diff --git a/crates/oxide_cli/src/bench/js_stress.rs b/crates/oxide_cli/src/bench/js_stress.rs
index 22227c3..5468d8c 100644
--- a/crates/oxide_cli/src/bench/js_stress.rs
+++ b/crates/oxide_cli/src/bench/js_stress.rs
@@ -46,7 +46,7 @@ pub fn run_js_stress_bench(config: &BenchConfig, kernel: &Arc<KernelCore>, pool:
 
     for path in &files {
         let test_name = path.file_stem().unwrap_or_default().to_string_lossy().to_string();
-        let mut js = match fs::read_to_string(path) {
+        let js = match fs::read_to_string(path) {
             Ok(s) => s,
             Err(e) => {
                 eprintln!("Failed to read {:?}: {}", path, e);
@@ -54,10 +54,6 @@ pub fn run_js_stress_bench(config: &BenchConfig, kernel: &Arc<KernelCore>, pool:
             }
         };
 
-        if config.iterations > 0 {
-            js = override_iterations(&js, config.iterations);
-        }
-
         let allocator = Allocator::default();
         let program = match oxide_parser::parse(&allocator, &js) {
             Ok(p) => p,
@@ -196,15 +192,3 @@ fn average_metrics(metrics: &[MetricCollection]) -> MetricCollection {
     }
 }
 
-fn override_iterations(js: &str, iters: u32) -> String {
-    js.lines()
-        .map(|line| {
-            if line.trim_start().starts_with("var ITERATIONS ") {
-                format!("var ITERATIONS = {};", iters)
-            } else {
-                line.to_string()
-            }
-        })
-        .collect::<Vec<_>>()
-        .join("\n")
-}
diff --git a/tests/stress/arith_ops.js b/tests/stress/arith_ops.js
new file mode 100644
index 0000000..9a83483
--- /dev/null
+++ b/tests/stress/arith_ops.js
@@ -0,0 +1,10 @@
+var ITERATIONS = 100000;
+
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  sum += i * 2 + 3 - 1 / 2;
+  sum += (i % 7) * 3;
+  sum += i & 255;
+  sum += i >> 2;
+}
+sum
diff --git a/tests/stress/array_filter.js b/tests/stress/array_filter.js
new file mode 100644
index 0000000..0b7d041
--- /dev/null
+++ b/tests/stress/array_filter.js
@@ -0,0 +1,12 @@
+var ITERATIONS = 2000;
+
+var base = [];
+for (var i = 0; i < 100; i++) {
+  base.push(i);
+}
+var sum = 0;
+for (var j = 0; j < ITERATIONS; j++) {
+  var out = base.filter(function (x) { return x % 2 === 0; });
+  sum += out.length;
+}
+sum
diff --git a/tests/stress/array_for_each.js b/tests/stress/array_for_each.js
new file mode 100644
index 0000000..a315b62
--- /dev/null
+++ b/tests/stress/array_for_each.js
@@ -0,0 +1,11 @@
+var ITERATIONS = 2000;
+
+var base = [];
+for (var i = 0; i < 100; i++) {
+  base.push(i);
+}
+var sum = 0;
+for (var j = 0; j < ITERATIONS; j++) {
+  base.forEach(function (x) { sum += x; });
+}
+sum
diff --git a/tests/stress/array_index_get.js b/tests/stress/array_index_get.js
new file mode 100644
index 0000000..0d7ef7b
--- /dev/null
+++ b/tests/stress/array_index_get.js
@@ -0,0 +1,11 @@
+var ITERATIONS = 100000;
+
+var arr = [];
+for (var i = 0; i < 1000; i++) {
+  arr.push(i);
+}
+var sum = 0;
+for (var j = 0; j < ITERATIONS; j++) {
+  sum += arr[500];
+}
+sum
diff --git a/tests/stress/array_index_set.js b/tests/stress/array_index_set.js
new file mode 100644
index 0000000..d03d738
--- /dev/null
+++ b/tests/stress/array_index_set.js
