakeRoomState();
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fakeRoomState.mockMembers = FakeRoomMembers(joined: [myUser])
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decryptionFailureTracker.reportUnableToDecryptError(forEvent: fakeEvent, withRoomState: fakeRoomState, mySession: fakeSession);
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// Pass the max period
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timeShifter.timestamp = TimeInterval(70)
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decryptionFailureTracker.checkFailures();
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XCTAssertEqual(testDelegate.reportedFailure?.reason, DecryptionFailureReason.unspecified);
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}
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func test_do_not_double_report() {
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let myUser = "@test:example.com";
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fakeSession.mockUserId = myUser;
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let decryptionFailureTracker = DecryptionFailureTracker();
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decryptionFailureTracker.timeProvider = timeShifter;
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let testDelegate = AnalyticsDelegate();
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decryptionFailureTracker.delegate = testDelegate;
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timeShifter.timestamp = TimeInterval(0)
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let fakeEvent = FakeEvent(id: "$0000");
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fakeEvent.decryptionError = NSError(domain: MXDecryptingErrorDomain, code: Int(MXDecryptingErrorUnknownInboundSessionIdCode.rawValue))
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let fakeRoomState = FakeRoomState();
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fakeRoomState.mockMembers = FakeRoomMembers(joined: [myUser])
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decryptionFailureTracker.reportUnableToDecryptError(forEvent: fakeEvent, withRoomState: fakeRoomState, mySession: fakeSession);
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// Pass the max period
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timeShifter.timestamp = TimeInterval(70)
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decryptionFailureTracker.checkFailures();
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XCTAssertEqual(testDelegate.reportedFailure?.reason, DecryptionFailureReason.olmKeysNotSent);
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// Try to report again the same event
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testDelegate.reportedFailure = nil
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decryptionFailureTracker.reportUnableToDecryptError(forEvent: fakeEvent, withRoomState: fakeRoomState, mySession: fakeSession);
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// Pass the grace period
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timeShifter.timestamp = TimeInterval(10)
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decryptionFailureTracker.checkFailures();
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XCTAssertNil(testDelegate.reportedFailure);
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}
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func test_ignore_not_member() {
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let myUser = "@test:example.com";
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fakeSession.mockUserId = myUser;
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let decryptionFailureTracker = DecryptionFailureTracker();
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decryptionFailureTracker.timeProvider = timeShifter;
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let testDelegate = AnalyticsDelegate();
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decryptionFailureTracker.delegate = testDelegate;
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timeShifter.timestamp = TimeInterval(0)
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let fakeEvent = FakeEvent(id: "$0000");
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fakeEvent.decryptionError = NSError(domain: MXDecryptingErrorDomain, code: Int(MXDecryptingErrorUnknownInboundSessionIdCode.rawValue))
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let fakeRoomState = FakeRoomState();
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let fakeMembers = FakeRoomMembers()
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fakeMembers.mockMembers[myUser] = MXMembership.ban
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fakeRoomState.mockMembers = fakeMembers
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decryptionFailureTracker.reportUnableToDecryptError(forEvent: fakeEvent, withRoomState: fakeRoomState, mySession: fakeSession);
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// Pass the grace period
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timeShifter.timestamp = TimeInterval(5)
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decryptionFailureTracker.checkFailures();
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XCTAssertNil(testDelegate.reportedFailure);
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}
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func test_notification_center() {
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let myUser = "@test:example.com";
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fakeSession.mockUserId = myUser;
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let decryptionFailureTracker = DecryptionFailureTracker();
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decryptionFailureTracker.timeProvider = timeShifter;
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let testDelegate = AnalyticsDelegate();
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decryptionFailureTracker.delegate = testDelegate;
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timeShifter.timestamp = TimeInterval(0)
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let fakeEvent = FakeEvent(id: "$0000");
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fakeEvent.decryptionError = NSError(domain: MXDecryptingErrorDomain, code: Int(MXDecryptingErrorUnknownInboundSessionIdCode.rawValue))
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let fakeRoomState = FakeRoomState();
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fakeRoomState.mockMembers = FakeRoomMembers(joined: [myUser])
