diff options
Diffstat (limited to 'lib/io')
| -rw-r--r-- | lib/io/Makemodule.am | 7 | ||||
| -rw-r--r-- | lib/io/test/stream_splice.c | 118 |
2 files changed, 123 insertions, 2 deletions
diff --git a/lib/io/Makemodule.am b/lib/io/Makemodule.am index b8c03f6..b795788 100644 --- a/lib/io/Makemodule.am +++ b/lib/io/Makemodule.am @@ -29,9 +29,12 @@ test_istream_read_LDADD = libio.a libutil.a libcompat.a test_istream_skip_SOURCES = lib/io/test/istream_skip.c test_istream_skip_LDADD = libio.a libutil.a libcompat.a +test_stream_splice_SOURCES = lib/io/test/stream_splice.c +test_stream_splice_LDADD = libio.a libutil.a libcompat.a + check_PROGRAMS += test_get_line test_sparse_fb test_istream_read -check_PROGRAMS += test_istream_skip +check_PROGRAMS += test_istream_skip test_stream_splice TESTS += test_get_line test_sparse_fb test_istream_read -TESTS += test_istream_skip +TESTS += test_istream_skip test_stream_splice EXTRA_DIST += $(top_srcdir)/lib/io/test/get_line.txt diff --git a/lib/io/test/stream_splice.c b/lib/io/test/stream_splice.c new file mode 100644 index 0000000..c5ca38e --- /dev/null +++ b/lib/io/test/stream_splice.c @@ -0,0 +1,118 @@ +/* SPDX-License-Identifier: GPL-3.0-or-later */ +/* + * stream_splice.c + * + * Copyright (C) 2023 David Oberhollenzer <goliath@infraroot.at> + */ +#include "config.h" + +#include "io/istream.h" +#include "io/ostream.h" +#include "util/test.h" + +static const sqfs_u64 end0 = 449; /* region 1: filled with 'A' */ +static const sqfs_u64 end1 = 521; /* region 2: filled with 'B' */ +static const sqfs_u64 end2 = 941; /* region 3: filled with 'C' */ + +static sqfs_u8 byte_at_offset(sqfs_u64 off) +{ + if (off < end0) + return 'A'; + if (off < end1) + return 'B'; + return 'C'; +} + +/*****************************************************************************/ + +static int out_append(ostream_t *strm, const void *data, size_t size); + +static sqfs_u64 out_offset = 0; + +static ostream_t out = { + { 1, NULL, NULL }, + out_append, + NULL, + NULL, + NULL, +}; + +static int out_append(ostream_t *strm, const void *data, size_t size) +{ + const sqfs_u8 *ptr = data; + + TEST_ASSERT(strm == &out); + TEST_ASSERT(size > 0); + + while (size--) { + sqfs_u8 x = *(ptr++); + sqfs_u8 y = byte_at_offset(out_offset++); + + TEST_EQUAL_UI(x, y); + TEST_ASSERT(out_offset <= end2); + } + + return 0; +} + +/*****************************************************************************/ + +static int in_precache(istream_t *strm); + +static sqfs_u8 in_buffer[109]; +static sqfs_u64 in_offset = 0; + +static istream_t in = { + { 1, NULL, NULL }, + 0, + 0, + false, + in_buffer, + in_precache, + NULL, +}; + +static int in_precache(istream_t *strm) +{ + TEST_ASSERT(strm == &in); + + while (strm->buffer_used < sizeof(in_buffer)) { + if (in_offset == end2) { + strm->eof = true; + break; + } + + in_buffer[strm->buffer_used++] = byte_at_offset(in_offset++); + } + + return 0; +} + +/*****************************************************************************/ + +int main(int argc, char **argv) +{ + sqfs_u64 total = 0; + sqfs_s32 ret; + (void)argc; (void)argv; + + for (;;) { + ret = ostream_append_from_istream(&out, &in, 211); + TEST_ASSERT(ret >= 0); + + if (ret == 0) + break; + + total += ret; + TEST_ASSERT(total <= end2); + TEST_ASSERT(out_offset <= end2); + TEST_ASSERT(in_offset <= end2); + TEST_ASSERT(in_offset >= out_offset); + TEST_EQUAL_UI(total, out_offset); + } + + TEST_EQUAL_UI(total, end2); + TEST_EQUAL_UI(out_offset, end2); + TEST_EQUAL_UI(in_offset, end2); + return EXIT_SUCCESS; +} |