From: Steinar H. Gunderson <sesse@debian.org>
Date: Sat, 3 Jan 2009 01:19:56 +0000 (+0100)
Subject: Add a bytesource test for broken markers.
X-Git-Url: https://git.sesse.net/?p=fjl;a=commitdiff_plain;h=56ceb8f3300b0ee121bddf572f935f87feedfea8

Add a bytesource test for broken markers.
---

diff --git a/bytesource_test.c b/bytesource_test.c
index 79c242a..4dc7661 100644
--- a/bytesource_test.c
+++ b/bytesource_test.c
@@ -31,7 +31,7 @@ ssize_t custom_read_slow(void* userdata, uint8_t* buf, size_t count)
 }
 
 // Two streams, separated by a marker.
-uint8_t bytes[] = {
+uint8_t stream_bytes[] = {
 	0x01, 0x02, 0x03, 0xff, 0x00, 0x04,	// some bytes
 	0xff, 0xf7,				// a marker
 	0x05, 0x06, 0x07, 0x08, 0xff, 0x00      // more bytes
@@ -49,8 +49,8 @@ uint8_t second_stream[] = {
 void test_basic_reading()
 {
 	struct custom_read_userdata ud;
-	ud.bytes = bytes;
-	ud.bytes_left = sizeof(bytes);
+	ud.bytes = stream_bytes;
+	ud.bytes_left = sizeof(stream_bytes);
 
 	struct byte_source source;
 	init_byte_source(&source, custom_read, &ud);
@@ -84,8 +84,8 @@ void test_basic_reading()
 void test_slow_source()
 {
 	struct custom_read_userdata ud;
-	ud.bytes = bytes;
-	ud.bytes_left = sizeof(bytes);
+	ud.bytes = stream_bytes;
+	ud.bytes_left = sizeof(stream_bytes);
 
 	struct byte_source source;
 	init_byte_source(&source, custom_read_slow, &ud);
@@ -123,6 +123,31 @@ void test_slow_source()
 	assert(ret == 0);
 }
 
+// Data with a truncated marker should first give the first bytes, then failure
+// on next read since the stream EOFs.
+void test_broken_marker()
+{
+	uint8_t bytes[] = { 0x01, 0x02, 0x03, 0x04, 0xff };
+	uint8_t expected_bytes[] = { 0x01, 0x02, 0x03, 0x04 };
+
+	struct custom_read_userdata ud;
+	ud.bytes = bytes;
+	ud.bytes_left = sizeof(bytes);
+
+	struct byte_source source;
+	init_byte_source(&source, custom_read, &ud);
+	
+	uint8_t buf[4096];
+	ssize_t ret;
+
+	ret = byte_source_input_func(&source, buf, 4096);
+	assert(ret == sizeof(expected_bytes));
+	assert(memcmp(buf, expected_bytes, sizeof(expected_bytes)) == 0);
+
+	ret = byte_source_input_func(&source, buf, 4096);
+	assert(ret == -1);
+}
+
 int main(void)
 {
 	init_choices();
@@ -133,6 +158,9 @@ int main(void)
 	printf("test_slow_source()\n");
 	test_slow_source();
 	
+	printf("test_broken_marker()\n");
+	test_broken_marker();
+	
 	printf("All tests pass.\n");
 	return 0;
 }