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Integration tests

Integration tests are useful to ensure that the code works well for any use cases.

They can also be used as sample on how to use the Matrix SDK.

In a ideal world, every API of the SDK should be covered by integration tests. For the moment, we have test mainly for the Crypto part, which is the tricky part. But it covers quite a lot of features: accounts creation, login to existing account, send encrypted messages, keys backup, verification, etc.

The Matrix SDK is able to open multiple sessions, for the same user, of for different users. This way we can test communication between several sessions on a single device.

Pre requirements

Integration tests need a homeserver running on localhost.

The documentation describes what we do to have one, using Synapse, which is the Matrix reference homeserver.

Install and run Synapse

Steps:

Install virtualenv

python3 -m pip install virtualenv

Clone Synapse repository

git clone -b develop https://github.com/matrix-org/synapse.git

git clone -b develop git@github.com:matrix-org/synapse.git

You should have the develop branch cloned by default.

Run synapse, from the Synapse folder you just cloned

virtualenv -p python3 env
source env/bin/activate
pip install -e .
demo/start.sh --no-rate-limit

Alternatively, to install the latest Synapse release package (and not a cloned branch) you can run the following instead of pip install -e .:

pip install matrix-synapse

You should now have 3 running federated Synapse instances 🎉, at http://127.0.0.1:8080/, http://127.0.0.1:8081/ and http://127.0.0.1:8082/, which should display a "It Works! Synapse is running" message.

Run the test

It's recommended to run tests using an Android Emulator and not a real device. First reason for that is that the tests will use http://10.0.2.2:8080 to connect to Synapse, which run locally on your machine.

You can run all the tests in the androidTest folders.

Stop Synapse

To stop Synapse, you can run the following commands:

./demo/stop.sh

And you can deactivate the virtualenv:

deactivate

Troubleshoot

You'll need python3 to be able to run synapse

Android Emulator does cannot reach the homeserver

Try on the Emulator browser to open "http://10.0.2.2:8080". You should see the "Synapse is running" message.

virtualenv command fails

You can try using

python3 -m venv env

python3 -m virtualenv env

instead of

virtualenv -p python3 env

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