'Testing iOS app with external hardware' by Viacheslav Volodko

This talk was made for CocoaHeads Kyiv #13 which took place Dec 16 2017.

Transcript

2. TESTING IOS APP WITH EXTERNAL HARDWARE VIACHESLAV VOLODKO IOS ENGINEER #cocoaheadsukraine
3. TESTING IOS APP WITH EXTERNAL HARDWARE TL; DR WRITE F**KING TESTS
4. TESTING IOS APP WITH EXTERNAL HARDWARE THE PROBLEM
5. TESTING IOS APP WITH EXTERNAL HARDWARE THE PROBLEM
6. TESTING IOS APP WITH EXTERNAL HARDWARE THE PROBLEM
7. TESTING IOS APP WITH EXTERNAL HARDWARE THE PROBLEM
8. TESTING IOS APP WITH EXTERNAL HARDWARE THE PROBLEM
9. TESTING IOS APP WITH EXTERNAL HARDWARE THE PROBLEM Bluetooth LE WiFi Cable Connection Bluetooth Classic
10. TESTING IOS APP WITH EXTERNAL HARDWARE THE PROBLEM Bluetooth LE WiFi Cable Connection Bluetooth Classic
11. TESTING IOS APP WITH EXTERNAL HARDWARE THE PROBLEM Bluetooth LE WiFi Cable Connection Bluetooth Classic
12. TESTING IOS APP WITH EXTERNAL HARDWARE THE PROBLEM Bluetooth LE WiFi Cable Connection Bluetooth Classic JSON/XML
13. TESTING IOS APP WITH EXTERNAL HARDWARE THE PROBLEM Bluetooth LE WiFi Cable Connection Bluetooth Classic JSON/XML HTTP
14. TESTING IOS APP WITH EXTERNAL HARDWARE THE PROBLEM Bluetooth LE WiFi Cable Connection Bluetooth Classic JSON/XML HTTP TCP/IP
15. TESTING IOS APP WITH EXTERNAL HARDWARE THE PROBLEM JSON/XML HTTP TCP/IP Packetization Bluetooth LE WiFi Cable Connection Bluetooth Classic
16. TESTING IOS APP WITH EXTERNAL HARDWARE THE PROBLEM
17. TESTING IOS APP WITH EXTERNAL HARDWARE THE PROBLEM
18. TESTING IOS APP WITH EXTERNAL HARDWARE THE PROBLEM Backend https
19. TESTING IOS APP WITH EXTERNAL HARDWARE THE PROBLEM Backend https v.1.0.0 v.1.1.0 v.2.0.0 v.2.1.0
20. TESTING IOS APP WITH EXTERNAL HARDWARE THE PROBLEM Backend https v.1.0.0 v.1.1.0 v.2.0.0 v.2.1.0 RESPONSIBLE FOR VERSIONING
21. TESTING IOS APP WITH EXTERNAL HARDWARE THE PROBLEM v.1.0.0 v.1.1.0 v.2.0.0 v.2.1.0
22. TESTING IOS APP WITH EXTERNAL HARDWARE THE PROBLEM
23. TESTING IOS APP WITH EXTERNAL HARDWARE THE PROBLEM Bluetooth LE WiFi Cable Connection Bluetooth Classic
24. TESTING IOS APP WITH EXTERNAL HARDWARE THE PROBLEM Bluetooth LE WiFi Cable Connection Bluetooth Classic v.1.0.0 v.1.1.0 v.2.0.0 v.2.1.0 Firmware
25. TESTING IOS APP WITH EXTERNAL HARDWARE THE PROBLEM Bluetooth LE WiFi Cable Connection Bluetooth Classic v.1.0.0 v.1.1.0 v.2.0.0 v.2.1.0 Firmware RESPONSIBLE FOR VERSIONING
26. TESTING IOS APP WITH EXTERNAL HARDWARE THE PROBLEM Bluetooth LE WiFi Cable Connection Bluetooth Classic RESPONSIBLE FOR VERSIONING
27. TESTING IOS APP WITH EXTERNAL HARDWARE THE PROBLEM Bluetooth LE WiFi Cable Connection Bluetooth Classic
28. TESTING IOS APP WITH EXTERNAL HARDWARE THE PROBLEM Bluetooth LE WiFi Cable Connection Bluetooth Classic
29. TESTING IOS APP WITH EXTERNAL HARDWARE RESOLUTION
31. TESTING IOS APP WITH EXTERNAL HARDWARE RESOLUTION: ARCHITECTURE
32. TESTING IOS APP WITH EXTERNAL HARDWARE RESOLUTION: ARCHITECTURE
33. TESTING IOS APP WITH EXTERNAL HARDWARE RESOLUTION: ARCHITECTURE Bluetooth LE WiFi Cable Connection Bluetooth Classic
34. TESTING IOS APP WITH EXTERNAL HARDWARE RESOLUTION: ARCHITECTURE Connectivity Layer Bluetooth LE WiFi Cable Connection Bluetooth Classic • System layer, e.g. Core Bluetooth