@@ -0,0 +1,10 @@
+var ITERATIONS = 100000;
+
+var arr = [];
+for (var i = 0; i < 1000; i++) {
+  arr.push(0);
+}
+for (var j = 0; j < ITERATIONS; j++) {
+  arr[500] = j;
+}
+arr[500]
diff --git a/tests/stress/array_join.js b/tests/stress/array_join.js
new file mode 100644
index 0000000..5291d69
--- /dev/null
+++ b/tests/stress/array_join.js
@@ -0,0 +1,12 @@
+var ITERATIONS = 50000;
+
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  var arr = [];
+  for (var j = 0; j < 10; j++) {
+    arr.push(j);
+  }
+  var joined = arr.join(",");
+  sum += joined.length;
+}
+sum
diff --git a/tests/stress/coercion.js b/tests/stress/array_literal.js
similarity index 65%
rename from tests/stress/coercion.js
rename to tests/stress/array_literal.js
index 494e082..3af98cf 100644
--- a/tests/stress/coercion.js
+++ b/tests/stress/array_literal.js
@@ -2,6 +2,7 @@ var ITERATIONS = 50000;
 
 var sum = 0;
 for (var i = 0; i < ITERATIONS; i++) {
-  sum += (+"42") + (+"3.14") + (+"0");
+  var arr = [1, 2, 3];
+  sum += arr.length;
 }
 sum
diff --git a/tests/stress/array_map.js b/tests/stress/array_map.js
new file mode 100644
index 0000000..02a87ed
--- /dev/null
+++ b/tests/stress/array_map.js
@@ -0,0 +1,12 @@
+var ITERATIONS = 2000;
+
+var base = [];
+for (var i = 0; i < 100; i++) {
+  base.push(i);
+}
+var sum = 0;
+for (var j = 0; j < ITERATIONS; j++) {
+  var out = base.map(function (x) { return x + 1; });
+  sum += out[0];
+}
+sum
diff --git a/tests/stress/array_push_pop.js b/tests/stress/array_push_pop.js
new file mode 100644
index 0000000..18ccac7
--- /dev/null
+++ b/tests/stress/array_push_pop.js
@@ -0,0 +1,12 @@
+var ITERATIONS = 50000;
+
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  var arr = [];
+  for (var j = 0; j < 10; j++) {
+    arr.push(j);
+  }
+  var popped = arr.pop();
+  sum += popped;
+}
+sum
diff --git a/tests/stress/array_reduce.js b/tests/stress/array_reduce.js
new file mode 100644
index 0000000..361fc66
--- /dev/null
+++ b/tests/stress/array_reduce.js
@@ -0,0 +1,12 @@
+var ITERATIONS = 2000;
+
+var base = [];
+for (var i = 0; i < 100; i++) {
+  base.push(i);
+}
+var sum = 0;
+for (var j = 0; j < ITERATIONS; j++) {
+  var out = base.reduce(function (acc, x) { return acc + x; }, 0);
+  sum += out;
+}
+sum
diff --git a/tests/stress/array_slice.js b/tests/stress/array_slice.js
new file mode 100644
index 0000000..2f0c9dc
--- /dev/null
+++ b/tests/stress/array_slice.js
@@ -0,0 +1,12 @@
+var ITERATIONS = 3000;
+
+var base = [];
+for (var i = 0; i < 100; i++) {
+  base.push(i);
+}
+var sum = 0;
+for (var j = 0; j < ITERATIONS; j++) {
+  var out = base.slice();
+  sum += out.length;
+}
+sum
diff --git a/tests/stress/array_sort.js b/tests/stress/array_sort.js
new file mode 100644
index 0000000..4bd46a8
--- /dev/null
+++ b/tests/stress/array_sort.js
@@ -0,0 +1,13 @@
+var ITERATIONS = 500;
+
+var base = [];
+for (var i = 0; i < 100; i++) {
+  base.push(100 - i);
+}
+var sum = 0;
+for (var j = 0; j < ITERATIONS; j++) {
+  var out = base.slice();
+  out.sort(function (a, b) { return a - b; });
+  sum += out[0];
+}
+sum
diff --git a/tests/stress/branch_if.js b/tests/stress/branch_if.js
new file mode 100644
index 0000000..652e909
