spec.unit.keyword_builder_spec
  ✅ KeywordBuilder with a simple struct builds a record with the builder
  ✅ KeywordBuilder with a simple struct builds a record combining arguments
  ✅ KeywordBuilder with a simple struct constructs an array when builder is given more than one argument
  ✅ KeywordBuilder with a simple struct constructs an array when builder is given arguments and a block
  ✅ KeywordBuilder with a simple struct constructs an hash when builder is given keyword arguments
  ✅ KeywordBuilder with a simple struct rejects arguments colliding with builder
  ✅ KeywordBuilder with a simple struct rejects repeated arguments
  ✅ KeywordBuilder with a simple struct requires an argument
  ✅ KeywordBuilder with a simple struct rejects mixed keyword and positional arguments
  ✅ KeywordBuilder with a simple struct rejects mixed keyword and block arguments
  ✅ KeywordBuilder with a simple struct rejects unknown arguments
  ✅ KeywordBuilder with a simple struct marks non-wildcard builders
  ✅ KeywordBuilder with a simple struct with wildcard arguments marks wildcard builders
  ✅ KeywordBuilder with a simple struct with wildcard arguments passes wildcard arguments