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require "test_helper"

class ApiCallRaiseTest < Minitest::Test
  def test_traps_exception
    api_meth_stub = proc do |*_args|
      raise Google::Gax::GaxError
    end

    api_call = Google::Gax::ApiCall.new(
      api_meth_stub
    )

    assert_raises Google::Gax::GaxError do
      api_call.call Object.new
    end
  end

  def test_traps_wrapped_exception
    api_meth_stub = proc do
      raise FakeCodeError.new("Not a real GRPC error",
                              GRPC::Core::StatusCodes::UNAVAILABLE)
    end

    api_call = Google::Gax::ApiCall.new(
      api_meth_stub
    )

    assert_raises FakeCodeError do
      api_call.call Object.new
    end
  end

  def test_wraps_grpc_errors
    deadline_arg = nil
    call_count = 0

    api_meth_stub = proc do |deadline: nil, **_kwargs|
      deadline_arg = deadline
      call_count += 1
      raise GRPC::BadStatus.new(2, "unknown")
    end

    api_call = Google::Gax::ApiCall.new api_meth_stub

    exc = assert_raises Google::Gax::GaxError do
      api_call.call Object.new
    end
    assert_kind_of GRPC::BadStatus, exc.cause

    assert_kind_of Time, deadline_arg
    assert_equal 1, call_count
  end

  def test_wont_wrap_non_grpc_errors
    deadline_arg = nil
    call_count = 0

    api_meth_stub = proc do |deadline: nil, **_kwargs|
      deadline_arg = deadline
      call_count += 1
      raise FakeCodeError.new("Not a real GRPC error",
                              GRPC::Core::StatusCodes::UNAVAILABLE)
    end

    api_call = Google::Gax::ApiCall.new api_meth_stub

    assert_raises FakeCodeError do
      api_call.call Object.new
    end
    assert_kind_of Time, deadline_arg
    assert_equal 1, call_count
  end
end
