Pact Foundation

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Currently, I have successfully pushed the contract into our pact broker, but there was an error when I ran the test on the provider side. I cannot get the data from the provider side, it always returns '{}'.
anything wrong with this setup, please help me

In `messageProviders` each key needs to map to the `description` in the pact file.  It seems like `'configuration'` in your code should be `'a configuration'`.

The `stateHandlers` also need to map to the provider states in the pact file. It seems like your provider state is also called `'a configuration'`

if you could share the full output or pact  file, I could confirm that

but what is the different between messageProviders and stateHandlers

I didn't found the doc about them on the Pact docs page

Provider states: <https://github.com/pact-foundation/pact-js/blob/master/docs/provider.md#api-with-provider-states>

Messages: <https://github.com/pact-foundation/pact-js/blob/master/docs/messages.md>

Some more general docs about provider states

<https://docs.pact.io/getting_started/provider_states>

`messageProviders` are required to map your contract interactions to the code that will produce the message.

This is due to message-pact testing only the contents, and not the transport (unlike http pact)