From 477b02a49861370080e8d9572f6ad8117d156bb2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sosth=C3=A8ne=20Gu=C3=A9don?= <sosthene@guedon.gdn>
Date: Sun, 17 Jul 2022 10:13:31 +0200
Subject: [PATCH] Add tests for custom Some and None definitions

---
 tests/ui/iter_empty.fixed | 23 +++++++++++++++++++++++
 tests/ui/iter_empty.rs    | 23 +++++++++++++++++++++++
 tests/ui/iter_once.fixed  | 23 +++++++++++++++++++++++
 tests/ui/iter_once.rs     | 23 +++++++++++++++++++++++
 4 files changed, 92 insertions(+)

diff --git a/tests/ui/iter_empty.fixed b/tests/ui/iter_empty.fixed
index 1757547be297..68aad0e6757b 100644
--- a/tests/ui/iter_empty.fixed
+++ b/tests/ui/iter_empty.fixed
@@ -22,7 +22,30 @@ macro_rules! in_macros {
     };
 }
 
+// Don't trigger on a `None` that isn't std's option
+mod custom_option {
+    #[allow(unused)]
+    enum CustomOption {
+        Some(i32),
+        None,
+    }
+
+    impl CustomOption {
+        fn iter(&self) {}
+        fn iter_mut(&mut self) {}
+        fn into_iter(self) {}
+    }
+    use CustomOption::*;
+
+    pub fn custom_option() {
+        None.iter();
+        None.iter_mut();
+        None.into_iter();
+    }
+}
+
 fn main() {
     array();
+    custom_option::custom_option();
     in_macros!();
 }
diff --git a/tests/ui/iter_empty.rs b/tests/ui/iter_empty.rs
index a4fbee1f10f2..9a6cbf91643f 100644
--- a/tests/ui/iter_empty.rs
+++ b/tests/ui/iter_empty.rs
@@ -22,7 +22,30 @@ macro_rules! in_macros {
     };
 }
 
+// Don't trigger on a `None` that isn't std's option
+mod custom_option {
+    #[allow(unused)]
+    enum CustomOption {
+        Some(i32),
+        None,
+    }
+
+    impl CustomOption {
+        fn iter(&self) {}
+        fn iter_mut(&mut self) {}
+        fn into_iter(self) {}
+    }
+    use CustomOption::*;
+
+    pub fn custom_option() {
+        None.iter();
+        None.iter_mut();
+        None.into_iter();
+    }
+}
+
 fn main() {
     array();
+    custom_option::custom_option();
     in_macros!();
 }
diff --git a/tests/ui/iter_once.fixed b/tests/ui/iter_once.fixed
index 9c8ec23a3a9b..eb1d0739f454 100644
--- a/tests/ui/iter_once.fixed
+++ b/tests/ui/iter_once.fixed
@@ -22,7 +22,30 @@ macro_rules! in_macros {
     };
 }
 
+// Don't trigger on a `Some` that isn't std's option
+mod custom_option {
+    #[allow(unused)]
+    enum CustomOption {
+        Some(i32),
+        None,
+    }
+
+    impl CustomOption {
+        fn iter(&self) {}
+        fn iter_mut(&mut self) {}
+        fn into_iter(self) {}
+    }
+    use CustomOption::*;
+
+    pub fn custom_option() {
+        Some(3).iter();
+        Some(3).iter_mut();
+        Some(3).into_iter();
+    }
+}
+
 fn main() {
     array();
+    custom_option::custom_option();
     in_macros!();
 }
diff --git a/tests/ui/iter_once.rs b/tests/ui/iter_once.rs
index d294edc61dd8..b1ee137b6f4d 100644
--- a/tests/ui/iter_once.rs
+++ b/tests/ui/iter_once.rs
@@ -22,7 +22,30 @@ macro_rules! in_macros {
     };
 }
 
+// Don't trigger on a `Some` that isn't std's option
+mod custom_option {
+    #[allow(unused)]
+    enum CustomOption {
+        Some(i32),
+        None,
+    }
+
+    impl CustomOption {
+        fn iter(&self) {}
+        fn iter_mut(&mut self) {}
+        fn into_iter(self) {}
+    }
+    use CustomOption::*;
+
+    pub fn custom_option() {
+        Some(3).iter();
+        Some(3).iter_mut();
+        Some(3).into_iter();
+    }
+}
+
 fn main() {
     array();
+    custom_option::custom_option();
     in_macros!();
 }