--- /dev/null
+++ b/tests/stress/branch_if.js
@@ -0,0 +1,13 @@
+var ITERATIONS = 100000;
+
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  if (i % 2 === 0) {
+    sum += 1;
+  } else if (i % 3 === 0) {
+    sum += 2;
+  } else {
+    sum += 3;
+  }
+}
+sum
diff --git a/tests/stress/branch_switch.js b/tests/stress/branch_switch.js
new file mode 100644
index 0000000..3a6f9d6
--- /dev/null
+++ b/tests/stress/branch_switch.js
@@ -0,0 +1,12 @@
+var ITERATIONS = 100000;
+
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  switch (i % 4) {
+    case 0: sum += 0; break;
+    case 1: sum += 1; break;
+    case 2: sum += 2; break;
+    default: sum += 3; break;
+  }
+}
+sum
diff --git a/tests/stress/call.js b/tests/stress/call.js
deleted file mode 100644
index 8002001..0000000
--- a/tests/stress/call.js
+++ /dev/null
@@ -1,7 +0,0 @@
-var ITERATIONS = 200;
-
-function sumTo(n) {
-  if (n <= 0) return 0;
-  return n + sumTo(n - 1);
-}
-sumTo(ITERATIONS)
diff --git a/tests/stress/call_args.js b/tests/stress/call_args.js
new file mode 100644
index 0000000..76edd34
--- /dev/null
+++ b/tests/stress/call_args.js
@@ -0,0 +1,10 @@
+var ITERATIONS = 20000;
+
+function add(a, b, c, d) {
+  return a + b + c + d;
+}
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  sum += add(i, i + 1, i + 2, i + 3);
+}
+sum
diff --git a/tests/stress/call_closure.js b/tests/stress/call_closure.js
new file mode 100644
index 0000000..f9a8cfc
--- /dev/null
+++ b/tests/stress/call_closure.js
@@ -0,0 +1,14 @@
+var ITERATIONS = 20000;
+
+function outer() {
+  var x = 1;
+  return function (n) {
+    return x + n;
+  };
+}
+var inner = outer();
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  sum += inner(i);
+}
+sum
diff --git a/tests/stress/call_method.js b/tests/stress/call_method.js
new file mode 100644
index 0000000..70378b2
--- /dev/null
+++ b/tests/stress/call_method.js
@@ -0,0 +1,8 @@
+var ITERATIONS = 20000;
+
+var obj = { value: 1, add: function (n) { return this.value + n; } };
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  sum += obj.add(i);
+}
+sum
diff --git a/tests/stress/call_new_proto.js b/tests/stress/call_new_proto.js
new file mode 100644
index 0000000..9abfdb5
--- /dev/null
+++ b/tests/stress/call_new_proto.js
@@ -0,0 +1,14 @@
+var ITERATIONS = 20000;
+
+function Animal(name) {
+  this.name = name;
+}
+Animal.prototype.getName = function () {
+  return this.name;
+};
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  var a = new Animal("x");
+  sum += a.getName().length;
+}
+sum
diff --git a/tests/stress/call_recursion.js b/tests/stress/call_recursion.js
new file mode 100644
index 0000000..51a0d11
--- /dev/null
+++ b/tests/stress/call_recursion.js
@@ -0,0 +1,11 @@
+var ITERATIONS = 200;
+
+function fib(n) {
+  if (n <= 1) return n;
+  return fib(n - 1) + fib(n - 2);
+}
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  sum += fib(15) % 10;
+}
+sum
diff --git a/tests/stress/call_this.js b/tests/stress/call_this.js
new file mode 100644
index 0000000..28788cc
--- /dev/null
+++ b/tests/stress/call_this.js
@@ -0,0 +1,13 @@
+var ITERATIONS = 20000;
+
+var obj = {
+  value: 10,
+  getValue: function () { return this.value; },
