Auto merge of #87686 - matthiaskrgr:clippy_august_21_perf, r=jackh726

[rust.git] / src / tools / clippy / tests / ui / search_is_some.rs

diff --git a/src/tools/clippy/tests/ui/search_is_some.rs b/src/tools/clippy/tests/ui/search_is_some.rs
index f0dc3b3d06bbc7f4f30d4c32e51e0d9dd2a968af..72bc6ef35d317b02f9c5300affc0e6923fdd7790 100644 (file)
--- a/src/tools/clippy/tests/ui/search_is_some.rs
+++ b/src/tools/clippy/tests/ui/search_is_some.rs
@@ -1,8 +1,9 @@
 // aux-build:option_helpers.rs
+#![warn(clippy::search_is_some)]
+#![allow(dead_code)]
 extern crate option_helpers;
 use option_helpers::IteratorFalsePositives;
 
-#[warn(clippy::search_is_some)]
 #[rustfmt::skip]
 fn main() {
     let v = vec![3, 2, 1, 0, -1, -2, -3];
@@ -36,3 +37,37 @@ fn main() {
     // `Pattern` that is not a string
     let _ = "hello world".find(|c: char| c == 'o' || c == 'l').is_some();
 }
+
+#[rustfmt::skip]
+fn is_none() {
+    let v = vec![3, 2, 1, 0, -1, -2, -3];
+    let y = &&42;
+
+
+    // Check `find().is_none()`, multi-line case.
+    let _ = v.iter().find(|&x| {
+                              *x < 0
+                          }
+                   ).is_none();
+
+    // Check `position().is_none()`, multi-line case.
+    let _ = v.iter().position(|&x| {
+                                  x < 0
+                              }
+                   ).is_none();
+
+    // Check `rposition().is_none()`, multi-line case.
+    let _ = v.iter().rposition(|&x| {
+                                   x < 0
+                               }
+                   ).is_none();
+
+    // Check that we don't lint if the caller is not an `Iterator` or string
+    let falsepos = IteratorFalsePositives { foo: 0 };
+    let _ = falsepos.find().is_none();
+    let _ = falsepos.position().is_none();
+    let _ = falsepos.rposition().is_none();
+    // check that we don't lint if `find()` is called with
+    // `Pattern` that is not a string
+    let _ = "hello world".find(|c: char| c == 'o' || c == 'l').is_none();
+}