require 'spec_helper'
require 'flydata-core/string_utils'

describe FlydataCore::StringUtils do
  let(:str) { '' }
  let(:expected_str) { str }

  subject { described_class.replace_invalid_utf8_char(str) }

  shared_examples 'return_expected_str' do
    it { is_expected.to eq(expected_str) }
  end

  context 'with non-invalid char' do
    context 'with ascii code str' do
      let(:str) { 'abcdefg' }
      it_behaves_like 'return_expected_str'
    end

    context 'with empty str' do
      let(:str) { '' }
      it_behaves_like 'return_expected_str'
    end

    context 'with UTF-8 char' do
      let(:str) { 'あいうえお' }
      it_behaves_like 'return_expected_str'
    end
  end

  context 'with invalid char' do
    context 'with ascii and invalid str' do
      let(:str) { "abc\255def" }
      let(:expected_str) { 'abc?def' }
      it_behaves_like 'return_expected_str'
    end

    context 'with UTF-8 and invalid str' do
      let(:str) { "あいう\255えお" }
      let(:expected_str) { "あいう?えお" }
      it_behaves_like 'return_expected_str'
    end
  end
end