35. TESTING IOS APP WITH EXTERNAL HARDWARE RESOLUTION: ARCHITECTURE Connectivity Layer Bluetooth LE WiFi Cable Connection Bluetooth Classic Transport Layer • StateLESS layer • Request/Response • Device specific components • System layer, e.g. Core Bluetooth
36. TESTING IOS APP WITH EXTERNAL HARDWARE RESOLUTION: ARCHITECTURE Connectivity Layer Bluetooth LE WiFi Cable Connection Bluetooth Classic Transport Layer • StateLESS layer • Request/Response • Device specific components • System layer, e.g. Core Bluetooth Business Logic Layer • StateFULL layer • Device agnostic components
37. TESTING IOS APP WITH EXTERNAL HARDWARE RESOLUTION: ARCHITECTURE Connectivity Layer Bluetooth LE WiFi Cable Connection Bluetooth Classic Connectivity Layer Abstraction Transport Layer • StateLESS layer • Request/Response • Device specific components • System layer, e.g. Core Bluetooth Business Logic Layer • StateFULL layer • Device agnostic components
38. TESTING IOS APP WITH EXTERNAL HARDWARE UNIT TESTING Connectivity Layer Connectivity Layer Abstraction Transport Layer • StateLESS layer • Request/Response • Device specific components • System layer, e.g. Core Bluetooth Business Logic Layer • StateFULL layer • Device agnostic components
39. TESTING IOS APP WITH EXTERNAL HARDWARE UNIT TESTING Connectivity Layer Abstraction Transport Layer • StateLESS layer • Request/Response • Device specific components Business Logic Layer • StateFULL layer • Device agnostic components Mock Connectivity Layer
40. TESTING IOS APP WITH EXTERNAL HARDWARE UNIT TESTING Connectivity Layer Abstraction Transport Layer • StateLESS layer • Request/Response • Device specific components Mock Connectivity Layer Unit Tests Cases
41. Unit Tests Cases Mock Connectivity Layer TESTING IOS APP WITH EXTERNAL HARDWARE UNIT TESTING Connectivity Layer Abstraction Transport Layer • StateLESS layer • Request/Response • Device specific components
42. Unit Tests Cases Mock Connectivity Layer TESTING IOS APP WITH EXTERNAL HARDWARE UNIT TESTING Connectivity Layer Abstraction Transport Layer • StateLESS layer • Request/Response • Device specific components Business Logic Layer • StateFULL layer • Device agnostic components
43. Unit Tests Cases TESTING IOS APP WITH EXTERNAL HARDWARE UNIT TESTING Business Logic Layer • StateFULL layer • Device agnostic components Mock Transport Layer
44. TESTING IOS APP WITH EXTERNAL HARDWARE UNIT TESTING
45. TESTING IOS APP WITH EXTERNAL HARDWARE UNIT TESTING PROS CONS
46. TESTING IOS APP WITH EXTERNAL HARDWARE UNIT TESTING ▸ Easy to cover edge cases PROS CONS
47. TESTING IOS APP WITH EXTERNAL HARDWARE UNIT TESTING ▸ Easy to cover edge cases ▸ Increases code modularity PROS CONS
48. TESTING IOS APP WITH EXTERNAL HARDWARE UNIT TESTING ▸ Easy to cover edge cases ▸ Increases code modularity ▸ Decreases debugging time PROS CONS
49. TESTING IOS APP WITH EXTERNAL HARDWARE UNIT TESTING ▸ Easy to cover edge cases ▸ Increases code modularity ▸ Decreases debugging time ▸ Easily automated (CI) PROS CONS
50. TESTING IOS APP WITH EXTERNAL HARDWARE UNIT TESTING ▸ Easy to cover edge cases ▸ Increases code modularity ▸ Decreases debugging time ▸ Easily automated (CI) PROS ▸ Time consuming CONS
51. TESTING IOS APP WITH EXTERNAL HARDWARE UNIT TESTING ▸ Easy to cover edge cases ▸ Increases code modularity ▸ Decreases debugging time ▸ Easily automated (CI) PROS ▸ Time consuming ▸ Increases code complexity CONS
