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| author | Hans Bolinder <[email protected]> | 2019-02-26 10:11:59 +0100 |
|---|---|---|
| committer | Hans Bolinder <[email protected]> | 2019-03-05 12:02:25 +0100 |
| commit | cd5dbd5204a783743c72116d81e993ec041b7396 (patch) | |
| tree | 16673271f8c9e97b2aafd41f2c6287358f56f9a1 /lib/stdlib/test | |
| parent | 23c33d5b8d5234a159b0dc39e2fe6aa99dadaed2 (diff) | |
| download | otp-cd5dbd5204a783743c72116d81e993ec041b7396.tar.gz otp-cd5dbd5204a783743c72116d81e993ec041b7396.tar.bz2 otp-cd5dbd5204a783743c72116d81e993ec041b7396.zip | |
stdlib: Correct and optimize pretty printing of strings
Avoid traversing all of the list/string when only part of it will be
used. An explicit check that the list is flat is needed since
string:slice() accepts deep lists and more.
Diffstat (limited to 'lib/stdlib/test')
| -rw-r--r-- | lib/stdlib/test/io_SUITE.erl | 39 |
1 files changed, 36 insertions, 3 deletions
diff --git a/lib/stdlib/test/io_SUITE.erl b/lib/stdlib/test/io_SUITE.erl index f097552e8c..824f5d19f2 100644 --- a/lib/stdlib/test/io_SUITE.erl +++ b/lib/stdlib/test/io_SUITE.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1999-2018. All Rights Reserved. +%% Copyright Ericsson AB 1999-2019. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -32,7 +32,7 @@ io_with_huge_message_queue/1, format_string/1, maps/1, coverage/1, otp_14178_unicode_atoms/1, otp_14175/1, otp_14285/1, limit_term/1, otp_14983/1, otp_15103/1, otp_15076/1, - otp_15159/1]). + otp_15159/1, otp_15639/1]). -export([pretty/2, trf/3]). @@ -64,7 +64,8 @@ all() -> io_lib_print_binary_depth_one, otp_10302, otp_10755, otp_10836, io_lib_width_too_small, io_with_huge_message_queue, format_string, maps, coverage, otp_14178_unicode_atoms, otp_14175, - otp_14285, limit_term, otp_14983, otp_15103, otp_15076, otp_15159]. + otp_14285, limit_term, otp_14983, otp_15103, otp_15076, otp_15159, + otp_15639]. %% Error cases for output. error_1(Config) when is_list(Config) -> @@ -2647,3 +2648,35 @@ otp_15076(_Config) -> {'EXIT', {badarg, _}} = (catch io_lib:build_text(L)), {'EXIT', {badarg, _}} = (catch io_lib:build_text(L, [])), ok. + +otp_15639(_Config) -> + L = lists:duplicate(10, "a"), + LOpts = [{encoding, latin1}, {chars_limit, 10}], + UOpts = [{encoding, unicode}, {chars_limit, 10}], + "[[...]|...]" = pretty(L, LOpts), + "[[...]|...]" = pretty(L, UOpts), + "[\"a\",[...]|...]" = + pretty(L, [{chars_limit, 12}, {encoding, latin1}]), + "[\"a\",[...]|...]" = + pretty(L, [{chars_limit, 12}, {encoding, unicode}]), + + %% Latin-1 + "\"12345678\"" = pretty("12345678", LOpts), + "\"12345678\"..." = pretty("123456789", LOpts), + "\"\\r\\n123456\"..." = pretty("\r\n1234567", LOpts), + "\"\\r1234567\"..." = pretty("\r12345678", LOpts), + "\"\\r\\n123456\"..." = pretty("\r\n12345678", LOpts), + "\"12345678\"..." = pretty("12345678"++[x], LOpts), + "[49,50|...]" = pretty("1234567"++[x], LOpts), + "[49,x]" = pretty("1"++[x], LOpts), + "[[...]|...]" = pretty(["1","2","3","4","5","6","7","8"], LOpts), + %% Unicode + "\"12345678\"" = pretty("12345678", UOpts), + "\"12345678\"..." = pretty("123456789", UOpts), + "\"\\r\\n1234567\"" = pretty("\r\n1234567", UOpts), + "\"\\r1234567\"..." = pretty("\r12345678", UOpts), + "\"\\r\\n1234567\"..." = pretty("\r\n12345678", UOpts), + "[49,50|...]" = pretty("12345678"++[x], UOpts), + "\"12345678\"..." = pretty("123456789"++[x], UOpts), + "[[...]|...]" = pretty(["1","2","3","4","5","6","7","8"], UOpts), + ok. |