[import-bytes] add initial tests for import bytes proposal

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

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();
+});

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();
+});

test/language/import/import-bytes/bytes-from-txt-FIXTURE.txt

@@ -0,0 +1 @@
+Hello World!

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();
+});