Is It Possible To Apply PassThrough() Within A Mock Reply Using Axios-mock-adapter?

Environment: NodeJS 8.1.2 axios 0.16.2 axios-mock-adapter 1.9.0 Testing a JSON-RPC endpoint, am I able to do something like this: const mockHttpClient = new MockAdapter(axios, { d

Solution 1:

You can do that by passing the call to the original adapter within the reply callback :

mockHttpClient.onPost().reply((config) => { // Capture all POST methods
  const dataObj = JSON.parse(config.data) // Example data: '{"jsonrpc":"2.0","method":"getProduct","params":[123],"id":0}'

  if (dataObj.method === 'getProduct') { // Recognised method, provide mock response override
    return [200, { jsonrpc: '2.0', id: 0, result: { productId: 123, productName: 'Lorem' } }]
  }

  // PassThrough for all non-recognised methods
  return mockHttpClient.originalAdapter(config);
})

It's essentially what passThrough() does.