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rvalue reference outputs

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Document rvalue reference outputs behaviour
Test rvalue reference outputs
This commit is contained in:
William S Fulton 2022-09-08 08:46:32 +01:00
commit 2212af3f4f
26 changed files with 659 additions and 344 deletions
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Examples/test-suite/ruby/cpp11_rvalue_reference_move_runme.rb Normal file
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#!/usr/bin/env ruby
require 'swig_assert'
require 'cpp11_rvalue_reference_move'
# Function containing rvalue reference parameter
Cpp11_rvalue_reference_move::Counter.reset_counts()
mo = Cpp11_rvalue_reference_move::MovableCopyable.new(222)
Cpp11_rvalue_reference_move::Counter.check_counts(1, 0, 0, 0, 0, 0)
Cpp11_rvalue_reference_move::MovableCopyable.movein(mo)
Cpp11_rvalue_reference_move::Counter.check_counts(1, 0, 0, 1, 0, 2)
exception_thrown = false
begin
Cpp11_rvalue_reference_move::MovableCopyable.is_nullptr(mo)
rescue ObjectPreviouslyDeleted
exception_thrown = true
end
if (!exception_thrown)
raise RuntimeError, "is_nullptr failed to throw"
end
mo = nil
Cpp11_rvalue_reference_move::Counter.check_counts(1, 0, 0, 1, 0, 2)
# Move constructor test
Cpp11_rvalue_reference_move::Counter.reset_counts()
mo = Cpp11_rvalue_reference_move::MovableCopyable.new(222)
Cpp11_rvalue_reference_move::Counter.check_counts(1, 0, 0, 0, 0, 0)
mo_moved = Cpp11_rvalue_reference_move::MovableCopyable.new(mo)
Cpp11_rvalue_reference_move::Counter.check_counts(1, 0, 0, 1, 0, 1)
exception_thrown = false
begin
Cpp11_rvalue_reference_move::MovableCopyable.is_nullptr(mo)
rescue ObjectPreviouslyDeleted
exception_thrown = true
end
if (!exception_thrown)
raise RuntimeError, "is_nullptr failed to throw"
end
mo = nil
Cpp11_rvalue_reference_move::Counter.check_counts(1, 0, 0, 1, 0, 1)
# mo_moved = nil
# Cpp11_rvalue_reference_move::Counter.check_counts(1, 0, 0, 1, 0, 2)
# Above not deleting the C++ object(node v12) - can't reliably control GC - use the movein function instead to delete
Cpp11_rvalue_reference_move::MovableCopyable.movein(mo_moved)
Cpp11_rvalue_reference_move::Counter.check_counts(1, 0, 0, 2, 0, 3)
# Move assignment operator test
Cpp11_rvalue_reference_move::Counter.reset_counts()
mo111 = Cpp11_rvalue_reference_move::MovableCopyable.new(111)
mo222 = Cpp11_rvalue_reference_move::MovableCopyable.new(222)
Cpp11_rvalue_reference_move::Counter.check_counts(2, 0, 0, 0, 0, 0)
mo111.MoveAssign(mo222)
Cpp11_rvalue_reference_move::Counter.check_counts(2, 0, 0, 0, 1, 1)
exception_thrown = false
begin
Cpp11_rvalue_reference_move::MovableCopyable.is_nullptr(mo222)
rescue ObjectPreviouslyDeleted
exception_thrown = true
end
if (!exception_thrown)
raise RuntimeError, "is_nullptr failed to throw"
end
mo222 = nil
Cpp11_rvalue_reference_move::Counter.check_counts(2, 0, 0, 0, 1, 1)
# mo111 = nil
# Cpp11_rvalue_reference_move::Counter.check_counts(2, 0, 0, 0, 1, 2)
# Above not deleting the C++ object(node v12) - can't reliably control GC - use the movein function instead to delete
Cpp11_rvalue_reference_move::MovableCopyable.movein(mo111)
Cpp11_rvalue_reference_move::Counter.check_counts(2, 0, 0, 1, 1, 3)
# null check
Cpp11_rvalue_reference_move::Counter.reset_counts()
exception_thrown = false
begin
Cpp11_rvalue_reference_move::MovableCopyable.movein(nil)
rescue ArgumentError => e
if (!e.to_s.include? "invalid null reference")
raise RuntimeError, "incorrect exception message: #{e.to_s}"
end
exception_thrown = true
end
if (!exception_thrown)
raise RuntimeError, "Should have thrown null error"
end
Cpp11_rvalue_reference_move::Counter.check_counts(0, 0, 0, 0, 0, 0)
# output
Cpp11_rvalue_reference_move::Counter.reset_counts()
mc = Cpp11_rvalue_reference_move::MovableCopyable.moveout(1234)
Cpp11_rvalue_reference_move::Counter.check_counts(2, 0, 0, 0, 1, 1)
Cpp11_rvalue_reference_move::MovableCopyable.check_numbers_match(mc, 1234)
exception_thrown = false
begin
Cpp11_rvalue_reference_move::MovableCopyable.movein(mc)
rescue RuntimeError => e
if (!e.to_s.include? "cannot release ownership as memory is not owned")
raise RuntimeError, "incorrect exception message: #{e.to_s}"
end
exception_thrown = true
end
if (!exception_thrown)
raise RuntimeError, "Should have thrown 'Cannot release ownership as memory is not owned' error"
end
Cpp11_rvalue_reference_move::Counter.check_counts(2, 0, 0, 0, 1, 1)