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Android Mobile Application Testing
Specific functional. Performance. Device park
selection
Mykhailo Zhelieznov
QC Eng. at ...
Agenda:
● Specific functional:
○ Application installation
○ Network access
○ Animation, Video, Audio
○ GUI testing
● Perfo...
Application installation
Application installation
It’s important to check application
installation, especially if it saves some
specific data on de...
Application installation
Device preparation
● Cleared device (after factory reset)
● Device with existing user’s data (app...
Application installation
● Settings > Backup and restore >
Factory reset
● Reboot to recovery mode - Volume Down
+ Power (...
Application installation
Ways of application installing
● System apps, installed when system is initialized
● Install apps...
Application installation
What can be wrong while installing app?
● At least check installer is not corrupted
● Check reque...
Application installation
Other cases
● Check that Uninstalling works correct:
○ all necessary data is removed from device
...
Application installation
Clear application data
As you use applications, they start storing
files for reference later. The...
Application installation
‘Closing’ apps
Removing an entry in recent tasks will kill any
background processes that exist fo...
Network access
Need to check each connection type and
switches between them
Network access
Disconnected WiFi Edge 3G AirPlane
Disconnecte...
State transitions / use cases, depended
on requirements
Network access
●Disconnected > Edge > WiFi > Edge > WiFi >
AirPlan...
● Downloading is in progress > connection type changed
● Wait for WiFi access before doing large data transfers, since
WiF...
Network access
● Downloaded data should be valid, encrypted if necessary
(files, push events etc.)
Animation, Video, Audio
Can be triggered:
● By user’s action
○ Swipe, scroll
○ Button press
○ Tap on screen
○ Device rotate
○ Change settings
● On...
Can be interrupted (paused / stopped):
● By the same reasons they triggers (previous slide)
● By incoming / outcoming call...
The best way to test the accuracy of Animation /
Video / Audio - is simply watch / listen and compare
with requirements. A...
Graphical user interface
testing
You can make a screenshot from your screen
and then use any image editor which shows
cursor location to calculate the size...
Developer options can make your life much easy. Use next of them
for GUI testing:
GUI testing
● Pointer location ● Show la...
Dump view hierarchy for UI Automator + Show layout bounds GUI testing
140
580
A virtual pixel unit that you should use when defining UI layout, to express layout
dimensions or position in a density-in...
● find it in your device tech specification
● get display info using ADB:
○ $ adb shell dumpsys display
○ find ‘density’ i...
Performance
Performance
● Note the time of action, e.g.:
○ application starting time
○ screen switch
○ list download / scroll
○ any ac...
Performance
Over and above you can use a simply ADB
command-line tool to execute the actions by
incredible scenario - like...
Performance
We can check the RAM usage without
any additional tools
● Go to Settings > Apps > Running
Consumption of resou...
Performance
We can check Power Consumption the
same way we did for RAM checking
● Go to Settings > Battery
Consumption of ...
Consumption of resources
If you want a bit better tool with the same intuitive interface - go to Google Play store and fin...
Performance
If power consumption is really important
for you - buy additional hardware and
software e.g. Monsoon Power Mon...
Device park
Device park
Android has a really big problem due to fragmentation of
different vendors with different hardware and softwar...
Device park
1. Watches
2. Smart glasses
3. Home Appliances
4. Cars
5. Homes
6. Cameras
7. Smart TVs
8. DECT phones
9. Game...
Device park
Gather as much information as possible and allowed about the devices
of your end users:
● Devices types
● Dens...
Device park
Google devices:
● Uses original Android
● First receives latest Factory Images
● Easy to install previous vers...
Device park
Use cloud device storages
Performance
???
Viewing heap usage for a process
DDMS allows you to view how much heap memory a process is using. This information is ...
???Viewing heap usage for a process
???
DDMS provides a feature to track objects that are being allocated to memory and to see which classes and threads
are a...
???
Tracking memory allocation of objects
???
Examining thread information
Threads tab in DDMS shows you the currently running threads for a selected
process.
1. In...
???
Examining thread information
???
Method profiling is a means to track certain metrics about a method, such as number of calls,
execution time, and time...
???Starting method profiling
Android Mobile Application Testing: Specific Functional, Performance, Device Park Selection
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Android Mobile Application Testing: Specific Functional, Performance, Device Park Selection

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A presentation by M. Zhelieznov on 'Android Mobile Application Testing' which covers specific functional, performance, device park selection

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Android Mobile Application Testing: Specific Functional, Performance, Device Park Selection

  1. 1. Android Mobile Application Testing Specific functional. Performance. Device park selection Mykhailo Zhelieznov QC Eng. at SoftServe
  2. 2. Agenda: ● Specific functional: ○ Application installation ○ Network access ○ Animation, Video, Audio ○ GUI testing ● Performance ● Device park
  3. 3. Application installation
  4. 4. Application installation It’s important to check application installation, especially if it saves some specific data on device or registers to the server
  5. 5. Application installation Device preparation ● Cleared device (after factory reset) ● Device with existing user’s data (apps installed, additional user’s data - documents, pictures, music etc.) ● Device OS upgrade
  6. 6. Application installation ● Settings > Backup and restore > Factory reset ● Reboot to recovery mode - Volume Down + Power (depends on Vendor) > wipe data/factory reset How to clear the device:
  7. 7. Application installation Ways of application installing ● System apps, installed when system is initialized ● Install apps from Google Play Store ● Install apps using adb, "adb install xxx.apk" ● Copy xxxapp.apk to sdcard, browse the .apk file from your phone, double click, the app would be installed.
