Introduce src dir.

[librarian.git] / src / librarian / font-optimizer / t / subsetter.pl

diff --git a/src/librarian/font-optimizer/t/subsetter.pl b/src/librarian/font-optimizer/t/subsetter.pl
new file mode 100644 (file)
index 0000000..5cb15df
--- /dev/null
+++ b/src/librarian/font-optimizer/t/subsetter.pl
@@ -0,0 +1,47 @@
+#!/usr/bin/perl
+
+use strict;
+use warnings;
+
+use Test::More qw(no_plan);
+
+use lib 'ext/Font-TTF/lib';
+use Font::Subsetter;
+use Unicode::Normalize;
+
+# Test that we include characters needed for strings converted to NFC
+for my $str (
+    "i",
+    "\xec",
+    "i\x{0300}",
+    "\x{0300}i",
+    "\x{03b9}\x{0308}\x{0301}", # iota, combining diaeresis, combining acute
+    "s\x{0323}\x{0307}", # s, combining dot below, combining dot above
+    "s\x{0307}\x{0323}", # s, combining dot above, combining dot below
+    "\x{1e61}\x{0323}", # s with dot above, combining dot below
+    "\x{1e63}\x{0307}", # s with dot below, combining dot above
+    "\x{212b}", # angstrom
+) {
+    my $subsetter = new Font::Subsetter;
+    my %chars = $subsetter->expand_wanted_chars($str);
+    for (map ord, split //, $str) {
+        ok($chars{$_}, "char ".(sprintf '%04x', $_)." in string '".(join ' ', map { sprintf '%04x', $_ } unpack 'U*', $str)."'");
+    }
+    for (map ord, split //, Unicode::Normalize::NFC($str)) {
+        ok($chars{$_}, "NFC char ".(sprintf '%04x', $_)." in string '".(join ' ', map { sprintf '%04x', $_ } unpack 'U*', $str)."'");
+    }
+}
+
+# Test that spurious characters aren't included
+for my $str (
+    "a\xec",
+) {
+    my $subsetter = new Font::Subsetter;
+    my %chars = $subsetter->expand_wanted_chars($str);
+    my %exp;
+    $exp{$_} = 1 for map ord, split //, $str;
+    $exp{$_} = 1 for map ord, split //, Unicode::Normalize::NFC($str);
+    for (sort keys %chars) {
+        ok($exp{$_}, "expected char ".(sprintf '%04x', $_)." from string '".(join ' ', map { sprintf '%04x', $_ } unpack 'U*', $str)."'");
+    }
+}