diff --git a/tests/source/path_clarity/foo.rs b/tests/source/path_clarity/foo.rs
new file mode 100644
index 00000000000..cd247fabfe3
--- /dev/null
+++ b/tests/source/path_clarity/foo.rs
@@ -0,0 +1,2 @@
+// rustfmt-edition: 2018
+mod bar;
diff --git a/tests/source/path_clarity/foo/bar.rs b/tests/source/path_clarity/foo/bar.rs
new file mode 100644
index 00000000000..8c1be504c09
--- /dev/null
+++ b/tests/source/path_clarity/foo/bar.rs
@@ -0,0 +1,3 @@
+pub fn fn_in_bar( ) {
+    println!( "foo/bar.rs" );
+}
diff --git a/tests/target/path_clarity/foo.rs b/tests/target/path_clarity/foo.rs
new file mode 100644
index 00000000000..cd247fabfe3
--- /dev/null
+++ b/tests/target/path_clarity/foo.rs
@@ -0,0 +1,2 @@
+// rustfmt-edition: 2018
+mod bar;
diff --git a/tests/target/path_clarity/foo/bar.rs b/tests/target/path_clarity/foo/bar.rs
new file mode 100644
index 00000000000..b18a7d3499c
--- /dev/null
+++ b/tests/target/path_clarity/foo/bar.rs
@@ -0,0 +1,3 @@
+pub fn fn_in_bar() {
+    println!("foo/bar.rs");
+}