tests: cleanup test_util module

We can remove the `tests` module as the entire file is only
available when running tests.

Follow-up of #7130 / 1f13165fae.

Signed-off-by: Philipp Schuster <philipp.schuster@cyberus-technology.de>
On-behalf-of: SAP philipp.schuster@sap.com

src/bin/ch-remote.rs

@@ -1142,7 +1142,7 @@ mod tests {
     use std::cmp::Ordering;
 
     use super::*;
-    use crate::test_util::tests::assert_args_sorted;
+    use crate::test_util::assert_args_sorted;
 
     #[test]
     fn test_cli_args_sorted() {

src/main.rs

@@ -907,7 +907,7 @@ mod unit_tests {
         PayloadConfig, RngConfig, VmConfig,
     };
 
-    use crate::test_util::tests::assert_args_sorted;
+    use crate::test_util::assert_args_sorted;
     use crate::{create_app, get_cli_options_sorted, prepare_default_values};
 
     fn get_vm_config_from_vec(args: &[&str]) -> VmConfig {

src/test_util.rs

@@ -3,22 +3,22 @@
 // SPDX-License-Identifier: Apache-2.0
 //
 
-#[cfg(test)]
-pub mod tests {
-    use std::cmp::Ordering;
+//! Test utilities.
 
-    use clap::Arg;
+use std::cmp::Ordering;
 
-    pub fn assert_args_sorted<'a, F: Fn() -> R, R: Iterator<Item = &'a Arg>>(get_base_iter: F) {
-        let iter = get_base_iter().zip(get_base_iter().skip(1));
-        for (arg, next) in iter {
-            assert_ne!(
-                arg.get_id().cmp(next.get_id()),
-                Ordering::Greater,
-                "args not alphabetically sorted: arg={}, next={}",
-                arg.get_id(),
-                next.get_id()
-            );
-        }
+use clap::Arg;
+
+/// Ensures that all [`Arg`]s are sorted alphabetically.
+pub fn assert_args_sorted<'a, F: Fn() -> R, R: Iterator<Item = &'a Arg>>(get_base_iter: F) {
+    let iter = get_base_iter().zip(get_base_iter().skip(1));
+    for (arg, next) in iter {
+        assert_ne!(
+            arg.get_id().cmp(next.get_id()),
+            Ordering::Greater,
+            "args not alphabetically sorted: arg={}, next={}",
+            arg.get_id(),
+            next.get_id()
+        );
     }
 }