+  setValue: function (v) { this.value = v; return this; }
+};
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  obj.setValue(i);
+  sum += obj.getValue();
+}
+sum
diff --git a/tests/stress/cmp_ops.js b/tests/stress/cmp_ops.js
new file mode 100644
index 0000000..61172fd
--- /dev/null
+++ b/tests/stress/cmp_ops.js
@@ -0,0 +1,13 @@
+var ITERATIONS = 100000;
+
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  var n = i & 1;
+  sum += n == 0;
+  sum += n != 1;
+  sum += n === 0;
+  sum += n !== 1;
+  sum += n < 2;
+  sum += n >= 0;
+}
+sum
diff --git a/tests/stress/coercion_boolean.js b/tests/stress/coercion_boolean.js
new file mode 100644
index 0000000..46ba3de
--- /dev/null
+++ b/tests/stress/coercion_boolean.js
@@ -0,0 +1,9 @@
+var ITERATIONS = 100000;
+
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  sum += (i % 2 === 0) ? true : false;
+  sum += i === 0 ? 0 : 1;
+  sum += i > 0 ? 1 : 0;
+}
+sum
diff --git a/tests/stress/coercion_concat.js b/tests/stress/coercion_concat.js
new file mode 100644
index 0000000..4882170
--- /dev/null
+++ b/tests/stress/coercion_concat.js
@@ -0,0 +1,7 @@
+var ITERATIONS = 100000;
+
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  sum += "42" + i;
+}
+sum
diff --git a/tests/stress/coercion_nullish.js b/tests/stress/coercion_nullish.js
new file mode 100644
index 0000000..486ac07
--- /dev/null
+++ b/tests/stress/coercion_nullish.js
@@ -0,0 +1,11 @@
+var ITERATIONS = 100000;
+
+var obj = { value: 5 };
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  sum += obj.value ?? 0;
+  sum += obj.missing ?? 42;
+  var x = (i % 2 === 0) ? 1 : null;
+  sum += x ?? 7;
+}
+sum
diff --git a/tests/stress/coercion_tonumber.js b/tests/stress/coercion_tonumber.js
new file mode 100644
index 0000000..284ebeb
--- /dev/null
+++ b/tests/stress/coercion_tonumber.js
@@ -0,0 +1,7 @@
+var ITERATIONS = 100000;
+
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  sum += +"42" + +"3.14" + +"0" + +"0.5" + +"1e3";
+}
+sum
diff --git a/tests/stress/coercion_toprimitive.js b/tests/stress/coercion_toprimitive.js
new file mode 100644
index 0000000..feffa0b
--- /dev/null
+++ b/tests/stress/coercion_toprimitive.js
@@ -0,0 +1,8 @@
+var ITERATIONS = 20000;
+
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  var obj = { valueOf: function () { return 42; }, toString: function () { return "42"; } };
+  sum += obj + 1;
+}
+sum
diff --git a/tests/stress/coercion_tostring.js b/tests/stress/coercion_tostring.js
new file mode 100644
index 0000000..4424baa
--- /dev/null
+++ b/tests/stress/coercion_tostring.js
@@ -0,0 +1,7 @@
+var ITERATIONS = 100000;
+
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  sum += String(42) + String(3.14) + String(0) + String(true) + String(null);
+}
+sum
diff --git a/tests/stress/gc_array.js b/tests/stress/gc_array.js
new file mode 100644
index 0000000..4ccbc3e
--- /dev/null
+++ b/tests/stress/gc_array.js
@@ -0,0 +1,11 @@
+var ITERATIONS = 5000;
+
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  var arr = [];
+  for (var j = 0; j < 50; j++) {
+    arr.push(j);
+  }
+  sum += arr.length;
+}
+sum
diff --git a/tests/stress/array.js b/tests/stress/gc_object.js
similarity index 52%
