feat: add testing macros and unit tests for linters

Add `assert_detected!` and `assert_not_detected!` macros to simplify
writing lint tests, along with initial test coverage for the
unnecessary render result creation linter.

1 files changed, 8 insertions, 0 deletions

diff --git a/mingling_cli/src/lints/template_linter.rs b/mingling_cli/src/lints/template_linter.rs
index 4ea2f94..271aa0c 100644
--- a/mingling_cli/src/lints/template_linter.rs
+++ b/mingling_cli/src/lints/template_linter.rs
@@ -46,3 +46,11 @@ pub fn linter(_ast: syn::ItemFn, _source: &str) -> Vec<MlintReport> {
     //                               | syn::ItemUnion
     vec![]
 }
+
+#[cfg(test)]
+mod lint_test {
+    use crate::{assert_detected, assert_not_detected};
+
+    #[test]
+    fn test() {}
+}