Start moving the tests into subfolders. Transition to SCons for build system for the tests.

Only a few tests updated so far. Have to include all the rest before merging to mainline.

Update issue 63
Status: Started

tests/extensions/decode_extensions.c

@@ -0,0 +1,43 @@
+/* Test decoding of extension fields. */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <pb_decode.h>
+#include "alltypes.pb.h"
+#include "extensions.pb.h"
+
+#define TEST(x) if (!(x)) { \
+    printf("Test " #x " failed.\n"); \
+    return 2; \
+    }
+
+int main(int argc, char **argv)
+{
+    uint8_t buffer[1024];
+    size_t count = fread(buffer, 1, sizeof(buffer), stdin);
+    pb_istream_t stream = pb_istream_from_buffer(buffer, count);
+    
+    AllTypes alltypes = {};
+    
+    int32_t extensionfield1;
+    pb_extension_t ext1 = {&AllTypes_extensionfield1, &extensionfield1, NULL};
+    alltypes.extensions = &ext1;
+        
+    ExtensionMessage extensionfield2 = {};
+    pb_extension_t ext2 = {&ExtensionMessage_AllTypes_extensionfield2, &extensionfield2, NULL};
+    ext1.next = &ext2;
+    
+    if (!pb_decode(&stream, AllTypes_fields, &alltypes))
+    {
+        printf("Parsing failed: %s\n", PB_GET_ERROR(&stream));
+        return 1;
+    }
+
+    TEST(extensionfield1 == 12345)
+    TEST(strcmp(extensionfield2.test1, "test") == 0)
+    TEST(extensionfield2.test2 == 54321)
+    
+    return 0;
+}
+