  8. 8. Application installation What can be wrong while installing app? ● At least check installer is not corrupted ● Check requested permissions ● Check if application starts ● Check if all necessary data created. It can be pictures (e.g. WallPapers app), sounds, data base, other specific data saved in specific directory (need to be checked with developers)
  9. 9. Application installation Other cases ● Check that Uninstalling works correct: ○ all necessary data is removed from device ○ application is unregistered from server ● Check that reinstalling of the same app doesn’t produce any issues ● New version of application can be available, check that upgrade successfully executes (this can be done in combination of OS upgrade) Note: system apps & administrators can’t be removed, just stopped but not always
  10. 10. Application installation Clear application data As you use applications, they start storing files for reference later. These files are stored in an app "cache." Settings > Applications > Select app (depends on vendor) 1 Clearing app data is a little more drastic. You're wiping the cache, but also clearing any and all settings that go along with that app. 2
  11. 11. Application installation ‘Closing’ apps Removing an entry in recent tasks will kill any background processes that exist for the process. It won't directly causes services to stop For stop is a complete kill of the app -- all processes are killed, all services stopped, all notifications removed, all alarms removed, etc. The app is not allowed to launch again until explicitly requested. 1 2
  12. 12. Network access
  13. 13. Need to check each connection type and switches between them Network access Disconnected WiFi Edge 3G AirPlane Disconnected x x x x WiFi x x x x Edge x x x x 3G x x x x AirPlane x x x x 20 elementary cases is just a beginning
  14. 14. State transitions / use cases, depended on requirements Network access ●Disconnected > Edge > WiFi > Edge > WiFi > AirPlane mode > Disconnected > Wifi … ●Edge > Disconnected > AirPlane mode > Edge ...
  15. 15. ● Downloading is in progress > connection type changed ● Wait for WiFi access before doing large data transfers, since WiFi transfers maximize battery usage compared to transfers over 3G or EDGE ● Cached files should be refreshed if they were changed on server. This can be done by manual downloading of resources or by Server push event ● Push event is received just after device back online. Downloading resume after device back online Network access Caching, downloads for offline work
  16. 16. Network access ● Downloaded data should be valid, encrypted if necessary (files, push events etc.)
  17. 17. Animation, Video, Audio
  18. 18. Can be triggered: ● By user’s action ○ Swipe, scroll ○ Button press ○ Tap on screen ○ Device rotate ○ Change settings ● On timeout ● By event / push message receiving Animation, Video, Audio
  19. 19. Can be interrupted (paused / stopped): ● By the same reasons they triggers (previous slide) ● By incoming / outcoming call / sms ● Status bar / menu opening, popup appearing ● Low power resource ● App move to BG > FG ● Lock / Unlock device ● If Audio / Video is playing in BG - it can be interrupted by other applications sounds ● Audio - headphones disconnection ● Video - full screen enter / exit Animation, Video, Audio
  20. 20. The best way to test the accuracy of Animation / Video / Audio - is simply watch / listen and compare with requirements. Additional tools can help to detect if playing started / paused, but won’t detect the incorrect displaying / sounding Animation, Video, Audio
  21. 21. Graphical user interface testing
  22. 22. You can make a screenshot from your screen and then use any image editor which shows cursor location to calculate the sizes in pixel GUI testing
  23. 23. Developer options can make your life much easy. Use next of them for GUI testing: GUI testing ● Pointer location ● Show layout bounds
  24. 24. Dump view hierarchy for UI Automator + Show layout bounds GUI testing 140 580
  25. 25. A virtual pixel unit that you should use when defining UI layout, to express layout dimensions or position in a density-independent way. The density-independent pixel is equivalent to one physical pixel on a 160 dpi screen, which is the baseline density assumed by the system for a "medium" density screen. At runtime, the system transparently handles any scaling of the dp units, as necessary, based on the actual density of the screen in use. The conversion of dp units to screen pixels is simple: px = dp * (dpi / 160). For example, on a 240 dpi screen, 1 dp equals 1.5 physical pixels. You should always use dp units when defining your application's UI, to ensure proper display of your UI on screens with different densities. GUI testing Density-independent pixel (dp)
  26. 26. ● find it in your device tech specification ● get display info using ADB: ○ $ adb shell dumpsys display ○ find ‘density’ in command output: GUI testing How to get your device density (Dots per inch)?
