sdf test

The sdf test is a runtime command that allows you to test functions and states defined in packages. Navigate to a project directory with a sdf-package.yaml file definition, compile the package, and run sdf test. The command opens an interactive terminal that allows you to test your package components.

The sdf test CLI allows you to setup an environment to test your functions before deploying them in production. When functions interact with state, the test environment allows you to initialize, and view state objects as well.

>> --help
SDF - Stateful Dataflow

Usage: <COMMAND>

Commands:
  add   Add state
  show  Show functions or states
  test  Run test
  exit  Stop interactive session

The test commands work inline or in an interactive mode.

Augment or initialize a state object.

>> add state -h
Usage: add state --key <STATE_KEY> --value <STATE_VALUE> <STATE_NAME>

Arguments:
  <STATE_NAME>  

Options:
  -k, --key <STATE_KEY>      
  -v, --value <STATE_VALUE>  

The key and value format must match the schema defined by the state object.

Test functions inline rather than in interactive mode. Given a function that turns a string into lowercase, we’ll test as follows:

$ sdf test function --input "Test" format-word
Testing package: count-words-pkg
test

The test command has the following hierarchy:

$ sdf test -h
Test command shell (requires sdf-package.yaml)

Usage: sdf test [OPTIONS] [COMMAND]

Commands:
  function    test functions inline

Options:
      --dev   set runtime to use dev mode [env: DEV=]

Where:

• --dev - development profile to be used for building code

When writing automated tests, inline commands are preferred over the interactive mode. Use --dev flag to run a test.

To test a function that masks SSN numbers, you would run the following command:

$ sdf test --dev function mask-ssn --value "My SSN is 534-34-3443."
My SSN is ***-**-****.

The command returs a result rather than entering intractive mode.

$ sdf test function -h
Usage: sdf test function [OPTIONS] --value <<VALUE>> <FN_NAME>

Arguments:
  <FN_NAME>  Function name

Options:
  -v, --value <VALUE>          Record value mapped to the `value` input of the function
  -k, --key <KEY>              Record key mapped to the `key` input of the function
  -s, --state-key <STATE_KEY>  The key of the state the function runner uses to look-up
                               state object
  -o, --output <OUTPUT>        Output types, where  v: is value (default), and kv: is
                               key-value [default: v]

Where:

• --value - maps ot the input parameter of the function
• --key - maps to the optional input parameter of the function
• --state-key - asks by the engine to look-up a state
• --output - ask the engine to show values-only or key-values