Testcode for strtol and atoi.

git-svn-id: svn://svn.cc65.org/cc65/trunk@4176 b7a2c559-68d2-44c3-8de9-860c34a00d81

testcode/lib/atoi-test.c

@@ -0,0 +1,45 @@
+/* A small test for atoi. Assumes twos complement */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+#include <errno.h>
+
+
+
+#define outfile stderr
+
+
+
+static unsigned int Failures = 0;
+
+
+
+static void CheckAtoi (const char* Str, int Val)
+{
+    int Res = atoi (Str);
+    if (Res != Val) {
+        fprintf (outfile, "atoi error in \"%s\":\n"
+                          "  result = %d, should be %d\n", Str, Res, Val);
+        ++Failures;
+    }
+}
+
+
+
+int main (void)
+{
+    CheckAtoi ("\t +0A", 0);
+    CheckAtoi ("\t -0.123", 0);
+    CheckAtoi ("  -32  ", -32);
+    CheckAtoi (" +32  ", 32);
+    CheckAtoi ("0377", 377);
+    CheckAtoi (" 0377 ", 377);
+    CheckAtoi (" +0377 ", 377);
+    CheckAtoi (" -0377 ", -377);
+    CheckAtoi ("0x7FFF", 0);
+    CheckAtoi (" +0x7FFF", 0);
+    CheckAtoi (" -0x7FFF", 0);
+    fprintf (outfile, "Failures: %u\n", Failures);
+    return (Failures != 0);
+}

testcode/lib/strtol-test.c

@@ -0,0 +1,145 @@
+/* A small test for atoi/strtol. 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 CheckStrToL (const char* Str, int Base, long Val, unsigned char Ok)
+{
+    char* EndPtr;
+    long Res = strtol (Str, &EndPtr, Base);
+    if (Ok) {
+        if (Res != Val) {
+            fprintf (outfile,
+                     "strtol error in \"%s\":\n"
+                     "  result = %ld, should be %ld, 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 = %ld, should be %ld, chars = %d\n",
+                     Str, Res, Val, EndPtr - Str);
+            ++Failures;
+        }
+    }
+}
+
+
+
+int main (void)
+{
+    char Buf[80];
+
+    /* Prefixed allowed if base = 0 */
+    CheckStrToL ("\t 0x10G ", 0, 16L, OK);
+    CheckStrToL ("\t 0X10G ", 0, 16L, OK);
+    CheckStrToL (" \t0377\t", 0, 255L, OK);
+    CheckStrToL (" 377", 0, 377L, OK);
+
+    CheckStrToL ("\t -0x10G ", 0, -16L, OK);
+    CheckStrToL ("\t -0X10G ", 0, -16L, OK);
+    CheckStrToL (" \t-0377\t", 0, -255L, OK);
+    CheckStrToL (" -377", 0, -377L, OK);
+
+    /* No prefixes if base = 10 */
+    CheckStrToL ("\t 1234 ", 10, 1234L, OK);
+    CheckStrToL ("\t -1234 ", 10, -1234L, OK);
+    CheckStrToL ("\t -0x10G ", 10, 0L, OK);
+    CheckStrToL ("\t -0X10G ", 10, 0L, OK);
+    CheckStrToL (" \t-0377\t", 10, -377L, OK);
+    CheckStrToL (" 0377", 10, 377L, OK);
+
+    /* 0x prefix is allowed if base = 16 */
+    CheckStrToL ("\t 0x1234 ", 16, 0x1234L, OK);
+    CheckStrToL ("\t -0x1234 ", 16, -0x1234L, OK);
+    CheckStrToL ("\t -010G ", 16, -16L, OK);
+    CheckStrToL ("\t 10G ", 16, 16L, OK);
+
+    /* Check LONG_MIN and LONG_MAX */
+    sprintf (Buf, "%ld", LONG_MIN);
+    CheckStrToL (Buf, 0, LONG_MIN, OK);
+    sprintf (Buf, "%ld", LONG_MAX);
+    CheckStrToL (Buf, 0, LONG_MAX, OK);
+
+    /* Check value one smaller */
+    sprintf (Buf+1, "%ld", LONG_MIN);
+    Buf[1] = '0';       /* Overwrite '-' */
+    IncStr (Buf+1);
+    if (Buf[1] == '0') {
+        Buf[1] = '-';
+        Buf[0] = ' ';
+    } else {
+        Buf[0] = '-';
+    }
+    CheckStrToL (Buf, 0, LONG_MIN, ERROR);
+
+    /* Check value one larger */
+    sprintf (Buf+1, "%ld", LONG_MAX);
+    Buf[0] = '0';
+    IncStr (Buf);
+    if (Buf[0] == '0') {
+        Buf[0] = ' ';
+    }
+    CheckStrToL (Buf, 0, LONG_MAX, ERROR);
+
+    /* Check numbers that are much too large or small */
+    CheckStrToL ("-999999999999999999999999999999999999999999999999999999999", 0, LONG_MIN, ERROR);
+    CheckStrToL ("+999999999999999999999999999999999999999999999999999999999", 0, LONG_MAX, ERROR);
+    CheckStrToL (" 999999999999999999999999999999999999999999999999999999999", 0, LONG_MAX, ERROR);
+
+    /* Check a few other bases */
+    CheckStrToL ("aBcD", 36, 481261L, OK);
+    CheckStrToL ("zyaB", 35, 0L, ERROR);
+    CheckStrToL ("zyaB", 36, 1677395L, ERROR);
+
+    fprintf (outfile, "Failures: %u\n", Failures);
+    return (Failures != 0);
+}