diff --git a/bin/tests/collapsible_let_in.rs b/bin/tests/collapsible_let_in.rs
new file mode 100644
index 0000000..b2a2e9c
--- /dev/null
+++ b/bin/tests/collapsible_let_in.rs
@@ -0,0 +1,22 @@
+mod _utils;
+
+use indoc::indoc;
+
+use macros::generate_tests;
+
+generate_tests! {
+    rule: manual_inherit,
+    expressions: [
+        indoc! {r"
+            let
+              a = 2;
+              b = 3;
+            in
+              let
+                c = 5;
+                d = 6;
+              in
+              a + b + c + d
+        "}
+    ],
+}
diff --git a/bin/tests/data/collapsible_let_in.nix b/bin/tests/data/collapsible_let_in.nix
deleted file mode 100644
index 7b41014..0000000
--- a/bin/tests/data/collapsible_let_in.nix
+++ /dev/null
@@ -1,9 +0,0 @@
-let
-  a = 2;
-  b = 3;
-in
-  let
-    c = 5;
-    d = 6;
-  in
-  a + b + c + d
diff --git a/bin/tests/main.rs b/bin/tests/main.rs
index 6f52bc7..bcb5056 100644
--- a/bin/tests/main.rs
+++ b/bin/tests/main.rs
@@ -44,7 +44,6 @@ fn test_cli(test_name: &str, file_path: &str, args: &[&str]) {
 }
 
 test_lint! {
-    collapsible_let_in,
     eta_reduction,
     useless_parens,
     empty_pattern,
diff --git a/bin/tests/snapshots/collapsible_let_in__fix_950e48dec6590cd20937e48006bff3f7c097bd07ec2da4a7b5dba488885061aa.snap b/bin/tests/snapshots/collapsible_let_in__fix_950e48dec6590cd20937e48006bff3f7c097bd07ec2da4a7b5dba488885061aa.snap
new file mode 100644
index 0000000..c9b1e6d
--- /dev/null
+++ b/bin/tests/snapshots/collapsible_let_in__fix_950e48dec6590cd20937e48006bff3f7c097bd07ec2da4a7b5dba488885061aa.snap
@@ -0,0 +1,17 @@
+---
+source: bin/tests/collapsible_let_in.rs
+expression: "\"let\\n  a = 2;\\n  b = 3;\\nin\\n  let\\n    c = 5;\\n    d = 6;\\n  in\\n  a + b + c + d\\n\""
+---
+--- <temp_file_path>
++++ <temp_file_path> [fixed]
+@@ -1,9 +1,8 @@
+ let
+   a = 2;
+   b = 3;
+-in
+-  let
++
+     c = 5;
+     d = 6;
+   in
+   a + b + c + d
diff --git a/bin/tests/snapshots/main__collapsible_let_in_lint.snap b/bin/tests/snapshots/collapsible_let_in__lint_950e48dec6590cd20937e48006bff3f7c097bd07ec2da4a7b5dba488885061aa.snap
similarity index 73%
rename from bin/tests/snapshots/main__collapsible_let_in_lint.snap
rename to bin/tests/snapshots/collapsible_let_in__lint_950e48dec6590cd20937e48006bff3f7c097bd07ec2da4a7b5dba488885061aa.snap
index 8ffc94a..7f136a6 100644
--- a/bin/tests/snapshots/main__collapsible_let_in_lint.snap
+++ b/bin/tests/snapshots/collapsible_let_in__lint_950e48dec6590cd20937e48006bff3f7c097bd07ec2da4a7b5dba488885061aa.snap
@@ -1,9 +1,9 @@
 ---
-source: bin/tests/main.rs
-expression: "&stdout"
+source: bin/tests/collapsible_let_in.rs
+expression: "\"let\\n  a = 2;\\n  b = 3;\\nin\\n  let\\n    c = 5;\\n    d = 6;\\n  in\\n  a + b + c + d\\n\""
 ---
 [W06] Warning: These let-in expressions are collapsible
-   ╭─[tests/data/collapsible_let_in.nix:1:1]
+   ╭─[<temp_file_path>:1:1]
    │
  1 │ ╭───▶ let
  5 │ │ ╭─▶   let
diff --git a/bin/tests/snapshots/main__collapsible_let_in_fix.snap b/bin/tests/snapshots/main__collapsible_let_in_fix.snap
deleted file mode 100644
index 5666713..0000000
--- a/bin/tests/snapshots/main__collapsible_let_in_fix.snap
+++ /dev/null
@@ -1,17 +0,0 @@
----
-source: bin/tests/main.rs
-expression: "&stdout"
----
---- tests/data/collapsible_let_in.nix
-+++ tests/data/collapsible_let_in.nix [fixed]
-@@ -1,9 +1,8 @@
- let
-   a = 2;
-   b = 3;
--in
--  let
-+
-     c = 5;
-     d = 6;
-   in
-   a + b + c + d