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tests/sprintf: add tests for managarm/frigg#7

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This commit is contained in:
Matt Taylor 2021-04-16 14:19:41 +01:00
parent 8207f4e7e1
commit b5da31997e
1 changed files with 50 additions and 2 deletions
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52
tests/ansi/sprintf.c
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@ -1,5 +1,6 @@
#include <stdio.h>
#include <assert.h>
#include <math.h>
int main() {
char buf[11];
@ -7,7 +8,8 @@ int main() {
assert(buf[0] == '1' && buf[1] == '2' && buf[2] == '\0');
sprintf(buf, "%f", 3.14);
assert(buf[0] == '3' && buf[1] == '.' && buf[2] == '1'
&& buf[3] == '4' && buf[4] == '\0');
&& buf[3] == '4' && buf[4] == '0' && buf[5] == '0'
&& buf[6] == '0' && buf[7] == '0' && buf[8] == '\0');
// Test %c right padding.
sprintf(buf, "%-2c", 'a');
@ -31,6 +33,9 @@ int main() {
sprintf(buf, "%-3.2d", 123);
assert(buf[0] == '1' && buf[1] == '2' && buf[2] == '3'
&& buf[3] == '\0');
sprintf(buf, "%-3.2u", 12);
assert(buf[0] == '1' && buf[1] == '2' && buf[2] == ' '
&& buf[3] == '\0');
// Test %d left padding.
sprintf(buf, "%2d", 1);
@ -44,7 +49,49 @@ int main() {
sprintf(buf, "%3.2d", 123);
assert(buf[0] == '1' && buf[1] == '2' && buf[2] == '3'
&& buf[3] == '\0');
sprintf(buf, "%3.2u", 12);
assert(buf[0] == ' ' && buf[1] == '1' && buf[2] == '2'
&& buf[3] == '\0');
// Test %f padding.
// TODO: Test printing of huge numbers (larger than 2^64)
sprintf(buf, "%2.f", 1.2);
assert(buf[0] == ' ' && buf[1] == '1' && buf[2] == '\0');
sprintf(buf, "%2.f", 12.3);
assert(buf[0] == '1' && buf[1] == '2' && buf[2] == '\0');
sprintf(buf, "%5.2f", 1.0);
assert(buf[0] == ' ' && buf[1] == '1' && buf[2] == '.' && buf[3] == '0'
&& buf[4] == '0' && buf[5] == '\0');
sprintf(buf, "%.1f", -4.0);
assert(buf[0] == '-' && buf[1] == '4' && buf[2] == '.' && buf[3] == '0'
&& buf[4] == '\0');
sprintf(buf, "%-3.f", 8.0);
assert(buf[0] == '8' && buf[1] == ' ' && buf[2] == ' ' && buf[4] == '\0');
sprintf(buf, "%4f", INFINITY);
assert((buf[0] == ' ' || buf[0] == 'i') && (buf[1] == 'i' || buf[2] == 'n'));
sprintf(buf, "%4f", NAN);
assert(buf[0] == ' ' && buf[1] == 'n' && buf[2] == 'a' && buf[3] == 'n' && buf[4] == '\0');
sprintf(buf, "%4F", INFINITY);
assert((buf[0] == ' ' || buf[0] == 'I') && (buf[1] == 'I' || buf[2] == 'N'));
sprintf(buf, "%4F", NAN);
assert(buf[0] == ' ' && buf[1] == 'N' && buf[2] == 'A' && buf[3] == 'N' && buf[4] == '\0');
// TODO: We don't yet round properly
// sprintf(buf, "%5.2f", 1.2);
// assert(buf[0] == ' ' && buf[1] == '1' && buf[2] == '.' && buf[3] == '2'
// && buf[4] == '0' && buf[5] == '\0');
// sprintf(buf, "%5.2f", 1.23);
// assert(buf[0] == ' ' && buf[1] == '1' && buf[2] == '.' && buf[3] == '2'
// && buf[4] == '3' && buf[5] == '\0');
// sprintf(buf, "%5.2f", 1.234);
// assert(buf[0] == ' ' && buf[1] == '1' && buf[2] == '.' && buf[3] == '2'
// && buf[4] == '3' && buf[5] == '\0');
// sprintf(buf, "%5.2f", 12.345);
// assert(buf[0] == '1' && buf[1] == '2' && buf[2] == '.' && buf[3] == '3'
// && buf[4] == '5' && buf[5] == '\0');
// sprintf(buf, "%-5.2f", 1.2);
// assert(buf[0] == '1' && buf[1] == '.' && buf[2] == '2' && buf[3] == '0'
// && buf[4] == ' ' && buf[5] == '\0');
// Test '+' and ' ' flags - mlibc issue #229.
sprintf(buf, "%+d", 12);
assert(buf[0] == '+' && buf[1] == '1' && buf[2] == '2' && buf[3] == '\0');
@ -77,5 +124,6 @@ int main() {
assert(buf[0] == '0' && buf[1] == '\0');
sprintf(buf, "%#o", 0);
assert(buf[0] == '0' && buf[1] == '\0');
return 0;
}