A package of custom types for Gripmock that solves JSON serialization/deserialization problems.

In issue #648, a problem was identified with deserializing string time values into time.Duration. When trying to use JSON like:

{
  "output": {
    "delay": "100ms"
  }
}

The following error occurred:

json: cannot unmarshal number { into Go struct field Output.Delay of type time.Duration

The types package provides a custom Duration type that correctly handles string time values in JSON.

A custom type alias for time.Duration that provides JSON marshaling/unmarshaling support for string values.

Only string values are supported:

{
  "delay": "100ms"
}

Valid duration formats:

• "100ms" - milliseconds
• "2s" - seconds
• "1m" - minutes
• "1h" - hours
• "1h30m" - combined formats

type Output struct {
    Delay types.Duration `json:"delay"`
    Data  map[string]interface{} `json:"data"`
}

var output Output
json.Unmarshal([]byte(`{"delay": "100ms"}`), &output)

// Access the duration value
duration := time.Duration(output.Delay)

go get github.com/gripmock/types

go test ./...

MIT License - see LICENSE file.