describe ChatWork::OAuthClient do
  describe "#initialize" do
    subject do
      ChatWork::OAuthClient.new(
        client_id:     client_id,
        client_secret: client_secret,
        api_base:      api_base,
      )
    end

    let(:client_id)     { "client_id" }
    let(:client_secret) { "client_secret" }
    let(:api_base)      { "https://token.chatwork.com/" }
    let(:signature)     { "Y2xpZW50X2lkOmNsaWVudF9zZWNyZXQ=" }

    it "client has Authorization header" do
      connection = subject.instance_variable_get(:@conn)

      expect(connection.headers["Authorization"]).to eq "Basic #{signature}"
    end
  end
end