A framework to arrive at test scenarios for IoT projects.

1. The IoT Testing Atlas
1
- One glance at all your test cases!

2. Gayathri M
Quality Analyst
8+ yrs

3. Consider an
example of a
connected coffee
machine.

4. ©ThoughtWorks 2017 Commercial in Confidence
States of the system!
- Server down
- HTTP timeouts
- Slow networks
- Authorization and
authentication
errors
4
- Machine Wi-Fi off
- Machine Wi-Fi on
- Machine is busy
- Machine is sleeping
- Offline mode
- Online mode
- Activity kill
- Background
behavior
- Languages
- Location
States of a simple Web
application
States of Mobile device
States of a machine

5. At any point in time, the system can be in
4*6*4 states just for the sample set!
5

6. What is it made of?
- Each component’s state in a system
is placed in a circle.
- The states which has a logical next
state transition are placed next to
each other.
- Take the circles which contribute a
feature at a time and rotate one
circle one state at a time. (Like an
Atlas!)
- You can arrive at logical test cases
by doing this. Sometimes, the two
states may not make sense
together and can be ignored.

7. For example -
Let’s fix the mobile and machine circle
and rotate the network circle.
- Unauthorised user tries to access
the machine, which triggers the
authorization failed message.
- Server errors and server down
scenarios should trigger
appropriate error messages..
- And so on...

8. Advantages
- Can be extended much
complex systems
- Common point of
reference for QA team.
- All states in a glance.
- Can also cover Non
Functional Requirements

9. Thank You
9
- Gayathri M