52. TESTING IOS APP WITH EXTERNAL HARDWARE UNIT TESTING ▸ Easy to cover edge cases ▸ Increases code modularity ▸ Decreases debugging time ▸ Easily automated (CI) PROS ▸ Time consuming ▸ Increases code complexity ▸ No real device in chain CONS
56. TESTING IOS APP WITH EXTERNAL HARDWARE INTEGRATION TESTING WITH REAL DEVICE Connectivity Layer Connectivity Layer Abstraction Transport Layer • StateLESS layer • Request/Response • Device specific components • System layer, e.g. Core Bluetooth Business Logic Layer • StateFULL layer • Device agnostic components
57. TESTING IOS APP WITH EXTERNAL HARDWARE INTEGRATION TESTING WITH REAL DEVICE Connectivity Layer Connectivity Layer Abstraction Transport Layer • StateLESS layer • Request/Response • Device specific components • System layer, e.g. Core Bluetooth Business Logic Layer • StateFULL layer • Device agnostic components Integration Tests
58. TESTING IOS APP WITH EXTERNAL HARDWARE INTEGRATION TESTING WITH REAL DEVICE Connectivity Layer Connectivity Layer Abstraction Transport Layer • StateLESS layer • Request/Response • Device specific components • System layer, e.g. Core Bluetooth Integration Tests
59. TESTING IOS APP WITH EXTERNAL HARDWARE INTEGRATION TESTING WITH REAL DEVICE
60. TESTING IOS APP WITH EXTERNAL HARDWARE INTEGRATION TESTING WITH REAL DEVICE PROS CONS
61. TESTING IOS APP WITH EXTERNAL HARDWARE INTEGRATION TESTING WITH REAL DEVICE ▸ Guarantee to work with Real device PROS CONS
62. TESTING IOS APP WITH EXTERNAL HARDWARE INTEGRATION TESTING WITH REAL DEVICE ▸ Guarantee to work with Real device ▸ Nothing to mock: 
 faster than Unit Tests PROS CONS
63. TESTING IOS APP WITH EXTERNAL HARDWARE INTEGRATION TESTING WITH REAL DEVICE ▸ Guarantee to work with Real device ▸ Nothing to mock: 
 faster than Unit Tests PROS ▸ Hard to cover corner cases CONS
64. TESTING IOS APP WITH EXTERNAL HARDWARE INTEGRATION TESTING WITH REAL DEVICE ▸ Guarantee to work with Real device ▸ Nothing to mock: 
 faster than Unit Tests PROS ▸ Hard to cover corner cases ▸ Not always stable CONS
65. TESTING IOS APP WITH EXTERNAL HARDWARE INTEGRATION TESTING WITH REAL DEVICE ▸ Guarantee to work with Real device ▸ Nothing to mock: 
 faster than Unit Tests PROS ▸ Hard to cover corner cases ▸ Not always stable ▸ Hard to automate (CI) CONS
66. TESTING IOS APP WITH EXTERNAL HARDWARE INTEGRATION TESTING WITH REAL DEVICE ▸ Guarantee to work with Real device ▸ Nothing to mock: 
 faster than Unit Tests PROS ▸ Hard to cover corner cases ▸ Not always stable ▸ Hard to automate (CI) ▸ Run takes more time CONS
67. TESTING IOS APP WITH EXTERNAL HARDWARE INTEGRATION TESTING WITH DEVICE SIMULATOR Connectivity Layer Connectivity Layer Abstraction Transport Layer • StateLESS layer • Request/Response • Device specific components • System layer, e.g. Core Bluetooth Integration Tests
68. TESTING IOS APP WITH EXTERNAL HARDWARE INTEGRATION TESTING WITH DEVICE SIMULATOR Connectivity Layer Connectivity Layer Abstraction Transport Layer • StateLESS layer • Request/Response • Device specific components • System layer, e.g. Core Bluetooth Integration Tests Simulator
