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require "test/unit"
require "objspace"
require_relative "../ruby/envutil"
class TestObjSpace < Test::Unit::TestCase
def test_memsize_of
assert_equal(0, ObjectSpace.memsize_of(true))
assert_equal(0, ObjectSpace.memsize_of(nil))
assert_equal(0, ObjectSpace.memsize_of(1))
assert_kind_of(Integer, ObjectSpace.memsize_of(Object.new))
assert_kind_of(Integer, ObjectSpace.memsize_of(Class))
assert_kind_of(Integer, ObjectSpace.memsize_of(""))
assert_kind_of(Integer, ObjectSpace.memsize_of([]))
assert_kind_of(Integer, ObjectSpace.memsize_of({}))
assert_kind_of(Integer, ObjectSpace.memsize_of(//))
f = File.new(__FILE__)
assert_kind_of(Integer, ObjectSpace.memsize_of(f))
f.close
assert_kind_of(Integer, ObjectSpace.memsize_of(/a/.match("a")))
assert_kind_of(Integer, ObjectSpace.memsize_of(Struct.new(:a)))
assert_operator(ObjectSpace.memsize_of(Regexp.new("(a)"*1000).match("a"*1000)),
:>,
ObjectSpace.memsize_of(//.match("")))
end
def test_argf_memsize
size = ObjectSpace.memsize_of(ARGF)
assert_kind_of(Integer, size)
assert_operator(size, :>, 0)
argf = ARGF.dup
argf.inplace_mode = nil
size = ObjectSpace.memsize_of(argf)
argf.inplace_mode = "inplace_mode_suffix"
assert_equal(size + 20, ObjectSpace.memsize_of(argf))
end
def test_memsize_of_all
assert_kind_of(Integer, a = ObjectSpace.memsize_of_all)
assert_kind_of(Integer, b = ObjectSpace.memsize_of_all(String))
assert(a > b)
assert(a > 0)
assert(b > 0)
assert_raise(TypeError) {ObjectSpace.memsize_of_all('error')}
end
def test_count_objects_size
res = ObjectSpace.count_objects_size
assert_equal(false, res.empty?)
assert_equal(true, res[:TOTAL] > 0)
arg = {}
ObjectSpace.count_objects_size(arg)
assert_equal(false, arg.empty?)
end
def test_count_nodes
res = ObjectSpace.count_nodes
assert_equal(false, res.empty?)
arg = {}
ObjectSpace.count_nodes(arg)
assert_not_empty(arg)
bug8014 = '[ruby-core:53130] [Bug #8014]'
assert_empty(arg.select {|k, v| !(Symbol === k && Integer === v)}, bug8014)
end
def test_count_tdata_objects
res = ObjectSpace.count_tdata_objects
assert_equal(false, res.empty?)
arg = {}
ObjectSpace.count_tdata_objects(arg)
assert_equal(false, arg.empty?)
end
def test_reachable_objects_from
assert_separately %w[--disable-gem -robjspace], __FILE__, __LINE__, <<-'eom'
assert_equal(nil, ObjectSpace.reachable_objects_from(nil))
assert_equal([Array, 'a', 'b', 'c'], ObjectSpace.reachable_objects_from(['a', 'b', 'c']))
assert_equal([Array, 'a', 'a', 'a'], ObjectSpace.reachable_objects_from(['a', 'a', 'a']))
assert_equal([Array, 'a', 'a'], ObjectSpace.reachable_objects_from(['a', v = 'a', v]))
assert_equal([Array, 'a'], ObjectSpace.reachable_objects_from([v = 'a', v, v]))
long_ary = Array.new(1_000){''}
max = 0
ObjectSpace.each_object{|o|
refs = ObjectSpace.reachable_objects_from(o)
max = [refs.size, max].max
unless refs.nil?
refs.each_with_index {|ro, i|
assert_not_nil(ro, "#{i}: this referenced object is internal object")
}
end
}
assert_operator(max, :>=, long_ary.size+1, "1000 elems + Array class")
eom
end
def test_reachable_objects_size
assert_separately %w[--disable-gem -robjspace], __FILE__, __LINE__, <<-'eom'
ObjectSpace.each_object{|o|
ObjectSpace.reachable_objects_from(o).each{|reached_obj|
size = ObjectSpace.memsize_of(reached_obj)
assert_kind_of(Integer, size)
assert_operator(size, :>=, 0)
}
}
eom
end
def test_trace_object_allocations
o0 = Object.new
ObjectSpace.trace_object_allocations{
o1 = Object.new; line1 = __LINE__; c1 = GC.count
o2 = "xyzzy" ; line2 = __LINE__; c2 = GC.count
o3 = [1, 2] ; line3 = __LINE__; c3 = GC.count
assert_equal(nil, ObjectSpace.allocation_sourcefile(o0))
assert_equal(nil, ObjectSpace.allocation_sourceline(o0))
assert_equal(nil, ObjectSpace.allocation_generation(o0))
assert_equal(line1, ObjectSpace.allocation_sourceline(o1))
assert_equal(__FILE__, ObjectSpace.allocation_sourcefile(o1))
assert_equal(c1, ObjectSpace.allocation_generation(o1))
assert_equal(Class.name, ObjectSpace.allocation_class_path(o1))
assert_equal(:new, ObjectSpace.allocation_method_id(o1))
assert_equal(__FILE__, ObjectSpace.allocation_sourcefile(o2))
assert_equal(line2, ObjectSpace.allocation_sourceline(o2))
assert_equal(c2, ObjectSpace.allocation_generation(o2))
assert_equal(self.class.name, ObjectSpace.allocation_class_path(o2))
assert_equal(__method__, ObjectSpace.allocation_method_id(o2))
assert_equal(__FILE__, ObjectSpace.allocation_sourcefile(o3))
assert_equal(line3, ObjectSpace.allocation_sourceline(o3))
assert_equal(c3, ObjectSpace.allocation_generation(o3))
assert_equal(self.class.name, ObjectSpace.allocation_class_path(o3))
assert_equal(__method__, ObjectSpace.allocation_method_id(o3))
}
end
def test_trace_object_allocations_start_stop_clear
begin
ObjectSpace.trace_object_allocations_start
begin
ObjectSpace.trace_object_allocations_start
begin
ObjectSpace.trace_object_allocations_start
obj0 = Object.new
ensure
ObjectSpace.trace_object_allocations_stop
obj1 = Object.new
end
ensure
ObjectSpace.trace_object_allocations_stop
obj2 = Object.new
end
ensure
ObjectSpace.trace_object_allocations_stop
obj3 = Object.new
end
assert_equal(__FILE__, ObjectSpace.allocation_sourcefile(obj0))
assert_equal(__FILE__, ObjectSpace.allocation_sourcefile(obj1))
assert_equal(__FILE__, ObjectSpace.allocation_sourcefile(obj2))
assert_equal(nil , ObjectSpace.allocation_sourcefile(obj3)) # after tracing
ObjectSpace.trace_object_allocations_clear
assert_equal(nil, ObjectSpace.allocation_sourcefile(obj0))
assert_equal(nil, ObjectSpace.allocation_sourcefile(obj1))
assert_equal(nil, ObjectSpace.allocation_sourcefile(obj2))
assert_equal(nil, ObjectSpace.allocation_sourcefile(obj3))
end
end
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