Additional tests for complex options

[bufdev]

https://github.com/googleapis/googleapis/blob/master/google/privacy/dlp/v2beta2/dlp.proto#L109

#50

[emicklei]

thanks, will look into this one

[emicklei]

starting from this comment in Proto3 spec

// alternative aggregate syntax (uses TextFormat):

I found this in https://developers.google.com/protocol-buffers/docs/reference/cpp/google.protobuf.text_format

static bool TextFormat::Parse(
        io::ZeroCopyInputStream * input,
        Message * output)
Parses a text-format protocol message from the given input stream to the given message object.

This function parses the human-readable format written by Print(). Returns true on success. The message is cleared first, even if the function fails – See Merge() to avoid this behavior.

Example input: "user {\n id: 123 extra { gender: MALE language: 'en' }\n}"

No real spec found so I guess we keep doing exception-driven-developement