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int g_passed = 0;
int g_failed = 0;
int getc() {
char c;
int n = syscall(0, 0, &c, 1);
if (n <= 0) return -1;
return (int)c;
}
int write_char(int c) {
char b;
b = (char)c;
syscall(1, 1, &b, 1);
return 1;
}
int write_str(char *s) {
int n = 0;
while (s[n] != 0) n++;
syscall(1, 1, s, n);
return n;
}
int write_int(int n) {
char tmp[24];
int len = 0;
int neg = n < 0;
if (neg) { write_char('-'); n = -n; }
if (n == 0) { write_char('0'); return 1; }
while (n > 0) { tmp[len] = (char)('0' + n % 10); n = n / 10; len++; }
int i = len - 1;
while (i >= 0) { write_char(tmp[i]); i--; }
return neg + len;
}
int check(char *name, int got, int want) {
if (got == want) {
write_str("PASS "); write_str(name); write_char('\n');
g_passed++;
return 1;
}
write_str("FAIL "); write_str(name);
write_str(": got "); write_int(got);
write_str(" want "); write_int(want);
write_char('\n');
g_failed++;
return 0;
}
int read_line(char *buf, int cap) {
int i = 0;
int c;
while (i < cap - 1) {
c = getc();
if (c == -1 || c == '\n') break;
buf[i] = (char)c;
i++;
}
buf[i] = 0;
return i;
}
int test1() {
int c = getc();
int result = c;
while (c != '\n' && c != -1) c = getc();
return check("single_char_is_65", result, 65);
}
int test2() {
char buf[64];
int n = read_line(buf, 64);
write_str(buf); write_char('\n');
return check("readline_length", n, 5);
}
int test3() {
int newlines = 0;
int c;
while (newlines < 2) {
c = getc();
if (c == -1) break;
if (c == '\n') newlines++;
}
return check("count_lines", newlines, 2);
}
int test4() {
int value = 0;
int c;
while (1) {
c = getc();
if (c < '0' || c > '9') break;
value = value * 10 + (c - '0');
}
return check("parse_int", value, 42);
}
int test5() {
char buf[64];
int n = read_line(buf, 64);
int i = 0;
while (i < n) {
char ch = buf[i];
if (ch >= 'a' && ch <= 'z') buf[i] = ch - 'a' + 'A';
i++;
}
write_str(buf); write_char('\n');
return check("toupper_length", n, 5);
}
int test6() {
int c = getc();
return check("eof_is_minus1", c, -1);
}
int main() {
test1();
test2();
test3();
test4();
test5();
test6();
write_char('\n');
write_int(g_passed); write_str(" passed, ");
write_int(g_failed); write_str(" failed\n");
return g_failed == 0 ? 0 : 1;
}
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