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require_relative 'test_base'
require_relative '../ruby/envutil'
module DL
class TestCPtr < TestBase
def test_cptr_to_int
null = DL::NULL
assert_equal(null.to_i, null.to_int)
end
def test_malloc_free_func_int
free = CFunc.new(DL::RUBY_FREE, TYPE_VOID, 'free')
ptr = CPtr.malloc(10, free.to_i)
assert_equal 10, ptr.size
assert_equal free.to_i, ptr.free.to_i
end
def test_malloc_free_func
free = CFunc.new(DL::RUBY_FREE, TYPE_VOID, 'free')
ptr = CPtr.malloc(10, free)
assert_equal 10, ptr.size
assert_equal free.to_i, ptr.free.to_i
end
def test_to_str
str = "hello world"
ptr = CPtr[str]
assert_equal 3, ptr.to_str(3).length
assert_equal str, ptr.to_str
ptr[5] = 0
assert_equal "hello\0world", ptr.to_str
end
def test_to_s
str = "hello world"
ptr = CPtr[str]
assert_equal 3, ptr.to_s(3).length
assert_equal str, ptr.to_s
ptr[5] = 0
assert_equal 'hello', ptr.to_s
end
def test_minus
str = "hello world"
ptr = CPtr[str]
assert_equal ptr.to_s, (ptr + 3 - 3).to_s
end
# TODO: what if the pointer size is 0? raise an exception? do we care?
def test_plus
str = "hello world"
ptr = CPtr[str]
new_str = ptr + 3
assert_equal 'lo world', new_str.to_s
end
def test_inspect
ptr = CPtr.new(0)
inspect = ptr.inspect
assert_match(/size=#{ptr.size}/, inspect)
assert_match(/free=#{sprintf("%#x", ptr.free.to_i)}/, inspect)
assert_match(/ptr=#{sprintf("%#x", ptr.to_i)}/, inspect)
end
def test_to_ptr_string
str = "hello world"
ptr = CPtr[str]
assert ptr.tainted?, 'pointer should be tainted'
assert_equal str.length, ptr.size
assert_equal 'hello', ptr[0,5]
end
def test_to_ptr_io
buf = CPtr.malloc(10)
File.open(__FILE__, 'r') do |f|
ptr = CPtr.to_ptr f
fread = CFunc.new(@libc['fread'], TYPE_VOID, 'fread')
fread.call([buf.to_i, DL::SIZEOF_CHAR, buf.size - 1, ptr.to_i])
end
File.open(__FILE__, 'r') do |f|
assert_equal f.read(9), buf.to_s
end
end
def test_to_ptr_with_ptr
ptr = CPtr.new 0
ptr2 = CPtr.to_ptr Struct.new(:to_ptr).new(ptr)
assert_equal ptr, ptr2
assert_raises(DL::DLError) do
CPtr.to_ptr Struct.new(:to_ptr).new(nil)
end
end
def test_to_ptr_with_num
ptr = CPtr.new 0
assert_equal ptr, CPtr[0]
end
def test_equals
ptr = CPtr.new 0
ptr2 = CPtr.new 0
assert_equal ptr2, ptr
end
def test_not_equals
ptr = CPtr.new 0
assert_not_equal 10, ptr, '10 should not equal the pointer'
end
def test_cmp
ptr = CPtr.new 0
assert_nil(ptr <=> 10, '10 should not be comparable')
end
def test_ref_ptr
ary = [0,1,2,4,5]
addr = CPtr.new(dlwrap(ary))
assert_equal addr.to_i, addr.ref.ptr.to_i
assert_equal addr.to_i, (+ (- addr)).to_i
end
def test_to_value
ary = [0,1,2,4,5]
addr = CPtr.new(dlwrap(ary))
assert_equal ary, addr.to_value
end
def test_free
ptr = CPtr.malloc(4)
assert_nil ptr.free
end
def test_free=
assert_normal_exit(<<-"End", '[ruby-dev:39269]')
require 'dl'
DL::LIBC_SO = #{DL::LIBC_SO.dump}
DL::LIBM_SO = #{DL::LIBM_SO.dump}
include DL
@libc = dlopen(LIBC_SO)
@libm = dlopen(LIBM_SO)
free = CFunc.new(DL::RUBY_FREE, TYPE_VOID, 'free')
ptr = CPtr.malloc(4)
ptr.free = free
free.ptr
ptr.free.ptr
End
free = CFunc.new(DL::RUBY_FREE, TYPE_VOID, 'free')
ptr = CPtr.malloc(4)
ptr.free = free
assert_equal free.ptr, ptr.free.ptr
end
def test_null?
ptr = CPtr.new(0)
assert ptr.null?
end
def test_size
ptr = CPtr.malloc(4)
assert_equal 4, ptr.size
DL.free ptr.to_i
end
def test_size=
ptr = CPtr.malloc(4)
ptr.size = 10
assert_equal 10, ptr.size
DL.free ptr.to_i
end
def test_aref_aset
check = Proc.new{|str,ptr|
assert_equal(str.size(), ptr.size())
assert_equal(str, ptr.to_s())
assert_equal(str[0,2], ptr.to_s(2))
assert_equal(str[0,2], ptr[0,2])
assert_equal(str[1,2], ptr[1,2])
assert_equal(str[1,0], ptr[1,0])
assert_equal(str[0].ord, ptr[0])
assert_equal(str[1].ord, ptr[1])
}
str = 'abc'
ptr = CPtr[str]
check.call(str, ptr)
str[0] = "c"
assert_equal 'c'.ord, ptr[0] = "c".ord
check.call(str, ptr)
str[0,2] = "aa"
assert_equal 'aa', ptr[0,2] = "aa"
check.call(str, ptr)
ptr2 = CPtr['cdeeee']
str[0,2] = "cd"
assert_equal ptr2, ptr[0,2] = ptr2
check.call(str, ptr)
ptr3 = CPtr['vvvv']
str[0,2] = "vv"
assert_equal ptr3.to_i, ptr[0,2] = ptr3.to_i
check.call(str, ptr)
end
end
end
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