From dad4f73484a0c30596afd7a1834a02cc83fc7914 Mon Sep 17 00:00:00 2001
From: Samuel Moelius <sam@moeli.us>
Date: Thu, 27 Apr 2023 12:55:20 -0400
Subject: [PATCH] Add `examples_do_not_have_gitignore` test

---
 Cargo.lock          |  1 +
 examples/Cargo.toml |  1 +
 examples/src/lib.rs | 14 ++++++++++++++
 3 files changed, 16 insertions(+)

diff --git a/Cargo.lock b/Cargo.lock
index d775dc35d..92892c5b0 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -863,6 +863,7 @@ dependencies = [
  "cargo_metadata",
  "dylint_internal",
  "toml_edit 0.19.8",
+ "walkdir",
 ]
 
 [[package]]
diff --git a/examples/Cargo.toml b/examples/Cargo.toml
index fa3345e7d..136e67a38 100644
--- a/examples/Cargo.toml
+++ b/examples/Cargo.toml
@@ -9,5 +9,6 @@ publish = false
 [dev-dependencies]
 cargo_metadata = "0.15"
 toml_edit = "0.19"
+walkdir = "2.3"
 
 dylint_internal = { version = "=2.1.7", path = "../internal", features = ["clippy_utils", "examples"] }
diff --git a/examples/src/lib.rs b/examples/src/lib.rs
index 95e9f3025..8dc741491 100644
--- a/examples/src/lib.rs
+++ b/examples/src/lib.rs
@@ -6,6 +6,7 @@ mod test {
     };
     use std::{ffi::OsStr, fs::read_to_string};
     use toml_edit::{Document, Item, Value};
+    use walkdir::WalkDir;
 
     #[test]
     fn examples() {
@@ -95,4 +96,17 @@ mod test {
             assert!(!components.contains(&"rust-src"));
         }
     }
+
+    #[test]
+    fn examples_do_not_have_gitignore() {
+        for entry in WalkDir::new(".") {
+            let entry = entry.unwrap();
+            let path = entry.path();
+            assert_ne!(
+                path.file_name(),
+                Some(OsStr::new(".gitignore")),
+                "failed for {path:?}"
+            );
+        }
+    }
 }