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-rw-r--r--lib/dpkg/t/t-varbuf.c475
1 files changed, 475 insertions, 0 deletions
diff --git a/lib/dpkg/t/t-varbuf.c b/lib/dpkg/t/t-varbuf.c
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--- /dev/null
+++ b/lib/dpkg/t/t-varbuf.c
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+/*
+ * libdpkg - Debian packaging suite library routines
+ * t-varbuf.c - test varbuf implementation
+ *
+ * Copyright © 2009-2011, 2013-2015 Guillem Jover <guillem@debian.org>
+ *
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+#include <compat.h>
+
+#include <dpkg/test.h>
+#include <dpkg/varbuf.h>
+
+#include <string.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+static void
+test_varbuf_init(void)
+{
+ struct varbuf vb;
+
+ varbuf_init(&vb, 0);
+ test_pass(vb.used == 0);
+ test_pass(vb.size == 0);
+ test_pass(vb.buf == NULL);
+
+ varbuf_destroy(&vb);
+ test_pass(vb.used == 0);
+ test_pass(vb.size == 0);
+ test_pass(vb.buf == NULL);
+}
+
+static void
+test_varbuf_prealloc(void)
+{
+ struct varbuf vb;
+
+ varbuf_init(&vb, 10);
+ test_pass(vb.used == 0);
+ test_pass(vb.size >= 10);
+ test_pass(vb.buf != NULL);
+
+ varbuf_destroy(&vb);
+ test_pass(vb.used == 0);
+ test_pass(vb.size == 0);
+ test_pass(vb.buf == NULL);
+}
+
+static void
+test_varbuf_new(void)
+{
+ struct varbuf *vb;
+
+ vb = varbuf_new(0);
+ test_pass(vb != NULL);
+ test_pass(vb->used == 0);
+ test_pass(vb->size == 0);
+ test_pass(vb->buf == NULL);
+ varbuf_free(vb);
+
+ vb = varbuf_new(10);
+ test_pass(vb != NULL);
+ test_pass(vb->used == 0);
+ test_pass(vb->size >= 10);
+ test_pass(vb->buf != NULL);
+ varbuf_free(vb);
+}
+
+static void
+test_varbuf_grow(void)
+{
+ struct varbuf vb;
+ jmp_buf grow_jump;
+ size_t old_size;
+ bool grow_overflow;
+ int i;
+
+ varbuf_init(&vb, 10);
+
+ /* Test that we grow when needed. */
+ varbuf_grow(&vb, 100);
+ test_pass(vb.used == 0);
+ test_pass(vb.size >= 100);
+
+ old_size = vb.size;
+
+ /* Test that we are not leaking. */
+ for (i = 0; i < 10; i++) {
+ varbuf_grow(&vb, 100);
+ test_pass(vb.used == 0);
+ test_pass(vb.size >= 100);
+ test_pass(vb.size == old_size);
+ }
+
+ /* Test that we grow when needed, with used space. */
+ vb.used = 10;
+ varbuf_grow(&vb, 100);
+ test_pass(vb.used == 10);
+ test_pass(vb.size >= 110);
+
+ /* Test that we do not allow allocation overflows. */
+ grow_overflow = false;
+ old_size = vb.size;
+ test_try(grow_jump) {
+ varbuf_grow(&vb, SIZE_MAX - vb.size + 2);
+ } test_catch {
+ grow_overflow = true;
+ } test_finally;
+ test_pass(vb.size == old_size && grow_overflow);
+
+ grow_overflow = false;
+ old_size = vb.size;
+ test_try(grow_jump) {
+ varbuf_grow(&vb, (SIZE_MAX - vb.size - 2) / 2);
+ } test_catch {
+ grow_overflow = true;
+ } test_finally;
+ test_pass(vb.size == old_size && grow_overflow);
+
+ varbuf_destroy(&vb);
+}
+
+static void
+test_varbuf_trunc(void)
+{
+ struct varbuf vb;
+
+ varbuf_init(&vb, 50);
+
+ /* Test that we truncate (grow). */
+ varbuf_trunc(&vb, 20);
+ test_pass(vb.used == 20);
+ test_pass(vb.size >= 50);
+
+ /* Test that we truncate (shrink). */
+ varbuf_trunc(&vb, 10);
+ test_pass(vb.used == 10);
+ test_pass(vb.size >= 50);
+
+ varbuf_destroy(&vb);
+}
+
+static void
+test_varbuf_add_buf(void)
+{
+ struct varbuf vb;
+
+ varbuf_init(&vb, 5);
+
+ varbuf_add_buf(&vb, "1234567890", 10);
+ test_pass(vb.used == 10);
+ test_pass(vb.size >= vb.used);
+ test_mem(vb.buf, ==, "1234567890", 10);
