Additional Examples

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You may want to pass dictionaries as arguments to your Cadence code. The most common is metadata with \{String:String\} type

import {executeScript} from "@onflow/flow-js-testing"
const main = async () => {
  const basePath = path.resolve(__dirname, "../cadence")
  // Init framework
  await init(basePath)
  // Start emulator
  await emulator.start()
  const code = `
    pub fun main(metadata: {String: String}): String{
      return metadata["name"]!
    }  
  `
  // Define arguments we want to pass
  const args = [{name: "Boris", nickname: "The Blade"}]
  // If something goes wrong with script execution, the method will throw an error
  // so we need to catch it and proce
  const [name, err] = await shallResolve(executeScript({code, args}))
  console.log(name, err)
  await emulator.stop()
}
main()

If you need to pass an array of dictionaries, it's not that different. Just replace the args variable above with multiple values:

const args = [
  // This is array of dictionaries
  [
    {name: "Boris", nickname: "The Blade"},
    {name: "Franky", nickname: "Four-Fingers"},
  ],
]

Or maybe you want to pass dictionary with type {String: [String]}:

const args = [
  {
    names: ["Alice", "Bob", "Charlie"],
  },
]

Framework will try to resolve the types to the best of its abilities. If you encounter an error for your use case, please create an issue here: https://github.com/onflow/flow-js-testing/issues

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