diff --git a/tests/ui/large_digit_groups.fixed b/tests/ui/large_digit_groups.fixed
new file mode 100644
index 00000000000..cf8b36a499b
--- /dev/null
+++ b/tests/ui/large_digit_groups.fixed
@@ -0,0 +1,23 @@
+// run-rustfix
+#[warn(clippy::large_digit_groups)]
+#[allow(unused_variables)]
+fn main() {
+    let good = (
+        0b1011_i64,
+        0o1_234_u32,
+        0x1_234_567,
+        1_2345_6789,
+        1234_f32,
+        1_234.12_f32,
+        1_234.123_f32,
+        1.123_4_f32,
+    );
+    let bad = (
+        0b11_0110_i64,
+        0x0123_4567_8901_usize,
+        123_456_f32,
+        123_456.12_f32,
+        123_456.123_45_f64,
+        123_456.123_456_f64,
+    );
+}
diff --git a/tests/ui/large_digit_groups.rs b/tests/ui/large_digit_groups.rs
index 76c3414bb02..5b9aa8c58d8 100644
--- a/tests/ui/large_digit_groups.rs
+++ b/tests/ui/large_digit_groups.rs
@@ -1,3 +1,4 @@
+// run-rustfix
 #[warn(clippy::large_digit_groups)]
 #[allow(unused_variables)]
 fn main() {
@@ -16,7 +17,7 @@ fn main() {
         0x1_23456_78901_usize,
         1_23456_f32,
         1_23456.12_f32,
-        1_23456.12345_f32,
-        1_23456.12345_6_f32,
+        1_23456.12345_f64,
+        1_23456.12345_6_f64,
     );
 }
diff --git a/tests/ui/large_digit_groups.stderr b/tests/ui/large_digit_groups.stderr
index 45aef91069b..4b5d0bd1a9f 100644
--- a/tests/ui/large_digit_groups.stderr
+++ b/tests/ui/large_digit_groups.stderr
@@ -1,5 +1,5 @@
 error: digit groups should be smaller
-  --> $DIR/large_digit_groups.rs:15:9
+  --> $DIR/large_digit_groups.rs:16:9
    |
 LL |         0b1_10110_i64,
    |         ^^^^^^^^^^^^^ help: consider: `0b11_0110_i64`
@@ -7,34 +7,34 @@ LL |         0b1_10110_i64,
    = note: `-D clippy::large-digit-groups` implied by `-D warnings`
 
 error: digit groups should be smaller
-  --> $DIR/large_digit_groups.rs:16:9
+  --> $DIR/large_digit_groups.rs:17:9
    |
 LL |         0x1_23456_78901_usize,
    |         ^^^^^^^^^^^^^^^^^^^^^ help: consider: `0x0123_4567_8901_usize`
 
 error: digit groups should be smaller
-  --> $DIR/large_digit_groups.rs:17:9
+  --> $DIR/large_digit_groups.rs:18:9
    |
 LL |         1_23456_f32,
    |         ^^^^^^^^^^^ help: consider: `123_456_f32`
 
 error: digit groups should be smaller
-  --> $DIR/large_digit_groups.rs:18:9
+  --> $DIR/large_digit_groups.rs:19:9
    |
 LL |         1_23456.12_f32,
    |         ^^^^^^^^^^^^^^ help: consider: `123_456.12_f32`
 
-error: digit groups should be smaller
-  --> $DIR/large_digit_groups.rs:19:9
-   |
-LL |         1_23456.12345_f32,
-   |         ^^^^^^^^^^^^^^^^^ help: consider: `123_456.123_45_f32`
-
 error: digit groups should be smaller
   --> $DIR/large_digit_groups.rs:20:9
    |
-LL |         1_23456.12345_6_f32,
-   |         ^^^^^^^^^^^^^^^^^^^ help: consider: `123_456.123_456_f32`
+LL |         1_23456.12345_f64,
+   |         ^^^^^^^^^^^^^^^^^ help: consider: `123_456.123_45_f64`
+
+error: digit groups should be smaller
+  --> $DIR/large_digit_groups.rs:21:9
+   |
+LL |         1_23456.12345_6_f64,
+   |         ^^^^^^^^^^^^^^^^^^^ help: consider: `123_456.123_456_f64`
 
 error: aborting due to 6 previous errors