X-Git-Url: https://git.ozlabs.org/?p=ccan;a=blobdiff_plain;f=ccan%2Fcrcsync%2Ftest%2Frun-crc.c;fp=ccan%2Fcrcsync%2Ftest%2Frun-crc.c;h=0325cce045ec46e6af1a3652fad7b8d0d619f955;hp=0000000000000000000000000000000000000000;hb=94ff9fc87d90173145772a41f79987988f9f0972;hpb=c6a86ac78efbec284b444876a9ea2fbbf7e48033

diff --git a/ccan/crcsync/test/run-crc.c b/ccan/crcsync/test/run-crc.c
new file mode 100644
index 00000000..0325cce0
--- /dev/null
+++ b/ccan/crcsync/test/run-crc.c
@@ -0,0 +1,36 @@
+#include "crcsync/crcsync.h"
+#include "crcsync/crcsync.c"
+#include "tap/tap.h"
+
+int main(int argc, char *argv[])
+{
+	char buffer[1024];
+	unsigned int i, j;
+	uint32_t crcs[12] = { 0xFFFFF, 0xdeadf00d };
+
+	plan_tests(3 + 8192);
+
+	/* Simple test (we know currently crc of 0s is 0) */
+	memset(buffer, 0, sizeof(buffer));
+	crc_of_blocks(buffer, sizeof(buffer), sizeof(buffer), 32, crcs);
+	ok1(crcs[0] == 0);
+	crc_of_blocks(buffer, sizeof(buffer), sizeof(buffer)/2, 32, crcs);
+	ok1(crcs[0] == 0);
+	ok1(crcs[1] == 0);
+
+	/* We know they're using crc32c. */
+	for (i = 0; i < sizeof(buffer); i++) {
+		buffer[i] = i;
+		crc_of_blocks(buffer, sizeof(buffer), sizeof(buffer)/7,
+			      32, crcs);
+		for (j = 0; j < sizeof(buffer); j += sizeof(buffer)/7) {
+			unsigned int len = sizeof(buffer)/7;
+			if (j + len > sizeof(buffer))
+				len = sizeof(buffer) - j;
+			
+			ok1(crc32c(0, buffer + j, len) == crcs[j/(sizeof(buffer)/7)]);
+		}
+	}
+
+	return exit_status();
+}