rename from tests/stress/array.js
rename to tests/stress/gc_object.js
index d626617..fcced18 100644
--- a/tests/stress/array.js
+++ b/tests/stress/gc_object.js
@@ -1,11 +1,8 @@
 var ITERATIONS = 50000;
 
-var arr = [];
-for (var i = 0; i < ITERATIONS; i++) {
-  arr.push(i);
-}
 var sum = 0;
-while (arr.length > 0) {
-  sum += arr.pop();
+for (var i = 0; i < ITERATIONS; i++) {
+  var obj = { a: i, b: i * 2 };
+  sum += obj.a + obj.b;
 }
 sum
diff --git a/tests/stress/gc_string.js b/tests/stress/gc_string.js
new file mode 100644
index 0000000..c3ad358
--- /dev/null
+++ b/tests/stress/gc_string.js
@@ -0,0 +1,8 @@
+var ITERATIONS = 20000;
+
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  var s = "str" + i;
+  sum += s.length;
+}
+sum
diff --git a/tests/stress/ic_polymorphic.js b/tests/stress/ic_polymorphic.js
new file mode 100644
index 0000000..089106f
--- /dev/null
+++ b/tests/stress/ic_polymorphic.js
@@ -0,0 +1,11 @@
+var ITERATIONS = 100000;
+
+var a = { x: 1, y: 2, z: 3 };
+var b = { x: 4, y: 5, z: 6 };
+var c = { x: 7, y: 8, z: 9 };
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  var t = (i % 3 === 0) ? a : (i % 3 === 1) ? b : c;
+  sum += t.x + t.y + t.z;
+}
+sum
diff --git a/tests/stress/loop_do_while.js b/tests/stress/loop_do_while.js
new file mode 100644
index 0000000..2128396
--- /dev/null
+++ b/tests/stress/loop_do_while.js
@@ -0,0 +1,9 @@
+var ITERATIONS = 200000;
+
+var sum = 0;
+var i = 0;
+do {
+  sum += i;
+  i++;
+} while (i < ITERATIONS);
+sum
diff --git a/tests/stress/loop_for.js b/tests/stress/loop_for.js
new file mode 100644
index 0000000..2fc7005
--- /dev/null
+++ b/tests/stress/loop_for.js
@@ -0,0 +1,7 @@
+var ITERATIONS = 1000000;
+
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  sum += i;
+}
+sum
diff --git a/tests/stress/loop_for_in.js b/tests/stress/loop_for_in.js
new file mode 100644
index 0000000..55f31b6
--- /dev/null
+++ b/tests/stress/loop_for_in.js
@@ -0,0 +1,13 @@
+var ITERATIONS = 5000;
+
+var obj = {};
+for (var i = 0; i < 100; i++) {
+  obj["k" + i] = i;
+}
+var sum = 0;
+for (var j = 0; j < ITERATIONS; j++) {
+  for (var k in obj) {
+    sum += obj[k];
+  }
+}
+sum
diff --git a/tests/stress/loop_for_of.js b/tests/stress/loop_for_of.js
new file mode 100644
index 0000000..45608c5
--- /dev/null
+++ b/tests/stress/loop_for_of.js
@@ -0,0 +1,13 @@
+var ITERATIONS = 3000;
+
+var arr = [];
+for (var i = 0; i < 100; i++) {
+  arr.push(i);
+}
+var sum = 0;
+for (var j = 0; j < ITERATIONS; j++) {
+  for (var k of arr) {
+    sum += k;
+  }
+}
+sum
diff --git a/tests/stress/loop_for_of_string.js b/tests/stress/loop_for_of_string.js
new file mode 100644
index 0000000..7b96135
--- /dev/null
+++ b/tests/stress/loop_for_of_string.js
@@ -0,0 +1,13 @@
+var ITERATIONS = 1500;
+
+var s = "";
+for (var i = 0; i < 50; i++) {
+  s += "ab";
+}
+var sum = 0;
+for (var j = 0; j < ITERATIONS; j++) {
+  for (var k of s) {
+    sum += k.charCodeAt(0);
+  }
+}
+sum
diff --git a/tests/stress/loop_index.js b/tests/stress/loop_index.js
new file mode 100644
index 0000000..91bc7c4
--- /dev/null
+++ b/tests/stress/loop_index.js
@@ -0,0 +1,13 @@
+var ITERATIONS = 3000;
+
+var arr = [];
+for (var i = 0; i < 100; i++) {
