From 5e7d9047b621a56afba4d9ce1da38648bd545d85 Mon Sep 17 00:00:00 2001
From: Steven <steven@ceriously.com>
Date: Sun, 9 Nov 2025 15:52:32 -0500
Subject: [PATCH] [import-bytes] add initial tests for import bytes proposal

---
 features.txt                                  |   4 +
 .../import-bytes/bytes-from-empty-FIXTURE.bin |   0
 .../import/import-bytes/bytes-from-empty.js   |  27 +++++
 .../import-bytes/bytes-from-png-FIXTURE.png   | Bin 0 -> 67 bytes
 .../import/import-bytes/bytes-from-png.js     |  98 ++++++++++++++++++
 .../import-bytes/bytes-from-txt-FIXTURE.txt   |   1 +
 .../import/import-bytes/bytes-from-txt.js     |  44 ++++++++
 7 files changed, 174 insertions(+)
 create mode 100644 test/language/import/import-bytes/bytes-from-empty-FIXTURE.bin
 create mode 100644 test/language/import/import-bytes/bytes-from-empty.js
 create mode 100644 test/language/import/import-bytes/bytes-from-png-FIXTURE.png
 create mode 100644 test/language/import/import-bytes/bytes-from-png.js
 create mode 100644 test/language/import/import-bytes/bytes-from-txt-FIXTURE.txt
 create mode 100644 test/language/import/import-bytes/bytes-from-txt.js

diff --git a/features.txt b/features.txt
index f48d5412c32..d24e6e33290 100644
--- a/features.txt
+++ b/features.txt
@@ -84,6 +84,10 @@ upsert
 # https://github.com/tc39/proposal-immutable-arraybuffer
 immutable-arraybuffer
 
+# Import Bytes
+# https://github.com/tc39/proposal-import-bytes
+import-bytes
+
 # Non-extensible Applies to Private
 # https://github.com/tc39/proposal-nonextensible-applies-to-private
 nonextensible-applies-to-private
diff --git a/test/language/import/import-bytes/bytes-from-empty-FIXTURE.bin b/test/language/import/import-bytes/bytes-from-empty-FIXTURE.bin
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/test/language/import/import-bytes/bytes-from-empty.js b/test/language/import/import-bytes/bytes-from-empty.js
new file mode 100644
index 00000000000..61c61438991
--- /dev/null
+++ b/test/language/import/import-bytes/bytes-from-empty.js
@@ -0,0 +1,27 @@
+// Copyright (C) 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-create-bytes-module
+description: Creates bytes module from txt file
+flags: [module]
+features: [import-attributes, immutable-arraybuffer, import-bytes]
+includes: [compareArray.js]
+---*/
+
+import value from './bytes-from-empty-FIXTURE.bin' with { type: 'bytes' };
+
+assert(value instanceof Uint8Array);
+assert(value.buffer instanceof ArrayBuffer);
+
+assert.sameValue(value.length, 0);
+assert.sameValue(value.buffer.byteLength, 0);
+
+assert.compareArray(Array.from(value), []);
+
+assert.throws(TypeError, function() {
+  value.buffer.resize(0);
+});
+
+assert.throws(TypeError, function() {
+  value.buffer.transfer();
+});
diff --git a/test/language/import/import-bytes/bytes-from-png-FIXTURE.png b/test/language/import/import-bytes/bytes-from-png-FIXTURE.png
new file mode 100644
index 0000000000000000000000000000000000000000..252d9502d8573d033e633f5e377d81bebf8afd36
GIT binary patch
literal 67
zcmeAS@N?(olHy`uVBq!ia0vp^j35jm7|ip2ssJf2PZ!6K3dZCFAe)JSvAC2`0?1<U
MboFyt=akR{07$wE0RR91

