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Developer README for the dhis2 adaptor

Source: https://github.com/OpenFn/adaptors/tree/main/packages/dhis2

Language DHIS2

An OpenFn language Pack for building expressions and operations for working with the DHIS2 API. Used most commonly via OpenFn.org or by hand with OpenFn/core from the root of this repo:

core execute \
-l ../language-dhis2 \
-e ./tmp/expression.js \
-s ./tmp/state.json \
-o ./tmp/output.json

Documentation

View the docs site for full technical documentation.

There are lots of examples for how to use the various helper functions on the main Adaptor docs page.

Sample State

{
"configuration": {
"username": "admin",
"password": "district",
"hostUrl": "https://play.dhis2.org/2.36.6"
},
"data": { "a": 1, "b": 2 }
}

Development

Run tests using pnpm run test or pnpm run test:watch. (NB: that this repo also contain integration tests which can be run with pnpm run integration-test.)

⚠️ NB: Make changes to the files in src/ and then use npm run build to generate output files in lib/.

The documentation is autogenerated, so please rebuild the docs after making changes by running pnpm build docs

Unit Tests

Unit tests allows to test the functionalities of the adaptor helper functions such as:

Does create('events', payload) perform a post request to the correct DHIS2 API?

To run unit tests execute pnpm run test (they're the default tests).

Anytime a new functionality is added to the helper functions, more unit tests needs to be added.

End-to-end integration tests

Integration tests allow us to test the end-to-end behavior of the helper functions and also to test the examples we provide via inline documentation.

For example with integration tests we answer the following question:

Does create('events', eventPayload) actually create a new event in a live DHIS2 system?

To run integration tests, execute npm run integration-test. These tests use network I/O and a public connection to a DHIS2 "play" server so their timing and performance is unpredictable. Consider adding an increased timeout, and modifying the orgUnit, program, etc., IDs set in globalState.

Troubleshooting the tests

  • Depending on your internet strength please consider changing the global timeout in the test/mocha.opts file to avoid faillures related to network timeouts.

  • The behavior of the tests in test/integration.js is very unpredictable; they depend on the configuration of a target DHIS2 instance. Currently you need to have at least one organisation unit with one program, one trackedEntityInstance and one programStage in it. These components need to be well configured for the integration tests to work. For example: the trackedEntityInstance need to be enrolled to the program, which should be created in that organisation unit and contains at least that programStage. If the tests fail, you must adjust these attributes in the before hook:

before(done => {
fixture.initialState = {
configuration: {
username: 'admin',
password: 'district',
hostUrl: 'https://play.dhis2.org/2.36.6',
},
program: 'IpHINAT79UW',
orgUnit: 'DiszpKrYNg8',
trackedEntityInstance: 'uhubxsfLanV',
programStage: 'eaDHS084uMp',
};
done();
});
  • Make sure the update and upsert integration tests don't affect those initial organisation units, programs, programStage and trackedEntityInstance required. Otherwise the create integration tests would be broken again; and that's an endless faillure loop :(

Anytime a new example is added in the documentation of a helper function, a new integration test should be built.