+
+ varbuf_add_buf(&vb, "abcde", 5);
+ test_pass(vb.used == 15);
+ test_pass(vb.size >= vb.used);
+ test_mem(vb.buf, ==, "1234567890abcde", 15);
+
+ varbuf_destroy(&vb);
+}
+
+static void
+test_varbuf_add_char(void)
+{
+ struct varbuf vb;
+
+ varbuf_init(&vb, 1);
+
+ varbuf_add_char(&vb, 'a');
+ test_pass(vb.used == 1);
+ test_pass(vb.size >= vb.used);
+ test_pass(vb.buf[0] == 'a');
+
+ varbuf_add_char(&vb, 'b');
+ test_pass(vb.used == 2);
+ test_pass(vb.size >= vb.used);
+ test_mem(vb.buf, ==, "ab", 2);
+
+ varbuf_add_char(&vb, 'c');
+ test_pass(vb.used == 3);
+ test_pass(vb.size >= vb.used);
+ test_mem(vb.buf, ==, "abc", 3);
+
+ varbuf_add_char(&vb, 'd');
+ test_pass(vb.used == 4);
+ test_pass(vb.size >= vb.used);
+ test_mem(vb.buf, ==, "abcd", 4);
+
+ varbuf_destroy(&vb);
+}
+
+static void
+test_varbuf_dup_char(void)
+{
+ struct varbuf vb;
+
+ varbuf_init(&vb, 5);
+
+ varbuf_dup_char(&vb, 'z', 10);
+ test_pass(vb.used == 10);
+ test_pass(vb.size >= vb.used);
+ test_mem(vb.buf, ==, "zzzzzzzzzz", 10);
+
+ varbuf_dup_char(&vb, 'y', 5);
+ test_pass(vb.used == 15);
+ test_pass(vb.size >= vb.used);
+ test_mem(vb.buf, ==, "zzzzzzzzzzyyyyy", 15);
+
+ varbuf_destroy(&vb);
+}
+
+static void
+test_varbuf_map_char(void)
+{
+ struct varbuf vb;
+
+ varbuf_init(&vb, 5);
+
+ varbuf_add_buf(&vb, "1234a5678a9012a", 15);
+
+ varbuf_map_char(&vb, 'a', 'z');
+ test_pass(vb.used == 15);
+ test_pass(vb.size >= vb.used);
+ test_mem(vb.buf, ==, "1234z5678z9012z", 15);
+
+ varbuf_destroy(&vb);
+}
+
+static void
+test_varbuf_add_dir(void)
+{
+ struct varbuf vb;
+
+ varbuf_init(&vb, 10);
+
+ varbuf_add_dir(&vb, "");
+ varbuf_end_str(&vb);
+ test_str(vb.buf, ==, "/");
+ varbuf_add_dir(&vb, "");
+ varbuf_end_str(&vb);
+ test_str(vb.buf, ==, "/");
+ varbuf_add_dir(&vb, "aa");
+ varbuf_end_str(&vb);
+ test_str(vb.buf, ==, "/aa/");
+ varbuf_add_dir(&vb, "");
+ varbuf_end_str(&vb);
+ test_str(vb.buf, ==, "/aa/");
+
+ varbuf_reset(&vb);
+
+ varbuf_add_dir(&vb, "/foo/bar");
+ varbuf_end_str(&vb);
+ test_str(vb.buf, ==, "/foo/bar/");
+
+ varbuf_reset(&vb);
+
+ varbuf_add_dir(&vb, "/foo/bar/");
+ varbuf_end_str(&vb);
+ test_str(vb.buf, ==, "/foo/bar/");
+ varbuf_add_dir(&vb, "quux");
+ varbuf_end_str(&vb);
+ test_str(vb.buf, ==, "/foo/bar/quux/");
+ varbuf_add_dir(&vb, "zoo");
+ varbuf_end_str(&vb);
+ test_str(vb.buf, ==, "/foo/bar/quux/zoo/");
+
+ varbuf_destroy(&vb);
+}
+
+static void
+test_varbuf_end_str(void)
+{
+ struct varbuf vb;
+
+ varbuf_init(&vb, 10);
+
+ varbuf_add_buf(&vb, "1234567890X", 11);
+ test_pass(vb.used == 11);
+ test_pass(vb.size >= vb.used);
+ test_mem(vb.buf, ==, "1234567890X", 11);
+
+ varbuf_trunc(&vb, 10);
+
+ varbuf_end_str(&vb);
+ test_pass(vb.used == 10);
+ test_pass(vb.size >= vb.used + 1);
+ test_pass(vb.buf[10] == '\0');
+ test_str(vb.buf, ==, "1234567890");
+
+ varbuf_destroy(&vb);
+}
+
+static void
+test_varbuf_get_str(void)
+{
+ struct varbuf vb;
+ const char *str;
+
+ varbuf_init(&vb, 10);
+
+ varbuf_add_buf(&vb, "1234567890", 10);
+ str = varbuf_get_str(&vb);
+ test_pass(vb.buf == str);
+ test_pass(vb.used == 10);
+ test_pass(vb.buf[vb.used] == '\0');
+ test_pass(str[vb.used] == '\0');
+ test_str(vb.buf, ==, "1234567890");
+ test_str(str, ==, "1234567890");
+
+ varbuf_add_buf(&vb, "abcde", 5);
+ str = varbuf_get_str(&vb);
+ test_pass(vb.buf == str);
+ test_pass(vb.used == 15);
+ test_pass(vb.buf[vb.used] == '\0');
+ test_pass(str[vb.used] == '\0');
+ test_str(vb.buf, ==, "1234567890abcde");