literal 0
HcmV?d00001

diff --git a/test/language/import/import-bytes/bytes-from-png.js b/test/language/import/import-bytes/bytes-from-png.js
new file mode 100644
index 00000000000..d9ef9890a58
--- /dev/null
+++ b/test/language/import/import-bytes/bytes-from-png.js
@@ -0,0 +1,98 @@
+// Copyright (C) 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-create-bytes-module
+description: Creates bytes module from png file
+flags: [module]
+features: [import-attributes, immutable-arraybuffer, import-bytes]
+includes: [compareArray.js]
+---*/
+
+import value from './bytes-from-png-FIXTURE.png' with { type: 'bytes' };
+
+assert(value instanceof Uint8Array);
+assert(value.buffer instanceof ArrayBuffer);
+
+assert.sameValue(value.length, 67);
+assert.sameValue(value.buffer.byteLength, 67);
+
+assert.compareArray(
+  Array.from(value),
+  [
+    0x89,
+    0x50,
+    0x4e,
+    0x47,
+    0xd,
+    0xa,
+    0x1a,
+    0xa,
+    0x0,
+    0x0,
+    0x0,
+    0xd,
+    0x49,
+    0x48,
+    0x44,
+    0x52,
+    0x0,
+    0x0,
+    0x0,
+    0x1,
+    0x0,
+    0x0,
+    0x0,
+    0x1,
+    0x1,
+    0x0,
+    0x0,
+    0x0,
+    0x0,
+    0x37,
+    0x6e,
+    0xf9,
+    0x24,
+    0x0,
+    0x0,
+    0x0,
+    0xa,
+    0x49,
+    0x44,
+    0x41,
+    0x54,
+    0x78,
+    0x1,
+    0x63,
+    0x60,
+    0x0,
+    0x0,
+    0x0,
+    0x2,
+    0x0,
+    0x1,
+    0x73,
+    0x75,
+    0x1,
+    0x18,
+    0x0,
+    0x0,
+    0x0,
+    0x0,
+    0x49,
+    0x45,
+    0x4e,
+    0x44,
+    0xae,
+    0x42,
+    0x60,
+    0x82,
+  ]
+);
+
+assert.throws(TypeError, function() {
+  value.buffer.resize(0);
+});
+
+assert.throws(TypeError, function() {
+  value.buffer.transfer();
+});
diff --git a/test/language/import/import-bytes/bytes-from-txt-FIXTURE.txt b/test/language/import/import-bytes/bytes-from-txt-FIXTURE.txt
new file mode 100644
index 00000000000..980a0d5f19a
--- /dev/null
+++ b/test/language/import/import-bytes/bytes-from-txt-FIXTURE.txt
@@ -0,0 +1 @@
+Hello World!
diff --git a/test/language/import/import-bytes/bytes-from-txt.js b/test/language/import/import-bytes/bytes-from-txt.js
new file mode 100644
index 00000000000..a1285936ae9
--- /dev/null
+++ b/test/language/import/import-bytes/bytes-from-txt.js
@@ -0,0 +1,44 @@
+// Copyright (C) 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-create-bytes-module
+description: Creates bytes module from txt file
+flags: [module]
+features: [import-attributes, immutable-arraybuffer, import-bytes]
+includes: [compareArray.js]
+---*/
+
+import value from './bytes-from-txt-FIXTURE.txt' with { type: 'bytes' };
+
+assert(value instanceof Uint8Array);
+assert(value.buffer instanceof ArrayBuffer);
+
+assert.sameValue(value.length, 13);
+assert.sameValue(value.buffer.byteLength, 13);
+
+assert.compareArray(
+  Array.from(value),
+  [
+    0x48, // H
+    0x65, // e
+    0x6c, // l
+    0x6c, // l
+    0x6f, // o
+    0x20, // (space)
+    0x57, // W
+    0x6f, // o
+    0x72, // r
+    0x6c, // l
+    0x64, // d
+    0x21, // !
+    0x0a, // (newline)
+  ]
+);
+
+assert.throws(TypeError, function() {
+  value.buffer.resize(0);
+});
+
+assert.throws(TypeError, function() {
+  value.buffer.transfer();
+});