add assertion for value.buffer.immutable

Author: styfle

test/language/import/import-bytes/bytes-from-empty.js

@@ -15,6 +15,7 @@ assert(value.buffer instanceof ArrayBuffer);
 
 assert.sameValue(value.length, 0);
 assert.sameValue(value.buffer.byteLength, 0);
+assert.sameValue(value.buffer.immutable, true);
 
 assert.compareArray(Array.from(value), []);
 

test/language/import/import-bytes/bytes-from-js.js

@@ -15,6 +15,7 @@ assert(value.buffer instanceof ArrayBuffer);
 
 assert.sameValue(value.length, 16);
 assert.sameValue(value.buffer.byteLength, 16);
+assert.sameValue(value.buffer.immutable, true);
 
 assert.compareArray(
   Array.from(value),

test/language/import/import-bytes/bytes-from-json.js

@@ -15,6 +15,7 @@ assert(value.buffer instanceof ArrayBuffer);
 
 assert.sameValue(value.length, 12);
 assert.sameValue(value.buffer.byteLength, 12);
+assert.sameValue(value.buffer.immutable, true);
 
 assert.compareArray(
   Array.from(value),

test/language/import/import-bytes/bytes-from-png.js

@@ -15,6 +15,7 @@ assert(value.buffer instanceof ArrayBuffer);
 
 assert.sameValue(value.length, 67);
 assert.sameValue(value.buffer.byteLength, 67);
+assert.sameValue(value.buffer.immutable, true);
 
 assert.compareArray(
   Array.from(value),

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

@@ -15,6 +15,7 @@ assert(value.buffer instanceof ArrayBuffer);
 
 assert.sameValue(value.length, 13);
 assert.sameValue(value.buffer.byteLength, 13);
+assert.sameValue(value.buffer.immutable, true);
 
 assert.compareArray(
   Array.from(value),