@onflow/flow-js-testing/test/basic/imports.test.js

This package will expose a set of utility methods, to allow Cadence code testing with libraries like Jest

import {replaceImportAddresses} from "../../src"

describe("replace", () => {
  test("deployed address", async () => {
    const Basic = "0x01"
    const code = `import Basic from 0xTEMPLATE_STRING`
    const result = replaceImportAddresses(code, {
      Basic,
    })
    const reference = `import Basic from ${Basic}`
    expect(result).toEqual(reference)
  })

  test("multiple deployed addresses", async () => {
    const Basic = "0x01"
    const Advanced = "0x02"

    const code = `
    import Basic from 0xBASIC_TEMPLATE
    import Advanced from 0xADVANCED_TEMPLATE
    `

    const result = replaceImportAddresses(code, {
      Basic,
      Advanced,
    })

    const reference = `
    import Basic from ${Basic}
    import Advanced from ${Advanced}
    `

    expect(result).toEqual(reference)
  })

  test("local imports", async () => {
    const Basic = "0x01"
    const code = `import Basic from "../cadence/script"`
    const result = replaceImportAddresses(code, {
      Basic,
    })
    const reference = `import Basic from ${Basic}`
    expect(result).toEqual(reference)
  })

  test("multiple local imports", async () => {
    const Basic = "0x01"
    const Advanced = "0x02"

    const code = `
    import Basic from "../cadence/Basic.cdc"
    import Advanced from "../cadence/Advanced.cdc"
    `

    const result = replaceImportAddresses(code, {
      Basic,
      Advanced,
    })

    const reference = `
    import Basic from ${Basic}
    import Advanced from ${Advanced}
    `

    expect(result).toEqual(reference)
  })
})