test for broken undef detection

Signed-off-by: Fabian Ebner <f.ebner@proxmox.com>
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>

perlmod-test/src/lib.rs

@@ -9,3 +9,6 @@ mod pkginline;
 
 /// A test for blessed values.
 mod bless;
+
+/// Tests for `Option`.
+mod option;

perlmod-test/src/option.rs

@@ -0,0 +1,19 @@
+#[perlmod::package(name = "RSPM::Option", lib = "perlmod_test")]
+mod export {
+    use serde::{Deserialize, Serialize};
+
+    #[derive(Deserialize, Serialize)]
+    pub struct WithOption {
+        tristate: Option<bool>,
+    }
+
+    #[export]
+    pub fn to_string(tristate: Option<bool>) -> String {
+        format!("{:?}", tristate)
+    }
+
+    #[export]
+    pub fn struct_to_string(with_option: WithOption) -> String {
+        format!("{:?}", with_option.tristate)
+    }
+}

test.pl

@@ -5,6 +5,7 @@ use v5.28.0;
 use lib '.';
 use RSPM::Bless;
 use RSPM::Foo142;
+use RSPM::Option;
 
 my $v = RSPM::Bless->new("Hello");
 $v->something();
@@ -40,3 +41,28 @@ my $b = RSPM::Foo142::test_serde($a);
 print $b;
 my $c = RSPM::Foo142::test_serde($b);
 print $c;
+
+sub to_string {
+    my ($param) = @_;
+
+    my $state = $param->{tristate};
+    $state = int($state) if defined($state);
+
+    my $a;
+    if (defined($state)) {
+	$a = $state ? "Some(true)" : "Some(false)";
+    } else {
+	$a = "None";
+    }
+
+    my $b = RSPM::Option::to_string($state);
+    my $c = RSPM::Option::struct_to_string({ 'tristate' => $state });
+
+    print "$a\n";
+    print "$b\n";
+    print "$c\n";
+}
+
+to_string({ 'tristate' => '0' });
+to_string({ 'tristate' => '1' });
+to_string({ 'tristate' => undef });

test.pl.expected

@@ -19,3 +19,12 @@ Can I have some coffee please?
 Can I have some ☕ please?
 Can I have some ☕ please?
 Can I have some ☕ please?
+Some(false)
+Some(false)
+Some(false)
+Some(true)
+Some(true)
+Some(true)
+None
+None
+None