spec/support/matchers/model/model_have_error_on_field.rb


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RSpec::Matchers.define :model_have_error_on_field do |expected|
  match do |record|
    if record.errors.empty?
      record.valid?
    end

    record.errors.has_key?(expected)
  end

  failure_message do |record|
    keys = record.errors.attribute_names

    "expect record.errors(#{keys}) to include #{expected}"
  end
end