✨ call .toString() on non-String headers

[techouse]

Enable the user to specify non-String type header values by calling .toString() on any non-String Dart type, i.e.

@Get(path: 'headers')
Future<Response<String>> getHeaders({
  @Header('x-string') String stringHeader,

  /// Using any of the these would have thrown a runtime type error before
  @Header('x-boolean') bool? boolHeader,
  @Header('x-int') int? intHeader,
  @Header('x-double') double? doubleHeader,
  @Header('x-enum') ExampleEnum? enumHeader,
});

This will get generated as

@override
Future<Response<String>> getHeaders({
  required String? stringHeader,
  bool? boolHeader,
  int? intHeader,
  double? doubleHeader,
  ExampleEnum? enumHeader,
}) {
  final Uri $url = Uri.parse('/test/headers');
  final Map<String, String> $headers = {
    if (stringHeader != null) 'x-string': stringHeader, // <-- is a `String`, nothing to do here
    if (boolHeader != null) 'x-boolean': boolHeader.toString(), // <-- calls `.toString()` on a `bool`
    if (intHeader != null) 'x-int': intHeader.toString(), // <-- calls `.toString()` on an `int`
    if (doubleHeader != null) 'x-double': doubleHeader.toString(), // <-- calls `.toString()` on a `double`
    if (enumHeader != null) 'x-enum': enumHeader.toString(), // <-- calls `.toString()` on an `enum`
  };
  final Request $request = Request(
    'GET',
    $url,
    client.baseUrl,
    headers: $headers,
  );
  return client.send<String, String>($request);
}

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (33cb73a) 94.02% compared to head (e93426f) 94.02%.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #538   +/-   ##
========================================
  Coverage    94.02%   94.02%           
========================================
  Files           10       10           
  Lines          469      469           
========================================
  Hits           441      441           
  Misses          28       28           

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[techouse]

@JEuler @Guldem thoughts?

[Guldem]

Nice addition! Got 1 minor feedback thingy.

[techouse]

@JEuler bump 😇

[JEuler]

Hmm, looks cool little addition! Sorry for missing it firstly.