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decryptionFailureTracker.reportUnableToDecryptError(forEvent: fakeEvent, withRoomState: fakeRoomState, mySession: fakeSession);
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// Shift time below GRACE_PERIOD
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timeShifter.timestamp = TimeInterval(2)
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// Simulate event gets decrypted
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NotificationCenter.default.post(name: .mxEventDidDecrypt, object: fakeEvent)
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// Shift time after GRACE_PERIOD
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timeShifter.timestamp = TimeInterval(6)
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decryptionFailureTracker.checkFailures();
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// Event should have been graced
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XCTAssertNil(testDelegate.reportedFailure);
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}
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func test_should_report_late_decrypt() {
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let myUser = "@test:example.com";
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fakeSession.mockUserId = myUser;
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let decryptionFailureTracker = DecryptionFailureTracker();
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decryptionFailureTracker.timeProvider = timeShifter;
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let testDelegate = AnalyticsDelegate();
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decryptionFailureTracker.delegate = testDelegate;
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timeShifter.timestamp = TimeInterval(0)
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let fakeEvent = FakeEvent(id: "$0000");
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fakeEvent.decryptionError = NSError(domain: MXDecryptingErrorDomain, code: Int(MXDecryptingErrorUnknownInboundSessionIdCode.rawValue))
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let fakeRoomState = FakeRoomState();
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fakeRoomState.mockMembers = FakeRoomMembers(joined: [myUser])
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decryptionFailureTracker.reportUnableToDecryptError(forEvent: fakeEvent, withRoomState: fakeRoomState, mySession: fakeSession);
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// Simulate succesful decryption after grace period but before max wait
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timeShifter.timestamp = TimeInterval(20)
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// Simulate event gets decrypted
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NotificationCenter.default.post(name: .mxEventDidDecrypt, object: fakeEvent)
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decryptionFailureTracker.checkFailures();
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// Event should have been reported as a late decrypt
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XCTAssertEqual(testDelegate.reportedFailure?.reason, DecryptionFailureReason.olmKeysNotSent);
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XCTAssertEqual(testDelegate.reportedFailure?.timeToDecrypt, TimeInterval(20));
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// Assert that it's converted to millis for reporting
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let analyticsError = testDelegate.reportedFailure!.toAnalyticsEvent()
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XCTAssertEqual(analyticsError.timeToDecryptMillis, 20000)
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}
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func test_should_report_permanent_decryption_error() {
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let myUser = "@test:example.com";
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fakeSession.mockUserId = myUser;
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let decryptionFailureTracker = DecryptionFailureTracker();
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decryptionFailureTracker.timeProvider = timeShifter;
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let testDelegate = AnalyticsDelegate();
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decryptionFailureTracker.delegate = testDelegate;
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timeShifter.timestamp = TimeInterval(0)
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let fakeEvent = FakeEvent(id: "$0000");
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fakeEvent.decryptionError = NSError(domain: MXDecryptingErrorDomain, code: Int(MXDecryptingErrorUnknownInboundSessionIdCode.rawValue))
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let fakeRoomState = FakeRoomState();
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fakeRoomState.mockMembers = FakeRoomMembers(joined: [myUser])
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decryptionFailureTracker.reportUnableToDecryptError(forEvent: fakeEvent, withRoomState: fakeRoomState, mySession: fakeSession);
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// Simulate succesful decryption after max wait
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timeShifter.timestamp = TimeInterval(70)
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decryptionFailureTracker.checkFailures();
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// Event should have been reported as a late decrypt
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XCTAssertEqual(testDelegate.reportedFailure?.reason, DecryptionFailureReason.olmKeysNotSent);
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XCTAssertNil(testDelegate.reportedFailure?.timeToDecrypt);
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// Assert that it's converted to -1 for reporting
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let analyticsError = testDelegate.reportedFailure!.toAnalyticsEvent()
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XCTAssertEqual(analyticsError.timeToDecryptMillis, -1)
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}
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func test_should_report_trust_status_at_decryption_time() {
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let myUser = "@test:example.com";
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fakeSession.mockUserId = myUser;
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let decryptionFailureTracker = DecryptionFailureTracker();
