SAML integration test

[jackHay22]

Add SAML integration test using https://hub.docker.com/r/kristophjunge/test-saml-idp/ https://github.com/AllSpiceIO/docker-test-saml-idp

Running test locally

docker run \
-p 8080:8080 \
-p 8443:8443 \
-e SIMPLESAMLPHP_SP_ENTITY_ID=http://localhost:3003/user/saml/test-sp/metadata \
-e SIMPLESAMLPHP_SP_ASSERTION_CONSUMER_SERVICE=http://localhost:3003/user/saml/test-sp/acs \
-e SIMPLESAMLPHP_SP_SINGLE_LOGOUT_SERVICE=http://localhost:3003/user/saml/test-sp/acs \
--add-host=localhost:192.168.65.2 \
-d allspice/simple-saml

TEST_SIMPLESAML_URL=localhost:8080 make test-sqlite#TestSAMLRegistration

TODO

• Fix integration test in GH actions
• Add documentation
• Do we want to maintain our own docker image for simplesaml?
  • See https://github.com/AllSpiceIO/docker-test-saml-idp

[kdumontnu]

@techknowlogick can this be merged? I think it will help to get the base PR reviewed & merged.