use strict;
use warnings;
use Math::MPFR qw(:mpfr);

my $tests = 8;

# Because of the way I (sisyphus) build this module with MS
# Visual Studio, XSubs that take a filehandle as an argument
# may not work. It therefore suits my purposes to be able to
# avoid calling (and testing) those particular XSubs
$tests = 1 if $ENV{SISYPHUS_SKIP};

print "1..$tests\n";

if($tests == 1) {
  warn "\nskipping all tests - \$ENV{SISYPHUS_SKIP} is set\n";
  print "ok 1\n";
  exit 0;
}

print  "# Using Math::MPFR version ", $Math::MPFR::VERSION, "\n";
print  "# Using mpfr library version ", MPFR_VERSION_STRING, "\n";
print  "# Using gmp library version ", Math::MPFR::gmp_v(), "\n";

Rmpfr_set_default_prec(64);

my($WR1, $WR2, $WR3, $WR4, $WR5, $WR6, $WR7, $WR8);
my($RD1, $RD2, $RD3, $RD4, $RD5, $RD6, $RD7, $RD8);
my($ret, $ok, $mpfr, $count, $prefix, $suffix);

$mpfr = Math::MPFR->new(17);
open($WR1, '>', 'out1.txt') or die "Can't open WR1: $!";
open($WR2, '>', 'out2.txt') or die "Can't open WR2: $!";
open($WR3, '>', 'out3.txt') or die "Can't open WR3: $!";
open($WR4, '>', 'out4.txt') or die "Can't open WR4: $!";
open($WR5, '>', 'out5.txt') or die "Can't open WR5: $!";
open($WR6, '>', 'out6.txt') or die "Can't open WR6: $!";
open($WR7, '>', 'out7.txt') or die "Can't open WR7: $!";

$prefix = "This is the prefix ";
$suffix = " and this is the suffix\n";

# No prefix, no suffix - the five numbers will all be
# strung together on the one line.
for(1..5) {
   $ret = TRmpfr_out_str(\*$WR1, 10, 0, $mpfr, GMP_RNDN);
   print $WR7 "From the first loop\n";
}

# Prefix, but no suffix - again, the output will be
# strung together on the one line.
for(1..5) {
   $ret = TRmpfr_out_str($prefix, \*$WR2, 10, 0, $mpfr, GMP_RNDN);
   print $WR7 "From the second loop";
}

# Suffix, but no prefix - this file will contain 5 lines.
for(1..5) {
   $ret = TRmpfr_out_str(\*$WR3, 10, 0, $mpfr, GMP_RNDN, $suffix);
   print $WR7 "\nFrom the third loop";
}

print $WR7 "\n";

# Both prefix and suffix - this file will contain 5 lines.
for(1..5) {
   $ret = TRmpfr_out_str($prefix, \*$WR4, 10, 0, $mpfr, GMP_RNDN, $suffix);
   print $WR7 "From the fourth loop\n";
}

$prefix .= "\n";

# Prefix, but no suffix - this file will contain 6 lines.
for(1..5) {
   $ret = TRmpfr_out_str($prefix, \*$WR5, 10, 0, $mpfr, GMP_RNDN);
   print $WR7 "From the fifth loop";
}

# Both prefix and suffix - this file will contain 10 lines -
# the prefix appearing on one line, the number and the suffix
# appearing on the next.
for(1..5) {
   $ret = TRmpfr_out_str($prefix, \*$WR6, 10, 0, $mpfr, GMP_RNDN, $suffix);
   print $WR7 "From the sixth loop";
}

close $WR1 or die "Can't close WR1: $!";
close $WR2 or die "Can't close WR2: $!";
close $WR3 or die "Can't close WR3: $!";
close $WR4 or die "Can't close WR4: $!";
close $WR5 or die "Can't close WR5: $!";
close $WR6 or die "Can't close WR6: $!";
close $WR7 or die "Can't close WR7: $!";

open($RD1, '<', 'out1.txt') or die "Can't open RD1: $!";
open($RD2, '<', 'out2.txt') or die "Can't open RD2: $!";
open($RD3, '<', 'out3.txt') or die "Can't open RD3: $!";
open($RD4, '<', 'out4.txt') or die "Can't open RD4: $!";
open($RD5, '<', 'out5.txt') or die "Can't open RD5: $!";
open($RD6, '<', 'out6.txt') or die "Can't open RD6: $!";
open($RD7, '<', 'out7.txt') or die "Can't open RD7: $!";