69. Raspberry Pi + Python app TESTING IOS APP WITH EXTERNAL HARDWARE INTEGRATION TESTING WITH DEVICE SIMULATOR Connectivity Layer Connectivity Layer Abstraction Transport Layer • StateLESS layer • Request/Response • Device specific components • System layer, e.g. Core Bluetooth Integration Tests Simulator OSX app - BLE Peripheral Raspberry Pi + NodeJS app Arduino
70. TESTING IOS APP WITH EXTERNAL HARDWARE INTEGRATION TESTING WITH DEVICE SIMULATOR
71. TESTING IOS APP WITH EXTERNAL HARDWARE INTEGRATION TESTING WITH DEVICE SIMULATOR PROS CONS
72. TESTING IOS APP WITH EXTERNAL HARDWARE INTEGRATION TESTING WITH DEVICE SIMULATOR ▸ Limited guarantee to work with Real device PROS CONS
73. TESTING IOS APP WITH EXTERNAL HARDWARE INTEGRATION TESTING WITH DEVICE SIMULATOR ▸ Limited guarantee to work with Real device ▸ No device prototype needed PROS CONS
74. TESTING IOS APP WITH EXTERNAL HARDWARE INTEGRATION TESTING WITH DEVICE SIMULATOR ▸ Limited guarantee to work with Real device ▸ No device prototype needed ▸ Easy to cover edge cases PROS CONS
75. TESTING IOS APP WITH EXTERNAL HARDWARE INTEGRATION TESTING WITH DEVICE SIMULATOR ▸ Limited guarantee to work with Real device ▸ No device prototype needed ▸ Easy to cover edge cases PROS ▸ Need to follow specs very carefully CONS
76. TESTING IOS APP WITH EXTERNAL HARDWARE INTEGRATION TESTING WITH DEVICE SIMULATOR ▸ Limited guarantee to work with Real device ▸ No device prototype needed ▸ Easy to cover edge cases PROS ▸ Need to follow specs very carefully ▸ An additional codebase to support CONS
77. TESTING IOS APP WITH EXTERNAL HARDWARE INTEGRATION TESTING WITH DEVICE SIMULATOR ▸ Limited guarantee to work with Real device ▸ No device prototype needed ▸ Easy to cover edge cases PROS ▸ Need to follow specs very carefully ▸ An additional codebase to support ▸ Codebase grows with new Firmware/ Devices CONS
78. TESTING IOS APP WITH EXTERNAL HARDWARE INTEGRATION TESTING WITHIN TEST HARNESS Connectivity Layer Connectivity Layer Abstraction Transport Layer • StateLESS layer • Request/Response • Device specific components • System layer, e.g. Core Bluetooth Integration Tests
79. TESTING IOS APP WITH EXTERNAL HARDWARE INTEGRATION TESTING WITHIN TEST HARNESS Connectivity Layer Connectivity Layer Abstraction Transport Layer • StateLESS layer • Request/Response • Device specific components • System layer, e.g. Core Bluetooth Integration Tests
80. TESTING IOS APP WITH EXTERNAL HARDWARE INTEGRATION TESTING WITHIN TEST HARNESS Connectivity Layer Connectivity Layer Abstraction Transport Layer • StateLESS layer • Request/Response • Device specific components • System layer, e.g. Core Bluetooth Integration Tests XCTest Bundle
81. TESTING IOS APP WITH EXTERNAL HARDWARE INTEGRATION TESTING WITHIN TEST HARNESS Connectivity Layer Connectivity Layer Abstraction Transport Layer • StateLESS layer • Request/Response • Device specific components • System layer, e.g. Core Bluetooth Integration Tests Test Harness iOS App
82. TESTING IOS APP WITH EXTERNAL HARDWARE INTEGRATION TESTING WITHIN TEST HARNESS
83. TESTING IOS APP WITH EXTERNAL HARDWARE INTEGRATION TESTING WITHIN TEST HARNESS PROS CONS
84. TESTING IOS APP WITH EXTERNAL HARDWARE INTEGRATION TESTING WITHIN TEST HARNESS ▸ Can share build with QA-, FW- Engineers PROS CONS