+  arr.push(i);
+}
+var sum = 0;
+for (var j = 0; j < ITERATIONS; j++) {
+  for (var k = 0; k < arr.length; k++) {
+    sum += arr[k];
+  }
+}
+sum
diff --git a/tests/stress/loop_while.js b/tests/stress/loop_while.js
new file mode 100644
index 0000000..c26af31
--- /dev/null
+++ b/tests/stress/loop_while.js
@@ -0,0 +1,9 @@
+var ITERATIONS = 1000000;
+
+var sum = 0;
+var i = 0;
+while (i < ITERATIONS) {
+  sum += i;
+  i++;
+}
+sum
diff --git a/tests/stress/loop_while_index.js b/tests/stress/loop_while_index.js
new file mode 100644
index 0000000..a51253c
--- /dev/null
+++ b/tests/stress/loop_while_index.js
@@ -0,0 +1,15 @@
+var ITERATIONS = 3000;
+
+var arr = [];
+for (var i = 0; i < 100; i++) {
+  arr.push(i);
+}
+var sum = 0;
+for (var j = 0; j < ITERATIONS; j++) {
+  var k = 0;
+  while (k < arr.length) {
+    sum += arr[k];
+    k++;
+  }
+}
+sum
diff --git a/tests/stress/map_ops.js b/tests/stress/map_ops.js
new file mode 100644
index 0000000..f31ee4c
--- /dev/null
+++ b/tests/stress/map_ops.js
@@ -0,0 +1,11 @@
+var ITERATIONS = 50000;
+
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  var m = new Map();
+  for (var j = 0; j < 10; j++) {
+    m.set(j, j * 2);
+  }
+  sum += m.get(5);
+}
+sum
diff --git a/tests/stress/math_ops.js b/tests/stress/math_ops.js
new file mode 100644
index 0000000..d7e4909
--- /dev/null
+++ b/tests/stress/math_ops.js
@@ -0,0 +1,10 @@
+var ITERATIONS = 100000;
+
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  sum += Math.floor(i * 1.5);
+  sum += Math.abs(i - 50000);
+  sum += Math.max(i, 0);
+  sum += Math.min(i, 999999);
+}
+sum
diff --git a/tests/stress/object_keys.js b/tests/stress/object_keys.js
new file mode 100644
index 0000000..d51d5c3
--- /dev/null
+++ b/tests/stress/object_keys.js
@@ -0,0 +1,11 @@
+var ITERATIONS = 10000;
+
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  var obj = {};
+  for (var j = 0; j < 20; j++) {
+    obj["k" + j] = j;
+  }
+  sum += Object.keys(obj).length;
+}
+sum
diff --git a/tests/stress/prop_access.js b/tests/stress/prop_access.js
new file mode 100644
index 0000000..a1942c6
--- /dev/null
+++ b/tests/stress/prop_access.js
@@ -0,0 +1,8 @@
+var ITERATIONS = 100000;
+
+var obj = { a: 1, b: 2, c: 3, d: 4 };
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  sum += obj.a + obj.b + obj.c + obj.d;
+}
+sum
diff --git a/tests/stress/prop_bracket.js b/tests/stress/prop_bracket.js
new file mode 100644
index 0000000..6471166
--- /dev/null
+++ b/tests/stress/prop_bracket.js
@@ -0,0 +1,9 @@
+var ITERATIONS = 100000;
+
+var obj = { a: 1, b: 2, c: 3 };
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  var x = obj["a"];
+  sum += x;
+}
+sum
diff --git a/tests/stress/prop_delete.js b/tests/stress/prop_delete.js
new file mode 100644
index 0000000..7122f9a
--- /dev/null
+++ b/tests/stress/prop_delete.js
@@ -0,0 +1,10 @@
+var ITERATIONS = 20000;
+
+var obj = { a: 1, b: 2, c: 3 };
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  delete obj.a;
+  obj.a = i;
+  sum += obj.a;
+}
+sum
diff --git a/tests/stress/prop_dynamic.js b/tests/stress/prop_dynamic.js
new file mode 100644
index 0000000..a720b40
--- /dev/null
+++ b/tests/stress/prop_dynamic.js
@@ -0,0 +1,9 @@
