src/ruby/spec/call_credentials_spec.rb

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require 'grpc'

describe GRPC::Core::CallCredentials do
  CallCredentials = GRPC::Core::CallCredentials

  let(:auth_proc) { proc { { 'plugin_key' => 'plugin_value' } } }

  describe '#new' do
    it 'can successfully create a CallCredentials from a proc' do
      expect { CallCredentials.new(auth_proc) }.not_to raise_error
    end
  end

  describe '#compose' do
    it 'can compose with another CallCredentials' do
      creds1 = CallCredentials.new(auth_proc)
      creds2 = CallCredentials.new(auth_proc)
      expect { creds1.compose creds2 }.not_to raise_error
    end

    it 'can compose with multiple CallCredentials' do
      creds1 = CallCredentials.new(auth_proc)
      creds2 = CallCredentials.new(auth_proc)
      creds3 = CallCredentials.new(auth_proc)
      expect { creds1.compose(creds2, creds3) }.not_to raise_error
    end
  end
end