85. TESTING IOS APP WITH EXTERNAL HARDWARE INTEGRATION TESTING WITHIN TEST HARNESS ▸ Can share build with QA-, FW- Engineers ▸ Easier to test new firmware/hardware PROS CONS
86. TESTING IOS APP WITH EXTERNAL HARDWARE INTEGRATION TESTING WITHIN TEST HARNESS ▸ Can share build with QA-, FW- Engineers ▸ Easier to test new firmware/hardware ▸ Android: easy to test on exotic device PROS CONS
87. TESTING IOS APP WITH EXTERNAL HARDWARE INTEGRATION TESTING WITHIN TEST HARNESS ▸ Can share build with QA-, FW- Engineers ▸ Easier to test new firmware/hardware ▸ Android: easy to test on exotic device PROS ▸ Need to reimplement some XCTest tools CONS
88. TESTING IOS APP WITH EXTERNAL HARDWARE INTEGRATION TESTING WITHIN TEST HARNESS ▸ Can share build with QA-, FW- Engineers ▸ Easier to test new firmware/hardware ▸ Android: easy to test on exotic device PROS ▸ Need to reimplement some XCTest tools ▸ Need to keep transport layer in Framework CONS
89. TESTING IOS APP WITH EXTERNAL HARDWARE INTEGRATION TESTING WITHIN TEST HARNESS ▸ Can share build with QA-, FW- Engineers ▸ Easier to test new firmware/hardware ▸ Android: easy to test on exotic device PROS ▸ Need to reimplement some XCTest tools ▸ Need to keep transport layer in Framework ▸ Need to support another codebase CONS
90. TESTING IOS APP WITH EXTERNAL HARDWARE BEST PRACTICES
91. TESTING IOS APP WITH EXTERNAL HARDWARE BEST PRACTICES ▸ Cover happy path + corner cases via Unit Tests
 CI - must-have
92. TESTING IOS APP WITH EXTERNAL HARDWARE BEST PRACTICES ▸ Cover happy path + corner cases via Unit Tests
 CI - must-have ▸ Cover happy path ONLY via Integration Tests
 CI-optional
93. TESTING IOS APP WITH EXTERNAL HARDWARE BEST PRACTICES ▸ Cover happy path + corner cases via Unit Tests
 CI - must-have ▸ Cover happy path ONLY via Integration Tests
 CI-optional ▸ No device - use Simulator
94. TESTING IOS APP WITH EXTERNAL HARDWARE BEST PRACTICES
95. TESTING IOS APP WITH EXTERNAL HARDWARE BEST PRACTICES ▸ Unstable connection - 
 MUST still cover with Integration Tests
 

96. TESTING IOS APP WITH EXTERNAL HARDWARE BEST PRACTICES ▸ Unstable connection - 
 MUST still cover with Integration Tests
 
 ▸ When too many device/firmware versions - 
 use Integration Tests + Test Harness
97. TESTING IOS APP WITH EXTERNAL HARDWARE SHOWCASES
98. TESTING IOS APP WITH EXTERNAL HARDWARE SHOWCASE 1: COFFEE ROASTING MACHINE
99. TESTING IOS APP WITH EXTERNAL HARDWARE SHOWCASE 1: COFFEE ROASTING MACHINE
100. TESTING IOS APP WITH EXTERNAL HARDWARE SHOWCASE 1: COFFEE ROASTING MACHINE Coffee roasting machine
101. TESTING IOS APP WITH EXTERNAL HARDWARE SHOWCASE 1: COFFEE ROASTING MACHINE Coffee roasting machine Bluetooth LE WiFi
102. TESTING IOS APP WITH EXTERNAL HARDWARE SHOWCASE 1: COFFEE ROASTING MACHINE Coffee roasting machine Bluetooth LE WiFi
103. TESTING IOS APP WITH EXTERNAL HARDWARE SHOWCASE 1: COFFEE ROASTING MACHINE Coffee roasting machine
104. TESTING IOS APP WITH EXTERNAL HARDWARE SHOWCASE 1: COFFEE ROASTING MACHINE Coffee roasting machine
105. TESTING IOS APP WITH EXTERNAL HARDWARE SHOWCASE 1: COFFEE ROASTING MACHINE Coffee roasting machine
106. TESTING IOS APP WITH EXTERNAL HARDWARE SHOWCASE 1: COFFEE ROASTING MACHINE Coffee roasting machine Hardware Unit Hardware Unit Hardware Unit Hardware Unit
107. TESTING IOS APP WITH EXTERNAL HARDWARE SHOWCASE 1: COFFEE ROASTING MACHINE Coffee roasting machine Hardware Unit Hardware Unit Hardware Unit Hardware Unit USB
