Add descriptions to tests for int.t

1 files changed, 17 insertions, 13 deletions

diff --git a/t/op/int.t b/t/op/int.t
index 6d3b5b496c..9aad020a48 100644
--- a/t/op/int.t
+++ b/t/op/int.t
@@ -10,26 +10,28 @@ plan 15;
 
 # compile time evaluation
 
-if (int(1.234) == 1) {pass()} else {fail()}
+my $test1_descr = 'compile time evaluation 1.234';
+if (int(1.234) == 1) {pass($test1_descr)} else {fail($test1_descr)}
 
-if (int(-1.234) == -1) {pass()} else {fail()}
+my $test2_descr = 'compile time evaluation -1.234';
+if (int(-1.234) == -1) {pass($test2_descr)} else {fail($test2_descr)}
 
 # run time evaluation
 
 $x = 1.234;
-cmp_ok(int($x), '==', 1);
-cmp_ok(int(-$x), '==', -1);
+cmp_ok(int($x), '==', 1, 'run time evaluation 1');
+cmp_ok(int(-$x), '==', -1, 'run time evaluation -1');
 
 $x = length("abc") % -10;
-cmp_ok($x, '==', -7);
+cmp_ok($x, '==', -7, 'subtract from string length');
 
 {
     my $fail;
     use integer;
     $x = length("abc") % -10;
     $y = (3/-10)*-10;
-    ok($x+$y == 3) or ++$fail;
-    ok(abs($x) < 10) or ++$fail;
+    ok($x+$y == 3, 'x+y equals 3') or ++$fail;
+    ok(abs($x) < 10, 'abs(x) < 10') or ++$fail;
     if ($fail) {
 	diag("\$x == $x", "\$y == $y");
     }
@@ -38,32 +40,34 @@ cmp_ok($x, '==', -7);
 @x = ( 6, 8, 10);
 cmp_ok($x["1foo"], '==', 8, 'check bad strings still get converted');
 
+# 4,294,967,295 is largest unsigned 32 bit integer
+
 $x = 4294967303.15;
 $y = int ($x);
 is($y, "4294967303", 'check values > 32 bits work');
 
 $y = int (-$x);
 
-is($y, "-4294967303");
+is($y, "-4294967303", 'negative value more than maximum unsigned 32 bit value');
 
 $x = 4294967294.2;
 $y = int ($x);
 
-is($y, "4294967294");
+is($y, "4294967294", 'floating point value slightly less than the largest unsigned 32 bit');
 
 $x = 4294967295.7;
 $y = int ($x);
 
-is($y, "4294967295");
+is($y, "4294967295", 'floating point value slightly more than largest unsigned 32 bit');
 
 $x = 4294967296.11312;
 $y = int ($x);
 
-is($y, "4294967296");
+is($y, "4294967296", 'floating point value more than largest unsigned 32 bit');
 
 $y = int(279964589018079/59);
-cmp_ok($y, '==', 4745162525730);
+cmp_ok($y, '==', 4745162525730, 'compile time division, result of about 42 bits');
 
 $y = 279964589018079;
 $y = int($y/59);
-cmp_ok($y, '==', 4745162525730);
+cmp_ok($y, '==', 4745162525730, 'run time divison, result of about 42 bits');