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(*
* Copyright (c) 2016 Xavier R. Guérin <xguerin@users.noreply.github.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*)
open OUnit2
open Bitstring
(*
* Imbricated bitstring test
*)
let imbricated_bistring_test context =
let result = "\xde\xad\xbe\xef\x42\x0a" in
let magic = "\xde\xad\xbe\xef" in
let version = 0x42 in
let data = 10 in
let header = [%bitstring {| version : 8 |}] in
let bits = [%bitstring
{| magic : -1 : string
; header : -1 : bitstring
; data : 8
|}] in
let dump = Bitstring.string_of_bitstring bits in
assert_equal result dump
(*
* Constructor style test
*)
let constructor_style_test context =
let%bitstring bits1 = {| "GIF87a" : 6*8 : string
; 2145 : 16 : littleendian
; 2145 : 16 : littleendian
; true : 1
; 7 : 3
; false : 1
; 7 : 3
; 0 : 8
; 0 : 8
|} in
let bits2 = [%bitstring {| "GIF87a" : 6*8 : string
; 2145 : 16 : littleendian
; 2145 : 16 : littleendian
; true : 1
; 7 : 3
; false : 1
; 7 : 3
; 0 : 8
; 0 : 8
|}] in
assert_bool "Bistrings are not equal" (Bitstring.equals bits1 bits2)
(*
* Swap test
*)
let swap bs =
match%bitstring bs with
| {| a : 1 : bitstring; b : 1 : bitstring|} ->
[%bitstring {| b : 1 : bitstring; a : 1 : bitstring |}]
| {| _ |} -> failwith "invalid input"
let swap_test context =
let one = [%bitstring {| 1 : 2 |}] in
let two = [%bitstring {| 2 : 2 |}] in
let three = [%bitstring {| 3 : 2 |}] in
assert_bool "Bitstring swap failed" (Bitstring.equals two (swap one));
assert_bool "Bitstring swap failed" (Bitstring.equals one (swap two));
assert_bool "Bitstring swap failed" (Bitstring.equals three (swap three))
(*
* External value test
*)
let external_value_test context =
let result = "\x00\x02\x00\x00\x00\x01\xC0" in
let int16_value = 2 in
let int32_value = 1_l in
let bool_value = true in
let bits = [%bitstring {| int16_value : 16
; int32_value : 32
; 1 : 1
; bool_value : 1
; 0 : 6
|}] in
let str = Bitstring.string_of_bitstring bits in
assert_equal str result
(*
* Int for [17,31] bits test
*)
let int_parser_test context =
let result = "\x00\x00\x02" in
let%bitstring bits = {| 2 : 24 |} in
let str = Bitstring.string_of_bitstring bits in
assert_equal str result
(*
* Int32 for 32 bits test
*)
let int32_parser_test context =
let result = "\x00\x00\x00\x02" in
let%bitstring bits = {| 2_l : 32 |} in
let str = Bitstring.string_of_bitstring bits in
assert_equal str result
(*
* Structural let
*)
let%bitstring ext_bits = {| 2_l : 32 |}
let str_item_test context =
let result = "\x00\x00\x00\x02" in
let str = Bitstring.string_of_bitstring ext_bits in
assert_equal str result
(*
* Subtyping.
*)
let subtype_test context =
let x = 42 in
let%bitstring b = {| x : 6 |} in
let%bitstring c = {| (x :> int) : 6 |} in
assert (Bitstring.equals b c)
(*
* Test suite definition
*)
let suite = "BitstringConstructorTest" >::: [
"imbricated_bistring_test" >:: imbricated_bistring_test;
"constructor_style_test" >:: constructor_style_test;
"swap_test" >:: swap_test;
"external_value_test" >:: external_value_test;
"int_parser_test" >:: int_parser_test;
"int32_parser_test" >:: int32_parser_test;
"str_item_test" >:: str_item_test;
"subtype_test" >:: subtype_test;
]
let () = run_test_tt_main suite
|
