Add 'src/tools/clippy/' from commit 'd2708873ef711ec8ab45df1e984ecf24a96cd369'

git-subtree-dir: src/tools/clippy
git-subtree-mainline: 06c44816c1532e5ff08ad072f581fc068eb60e2e
git-subtree-split: d2708873ef711ec8ab45df1e984ecf24a96cd369

1 files changed, 14 insertions, 0 deletions

diff --git a/src/tools/clippy/tests/ui/open_options.rs b/src/tools/clippy/tests/ui/open_options.rs
new file mode 100644
index 00000000000..9063fafbcd0
--- /dev/null
+++ b/src/tools/clippy/tests/ui/open_options.rs
@@ -0,0 +1,14 @@
+use std::fs::OpenOptions;
+
+#[allow(unused_must_use)]
+#[warn(clippy::nonsensical_open_options)]
+fn main() {
+    OpenOptions::new().read(true).truncate(true).open("foo.txt");
+    OpenOptions::new().append(true).truncate(true).open("foo.txt");
+
+    OpenOptions::new().read(true).read(false).open("foo.txt");
+    OpenOptions::new().create(true).create(false).open("foo.txt");
+    OpenOptions::new().write(true).write(false).open("foo.txt");
+    OpenOptions::new().append(true).append(false).open("foo.txt");
+    OpenOptions::new().truncate(true).truncate(false).open("foo.txt");
+}