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decryptionFailureTracker.timeProvider = timeShifter;
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let testDelegate = AnalyticsDelegate();
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decryptionFailureTracker.delegate = testDelegate;
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timeShifter.timestamp = TimeInterval(0)
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let fakeEvent = FakeEvent(id: "$0000");
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fakeEvent.decryptionError = NSError(domain: MXDecryptingErrorDomain, code: Int(MXDecryptingErrorUnknownInboundSessionIdCode.rawValue))
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// set session as not yet verified
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fakeCrossSigning.canTrustCrossSigning = false
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let fakeRoomState = FakeRoomState();
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fakeRoomState.mockMembers = FakeRoomMembers(joined: [myUser])
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decryptionFailureTracker.reportUnableToDecryptError(forEvent: fakeEvent, withRoomState: fakeRoomState, mySession: fakeSession);
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// set verified now
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fakeCrossSigning.canTrustCrossSigning = true
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// Simulate succesful decryption after max wait
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timeShifter.timestamp = TimeInterval(70)
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decryptionFailureTracker.checkFailures();
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// Event should have been reported as a late decrypt
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XCTAssertEqual(testDelegate.reportedFailure?.trustOwnIdentityAtTimeOfFailure, false);
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// Assert that it's converted to -1 for reporting
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let analyticsError = testDelegate.reportedFailure!.toAnalyticsEvent()
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XCTAssertEqual(analyticsError.userTrustsOwnIdentity, false)
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// Report a new error now that session is verified
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let fakeEvent2 = FakeEvent(id: "$0001");
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fakeEvent2.decryptionError = NSError(domain: MXDecryptingErrorDomain, code: Int(MXDecryptingErrorUnknownInboundSessionIdCode.rawValue))
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decryptionFailureTracker.reportUnableToDecryptError(forEvent: fakeEvent2, withRoomState: fakeRoomState, mySession: fakeSession);
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// Simulate permanent UTD
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timeShifter.timestamp = TimeInterval(140)
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decryptionFailureTracker.checkFailures();
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XCTAssertEqual(testDelegate.reportedFailure?.failedEventId, "$0001");
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XCTAssertEqual(testDelegate.reportedFailure?.trustOwnIdentityAtTimeOfFailure, true);
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let analyticsError2 = testDelegate.reportedFailure!.toAnalyticsEvent()
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XCTAssertEqual(analyticsError2.userTrustsOwnIdentity, true)
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}
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func test_should_report_event_age() {
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let myUser = "@test:example.com";
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fakeSession.mockUserId = myUser;
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let format = DateFormatter()
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format.dateFormat = "yyyy-MM-dd'T'HH:mm:ssZZZZZ"
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let sessionCreationTimeMillis = format.date(from: "2024-03-09T10:00:00Z")!.timeIntervalSince1970 * 1000
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let now = format.date(from: "2024-03-09T10:02:00Z")!.timeIntervalSince1970
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// 5mn after session was created
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let postCreationMessageTs = UInt64(format.date(from: "2024-03-09T10:05:00Z")!.timeIntervalSince1970 * 1000)
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let decryptionFailureTracker = DecryptionFailureTracker();
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decryptionFailureTracker.timeProvider = timeShifter;
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let testDelegate = AnalyticsDelegate();
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decryptionFailureTracker.delegate = testDelegate;
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timeShifter.timestamp = now
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let fakeEvent = FakeEvent(id: "$0000");
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fakeEvent.mockOrigineServerTs = postCreationMessageTs;
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fakeEvent.decryptionError = NSError(domain: MXDecryptingErrorDomain, code: Int(MXDecryptingErrorUnknownInboundSessionIdCode.rawValue))
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fakeCrypto.deviceCreationTs = UInt64(sessionCreationTimeMillis)
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let fakeRoomState = FakeRoomState();
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fakeRoomState.mockMembers = FakeRoomMembers(joined: [myUser])
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decryptionFailureTracker.reportUnableToDecryptError(forEvent: fakeEvent, withRoomState: fakeRoomState, mySession: fakeSession);
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// set verified now
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fakeCrossSigning.canTrustCrossSigning = true
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// Simulate permanent UTD
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timeShifter.timestamp = now + TimeInterval(70)
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decryptionFailureTracker.checkFailures();
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XCTAssertEqual(testDelegate.reportedFailure?.eventLocalAgeMillis, 5 * 60 * 1000);
