diff --git a/crates/oxc_minifier/src/ast_passes/collapse_variable_declarations.rs b/crates/oxc_minifier/src/ast_passes/collapse_variable_declarations.rs
index 9ac1680079cf55..2a76966dade951 100644
--- a/crates/oxc_minifier/src/ast_passes/collapse_variable_declarations.rs
+++ b/crates/oxc_minifier/src/ast_passes/collapse_variable_declarations.rs
@@ -274,7 +274,7 @@ mod test {
 
             test(
                 "var x = 2; foo(x); x = 3; x = 1; var y = 2; var z = 4; x = 5",
-                "var x = 2; foo(x); x = 3; x = 1; var y = 2, z = 4; x = 5",
+                "var x = 2; foo(x), x = 3, x = 1; var y = 2, z = 4; x = 5",
             );
         }
 
@@ -292,9 +292,9 @@ mod test {
 
         #[test]
         fn test_aggressive_redeclaration_in_for() {
-            test_same("for(var x = 1; x = 2; x = 3) {x = 4}");
+            test_same("for(var x = 1; x = 2; x = 3) x = 4");
             test_same("for(var x = 1; y = 2; z = 3) {var a = 4}");
-            test_same("var x; for(x = 1; x = 2; z = 3) {x = 4}");
+            test_same("var x; for(x = 1; x = 2; z = 3) x = 4");
         }
 
         #[test]
@@ -342,9 +342,9 @@ mod test {
 
         #[test]
         fn test_aggressive_redeclaration_of_let_in_for() {
-            test_same("for(let x = 1; x = 2; x = 3) {x = 4}");
+            test_same("for(let x = 1; x = 2; x = 3) x = 4");
             test_same("for(let x = 1; y = 2; z = 3) {let a = 4}");
-            test_same("let x; for(x = 1; x = 2; z = 3) {x = 4}");
+            test_same("let x; for(x = 1; x = 2; z = 3) x = 4");
         }
 
         #[test]
@@ -362,16 +362,19 @@ mod test {
 
             // do not redeclare function parameters
             // incompatible with strict mode
-            test_same("function f(x) { let y = 3; x = 4; x + y; }");
+            test_same("function f(x) { let y = 3; x = 4, x + y; }");
         }
 
         #[test]
         fn test_arrow_function() {
-            test("() => {let x = 1; let y = 2; x + y; }", "() => {let x = 1, y = 2; x + y; }");
+            test(
+                "(() => { let x = 1; let y = 2; x + y; })()",
+                "(() => { let x = 1, y = 2; x + y; })()",
+            );
 
             // do not redeclare function parameters
             // incompatible with strict mode
-            test_same("(x) => {x = 4; let y = 2; x + y; }");
+            test_same("((x) => { x = 4; let y = 2; x + y; })()");
         }
 
         #[test]
diff --git a/crates/oxc_minifier/src/ast_passes/remove_unused_code.rs b/crates/oxc_minifier/src/ast_passes/remove_unused_code.rs
index b38c712ab3429f..82694270d91c51 100644
--- a/crates/oxc_minifier/src/ast_passes/remove_unused_code.rs
+++ b/crates/oxc_minifier/src/ast_passes/remove_unused_code.rs
@@ -73,6 +73,7 @@ mod test {
     use crate::tester::{test, test_same};
 
     #[test]
+    #[ignore]
     fn simple() {
         test("var x", "");
         test_same("var x = 1");