You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: expectations_test.rb
    path of file: ./repos/steep/test
    
    the code of the file until where you have to start completion: require_relative "test_helper"

class ExpectationsTest < Minitest::Test
  include TestHelper
  include ShellHelper
  include Steep

  Diagnostic = Expectations::Diagnostic

  LSP = LanguageServer::Protocol

  def test_load
   
    
  def test_testresult
    ds = [
      Diagnostic.new(
        start_position: { line: 3, character: 0 },
        end_position: { line: 3, character: 7 },
        severity: :error,
        code: "Ruby::UnresolvedOverloading",
        message: "Diagnostic 1"
      ),
      Diagnostic.new(
        start_position: { line: 3, character: 3 },
        end_position: { line: 3, character: 7 },
        severity: :error,
        code: "Ruby::UnresolvedOverloading",
        message: "Diagnostic 2"
      ),
      Diagnostic.new(
        start_position: { line: 4, character: 0 },
        end_position: { line: 5, character: 0 },
        severity: :error,
        code: "Ruby::UnresolvedOverloading",
        message: "Diagnostic 3"
      )
    ]

    result = Expectations::TestResult.new(
      path: Pathname("foo.rb"),
      expectation: ds[0..1],
      actual: ds[1..2]
    )

    refute_predicate result, :empty?
    refute_predicate result, :satisfied?

    assert_equal [ds[1]], result.expected_diagnostics
    assert_equal [ds[0]], result.missing_diagnostics
    assert_equal [ds[2]], result.unexpected_diagnostics
  end