+ test_str(str, ==, "1234567890abcde");
+
+ varbuf_destroy(&vb);
+}
+
+static void
+test_varbuf_printf(void)
+{
+ struct varbuf vb;
+
+ varbuf_init(&vb, 5);
+
+ /* Test normal format printing. */
+ varbuf_printf(&vb, "format %s number %d", "string", 10);
+ test_pass(vb.used == strlen("format string number 10"));
+ test_pass(vb.size >= vb.used);
+ test_str(vb.buf, ==, "format string number 10");
+
+ varbuf_reset(&vb);
+
+ /* Test concatenated format printing. */
+ varbuf_printf(&vb, "format %s number %d", "string", 10);
+ varbuf_printf(&vb, " extra %s", "string");
+ test_pass(vb.used == strlen("format string number 10 extra string"));
+ test_pass(vb.size >= vb.used);
+ test_str(vb.buf, ==, "format string number 10 extra string");
+
+ varbuf_destroy(&vb);
+}
+
+static void
+test_varbuf_reset(void)
+{
+ struct varbuf vb;
+
+ varbuf_init(&vb, 10);
+
+ varbuf_add_buf(&vb, "1234567890", 10);
+
+ varbuf_reset(&vb);
+ test_pass(vb.used == 0);
+ test_pass(vb.size >= vb.used);
+
+ varbuf_add_buf(&vb, "abcdefghijklmno", 15);
+ test_pass(vb.used == 15);
+ test_pass(vb.size >= vb.used);
+ test_mem(vb.buf, ==, "abcdefghijklmno", 15);
+
+ varbuf_destroy(&vb);
+}
+
+static void
+test_varbuf_snapshot(void)
+{
+ struct varbuf vb;
+ struct varbuf_state vbs;
+
+ varbuf_init(&vb, 0);
+
+ test_pass(vb.used == 0);
+ varbuf_snapshot(&vb, &vbs);
+ test_pass(vb.used == 0);
+ test_pass(vb.used == vbs.used);
+ test_pass(varbuf_rollback_len(&vbs) == 0);
+ test_str(varbuf_rollback_start(&vbs), ==, "");
+
+ varbuf_add_buf(&vb, "1234567890", 10);
+ varbuf_end_str(&vb);
+ test_pass(vb.used == 10);
+ test_pass(varbuf_rollback_len(&vbs) == 10);
+ test_str(varbuf_rollback_start(&vbs), ==, "1234567890");
+ varbuf_rollback(&vbs);
+ varbuf_end_str(&vb);
+ test_pass(vb.used == 0);
+ test_pass(varbuf_rollback_len(&vbs) == 0);
+ test_str(varbuf_rollback_start(&vbs), ==, "");
+
+ varbuf_add_buf(&vb, "1234567890", 10);
+ varbuf_end_str(&vb);
+ test_pass(vb.used == 10);
+ test_pass(varbuf_rollback_len(&vbs) == 10);
+ test_str(varbuf_rollback_start(&vbs), ==, "1234567890");
+ varbuf_snapshot(&vb, &vbs);
+ test_pass(vb.used == 10);
+ test_pass(varbuf_rollback_len(&vbs) == 0);
+ test_str(varbuf_rollback_start(&vbs), ==, "");
+
+ varbuf_add_buf(&vb, "1234567890", 10);
+ varbuf_end_str(&vb);
+ test_pass(vb.used == 20);
+ test_pass(varbuf_rollback_len(&vbs) == 10);
+ test_str(varbuf_rollback_start(&vbs), ==, "1234567890");
+ varbuf_rollback(&vbs);
+ varbuf_end_str(&vb);
+ test_pass(vb.used == 10);
+ test_pass(varbuf_rollback_len(&vbs) == 0);
+ test_str(varbuf_rollback_start(&vbs), ==, "");
+
+ varbuf_destroy(&vb);
+}
+
+static void
+test_varbuf_detach(void)
+{
+ struct varbuf vb;
+ char *str;
+
+ varbuf_init(&vb, 0);
+
+ varbuf_add_buf(&vb, "1234567890", 10);
+
+ str = varbuf_detach(&vb);
+
+ test_mem(str, ==, "1234567890", 10);
+ test_pass(vb.used == 0);
+ test_pass(vb.size == 0);
+ test_pass(vb.buf == NULL);
+
+ free(str);
+}
+
+TEST_ENTRY(test)
+{
+ test_plan(152);
+
+ test_varbuf_init();
+ test_varbuf_prealloc();
+ test_varbuf_new();
+ test_varbuf_grow();
+ test_varbuf_trunc();
+ test_varbuf_add_buf();
+ test_varbuf_add_char();
+ test_varbuf_dup_char();
+ test_varbuf_map_char();
+ test_varbuf_add_dir();
+ test_varbuf_end_str();
+ test_varbuf_get_str();
+ test_varbuf_printf();
+ test_varbuf_reset();
+ test_varbuf_snapshot();
+ test_varbuf_detach();
+
+ /* TODO: Complete. */
+}
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