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let analyticsError = testDelegate.reportedFailure!.toAnalyticsEvent()
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XCTAssertEqual(analyticsError.eventLocalAgeMillis, 5 * 60 * 1000)
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}
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func test_should_report_expected_utds() {
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let myUser = "@test:example.com";
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fakeSession.mockUserId = myUser;
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let format = DateFormatter()
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format.dateFormat = "yyyy-MM-dd'T'HH:mm:ssZZZZZ"
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let sessionCreationTimeMillis = format.date(from: "2024-03-09T10:00:00Z")!.timeIntervalSince1970 * 1000
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let now = format.date(from: "2024-03-09T10:02:00Z")!.timeIntervalSince1970
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// 1 day before session was created
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let historicalMessageTs = UInt64(format.date(from: "2024-03-08T10:00:00Z")!.timeIntervalSince1970 * 1000)
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let decryptionFailureTracker = DecryptionFailureTracker();
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decryptionFailureTracker.timeProvider = timeShifter;
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let testDelegate = AnalyticsDelegate();
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decryptionFailureTracker.delegate = testDelegate;
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timeShifter.timestamp = now
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let fakeEvent = FakeEvent(id: "$0000");
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fakeEvent.mockOrigineServerTs = historicalMessageTs;
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fakeEvent.decryptionError = NSError(domain: MXDecryptingErrorDomain, code: Int(MXDecryptingErrorUnknownInboundSessionIdCode.rawValue))
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fakeCrypto.deviceCreationTs = UInt64(sessionCreationTimeMillis)
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let fakeRoomState = FakeRoomState();
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fakeRoomState.mockMembers = FakeRoomMembers(joined: [myUser])
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fakeCrossSigning.canTrustCrossSigning = false
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decryptionFailureTracker.reportUnableToDecryptError(forEvent: fakeEvent, withRoomState: fakeRoomState, mySession: fakeSession);
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// set verified now
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fakeCrossSigning.canTrustCrossSigning = true
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// Simulate permanent UTD
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timeShifter.timestamp = now + TimeInterval(70)
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decryptionFailureTracker.checkFailures();
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// Event should have been reported as a late decrypt
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XCTAssertEqual(testDelegate.reportedFailure?.eventLocalAgeMillis, -24 * 60 * 60 * 1000);
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let analyticsError = testDelegate.reportedFailure!.toAnalyticsEvent()
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XCTAssertEqual(analyticsError.name, .HistoricalMessage)
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}
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func test_should_report_is_matrix_org_and_is_federated() {
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let myUser = "@test:example.com";
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fakeSession.mockUserId = myUser;
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let decryptionFailureTracker = DecryptionFailureTracker();
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decryptionFailureTracker.timeProvider = timeShifter;
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let testDelegate = AnalyticsDelegate();
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decryptionFailureTracker.delegate = testDelegate;
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timeShifter.timestamp = TimeInterval(0)
|
|
|
|
let fakeEvent = FakeEvent(id: "$0000");
|
|
fakeEvent.sender = "@bob:example.com"
|
|
fakeEvent.decryptionError = NSError(domain: MXDecryptingErrorDomain, code: Int(MXDecryptingErrorUnknownInboundSessionIdCode.rawValue))
|
|
|
|
// set session as not yet verified
|
|
fakeCrossSigning.canTrustCrossSigning = false
|
|
|
|
let fakeRoomState = FakeRoomState();
|
|
fakeRoomState.mockMembers = FakeRoomMembers(joined: [myUser])
|
|
|
|
decryptionFailureTracker.reportUnableToDecryptError(forEvent: fakeEvent, withRoomState: fakeRoomState, mySession: fakeSession);
|
|
|
|
// Simulate succesful decryption after max wait
|
|
timeShifter.timestamp = TimeInterval(70)
|
|
|
|
decryptionFailureTracker.checkFailures();
|
|
|
|
XCTAssertEqual(testDelegate.reportedFailure?.isMatrixOrg, false);
|
|
XCTAssertEqual(testDelegate.reportedFailure?.isFederated, false);
|
|
|
|
|
|
let analyticsError = testDelegate.reportedFailure!.toAnalyticsEvent()
|
|
|
|
XCTAssertEqual(analyticsError.isMatrixDotOrg, false)
|
|
XCTAssertEqual(analyticsError.isFederated, false)
|
|
|
|
// Report a new error now that session is verified
|
|
|
|
let fakeEvent2 = FakeEvent(id: "$0001");
|
|
fakeEvent2.sender = "@bob:example.com"
|
|
fakeEvent2.decryptionError = NSError(domain: MXDecryptingErrorDomain, code: Int(MXDecryptingErrorUnknownInboundSessionIdCode.rawValue))
|
|
|
|
fakeSession.mockUserId = "@test:matrix.org";
|
|
fakeRoomState.mockMembers = FakeRoomMembers(joined: [fakeSession.mockUserId])
|
|
|
|
decryptionFailureTracker.reportUnableToDecryptError(forEvent: fakeEvent2, withRoomState: fakeRoomState, mySession: fakeSession);
|
|
|
|
// Simulate permanent UTD
|
|
timeShifter.timestamp = TimeInterval(140)
|
|
|
|
decryptionFailureTracker.checkFailures();
|
|
|
|
XCTAssertEqual(testDelegate.reportedFailure?.failedEventId, "$0001");
|
|
XCTAssertEqual(testDelegate.reportedFailure?.isMatrixOrg, true);
|
|
XCTAssertEqual(testDelegate.reportedFailure?.isFederated, true);
|
|
|
|
let analyticsError2 = testDelegate.reportedFailure!.toAnalyticsEvent()
|
|
|
|
XCTAssertEqual(analyticsError2.isMatrixDotOrg, true)
|
|
XCTAssertEqual(analyticsError2.isFederated, true)
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|