diff --git a/src/uu/env/src/env.rs b/src/uu/env/src/env.rs
index 3908e9e78..f4282326f 100644
--- a/src/uu/env/src/env.rs
+++ b/src/uu/env/src/env.rs
@@ -606,3 +606,39 @@ fn apply_specified_env_vars(opts: &Options<'_>) {
 pub fn uumain(args: impl uucore::Args) -> UResult<()> {
     EnvAppData::default().run_env(args)
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_split_string_environment_vars_test() {
+        std::env::set_var("FOO", "BAR");
+        assert_eq!(
+            NCvt::convert(vec!["FOO=bar", "sh", "-c", "echo xBARx =$FOO="]),
+            parse_args_from_str(&NCvt::convert(r#"FOO=bar sh -c "echo x${FOO}x =\$FOO=""#))
+                .unwrap(),
+        );
+    }
+
+    #[test]
+    fn test_split_string_misc() {
+        assert_eq!(
+            NCvt::convert(vec!["A=B", "FOO=AR", "sh", "-c", "echo $A$FOO"]),
+            parse_args_from_str(&NCvt::convert(r#"A=B FOO=AR  sh -c "echo \$A\$FOO""#)).unwrap(),
+        );
+        assert_eq!(
+            NCvt::convert(vec!["A=B", "FOO=AR", "sh", "-c", "echo $A$FOO"]),
+            parse_args_from_str(&NCvt::convert(r#"A=B FOO=AR  sh -c 'echo $A$FOO'"#)).unwrap()
+        );
+        assert_eq!(
+            NCvt::convert(vec!["A=B", "FOO=AR", "sh", "-c", "echo $A$FOO"]),
+            parse_args_from_str(&NCvt::convert(r#"A=B FOO=AR  sh -c 'echo $A$FOO'"#)).unwrap()
+        );
+
+        assert_eq!(
+            NCvt::convert(vec!["-i", "A=B ' C"]),
+            parse_args_from_str(&NCvt::convert(r#"-i A='B \' C'"#)).unwrap()
+        );
+    }
+}
diff --git a/tests/by-util/test_env.rs b/tests/by-util/test_env.rs
index 94b73284d..18edc5dd6 100644
--- a/tests/by-util/test_env.rs
+++ b/tests/by-util/test_env.rs
@@ -7,7 +7,6 @@
 #[cfg(target_os = "linux")]
 use crate::common::util::expected_result;
 use crate::common::util::TestScenario;
-use env::native_int_str::{Convert, NCvt};
 use regex::Regex;
 use std::env;
 use std::path::Path;
@@ -473,40 +472,6 @@ fn test_gnu_e20() {
     assert_eq!(out.stdout_str(), output);
 }
 
-#[test]
-fn test_split_string_misc() {
-    use env::native_int_str::NCvt;
-    use env::parse_args_from_str;
-
-    assert_eq!(
-        NCvt::convert(vec!["A=B", "FOO=AR", "sh", "-c", "echo $A$FOO"]),
-        parse_args_from_str(&NCvt::convert(r#"A=B FOO=AR  sh -c "echo \$A\$FOO""#)).unwrap(),
-    );
-    assert_eq!(
-        NCvt::convert(vec!["A=B", "FOO=AR", "sh", "-c", "echo $A$FOO"]),
-        parse_args_from_str(&NCvt::convert(r#"A=B FOO=AR  sh -c 'echo $A$FOO'"#)).unwrap()
-    );
-    assert_eq!(
-        NCvt::convert(vec!["A=B", "FOO=AR", "sh", "-c", "echo $A$FOO"]),
-        parse_args_from_str(&NCvt::convert(r#"A=B FOO=AR  sh -c 'echo $A$FOO'"#)).unwrap()
-    );
-
-    assert_eq!(
-        NCvt::convert(vec!["-i", "A=B ' C"]),
-        parse_args_from_str(&NCvt::convert(r#"-i A='B \' C'"#)).unwrap()
-    );
-}
-
-#[test]
-fn test_split_string_environment_vars_test() {
-    std::env::set_var("FOO", "BAR");
-    assert_eq!(
-        NCvt::convert(vec!["FOO=bar", "sh", "-c", "echo xBARx =$FOO="]),
-        ::env::parse_args_from_str(&NCvt::convert(r#"FOO=bar sh -c "echo x${FOO}x =\$FOO=""#))
-            .unwrap(),
-    );
-}
-
 #[macro_export]
 macro_rules! compare_with_gnu {
     ( $ts:expr, $args:expr ) => {{