Close #34 by where fixture::get use

original function. Implemented test
and fixed regression introduced by
partials calls that raise warning about
unused mut. Shut up unsused mut
warning in both get() and partial_ impl.

resources/fixture/no_warning.rs

@@ -0,0 +1,10 @@
+use rstest::*;
+
+#[fixture]
+fn val() -> i32 { 21 }
+
+#[fixture]
+fn fortytwo(mut val: i32) -> i32 { val *= 2; val }
+
+#[rstest]
+fn the_test(fortytwo: i32) { assert_eq!(fortytwo, 42); }

src/render/fixture.rs

@@ -22,7 +22,6 @@ pub(crate) fn render<'a>(fixture: ItemFn, info: FixtureInfo) -> TokenStream {
     let default_generics =
         generics_clean_up(&fixture.sig.generics, std::iter::empty(), &default_output);
     let default_where_clause = &default_generics.where_clause;
-    let body = &fixture.block;
     let where_clause = &fixture.sig.generics.where_clause;
     let output = &fixture.sig.output;
     let visibility = &fixture.vis;
@@ -36,8 +35,9 @@ pub(crate) fn render<'a>(fixture: ItemFn, info: FixtureInfo) -> TokenStream {
 
         impl #name {
             #(#orig_attrs)*
+            #[allow(unused_mut)]
             pub fn get #generics (#orig_args) #output #where_clause {
-                #body
+                #name(#(#args),*)
             }
 
             pub fn default #default_generics () #default_output #default_where_clause {
@@ -74,6 +74,7 @@ fn render_partial_impl(
     let name = Ident::new(&format!("partial_{}", n), Span::call_site());
 
     quote! {
+        #[allow(unused_mut)]
         pub fn #name #generics (#(#sign_args),*) #output #where_clause {
             #inject
             Self::get(#(#fixture_args),*)

tests/fixture/mod.rs

@@ -46,6 +46,13 @@ mod should {
         TestResults::new().ok("struct_access").assert(output);
     }
 
+    #[test]
+    fn not_show_any_warning() {
+        let (output, _) = run_test("no_warning.rs");
+
+        assert_not_in!(output.stderr.str(), "warning:");
+    }
+
     mod accept_and_return {
         use super::*;