1 files changed, 560 insertions, 0 deletions
diff --git a/lib/dpkg/t/t-varbuf.c b/lib/dpkg/t/t-varbuf.c
new file mode 100644
index 0000000..08998a5
--- /dev/null
+++ b/lib/dpkg/t/t-varbuf.c
@@ -0,0 +1,560 @@
+/*
+ * 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_set(void)
+{
+	struct varbuf vb, cb;
+
+	varbuf_init(&vb, 10);
+	varbuf_init(&cb, 10);
+
+	varbuf_set_buf(&vb, "1234567890", 5);
+	test_pass(vb.used == 5);
+	test_mem(vb.buf, ==, "12345", 5);
+
+	varbuf_set_buf(&vb, "abcd", 4);
+	test_pass(vb.used == 4);
+	test_mem(vb.buf, ==, "abcd", 4);
+
+	varbuf_set_varbuf(&cb, &vb);
+	test_pass(cb.used == 4);
+	test_mem(cb.buf, ==, "abcd", 4);
+
+	varbuf_set_str(&vb, "12345");
+	test_pass(vb.used == 5);
+	test_str(vb.buf, ==, "12345");
+
+	varbuf_set_strn(&vb, "1234567890", 8);
+	test_pass(vb.used == 8);
+	test_str(vb.buf, ==, "12345678");
+
+	varbuf_destroy(&cb);
+	varbuf_destroy(&vb);
+}
+
+static void
+test_varbuf_add_varbuf(void)
+{
+	struct varbuf vb, cb;
+
+	varbuf_init(&vb, 5);
+	varbuf_init(&cb, 0);
+
+	varbuf_set_str(&vb, "1234567890");
+	varbuf_add_varbuf(&cb, &vb);
+	test_pass(cb.used == 10);
+	test_pass(cb.size >= cb.used);
+	test_mem(cb.buf, ==, "1234567890", 10);
+
+	varbuf_set_str(&vb, "abcde");
+	varbuf_add_varbuf(&cb, &vb);
+	test_pass(cb.used == 15);
+	test_pass(cb.size >= cb.used);
+	test_mem(cb.buf, ==, "1234567890abcde", 15);
+
+	varbuf_destroy(&cb);
+	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_str(void)
+{
+	struct varbuf vb;
+
+	varbuf_init(&vb, 5);
+
+	varbuf_add_str(&vb, "1234567890");
+	varbuf_end_str(&vb);
+	test_str(vb.buf, ==, "1234567890");
+
+	varbuf_add_str(&vb, "abcd");
+	varbuf_end_str(&vb);
+	test_str(vb.buf, ==, "1234567890abcd");
+
+	varbuf_add_strn(&vb, "1234567890", 5);
+	varbuf_end_str(&vb);
+	test_str(vb.buf, ==, "1234567890abcd12345");
+
+	varbuf_add_strn(&vb, "abcd", 0);
+	varbuf_end_str(&vb);
+	test_str(vb.buf, ==, "1234567890abcd12345");
+
+	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(172);
+
+	test_varbuf_init();
+	test_varbuf_prealloc();
+	test_varbuf_new();
+	test_varbuf_grow();
+	test_varbuf_trunc();
+	test_varbuf_set();
+	test_varbuf_add_varbuf();
+	test_varbuf_add_buf();
+	test_varbuf_add_str();
+	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. */
+}