4 files changed, 139 insertions, 0 deletions
diff --git a/tests/testdata/benches/response_string_perf.js b/tests/testdata/benches/response_string_perf.js
new file mode 100644
index 000000000..f55376c77
--- /dev/null
+++ b/tests/testdata/benches/response_string_perf.js
@@ -0,0 +1,34 @@
+const mixed = "@Ā๐😀";
+
+function generateRandom(bytes) {
+  let result = "";
+  let i = 0;
+  while (i < bytes) {
+    const toAdd = Math.floor(Math.random() * Math.min(4, bytes - i));
+    switch (toAdd) {
+      case 0:
+        result += mixed[0];
+        i++;
+        break;
+      case 1:
+        result += mixed[1];
+        i++;
+        break;
+      case 2:
+        result += mixed[2];
+        i++;
+        break;
+      case 3:
+        result += mixed[3];
+        result += mixed[4];
+        i += 2;
+        break;
+    }
+  }
+  return result;
+}
+
+const randomData = generateRandom(1024);
+for (let i = 0; i < 10_000; i++) {
+  new Response(randomData);
+}
diff --git a/tests/testdata/benches/text_decoder_perf.js b/tests/testdata/benches/text_decoder_perf.js
new file mode 100644
index 000000000..2e52b1f8b
--- /dev/null
+++ b/tests/testdata/benches/text_decoder_perf.js
@@ -0,0 +1,38 @@
+const mixed = new TextEncoder().encode("@Ā๐😀");
+
+function generateRandom(bytes) {
+  const result = new Uint8Array(bytes);
+  let i = 0;
+  while (i < bytes) {
+    const toAdd = Math.floor(Math.random() * Math.min(4, bytes - i));
+    switch (toAdd) {
+      case 0:
+        result[i] = mixed[0];
+        i++;
+        break;
+      case 1:
+        result[i] = mixed[1];
+        result[i + 1] = mixed[2];
+        i += 2;
+        break;
+      case 2:
+        result[i] = mixed[3];
+        result[i + 1] = mixed[4];
+        result[i + 2] = mixed[5];
+        i += 3;
+        break;
+      case 3:
+        result[i] = mixed[6];
+        result[i + 1] = mixed[7];
+        result[i + 2] = mixed[8];
+        result[i + 3] = mixed[9];
+        i += 4;
+        break;
+    }
+  }
+  return result;
+}
+
+const randomData = generateRandom(1024);
+const decoder = new TextDecoder();
+for (let i = 0; i < 10_000; i++) decoder.decode(randomData);
diff --git a/tests/testdata/benches/text_encoder_into_perf.js b/tests/testdata/benches/text_encoder_into_perf.js
new file mode 100644
index 000000000..8d60e9f00
--- /dev/null
+++ b/tests/testdata/benches/text_encoder_into_perf.js
@@ -0,0 +1,34 @@
+const mixed = "@Ā๐😀";
+
+function generateRandom(bytes) {
+  let result = "";
+  let i = 0;
+  while (i < bytes) {
+    const toAdd = Math.floor(Math.random() * Math.min(4, bytes - i));
+    switch (toAdd) {
+      case 0:
+        result += mixed[0];
+        i++;
+        break;
+      case 1:
+        result += mixed[1];
+        i++;
+        break;
+      case 2:
+        result += mixed[2];
+        i++;
+        break;
+      case 3:
+        result += mixed[3];
+        result += mixed[4];
+        i += 2;
+        break;
+    }
+  }
+  return result;
+}
+
+const randomData = generateRandom(1024);
+const encoder = new TextEncoder();
+const targetBuffer = new Uint8Array(randomData.length * 4);
+for (let i = 0; i < 10_000; i++) encoder.encodeInto(randomData, targetBuffer);
diff --git a/tests/testdata/benches/text_encoder_perf.js b/tests/testdata/benches/text_encoder_perf.js
new file mode 100644
index 000000000..6f61f019e
--- /dev/null
+++ b/tests/testdata/benches/text_encoder_perf.js
@@ -0,0 +1,33 @@
+const mixed = "@Ā๐😀";
+
+function generateRandom(bytes) {
+  let result = "";
+  let i = 0;
+  while (i < bytes) {
+    const toAdd = Math.floor(Math.random() * Math.min(4, bytes - i));
+    switch (toAdd) {
+      case 0:
+        result += mixed[0];
+        i++;
+        break;
+      case 1:
+        result += mixed[1];
+        i++;
+        break;
+      case 2:
+        result += mixed[2];
+        i++;
+        break;
+      case 3:
+        result += mixed[3];
+        result += mixed[4];
+        i += 2;
+        break;
+    }
+  }
+  return result;
+}
+
+const randomData = generateRandom(1024);
+const encoder = new TextEncoder();
+for (let i = 0; i < 10_000; i++) encoder.encode(randomData);