  27. 27. Performance
  28. 28. Performance ● Note the time of action, e.g.: ○ application starting time ○ screen switch ○ list download / scroll ○ any action triggered by user (for ex. on button press) ● Repeat same test few more times (e.g. 10) and calculate the average for better accuracy ● On different Android versions performance can be different as on the devices with a different characteristics ● ~100 switches between screens / ~100 screen rotates / application move BG then FG ● Load / Create a lot of files at once Simple performance tests
  29. 29. Performance Over and above you can use a simply ADB command-line tool to execute the actions by incredible scenario - like Monkey. The basic syntax is: $ adb shell monkey [options] <event-count> For example, if your application package is com.myapp and you want to generate 1000 gestures, with a delay of 500ms between each event, you have to use this command: $ adb shell monkey -p com.myapp --throttle 500 -v 1000 Simple performance tests
  30. 30. Performance We can check the RAM usage without any additional tools ● Go to Settings > Apps > Running Consumption of resources
  31. 31. Performance We can check Power Consumption the same way we did for RAM checking ● Go to Settings > Battery Consumption of resources
  32. 32. Consumption of resources If you want a bit better tool with the same intuitive interface - go to Google Play store and find the App which will show all the data you need in the way you like (e.g. Simply System Monitor) Performance
  33. 33. Performance If power consumption is really important for you - buy additional hardware and software e.g. Monsoon Power Monitor Consumption of resources
  34. 34. Device park
  35. 35. Device park Android has a really big problem due to fragmentation of different vendors with different hardware and software installations as well as customized user interfaces.
  36. 36. Device park 1. Watches 2. Smart glasses 3. Home Appliances 4. Cars 5. Homes 6. Cameras 7. Smart TVs 8. DECT phones 9. Game consoles 10. Mirrors (you read that right) Android Everywhere: 10 Types of Devices That Android Is Making Better
  37. 37. Device park Gather as much information as possible and allowed about the devices of your end users: ● Devices types ● Densities ● Android versions ● Vendors ● Architectures Gether the statistic
  38. 38. Device park Google devices: ● Uses original Android ● First receives latest Factory Images ● Easy to install previous versions of operating system Google Nexus - Always new
  39. 39. Device park Use cloud device storages
  40. 40. Performance
  41. 41. ??? Viewing heap usage for a process DDMS allows you to view how much heap memory a process is using. This information is useful in tracking heap usage at a certain point of time during the execution of your application. To view heap usage for a process: 1. In the Devices tab, select the process that you want to see the heap information for. 2. Click the Update Heap button to enable heap information for the process. 3. In the Heap tab, click Cause GC to invoke garbage collection, which enables the collection of heap data. When the operation completes, you will see a group of object types and the memory that has been allocated for each type. You can click Cause GC again to refresh the data. 4. Click on an object type in the list to see a bar graph that shows the number of objects allocated for a particular memory size in bytes.
  42. 42. ???Viewing heap usage for a process
  43. 43. ??? DDMS provides a feature to track objects that are being allocated to memory and to see which classes and threads are allocating the objects. This allows you to track, in real time, where objects are being allocated when you perform certain actions in your application. This information is valuable for assessing memory usage that can affect application performance. To track memory allocation of objects: 1. In the Devices tab, select the process that you want to enable allocation tracking for. 2. In the Allocation Tracker tab, click the Start Tracking button to begin allocation tracking. At this point, anything you do in your application will be tracked. 3. Click Get Allocations to see a list of objects that have been allocated since you clicked on the Start Tracking button. You can click on Get Allocations again to append to the list new objects that that have been allocated. 4. To stop tracking or to clear the data and start over, click the Stop Tracking button. 5. Click on a specific row in the list to see more detailed information such as the method and line number of the code that allocated the object. Tracking memory allocation of objects
  44. 44. ??? Tracking memory allocation of objects
  45. 45. ??? Examining thread information Threads tab in DDMS shows you the currently running threads for a selected process. 1. In the Devices tab, select the process that you want to examine the threads for. 2. Click the Update Threads button. 3. In the Threads tab, you can view the thread information for the selected process.
  46. 46. ??? Examining thread information
  47. 47. ??? Method profiling is a means to track certain metrics about a method, such as number of calls, execution time, and time spent executing the method. To start method profiling: 1. On the Devices tab, select the process that you want to enable method profiling for. 2. Click the Start Method Profiling button. 3. Interact with your application to start the methods that you want to profile. 4. Click the Stop Method Profiling button. DDMS stops profiling your application and opens Traceview with the method profiling information that was collected between the time you clicked on Start Method Profiling and Stop Method Profiling. Starting method profiling
  48. 48. ???Starting method profiling

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