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Import import { invokeDataSource } from "@prismatic-io/spectral/dist/testing" ;
Signature export const invokeDataSource = async < TInputs extends Inputs , TConfigVars extends ConfigVarResultCollection , TDataSourceType extends DataSourceType , >( { perform } : DataSourceDefinition < TInputs , TConfigVars , TDataSourceType >, params : ActionInputParameters < TInputs >, context ?: Partial < DataSourceContext < TConfigVars >>, ): Promise < DataSourceResult < TDataSourceType >>
invokeDataSource calls the perform function of a DataSourceDefinition with a mock DataSourceContext and the params you provide. Unlike invoke, it returns the DataSourceResult directly (not wrapped in an InvokeReturn).Data source contexts are slightly different from action contexts — they do not include stepId, executionId, webhookUrls, or other execution-specific fields. invokeDataSource constructs the correct context type automatically.
Parameters dataSource
DataSourceDefinition
required
The data source definition object to invoke. Only the perform function is used.
params
ActionInputParameters<TInputs>
required
An object containing the input parameter values for the data source. Keys must match the input keys defined on the data source.
context
Partial<DataSourceContext<TConfigVars>>
Optional partial data source context. Overrides the default mock context. Show default context fields
Field Default value loggerloggerMock()configVars{}customer.id"customerId"customer.name"Customer 1"instance.id"instanceId"user.id"userId"user.email"example@email.com"
Return value type DataSourceResult < TDataSourceType extends DataSourceType > = ... // e.g. { result: string } for dataSourceType: "string" // e.g. { result: string[] } for dataSourceType: "picklist"
result
varies by dataSourceType
required
The value returned by the data source’s perform function. The shape depends on the dataSourceType declared on the definition.
Examples Picklist data source
String data source
With configVars context
import { dataSource , input } from "@prismatic-io/spectral" ; import { invokeDataSource } from "@prismatic-io/spectral/dist/testing" ; import { describe , expect , it } from "vitest" ; const listRegionsDataSource = dataSource ({ display: { label: "List Regions" , description: "Returns available regions" }, inputs: { apiKey: input ({ label: "API Key" , type: "string" }), }, dataSourceType: "picklist" , perform : async ( context , { apiKey }) => { // In a real component, you'd call an API here return { result: [ "us-east-1" , "us-west-2" , "eu-west-1" ] }; }, }); describe ( "listRegionsDataSource" , () => { it ( "returns a list of regions" , async () => { const result = await invokeDataSource ( listRegionsDataSource , { apiKey: "test-key" , }); expect ( result . result ). toContain ( "us-east-1" ); expect ( result . result ). toHaveLength ( 3 ); }); });
