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: test_memory_view.rb
    path of file: ./repos/jruby/test/mri/fiddle
    
    the code of the file until where you have to start completion: # frozen_string_literal: true
begin
  require_relative 'helper'
rescue LoadError
  return
end

begin
  require '-test-/memory_view'
rescue LoadError
  return
end

module Fiddle
  class TestMemoryView < TestCase
    def setup
      omit "MemoryView is unavailable" unless defined? Fiddle::MemoryView
    end

    def test_null_ptr
      assert_raise(ArgumentError) do
        MemoryView.new(Fiddle::NULL)
      end
    end

    def test_memory_view_from_unsupported_obj
      obj = Object.new
      assert_raise(ArgumentError) do
        MemoryView.new(obj)
      end
    end

    def test_memory_view_from_pointer
      str = Marshal.load(Marshal.dump("hello worl
    
    def test_memory_view_multi_dimensional
      omit "MemoryViewTestUtils is unavailable" unless defined? MemoryViewTestUtils

      buf = [ 1, 2, 3, 4,
              5, 6, 7, 8,
              9, 10, 11, 12 ].pack("l!*")
      shape = [3, 4]
      md = MemoryViewTestUtils::MultiDimensionalView.new(buf, "l!", shape, nil)
      mview = Fiddle::MemoryView.new(md)
      assert_equal(buf.bytesize, mview.byte_size)
      assert_equal("l!", mview.format)
      assert_equal(Fiddle::SIZEOF_LONG, mview.item_size)
      assert_equal(2, mview.ndim)
      assert_equal(shape, mview.shape)
      assert_equal([Fiddle::SIZEOF_LONG*4, Fiddle::SIZEOF_LONG], mview.strides)
      assert_equal(nil, mview.sub_offsets)
      assert_equal(1, mview[0, 0])
      assert_equal(4, mview[0, 3])
      assert_equal(6, mview[1, 1])
      assert_equal(10, mview[2, 1])
    end