charnames.t: PERL_RUN_SLOW_TESTS runs more tests

This patch makes this .t look for this environment variable, and if set
run more tests.  There are two levels of setting, as explained in the
comments

diff --git a/lib/charnames.t b/lib/charnames.t
index 883740e..4271b58 100644 (file)
--- a/lib/charnames.t
+++ b/lib/charnames.t
@@ -1,6 +1,16 @@
 #!./perl
 use strict;
 
+# Test charnames.pm.  If $ENV{PERL_RUN_SLOW_TESTS} is unset or 0, a  random
+# selection of names is tested, a higher percentage of regular names is tested
+# than algorithmically-determined names.
+
+my $RUN_SLOW_TESTS_EVERY_CODE_POINT = 100;
+
+# If $ENV{PERL_RUN_SLOW_TESTS} is at least 1 and less than the number above,
+# all code points with names are tested.  If it is at least that number, all
+# 1,114,112 Unicode code points are tested.
+
 # Because \N{} is compile time, any warnings will get generated before
 # execution, so have to have an array, and arrange things so no warning
 # is generated twice to verify that in fact a warning did happen
@@ -848,6 +858,8 @@ is("\N{U+1D0C5}", "\N{BYZANTINE MUSICAL SYMBOL FTHORA SKLIRON CHROMA VASIS}");
         $seed = srand;
     }
 
+    my $run_slow_tests = $ENV{PERL_RUN_SLOW_TESTS} || 0;
+
     # We will look at the data grouped in "blocks" of the following
     # size.
     my $block_size_bits = 7;   # above 16 is not sensible
@@ -859,7 +871,7 @@ is("\N{U+1D0C5}", "\N{BYZANTINE MUSICAL SYMBOL FTHORA SKLIRON CHROMA VASIS}");
     # of the character.  The percentage of each type to test is
     # fuzzily independently settable.  This breaks down when the block size is
     # 1 or is large enough that both types of names occur in the same block
-    my $percentage_of_regular_names = 25;
+    my $percentage_of_regular_names = ($run_slow_tests) ? 100 : 25;
     my $percentage_of_algorithmic_names = (100 / $block_size); # 1 test/block
 
     # If wants everything tested, do so by changing the block size to 1 so
@@ -1002,6 +1014,7 @@ is("\N{U+1D0C5}", "\N{BYZANTINE MUSICAL SYMBOL FTHORA SKLIRON CHROMA VASIS}");
         my $end_block = $block;
         if ($test_count == 0) {
             $test_count = 1;
+            if ($run_slow_tests < $RUN_SLOW_TESTS_EVERY_CODE_POINT) {
             $end_block++;
 
             # Keep coalescing until find a block that has something in
@@ -1015,6 +1028,7 @@ is("\N{U+1D0C5}", "\N{BYZANTINE MUSICAL SYMBOL FTHORA SKLIRON CHROMA VASIS}");
                 $end_block++;
             }
             $end_block--;   # Back-off to a block that has no defined names
+            }
         }
 
         # Calculated how many tests.  Do them