# GoCryptoTrader package Mock
[](https://github.com/thrasher-corp/gocryptotrader/actions/workflows/tests.yml)
[](https://github.com/thrasher-corp/gocryptotrader/blob/master/LICENSE)
[](https://godoc.org/github.com/thrasher-corp/gocryptotrader/exchanges/mock)
[](https://codecov.io/gh/thrasher-corp/gocryptotrader)
[](https://goreportcard.com/report/github.com/thrasher-corp/gocryptotrader)
This mock package is part of the GoCryptoTrader codebase.
## This is still in active development
You can track ideas, planned features and what's in progress on our [GoCryptoTrader Kanban board](https://github.com/orgs/thrasher-corp/projects/3).
Join our slack to discuss all things related to GoCryptoTrader! [GoCryptoTrader Slack](https://join.slack.com/t/gocryptotrader/shared_invite/zt-38z8abs3l-gH8AAOk8XND6DP5NfCiG_g)
## Mock Testing Suite
## Current Features for mock
+ REST recording service
+ REST mock response server
### How to enable
+ Any exchange with mock testing will be enabled by default. This is done using build tags which are highlighted in the examples below via `//+build mock_test_off`. To disable and run live endpoint testing parse `-tags=mock_test_off` as a go test param.
## Mock test setup
+ Create two additional test files for the exchange. Examples are below:
### file one - your_current_exchange_name_live_test.go
```go
//+build mock_test_off
// This will build if build tag mock_test_off is parsed and will do live testing
// using all tests in (exchange)_test.go
package your_current_exchange_name
import (
"os"
"testing"
"log"
"github.com/thrasher-corp/gocryptotrader/config"
"github.com/thrasher-corp/gocryptotrader/exchanges/sharedtestvalues"
)
var mockTests = false
func TestMain(m *testing.M) {
cfg := config.GetConfig()
cfg.LoadConfig("../../testdata/configtest.json")
your_current_exchange_nameConfig, err := cfg.GetExchangeConfig("your_current_exchange_name")
if err != nil {
log.Fatal("your_current_exchange_name Setup() init error", err)
}
your_current_exchange_nameConfig.API.AuthenticatedSupport = true
your_current_exchange_nameConfig.API.Credentials.Key = apiKey
your_current_exchange_nameConfig.API.Credentials.Secret = apiSecret
s.SetDefaults()
s.Setup(&your_current_exchange_nameConfig)
log.Printf(sharedtestvalues.LiveTesting, s.Name, s.API.Endpoints.URL)
os.Exit(m.Run())
}
```
### file two - your_current_exchange_name_mock_test.go
```go
//+build !mock_test_off
// This will build if build tag mock_test_off is not parsed and will try to mock
// all tests in _test.go
package your_current_exchange_name
import (
"os"
"testing"
"log"
"github.com/thrasher-corp/gocryptotrader/config"
"github.com/thrasher-corp/gocryptotrader/exchanges/mock"
"github.com/thrasher-corp/gocryptotrader/exchanges/sharedtestvalues"
)
const mockfile = "../../testdata/http_mock/your_current_exchange_name/your_current_exchange_name.json"
var mockTests = true
func TestMain(m *testing.M) {
cfg := config.GetConfig()
cfg.LoadConfig("../../testdata/configtest.json")
your_current_exchange_nameConfig, err := cfg.GetExchangeConfig("your_current_exchange_name")
if err != nil {
log.Fatal("your_current_exchange_name Setup() init error", err)
}
your_current_exchange_nameConfig.API.AuthenticatedSupport = true
your_current_exchange_nameConfig.API.Credentials.Key = apiKey
your_current_exchange_nameConfig.API.Credentials.Secret = apiSecret
s.SetDefaults()
s.Setup(&your_current_exchange_nameConfig)
serverDetails, newClient, err := mock.NewVCRServer(mockfile)
if err != nil {
log.Fatalf("Mock server error %s", err)
}
s.HTTPClient = newClient
s.API.Endpoints.URL = serverDetails
log.Printf(sharedtestvalues.MockTesting, s.Name, s.API.Endpoints.URL)
os.Exit(m.Run())
}
```
## Mock test storage
+ Under `testdata/http_mock` create a folder matching the name of your exchange. Then create a JSON file matching the name of your exchange with the following formatting:
```
{
"routes": {
}
}
```
## Recording a test result
+ Once the files `your_current_exchange_name_mock_test.go` and `your_current_exchange_name_live_test.go` along with the JSON file `testdata/http_mock/our_current_exchange_name/our_current_exchange_name.json` are created, go through each individual test function and add
```go
var s SomeExchange
func TestDummyTest(t *testing.T) {
s.Verbose = true // This will show you some fancy debug output
s.HTTPRecording = true // This will record the request and response payloads
s.API.Endpoints.URL = apiURL // This will overwrite the current mock url at localhost
s.API.Endpoints.URLSecondary = secondAPIURL // This is only if your API has multiple endpoints
s.HTTPClient = http.DefaultClient // This will ensure that a real HTTPClient is used to record
err := s.SomeExchangeEndpointFunction()
// check error
}
```
+ This will store the request and results under the freshly created `testdata/http_mock/your_current_exchange/your_current_exchange.json`
## Validating
+ To check if the recording was successful, comment out recording and apiurl changes, then re-run test.
```go
var s SomeExchange
func TestDummyTest(t *testing.T) {
s.Verbose = true // This will show you some fancy debug output
// s.HTTPRecording = true // This will record the request and response payloads
// s.API.Endpoints.URL = apiURL // This will overwrite the current mock url at localhost
// s.API.Endpoints.URLSecondary = secondAPIURL // This is only if your API has multiple endpoints
// s.HTTPClient = http.DefaultClient // This will ensure that a real HTTPClient is used to record
err := s.SomeExchangeEndpointFunction()
// check error
}
```
+ The payload should be the same.
## Considerations
+ Some functions require timestamps. Mock tests _must_ match the same request structure, so `time.Now()` will cause problems for mock testing.
+ To address this, use the boolean variable `mockTests` to create a consistent date. An example is below.
```
startTime := time.Now().Add(-time.Hour * 1)
endTime := time.Now()
if mockTests {
startTime = time.Date(2020, 9, 1, 0, 0, 0, 0, time.UTC)
endTime = time.Date(2020, 9, 2, 0, 0, 0, 0, time.UTC)
}
```
+ Authenticated endpoints will typically require valid API keys and a signature to run successfully. Authenticated endpoints should be skipped. See an example below
```
if mockTests {
t.Skip("skipping authenticated function for mock testing")
}
```
## Donations
If this framework helped you in any way, or you would like to support the developers working on it, please donate Bitcoin to:
***bc1qk0jareu4jytc0cfrhr5wgshsq8282awpavfahc***