WithQueryObject encode empty values to empty string

[sanikoyes]

The form.EncodeToValues interface used in the WithQueryObject function will escape the empty value in the query object into an empty string "", such as the number 0, or a length 0 of array/slice/map etc.

Please provide an option to turn off this feature when create httpexpect.Expect, (the form library can create an Encoder and then call KeepZeros(false) to disable this feature)

[gavv]

Hi, thanks for report.

Pushed to master: 7844b86

You can now use WithQueryEncoder() with three encoders available:

	// QueryEncoderGoogle encodes query using google/go-querystring package.
	// Query object should be a struct annotated with `url` tags.
	// See https://github.com/google/go-querystring.
	QueryEncoderGoogle

	// QueryEncoderForm encodes query using ajg/form package.
	// Query object can be arbitrary type including maps and structs
	// annotated with `form` tags.
	// See https://github.com/ajg/form.
	QueryEncoderForm

	// QueryEncoderFormKeepZeros is same as QueryEncoderForm, but with KeepZeros
	// flag enabled. With this flag, encoder keeps zero (default) values in their
	// literal form when encoding, and returns the former; by default zero values
	// are not kept, but are rather encoded as the empty string.
	QueryEncoderFormKeepZeros

Please provide an option to turn off this feature when create httpexpect.Expect

Such options are usually per-request, because otherwise httpexpect.Config would quickly become a mess. But you can easily make it global by using a request builder:

e := httpexpect.Default(t, "http://example.com")

e2 := e.Builder(func (req *httpexpect.Request) {
	req.WithQueryEncoder(httpexpect.QueryEncoderFormKeepZeros)
})

// now use e2 everywhere

I'm closing the issue, but feel free to re-open if you have any troubles.