add test for injecting scopes

1 files changed, 48 insertions, 0 deletions

diff --git a/t/scope-inject.t b/t/scope-inject.t
new file mode 100644
index 0000000..625896f
--- /dev/null
+++ b/t/scope-inject.t
@@ -0,0 +1,48 @@
+#!/usr/bin/env perl
+use strict;
+use warnings;
+use Test::More;
+
+BEGIN {
+    if (!eval { require B::Hooks::EndOfScope }) {
+        plan skip_all => "B::Hooks::EndOfScope is required for this test";
+    }
+}
+
+BEGIN {
+    package My::Parser;
+    use Exporter 'import';
+    our @EXPORT = 'foo';
+    use Parse::Keyword { foo => \&parse_foo };
+
+    sub foo { $_[0]->() }
+    sub parse_foo {
+        lex_read_space;
+        die "syntax error" unless lex_peek eq '{';
+        lex_read;
+        lex_stuff(
+            '{'
+              . 'my $foo = 42;'
+              . '{'
+                  . 'BEGIN { B::Hooks::EndOfScope::on_scope_end {'
+                      . 'Parse::Keyword::lex_stuff(q[}])'
+                  . '} }'
+        );
+        my $body = parse_block;
+        return sub { $body };
+    }
+
+    $INC{'My/Parser.pm'} = __FILE__;
+}
+
+use My::Parser;
+
+is(foo { $foo }, 42);
+{
+    my $warnings;
+    local $SIG{__WARN__} = sub { $warnings .= $_[0] };
+    is(foo { my $foo = 12; $foo }, 12);
+    is($warnings, undef);
+}
+
+done_testing;