Add generic tests for try_fold

Author: cuviper

src/compile_fail/must_use.rs

@@ -27,6 +27,8 @@ must_use! {
     flatten             /** v.par_iter().flatten(); */
     fold                /** v.par_iter().fold(|| 0, |x, _| x); */
     fold_with           /** v.par_iter().fold_with(0, |x, _| x); */
+    try_fold            /** v.par_iter().try_fold(|| 0, |x, _| Some(x)); */
+    try_fold_with       /** v.par_iter().try_fold_with(0, |x, _| Some(x)); */
     inspect             /** v.par_iter().inspect(|_| {}); */
     interleave          /** v.par_iter().interleave(&v); */
     interleave_shortest /** v.par_iter().interleave_shortest(&v); */

tests/clones.rs

@@ -114,6 +114,8 @@ fn clone_adaptors() {
     check(v.par_iter().flatten());
     check(v.par_iter().with_max_len(1).fold(|| 0, |x, _| x));
     check(v.par_iter().with_max_len(1).fold_with(0, |x, _| x));
+    check(v.par_iter().with_max_len(1).try_fold(|| 0, |_, &x| x));
+    check(v.par_iter().with_max_len(1).try_fold_with(0, |_, &x| x));
     check(v.par_iter().inspect(|_| ()));
     check(v.par_iter().update(|_| ()));
     check(v.par_iter().interleave(&v));

tests/debug.rs

@@ -125,6 +125,8 @@ fn debug_adaptors() {
     check(v.par_iter().map(Some).flatten());
     check(v.par_iter().fold(|| 0, |x, _| x));
     check(v.par_iter().fold_with(0, |x, _| x));
+    check(v.par_iter().try_fold(|| 0, |x, _| Some(x)));
+    check(v.par_iter().try_fold_with(0, |x, _| Some(x)));
     check(v.par_iter().inspect(|_| ()));
     check(v.par_iter().update(|_| ()));
     check(v.par_iter().interleave(&v));