[esnacc-dev] [PATCH 1/7] test-lib: Add expbuf regressions

[Aaron Conole]

A year ago, @Josie-H reported issues with the expbuf get/put routines.

This adds a test to the build to detect the c-library issues reported and
confirms the existence of the bugs reported.

Signed-off-by: Aaron Conole <aconole at bytheb.org>
Reported-by: @Josie-H
---
 c-examples/test-lib/test-lib.c | 58 +++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 57 insertions(+), 1 deletion(-)

diff --git a/c-examples/test-lib/test-lib.c b/c-examples/test-lib/test-lib.c
index 22c3f64..bf880aa 100644
--- a/c-examples/test-lib/test-lib.c
+++ b/c-examples/test-lib/test-lib.c
@@ -35,13 +35,24 @@
  *
  */
 
+#ifdef DEBUG
+#undef DEBUG
+#define DEBUG 1
+#endif
+
+#ifdef NDEBUG
+#undef NDEBUG
+#endif
+
 #include <stdio.h>
+#include <assert.h>
 #ifdef WIN32
 #include "windows.h"
 #include "float.h"
 #endif
 #include "asn-incl.h"
 #include "sbuf.h"
+#include "exp-buf.h"
 
 int TestAsnBuffers();
 int TestAsnTag();
@@ -56,6 +67,50 @@ int TestAsnList();
 
 int bufSize = 256;
 
+static void
+test_ExpBuf_Issue9() {
+    ExpBuf *eb = ExpBufAllocBufAndData();
+    unsigned long dbs = ExpBufDataBlkSize(eb);
+    unsigned long i;
+
+    ExpBufResetInWriteRvsMode(eb);
+    fprintf(stderr, "PTR: %p\n", eb);
+    for (i = 0; i < dbs; ++i) {
+        ExpBufPutByteRvs(&eb, 'a');
+    }
+    fprintf(stderr, "PTR: %p\n", eb);
+    ExpBufResetInReadMode(&eb);
+    fprintf(stderr, "PTR: %p\n", eb);
+    for (i = 0; i < 4; ++i) {
+        unsigned char c = ExpBufGetByte(&eb);
+        if (c != 'a') {
+            fprintf(stderr, "ERROR: Bad decode %d:0x%x...\n", i, (int)c);
+            fprintf(stderr, "       ReadError: %d\n", eb->readError);
+            fprintf(stderr, "       WriteError: %d\n", eb->writeError);
+            assert(0);
+        }
+    }
+
+    ExpBufResetInWriteRvsMode(eb);
+    for (i = 0; i < dbs+4; ++i) {
+        ExpBufPutByteRvs(&eb, 'b');
+    }
+
+    ExpBufResetInReadMode(&eb);
+    for (i = 0; i < 4; ++i) {
+        unsigned char c = ExpBufGetByte(&eb);
+        if (c != 'b') {
+            fprintf(stderr, "ERROR: BAD decode after encode..\n");
+            assert(0);
+        }
+    }
+
+    ExpBufResetInWriteRvsMode(eb);
+    for (i = 0; i < dbs; ++i) {
+        ExpBufPutByteRvs(&eb, 'c');
+    }
+}
+
 int
 main()
 {
@@ -126,7 +181,8 @@ main()
         isErr = TRUE;
     }
 
-
+    ExpBufInit(1024);
+    test_ExpBuf_Issue9();
 
     if (isErr)
     {
-- 
2.7.4