+#include <ccan/pushpull/pushpull.h>
+/* Include the C files directly. */
+#include <ccan/pushpull/push.c>
+#include <ccan/pushpull/pull.c>
+#include <ccan/tap/tap.h>
+
+struct foo {
+ uint64_t vu64;
+ uint32_t vu32;
+ uint16_t vu16;
+ uint8_t vu8;
+ unsigned char vuchar;
+ int64_t vs64;
+ int32_t vs32;
+ int16_t vs16;
+ int8_t vs8;
+ char vchar;
+ char bytes[100];
+};
+
+static void *fail_reallocfn(void *ptr, size_t size)
+{
+ return NULL;
+}
+
+static bool push_foo(char **p, size_t *len, const struct foo *foo)
+{
+ return push_u64(p, len, foo->vu64) &&
+ push_u32(p, len, foo->vu32) &&
+ push_u16(p, len, foo->vu16) &&
+ push_u8(p, len, foo->vu8) &&
+ push_uchar(p, len, foo->vuchar) &&
+ push_s64(p, len, foo->vs64) &&
+ push_s32(p, len, foo->vs32) &&
+ push_s16(p, len, foo->vs16) &&
+ push_s8(p, len, foo->vs8) &&
+ push_char(p, len, foo->vchar) &&
+ push_bytes(p, len, foo->bytes, sizeof(foo->bytes));
+}
+
+static bool pull_foo(const char **p, size_t *len, struct foo *foo)
+{
+ int ret;
+
+ ret = pull_u64(p, len, &foo->vu64) +
+ pull_u32(p, len, &foo->vu32) +
+ pull_u16(p, len, &foo->vu16) +
+ pull_u8(p, len, &foo->vu8) +
+ pull_uchar(p, len, &foo->vuchar) +
+ pull_s64(p, len, &foo->vs64) +
+ pull_s32(p, len, &foo->vs32) +
+ pull_s16(p, len, &foo->vs16) +
+ pull_s8(p, len, &foo->vs8) +
+ pull_char(p, len, &foo->vchar) +
+ pull_bytes(p, len, foo->bytes, sizeof(foo->bytes));
+
+ if (ret != 11)
+ ok1(len == 0 && *p == NULL);
+ return ret == 11;
+}
+
+static bool foo_equal(const struct foo *f1, const struct foo *f2)
+{
+ return f1->vu64 == f2->vu64 &&
+ f1->vu32 == f2->vu32 &&
+ f1->vu16 == f2->vu16 &&
+ f1->vu8 == f2->vu8 &&
+ f1->vuchar == f2->vuchar &&
+ f1->vs64 == f2->vs64 &&
+ f1->vs32 == f2->vs32 &&
+ f1->vs16 == f2->vs16 &&
+ f1->vs8 == f2->vs8 &&
+ f1->vchar == f2->vchar &&
+ memcmp(f1->bytes, f2->bytes, sizeof(f1->bytes)) == 0;
+}
+
+int main(void)
+{
+ char *buffer;
+ const char *p;
+ size_t len, left;
+ struct foo *foo, *foo2;
+
+ /* This is how many tests you plan to run */
+ plan_tests(17);
+
+ /* Valgrind will make sure we don't read padding! */
+ foo = malloc(sizeof(*foo));
+ foo->vu64 = 0x01020304050607ULL;
+ foo->vu32 = 0x08090a0b;
+ foo->vu16 = 0x0c0d;
+ foo->vu8 = 0x0e;
+ foo->vuchar = 0x0f;
+ foo->vs64 = -0x1011121314151617LL;
+ foo->vs32 = -0x18191a1b;
+ foo->vs16 = -0x1c1d;
+ foo->vs8 = -0x1e;
+ foo->vchar = -0x1f;
+ memset(foo->bytes, 0x20, sizeof(foo->bytes));
+ strcpy(foo->bytes, "This is a test");
+
+ buffer = malloc(1);
+ len = 0;
+ ok1(push_foo(&buffer, &len, foo));
+ ok1(len <= sizeof(*foo));
+
+ /* Triggers valgrind's uninitialized value warning */
+ ok1(!memchr(buffer, 0x21, len));
+
+ p = buffer;
+ left = len;
+ foo2 = malloc(sizeof(*foo2));
+ ok1(pull_foo(&p, &left, foo2));
+ ok1(left == 0);
+ ok1(p == buffer + len);
+ ok1(foo_equal(foo, foo2));
+
+ /* Too-small for pull, it should fail and set ptr/len to 0 */
+ p = buffer;
+ left = 0;
+ ok1(!pull_u64(&p, &left, &foo2->vu64));
+ ok1(p == NULL && left == 0);
+ /* Shouldn't change field! */
+ ok1(foo_equal(foo, foo2));
+
+ left = 7;
+ ok1(!pull_u64(&p, &left, &foo2->vu64));
+ ok1(p == NULL && left == 0);
+ /* Shouldn't change field! */
+ ok1(foo_equal(foo, foo2));
+
+ /* Discard should work. */
+ left = len;
+ ok1(pull_bytes(&p, &left, NULL, sizeof(foo->bytes)));
+ ok1(left == len - sizeof(foo->bytes));
+
+ /* Push failures should be clean. */
+ push_set_realloc(fail_reallocfn);
+ p = buffer;
+ left = len;
+ ok1(!push_u64(&buffer, &left, foo->vu64));
+ ok1(p == buffer && left == len);
+
+ free(buffer);
+ free(foo);
+ free(foo2);
+
+ /* This exits depending on whether all tests passed */
+ return exit_status();
+}