108. TESTING IOS APP WITH EXTERNAL HARDWARE SHOWCASE 1: COFFEE ROASTING MACHINE Coffee roasting machine Hardware Unit Hardware Unit Hardware Unit Hardware Unit USB
109. TESTING IOS APP WITH EXTERNAL HARDWARE SHOWCASE 1: COFFEE ROASTING MACHINE Coffee roasting machine Bluetooth LE WiFi Hardware Hardware Hardware Hardware USB
110. TESTING IOS APP WITH EXTERNAL HARDWARE SHOWCASE 1: COFFEE ROASTING MACHINE Coffee roasting machine Bluetooth LE WiFi USB
111. TESTING IOS APP WITH EXTERNAL HARDWARE SHOWCASE 1: COFFEE ROASTING MACHINE Coffee roasting machine Bluetooth LE WiFi USB Simulator
112. TESTING IOS APP WITH EXTERNAL HARDWARE SHOWCASE 1: COFFEE ROASTING MACHINE Coffee roasting machine Bluetooth LE WiFi USB Simulator Arduino Uno
113. Simulator TESTING IOS APP WITH EXTERNAL HARDWARE SHOWCASE 1: COFFEE ROASTING MACHINE Coffee roasting machine Bluetooth LE WiFi USB Arduino Uno
114. Simulator TESTING IOS APP WITH EXTERNAL HARDWARE SHOWCASE 1: COFFEE ROASTING MACHINE Coffee roasting machine Bluetooth LE WiFi USB Arduino Uno Integration Tests
115. TESTING IOS APP WITH EXTERNAL HARDWARE SHOWCASE 1: COFFEE ROASTING MACHINE Coffee roasting machine Bluetooth LE WiFi USB Integration Tests
116. TESTING IOS APP WITH EXTERNAL HARDWARE SHOWCASE 1: COFFEE ROASTING MACHINE Coffee roasting machine Bluetooth LE WiFi USB Integration Tests 1 day
117. TESTING IOS APP WITH EXTERNAL HARDWARE SHOWCASE 2: MEDICAL WEARABLE
118. TESTING IOS APP WITH EXTERNAL HARDWARE SHOWCASE 2: MEDICAL WEARABLE Bluetooth LE
119. TESTING IOS APP WITH EXTERNAL HARDWARE SHOWCASE 2: MEDICAL WEARABLE Data synchronization algorithm
120. TESTING IOS APP WITH EXTERNAL HARDWARE SHOWCASE 2: MEDICAL WEARABLE Data synchronization algorithm Mock Transport Layer Unit Tests Cases
121. TESTING IOS APP WITH EXTERNAL HARDWARE SHOWCASE 2: MEDICAL WEARABLE Data synchronization algorithm Transport Layer Integration Tests Cases Test Harness iOS App
122. TESTING IOS APP WITH EXTERNAL HARDWARE SHOWCASE 2: MEDICAL WEARABLE
123. TESTING IOS APP WITH EXTERNAL HARDWARE SHOWCASE 2: MEDICAL WEARABLE ▸ 3 weeks of work
124. TESTING IOS APP WITH EXTERNAL HARDWARE SHOWCASE 2: MEDICAL WEARABLE ▸ 3 weeks of work ▸ 2 developers: 1 iOS, 1 Android
125. TESTING IOS APP WITH EXTERNAL HARDWARE SHOWCASE 2: MEDICAL WEARABLE ▸ 3 weeks of work ▸ 2 developers: 1 iOS, 1 Android ▸ Reliable data synchronization
126. TESTING IOS APP WITH EXTERNAL HARDWARE INSTEAD OF CONCLUSIONS
127. TESTING IOS APP WITH EXTERNAL HARDWARE INSTEAD OF CONCLUSIONS ▸ Don’t sell your customer auto tests - 
 Include those to estimates
128. TESTING IOS APP WITH EXTERNAL HARDWARE INSTEAD OF CONCLUSIONS ▸ Don’t sell your customer auto tests - 
 Include those to estimates ▸ 100% code coverage is never needed - 
 Find level needed by your app
129. TESTING IOS APP WITH EXTERNAL HARDWARE INSTEAD OF CONCLUSIONS ▸ Don’t sell your customer auto tests - 
 Include those to estimates ▸ 100% code coverage is never needed - 
 Find level needed by your app ▸ Try both sides of the force: 
 Both under-testing and over-testing
130. TESTING IOS APP WITH EXTERNAL HARDWARE THANKS FOR ATTENTION Viacheslav Volodko skype: killobatt vvolodko@lohika.com killobatt@gmail.com #cocoaheadsukraine