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-rw-r--r--lib/io/Makemodule.am12
-rw-r--r--lib/io/test/istream_read.c136
-rw-r--r--lib/io/test/istream_skip.c125
3 files changed, 271 insertions, 2 deletions
diff --git a/lib/io/Makemodule.am b/lib/io/Makemodule.am
index 17952f4..b8c03f6 100644
--- a/lib/io/Makemodule.am
+++ b/lib/io/Makemodule.am
@@ -23,7 +23,15 @@ test_get_line_CPPFLAGS += -DTESTFILE=$(top_srcdir)/lib/io/test/get_line.txt
test_sparse_fb_SOURCES = lib/io/test/sparse_fb.c
test_sparse_fb_LDADD = libio.a libutil.a libcompat.a
-check_PROGRAMS += test_get_line test_sparse_fb
-TESTS += test_get_line test_sparse_fb
+test_istream_read_SOURCES = lib/io/test/istream_read.c
+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
+
+check_PROGRAMS += test_get_line test_sparse_fb test_istream_read
+check_PROGRAMS += test_istream_skip
+TESTS += test_get_line test_sparse_fb test_istream_read
+TESTS += test_istream_skip
EXTRA_DIST += $(top_srcdir)/lib/io/test/get_line.txt
diff --git a/lib/io/test/istream_read.c b/lib/io/test/istream_read.c
new file mode 100644
index 0000000..3e4c22f
--- /dev/null
+++ b/lib/io/test/istream_read.c
@@ -0,0 +1,136 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * istream_read.c
+ *
+ * Copyright (C) 2023 David Oberhollenzer <goliath@infraroot.at>
+ */
+#include "config.h"
+
+#include "io/istream.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 buffer[103]; /* sliding window into the file */
+static sqfs_u64 offset = 0; /* byte offset into the "file" */
+
+static int dummy_precache(istream_t *strm);
+static const char *dummy_get_filename(istream_t *strm);
+
+static istream_t dummy = {
+ {
+ 1,
+ NULL,
+ NULL,
+ },
+ 0,
+ 0,
+ false,
+ buffer,
+ dummy_precache,
+ dummy_get_filename,
+};
+
+static int dummy_precache(istream_t *strm)
+{
+ sqfs_u8 x;
+
+ TEST_ASSERT(strm == &dummy);
+
+ while (strm->buffer_used < sizeof(buffer)) {
+ if (offset < end0) {
+ x = 'A';
+ } else if (offset < end1) {
+ x = 'B';
+ } else if (offset < end2) {
+ x = 'C';
+ } else {
+ strm->eof = true;
+ break;
+ }
+
+ strm->buffer[strm->buffer_used++] = x;
+ ++offset;
+ }
+
+ return 0;
+}
+
+static const char *dummy_get_filename(istream_t *strm)
+{
+ TEST_ASSERT(strm == &dummy);
+ return "dummy file";
+}
+
+int main(int argc, char **argv)
+{
+ sqfs_u8 read_buffer[61];
+ sqfs_u64 read_off = 0;
+ const char *name;
+ (void)argc; (void)argv;
+
+ name = istream_get_filename(&dummy);
+ TEST_NOT_NULL(name);
+ TEST_STR_EQUAL(name, "dummy file");
+
+ /* region 1 */
+ while (read_off < end0) {
+ size_t read_diff = end0 - read_off;
+
+ if (read_diff > sizeof(read_buffer))
+ read_diff = sizeof(read_buffer);
+
+ int ret = istream_read(&dummy, read_buffer, read_diff);
+ TEST_ASSERT(ret > 0);
+ TEST_ASSERT((size_t)ret <= read_diff);
+
+ for (int i = 0; i < ret; ++i) {
+ TEST_EQUAL_UI(read_buffer[i], 'A');
+ }
+
+ read_off += ret;
+ }
+
+ /* region 2 */
+ while (read_off < end1) {
+ size_t read_diff = end1 - read_off;
+
+ if (read_diff > sizeof(read_buffer))
+ read_diff = sizeof(read_buffer);
+
+ int ret = istream_read(&dummy, read_buffer, read_diff);
