Add IO type checking functions, add ReadLine

test/include/BH/Unit.h

@@ -2,10 +2,13 @@
 #define BH_UNIT_H
 
 #include <stdio.h>
+#include <string.h>
 #include <math.h>
 
+
 typedef int (*BH_UnitCallback)(void);
 
+
 #define BH_VERIFY(e) \
     do { \
         if (!(e)) { \
@@ -35,6 +38,17 @@ typedef int (*BH_UnitCallback)(void);
     } while(0)
 
 
+#define BH_VERIFY_STR_EQ(actual, expected) \
+    do { \
+        BH_VERIFY((actual) != NULL && (expected) != NULL); \
+        if (strcmp((actual), (expected)) != 0) { \
+            printf("%s:%d\tExpected '%s', got '%s'\n", \
+                   __FILE__, __LINE__, (expected), (actual)); \
+            return -1; \
+        } \
+    } while(0)
+
+
 #define BH_UNIT_TEST(name) \
     static int unit##name(void)