Added a rudimentary test framework

Tests can be found in 'tests/test_blah.sh'
Tests can be run with 'make test'

tests/template.fmt

@@ -0,0 +1,45 @@
+/// AUTOGENERATED TEST ///
+#include "lfs.h"
+#include "emubd/lfs_emubd.h"
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+// test stuff
+void test_log(const char *s, uintmax_t v) {{
+    printf("%s: %jd\n", s, v);
+}}
+
+void test_assert(const char *s, uintmax_t v, uintmax_t e) {{
+    test_log(s, v);
+    if (v != e) {{
+        printf("\033[31massert %s failed, expected %jd\033[0m\n", s, e);
+        exit(-2);
+    }}
+}}
+
+// lfs declarations
+lfs_t lfs;
+lfs_emubd_t bd;
+lfs_file_t file[4];
+lfs_dir_t dir[4];
+struct lfs_bd_info info;
+struct lfs_bd_stats stats;
+
+uint8_t buffer[1024];
+uint8_t wbuffer[1024];
+uint8_t rbuffer[1024];
+lfs_size_t size;
+lfs_size_t wsize;
+lfs_size_t rsize;
+
+uintmax_t res;
+
+
+int main() {{
+    lfs_emubd_create(&bd, "blocks");
+
+{tests}
+
+    lfs_emubd_destroy(&bd);
+}}