+ TEST_ASSERT(ret > 0);
+ TEST_ASSERT((size_t)ret <= read_diff);
+
+ for (int i = 0; i < ret; ++i) {
+ TEST_EQUAL_UI(read_buffer[i], 'B');
+ }
+
+ read_off += ret;
+ }
+
+ /* region 3 */
+ for (;;) {
+ size_t read_diff = sizeof(read_buffer);
+
+ int ret = istream_read(&dummy, read_buffer, read_diff);
+ TEST_ASSERT(ret >= 0);
+ TEST_ASSERT((size_t)ret <= read_diff);
+
+ if (ret == 0) {
+ TEST_EQUAL_UI(read_off, end2);
+ break;
+ }
+
+ for (int i = 0; i < ret; ++i) {
+ TEST_EQUAL_UI(read_buffer[i], 'C');
+ }
+
+ read_off += ret;
+ TEST_ASSERT(read_off <= end2);
+ }
+
+ return EXIT_SUCCESS;
+}
diff --git a/lib/io/test/istream_skip.c b/lib/io/test/istream_skip.c
new file mode 100644
index 0000000..3197b8b
--- /dev/null
+++ b/lib/io/test/istream_skip.c
@@ -0,0 +1,125 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * istream_skip.c
+ *
+ * Copyright (C) 2023 David Oberhollenzer <goliath@infraroot.at>
+ */
+#include "config.h"
+
+#include "io/istream.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 buffer[103]; /* sliding window into the file */
+static sqfs_u64 offset = 0; /* byte offset into the "file" */
+
+static int dummy_precache(istream_t *strm);
+static const char *dummy_get_filename(istream_t *strm);
+
+static istream_t dummy = {
+ {
+ 1,
+ NULL,
+ NULL,
+ },
+ 0,
+ 0,
+ false,
+ buffer,
+ dummy_precache,
+ dummy_get_filename,
+};
+
+static int dummy_precache(istream_t *strm)
+{
+ sqfs_u8 x;
+
+ TEST_ASSERT(strm == &dummy);
+
+ while (strm->buffer_used < sizeof(buffer)) {
+ if (offset < end0) {
+ x = 'A';
+ } else if (offset < end1) {
+ x = 'B';
+ } else if (offset < end2) {
+ x = 'C';
+ } else {
+ strm->eof = true;
+ break;
+ }
+
+ strm->buffer[strm->buffer_used++] = x;
+ ++offset;
+ }
+
+ return 0;
+}
+
+static const char *dummy_get_filename(istream_t *strm)
+{
+ TEST_ASSERT(strm == &dummy);
+ return "dummy file";
+}
+
+int main(int argc, char **argv)
+{
+ sqfs_u8 read_buffer[61];
+ sqfs_u64 read_off = 0;
+ const char *name;
+ (void)argc; (void)argv;
+
+ name = istream_get_filename(&dummy);
+ TEST_NOT_NULL(name);
+ TEST_STR_EQUAL(name, "dummy file");
+
+ /* region 1 */
+ while (read_off < end0) {
+ size_t read_diff = end0 - read_off;
+
+ if (read_diff > sizeof(read_buffer))
+ read_diff = sizeof(read_buffer);
+
+ int ret = istream_read(&dummy, read_buffer, read_diff);
+ TEST_ASSERT(ret > 0);
+ TEST_ASSERT((size_t)ret <= read_diff);
+
+ for (int i = 0; i < ret; ++i) {
+ TEST_EQUAL_UI(read_buffer[i], 'A');
+ }
+
+ read_off += ret;
+ }
+
+ /* region 2 */
+ {
+ int ret = istream_skip(&dummy, end2 - end1);
+ TEST_EQUAL_I(ret, 0);
+ read_off += (end2 - end1);
+ }
+
+ /* region 3 */
+ for (;;) {
+ size_t read_diff = sizeof(read_buffer);
+
+ int ret = istream_read(&dummy, read_buffer, read_diff);
+ TEST_ASSERT(ret >= 0);
+ TEST_ASSERT((size_t)ret <= read_diff);
+
+ if (ret == 0) {
+ TEST_EQUAL_UI(read_off, end2);
+ break;
+ }
+
+ for (int i = 0; i < ret; ++i) {
+ TEST_EQUAL_UI(read_buffer[i], 'C');
+ }
+
+ read_off += ret;
+ TEST_ASSERT(read_off <= end2);
+ }
+
+ return EXIT_SUCCESS;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-26 17:15:44 +0000