+var ITERATIONS = 50000;
+
+var obj = {};
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  obj["key"] = i;
+  sum += obj["key"];
+}
+sum
diff --git a/tests/stress/prop_nested.js b/tests/stress/prop_nested.js
new file mode 100644
index 0000000..ea2f650
--- /dev/null
+++ b/tests/stress/prop_nested.js
@@ -0,0 +1,8 @@
+var ITERATIONS = 50000;
+
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  var obj = { nested: { deep: { value: i } } };
+  sum += obj.nested.deep.value;
+}
+sum
diff --git a/tests/stress/gc.js b/tests/stress/prop_set.js
similarity index 65%
rename from tests/stress/gc.js
rename to tests/stress/prop_set.js
index 230271d..732b2be 100644
--- a/tests/stress/gc.js
+++ b/tests/stress/prop_set.js
@@ -1,8 +1,10 @@
 var ITERATIONS = 100000;
 
+var obj = { x: 0, y: 0 };
 var sum = 0;
 for (var i = 0; i < ITERATIONS; i++) {
-  var obj = { x: i, y: i * 2, nested: { a: 1, b: 2 } };
+  obj.x = i;
+  obj.y = i * 2;
   sum += obj.x + obj.y;
 }
 sum
diff --git a/tests/stress/set_ops.js b/tests/stress/set_ops.js
new file mode 100644
index 0000000..11f1984
--- /dev/null
+++ b/tests/stress/set_ops.js
@@ -0,0 +1,11 @@
+var ITERATIONS = 50000;
+
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  var s = new Set();
+  for (var j = 0; j < 10; j++) {
+    s.add(j);
+  }
+  sum += s.size;
+}
+sum
diff --git a/tests/stress/string.js b/tests/stress/string.js
deleted file mode 100644
index 46f0cd7..0000000
--- a/tests/stress/string.js
+++ /dev/null
@@ -1,7 +0,0 @@
-var ITERATIONS = 10000;
-
-var s = "";
-for (var i = 0; i < ITERATIONS; i++) {
-  s += "a" + i;
-}
-s.length
diff --git a/tests/stress/string_build.js b/tests/stress/string_build.js
new file mode 100644
index 0000000..4f372d6
--- /dev/null
+++ b/tests/stress/string_build.js
@@ -0,0 +1,11 @@
+var ITERATIONS = 20000;
+
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  var s = "";
+  for (var j = 0; j < 50; j++) {
+    s += j;
+  }
+  sum += s.length;
+}
+sum
diff --git a/tests/stress/string_case.js b/tests/stress/string_case.js
new file mode 100644
index 0000000..e440731
--- /dev/null
+++ b/tests/stress/string_case.js
@@ -0,0 +1,8 @@
+var ITERATIONS = 50000;
+
+var s = "Mixed CASE String with UPPER and lower parts";
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  sum += s.toUpperCase().length + s.toLowerCase().length;
+}
+sum
diff --git a/tests/stress/string_char.js b/tests/stress/string_char.js
new file mode 100644
index 0000000..83c1828
--- /dev/null
+++ b/tests/stress/string_char.js
@@ -0,0 +1,9 @@
+var ITERATIONS = 100000;
+
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  var s = "abc";
+  sum += s.charAt(1) === "b";
+  sum += s.charCodeAt(0);
+}
+sum
diff --git a/tests/stress/string_concat.js b/tests/stress/string_concat.js
new file mode 100644
index 0000000..e89b631
--- /dev/null
+++ b/tests/stress/string_concat.js
@@ -0,0 +1,11 @@
+var ITERATIONS = 50000;
+
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  var a = "1";
+  var b = "2";
+  var c = "3";
+  var d = a + b + c + a + b + c;
+  sum += d.length;
+}
+sum
diff --git a/tests/stress/string_indexof.js b/tests/stress/string_indexof.js
new file mode 100644
index 0000000..70327d6
--- /dev/null
