stxer-sdk/src/sample/counter.ts

import { uintCV } from '@stacks/transactions';
import { SimulationBuilder } from '..';

const sender = 'SP212Y5JKN59YP3GYG07K3S8W5SSGE4KH6B5STXER';

const test = () =>
  SimulationBuilder.new()
    .withSender(sender)
    .addContractDeploy({
      contract_name: 'test-simulation',
      source_code: `
;; counter example
(define-data-var counter uint u0)

(define-public (increment (delta uint))
  (begin
    (var-set counter (+ (var-get counter) delta))
    (ok (var-get counter))))

(define-public (decrement)
  (begin 
    (var-set counter (- (var-get counter) u1))
    (ok (var-get counter))))

(define-read-only (get-counter)
  (ok (var-get counter)))
`,
    })
    .addEvalCode(`${sender}.test-simulation`, '(get-counter)')
    .addContractCall({
      contract_id: `${sender}.test-simulation`,
      function_name: 'increment',
      function_args: [uintCV(10)],
    })
    .addEvalCode(`${sender}.test-simulation`, '(get-counter)')
    .run();

if (require.main === module) {
  (async () => {
    await test();
  })().catch(console.error);
}