$ok = 1;
$count = 0;

while(<$RD1>) {
     $count = $.;
     chomp;
     unless($_ eq '1.70000000000000000000e1'x5) {$ok = 0}
}

if($ok && $count == 1) {print "ok 1\n"}
else {
  warn "\n\$ok: $ok\n\$count: $count\n";
  print "not ok 1\n";
}

$ok = 1;
$count = 0;

while(<$RD2>) {
     $count = $.;
     chomp;
     unless($_ eq 'This is the prefix 1.70000000000000000000e1'x5) {$ok = 0}
}

if($ok && $count == 1) {print "ok 2\n"}
else {
  warn "\n\$ok: $ok\n\$count: $count\n";
  print "not ok 2\n";
}

$ok = 1;
$count = 0;

while(<$RD3>) {
     $count = $.;
     chomp;
     unless($_ eq '1.70000000000000000000e1 and this is the suffix') {$ok = 0}
}

if($ok && $count == 5) {print "ok 3\n"}
else {
  warn "\n\$ok: $ok\n\$count: $count\n";
  print "not ok 3\n";
}

$ok = 1;
$count = 0;

while(<$RD4>) {
     $count = $.;
     chomp;
     unless($_ eq 'This is the prefix 1.70000000000000000000e1 and this is the suffix') {$ok = 0}
}

if($ok && $count == 5) {print "ok 4\n"}
else {
  warn "\n\$ok: $ok\n\$count: $count\n";
  print "not ok 4\n";
}

$ok = 1;
$count = 0;

while(<$RD5>) {
     $count = $.;
     chomp;
     if($. == 1) {
       unless($_ eq 'This is the prefix ') {$ok = 0}
     }
     elsif($. == 6) {
       unless($_ eq '1.70000000000000000000e1') {$ok = 0}
     }
     else {
       unless($_ eq '1.70000000000000000000e1This is the prefix ') {$ok = 0}
     }
}

if($ok && $count == 6) {print "ok 5\n"}
else {
  warn "\n\$ok: $ok\n\$count: $count\n";
  print "not ok 5\n";
}

$ok = 1;
$count = 0;

while(<$RD6>) {
     $count = $.;
     chomp;
     if($. & 1) {
       unless($_ eq 'This is the prefix ') {$ok = 0}
     }
     else {
       unless($_ eq '1.70000000000000000000e1 and this is the suffix') {$ok = 0}
     }
}

if($ok && $count == 10) {print "ok 6\n"}
else {
  warn "\n\$ok: $ok\n\$count: $count\n";
  print "not ok 6\n";
}

$ok = 1;
$count = 0;

while(<$RD7>) {
     $count = $.;
     chomp;
     if($. <= 5 && $. >= 1) {
       unless($_ eq 'From the first loop') {$ok = 0}
     }
     if($. == 6) {
       unless($_ eq 'From the second loop' x 5) {$ok = 0}
     }
     if($. <= 11 && $. >= 7) {
       unless($_ eq 'From the third loop') {$ok = 0}
     }
     if($. <= 16 && $. >= 12) {
       unless($_ eq 'From the fourth loop') {$ok = 0}
     }
     if($. == 17) {
       unless($_ eq 'From the fifth loop' x 5 . 'From the sixth loop' x 5) {$ok = 0}
     }
}

if($ok && $count == 17) {print "ok 7\n"}
else {
  warn "\n\$ok: $ok\n\$count: $count\n";
  print "not ok 7\n";
}

close $RD1 or die "Can't close RD1: $!";
close $RD2 or die "Can't close RD2: $!";
close $RD3 or die "Can't close RD3: $!";
close $RD4 or die "Can't close RD4: $!";
close $RD5 or die "Can't close RD5: $!";
close $RD6 or die "Can't close RD6: $!";
close $RD7 or die "Can't close RD7: $!";

open($WR8, '>', 'out1.txt') or die "Can't open WR8: $!";
print $WR8 "1.5e2\n";
close $WR8 or die "Can't close WR8: $!";

open($RD8, '<', 'out1.txt') or die "Can't open RD8: $!";
$ret = TRmpfr_inp_str($mpfr, \*$RD8, 10, GMP_RNDN);
close $RD8 or die "Can't close RD8: $!";

if($ret == 5 && $mpfr == 150) {print "ok 8\n"}
else {
  warn "\n\$ok: $ok\n\$count: $count\n";
  print "not ok 8\n";
}