+++ b/tests/stress/string_indexof.js
@@ -0,0 +1,8 @@
+var ITERATIONS = 50000;
+
+var s = "The quick brown fox jumps over the lazy dog. 0123456789 abcdefghijklmnopqrstuvwxyz";
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  sum += s.indexOf("fox");
+}
+sum
diff --git a/tests/stress/string_replace.js b/tests/stress/string_replace.js
new file mode 100644
index 0000000..04b1b32
--- /dev/null
+++ b/tests/stress/string_replace.js
@@ -0,0 +1,9 @@
+var ITERATIONS = 20000;
+
+var s = "hello world, hello engine, hello rust";
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  var r = s.replace("hello", "hi");
+  sum += r.length;
+}
+sum
diff --git a/tests/stress/string_split.js b/tests/stress/string_split.js
new file mode 100644
index 0000000..1b34e28
--- /dev/null
+++ b/tests/stress/string_split.js
@@ -0,0 +1,9 @@
+var ITERATIONS = 20000;
+
+var s = "a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z";
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  var parts = s.split(",");
+  sum += parts.length;
+}
+sum
diff --git a/tests/stress/string_substring.js b/tests/stress/string_substring.js
new file mode 100644
index 0000000..e4ba389
--- /dev/null
+++ b/tests/stress/string_substring.js
@@ -0,0 +1,9 @@
+var ITERATIONS = 50000;
+
+var s = "The quick brown fox jumps over the lazy dog. 0123456789 abcdefghijklmnopqrstuvwxyz";
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  var sub = s.substring(4, 15);
+  sum += sub.length;
+}
+sum
diff --git a/tests/stress/string_trim.js b/tests/stress/string_trim.js
new file mode 100644
index 0000000..c9ed9a8
--- /dev/null
+++ b/tests/stress/string_trim.js
@@ -0,0 +1,8 @@
+var ITERATIONS = 20000;
+
+var s = "hello world this is a string that gets trimmed  ";
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  sum += s.trim().length;
+}
+sum
diff --git a/tests/stress/try_catch_ok.js b/tests/stress/try_catch_ok.js
new file mode 100644
index 0000000..55f67f2
--- /dev/null
+++ b/tests/stress/try_catch_ok.js
@@ -0,0 +1,11 @@
+var ITERATIONS = 50000;
+
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  try {
+    sum += 1;
+  } catch (e) {
+    sum += 2;
+  }
+}
+sum
diff --git a/tests/stress/try_catch_throw.js b/tests/stress/try_catch_throw.js
new file mode 100644
index 0000000..2ceffec
--- /dev/null
+++ b/tests/stress/try_catch_throw.js
@@ -0,0 +1,11 @@
+var ITERATIONS = 20000;
+
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  try {
+    throw new Error("boom");
+  } catch (e) {
+    sum += e.message.length;
+  }
+}
+sum
diff --git a/tests/stress/typeof_ops.js b/tests/stress/typeof_ops.js
new file mode 100644
index 0000000..b0b489a
--- /dev/null
+++ b/tests/stress/typeof_ops.js
@@ -0,0 +1,10 @@
+var ITERATIONS = 100000;
+
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  sum += typeof i;
+  sum += typeof "str";
+  sum += typeof null;
+  sum += typeof {}.a;
+}
+sum
diff --git a/tests/stress/unary_ops.js b/tests/stress/unary_ops.js
new file mode 100644
index 0000000..fd41a33
--- /dev/null
+++ b/tests/stress/unary_ops.js
@@ -0,0 +1,10 @@
+var ITERATIONS = 100000;
+
+var sum = 0;
+for (var i = 0; i < ITERATIONS; i++) {
+  sum += -i;
+  sum += ~i;
+  sum += !i;
+  sum += !(i > 0);
+}
+sum