introduce the unit tests file

Makefile

@@ -13,6 +13,7 @@ all: vger
 
 clean:
 	find . \( -name vger -o \
+		  -name unit_test -o \
 		  -name "*.o" -o \
 		  -name "*.core" \) \
 		  -delete
@@ -24,5 +25,9 @@ install: vger
 	install -o root -g wheel vger ${PREFIX}/bin/
 	install -o root -g wheel vger.8 ${PREFIX}/man/man8/
 
-test: vger
+unit_test: tests.c vger.o
+	${CC} ${CFLAGS} -o $@ vger.o tests.c mimes.o utils.o
+
+test: vger unit_test
+	./unit_test
 	cd tests && sh test.sh

tests.c

@@ -0,0 +1,50 @@
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include "vger.h"
+
+// to test
+void 		test_status(void);
+void 		test_status_error(void);
+void		test_uridecode(char*, const int);
+
+
+void
+test_uridecode(char *str, const int result)
+{
+    char reference[GEMINI_REQUEST_MAX] = {'\0'};
+    strlcpy(reference, str, sizeof(reference));
+    uridecode(str);
+    if (strncmp(reference, str, strlen(str)) != result)
+    {
+	printf("uridecode error\n");
+	printf("Strings should be %s\n", (result == 0) ? "identical" : "different");
+	printf("passed   %s\n", reference);
+	printf("got      %s\n", str);
+	exit(1);
+    }
+}
+
+void
+test_status(void)
+{
+	status(20, "text/gemini");
+}
+
+void
+test_status_error(void)
+{
+	status_error(51, "file not found");
+	status_error(50, "Forbidden path");
+	status_error(50, "Internal server error");
+}
+
+int
+main(void)
+{
+	test_status_error();
+	test_status();
+	//test_uridecode("host.name", 0);
+	//test_uridecode("host.name/percent%25-encode%3.gmi", 1);
+	return(0);
+}