1 files changed, 44 insertions, 0 deletions
diff --git a/tests/ui/lint/lint-non-snake-case-functions.rs b/tests/ui/lint/lint-non-snake-case-functions.rs
new file mode 100644
index 00000000000..fa64a9f980e
--- /dev/null
+++ b/tests/ui/lint/lint-non-snake-case-functions.rs
@@ -0,0 +1,44 @@
+#![deny(non_snake_case)]
+#![allow(dead_code)]
+
+struct Foo;
+
+impl Foo {
+    fn Foo_Method() {}
+    //~^ ERROR method `Foo_Method` should have a snake case name
+
+    // Don't allow two underscores in a row
+    fn foo__method(&self) {}
+    //~^ ERROR method `foo__method` should have a snake case name
+
+    pub fn xyZ(&mut self) {}
+    //~^ ERROR method `xyZ` should have a snake case name
+
+    fn render_HTML() {}
+    //~^ ERROR method `render_HTML` should have a snake case name
+}
+
+trait X {
+    fn ABC();
+    //~^ ERROR trait method `ABC` should have a snake case name
+
+    fn a_b_C(&self) {}
+    //~^ ERROR trait method `a_b_C` should have a snake case name
+
+    fn something__else(&mut self);
+    //~^ ERROR trait method `something__else` should have a snake case name
+}
+
+impl X for Foo {
+    // These errors should be caught at the trait definition not the impl
+    fn ABC() {}
+    fn something__else(&mut self) {}
+}
+
+fn Cookie() {}
+//~^ ERROR function `Cookie` should have a snake case name
+
+pub fn bi_S_Cuit() {}
+//~^ ERROR function `bi_S_Cuit` should have a snake case name
+
+fn main() { }