AgilityPayload.go

// AgilityPayload canonical payload shape for agility "REST" methods.
// Use this if you don't want to make structs for your backend call,
// but still want to access deeply nested fields which you wouldn't
// be able to dereference when using map[string]interface{}.
type AgilityPayload map[string]map[string]map[string][]map[string]interface{}

// ToMap to let you dump a map of names to meaningless objects
// into an even less useful map of names to meaningless objects.
// _this_ is what you'd pass to the RequestBody.
func (c *AgilityPayload) ToMap() map[string]interface{} {
	result := make(map[string]interface{})
	for k, v := range *c {
		result[k] = v
	}
	return result
}

creditCardCashReceipts.go

// ToAgilityPayload is like our "toMap" functions, except it's returning
// AgilityPayload instead of map[string]interface{}. Still a map
// of names to meaningless objects though, it's just that we can
// inspect those meaningless objects because we know the structure.
func (c *CreditCardPaymentRequest) ToAgilityPayload() AgilityPayload {
	m := AgilityPayload{
		"EcomCashRcptCCPaymentJSON": {
			"dsEcomCashRcptPayment": {
				"dtEcomPayment": {
					{
						"customerID":             c.Data.Attributes.CustomerID,
						"shipToSequence":         c.Data.Attributes.ShiptoSequence,
						"processorTransactionID": c.Data.Attributes.CreditCardSurchage,
						"paymentAmount":          c.Data.Attributes.PaymentAmount,
					},
				},
			},
		},
	}
	return m
}

creditCardCashReceipts_test.go

func TestAgilityPayload_ToMap(t *testing.T) {
  // AgilityPayload obviates the need for putting
  // map[string]interface{} or []map[string]interface{} here
	payload := AgilityPayload{
		"EcomCashRcptCCPaymentJSON": {
			"dsEcomCashRcptPayment": {
				"dtEcomSelectedInvoiceList": {
					{"aropenGUID": "56B5DCC7-75E8-4A11-85C2-3B2D8799918A"},
				},
				"dtEcomSelectedCreditInvoiceList": {
					{"aropenGUID": "1C68A5FE-6241-4FAC-9311-C5F2A4D19A5C"},
				},
			},
		},
	}

	assert.Equal(t, "56B5DCC7-75E8-4A11-85C2-3B2D8799918A", payload["EcomCashRcptCCPaymentJSON"]["dsEcomCashRcptPayment"]["dtEcomSelectedInvoiceList"][0]["aropenGUID"])
	assert.Equal(t, "1C68A5FE-6241-4FAC-9311-C5F2A4D19A5C", payload["EcomCashRcptCCPaymentJSON"]["dsEcomCashRcptPayment"]["dtEcomSelectedCreditInvoiceList"][0]["aropenGUID"])

	expected := map[string]interface{}{
		"EcomCashRcptCCPaymentJSON": map[string]interface{}{
			"dsEcomCashRcptPayment": map[string]interface{}{
				"dtEcomSelectedInvoiceList": []map[string]interface{}{
					{"aropenGUID": "56B5DCC7-75E8-4A11-85C2-3B2D8799918A"},
				},
				"dtEcomSelectedCreditInvoiceList": []map[string]interface{}{
					{"aropenGUID": "1C68A5FE-6241-4FAC-9311-C5F2A4D19A5C"},
				},
			},
		},
	}
	expectedBytes, err := json.Marshal(expected)
	assert.NoError(t, err)
	payloadBytes, err := json.Marshal(payload)
	assert.NoError(t, err)

	assert.JSONEq(t, string(expectedBytes), string(payloadBytes))
}