Added a test for strtoul().

git-svn-id: svn://svn.cc65.org/cc65/trunk@4220 b7a2c559-68d2-44c3-8de9-860c34a00d81

testcode/lib/strtoul-test.c

@@ -0,0 +1,132 @@
+/* A small test for strtuol. Assumes twos complement */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+#include <errno.h>
+
+
+
+#define outfile stderr
+
+
+
+#define ERROR   0
+#define OK      1
+
+
+
+static unsigned int Failures = 0;
+
+
+
+static void IncStr (char* Buf)
+/* Increment a number represented as a string by one. The string MUST not
+ * start with a '9', we cannot handle overflow in this case.
+ */
+{
+    int Len = strlen (Buf);
+
+    while (--Len >= 0) {
+        switch (Buf[Len]) {
+            case '9':
+                Buf[Len] = '0';
+                break;
+
+            default:
+                ++(Buf[Len]);
+                return;
+        }
+    }
+}
+
+
+
+static void CheckStrToUL (const char* Str, int Base, unsigned long Val, unsigned char Ok)
+{
+    char* EndPtr;
+    unsigned long Res = strtoul (Str, &EndPtr, Base);
+    if (Ok) {
+        if (Res != Val) {
+            fprintf (outfile,
+                     "strtol error in \"%s\":\n"
+                     "  result = %lu, should be %lu, chars = %d\n",
+                     Str, Res, Val, EndPtr - Str);
+            ++Failures;
+        }
+    } else {
+        if (errno != ERANGE) {
+            fprintf (outfile,
+                     "strtol error in \"%s\":\n"
+                     "  should not convert, but errno = %d\n",
+                     Str, errno);
+            ++Failures;
+        }
+        if (Res != Val) {
+            fprintf (outfile,
+                     "strtol error in \"%s\":\n"
+                     "  result = %lu, should be %lu, chars = %d\n",
+                     Str, Res, Val, EndPtr - Str);
+            ++Failures;
+        }
+    }
+}
+
+
+
+int main (void)
+{
+    char Buf[80];
+
+    /* Prefixed allowed if base = 0 */
+    CheckStrToUL ("\t 0x10G ", 0, 16UL, OK);
+    CheckStrToUL ("\t 0X10G ", 0, 16UL, OK);
+    CheckStrToUL (" \t0377\t", 0, 255UL, OK);
+    CheckStrToUL (" 377", 0, 377UL, OK);
+
+    CheckStrToUL ("\t -0x10G ", 0, (unsigned long) -16L, OK);
+    CheckStrToUL ("\t -0X10G ", 0, (unsigned long) -16L, OK);
+    CheckStrToUL (" \t-0377\t", 0, (unsigned long) -255L, OK);
+    CheckStrToUL (" -377", 0, (unsigned long) -377L, OK);
+
+    /* No prefixes if base = 10 */
+    CheckStrToUL ("\t 1234 ", 10, 1234UL, OK);
+    CheckStrToUL ("\t -1234 ", 10, (unsigned long) -1234L, OK);
+    CheckStrToUL ("\t -0x10G ", 10, 0UL, OK);
+    CheckStrToUL ("\t -0X10G ", 10, 0UL, OK);
+    CheckStrToUL (" \t-0377\t", 10, (unsigned long) -377L, OK);
+    CheckStrToUL (" 0377", 10, 377UL, OK);
+
+    /* 0x prefix is allowed if base = 16 */
+    CheckStrToUL ("\t 0x1234 ", 16, 0x1234UL, OK);
+    CheckStrToUL ("\t -0x1234 ", 16, (unsigned long) -0x1234L, OK);
+    CheckStrToUL ("\t -010G ", 16, (unsigned long) -16L, OK);
+    CheckStrToUL ("\t 10G ", 16, 16UL, OK);
+
+    /* Check ULONG_MAX */
+    sprintf (Buf, "%lu", ULONG_MAX);
+    CheckStrToUL (Buf, 0, ULONG_MAX, OK);
+
+    /* Check value one larger */
+    sprintf (Buf+1, "%lu", ULONG_MAX);
+    Buf[0] = '0';
+    IncStr (Buf);
+    if (Buf[0] == '0') {
+        Buf[0] = ' ';
+    }
+    CheckStrToUL (Buf, 0, ULONG_MAX, ERROR);
+
+    /* Check numbers that are much too large or small */
+    CheckStrToUL ("-999999999999999999999999999999999999999999999999999999999", 0, ULONG_MAX, ERROR);
+    CheckStrToUL ("+999999999999999999999999999999999999999999999999999999999", 0, ULONG_MAX, ERROR);
+    CheckStrToUL (" 999999999999999999999999999999999999999999999999999999999", 0, ULONG_MAX, ERROR);
+
+    /* Check a few other bases */
+    CheckStrToUL ("aBcD", 36, 481261UL, OK);
+    CheckStrToUL ("zyaB", 35, 0UL, ERROR);
+    CheckStrToUL ("zyaB", 36, 1677395UL, ERROR);
+
+    fprintf (outfile, "Failures: %u\n", Failures);
+    return (Failures != 0);
+}
+