diff --git a/tests/source/file-lines-4.rs b/tests/source/file-lines-4.rs
index c6c0a5f82a0..36b632c7df0 100644
--- a/tests/source/file-lines-4.rs
+++ b/tests/source/file-lines-4.rs
@@ -11,10 +11,10 @@ fn floaters() {
     let y = if cond {
                 val1
             } else {
-                val2
+                val2	
             }
                 .method_call();
-
+                                                                                              // aaaaaaaaaaaaa
     {
         match x {
             PushParam => {
@@ -24,6 +24,6 @@ fn floaters() {
                                         }]
                                .clone());
             }
-        }
+        }    
     }
 }
diff --git a/tests/source/file-lines-5.rs b/tests/source/file-lines-5.rs
new file mode 100644
index 00000000000..8ec2c67bc44
--- /dev/null
+++ b/tests/source/file-lines-5.rs
@@ -0,0 +1,17 @@
+// rustfmt-file_lines: [{"file":"tests/source/file-lines-5.rs","range":[3,5]}]
+
+struct A {
+t: i64,     
+}
+
+mod foo {
+    fn bar() {
+                         // test
+                             let i = 12;
+                                 // test
+    }
+    // aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+    fn baz() {
+        let j = 15;     
+    }
+}
diff --git a/tests/source/file-lines-6.rs b/tests/source/file-lines-6.rs
new file mode 100644
index 00000000000..2eacc8a0e75
--- /dev/null
+++ b/tests/source/file-lines-6.rs
@@ -0,0 +1,18 @@
+// rustfmt-file_lines: [{"file":"tests/source/file-lines-6.rs","range":[9,10]}]
+
+struct A {
+    t: i64,
+}
+
+mod foo {
+    fn bar() {
+                         // test	
+                             let i = 12;
+                                 // test
+    }
+
+    fn baz() {
+///
+        let j = 15;     
+    }
+}
diff --git a/tests/target/file-lines-4.rs b/tests/target/file-lines-4.rs
index c6c0a5f82a0..36b632c7df0 100644
--- a/tests/target/file-lines-4.rs
+++ b/tests/target/file-lines-4.rs
@@ -11,10 +11,10 @@ fn floaters() {
     let y = if cond {
                 val1
             } else {
-                val2
+                val2	
             }
                 .method_call();
-
+                                                                                              // aaaaaaaaaaaaa
     {
         match x {
             PushParam => {
@@ -24,6 +24,6 @@ fn floaters() {
                                         }]
                                .clone());
             }
-        }
+        }    
     }
 }
diff --git a/tests/target/file-lines-5.rs b/tests/target/file-lines-5.rs
new file mode 100644
index 00000000000..3966dc06303
--- /dev/null
+++ b/tests/target/file-lines-5.rs
@@ -0,0 +1,17 @@
+// rustfmt-file_lines: [{"file":"tests/source/file-lines-5.rs","range":[3,5]}]
+
+struct A {
+    t: i64,
+}
+
+mod foo {
+    fn bar() {
+                         // test
+                             let i = 12;
+                                 // test
+    }
+    // aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+    fn baz() {
+        let j = 15;     
+    }
+}
diff --git a/tests/target/file-lines-6.rs b/tests/target/file-lines-6.rs
new file mode 100644
index 00000000000..8a092df869a
--- /dev/null
+++ b/tests/target/file-lines-6.rs
@@ -0,0 +1,18 @@
+// rustfmt-file_lines: [{"file":"tests/source/file-lines-6.rs","range":[9,10]}]
+
+struct A {
+    t: i64,
+}
+
+mod foo {
+    fn bar() {
+        // test
+        let i = 12;
+                                 // test
+    }
+
+    fn baz() {
+///
+        let j = 15;     
+    }
+}