test: check noAssert option in buf.write*()

Add test to cover previously untested `noAssert` functionality in
buf.write*() functions.
PR-URL: #10790
Reviewed-By: Rich Trott <rtrott@gmail.com>

Author: larissayvette

test/parallel/test-buffer-write-noassert.js

@@ -0,0 +1,48 @@
+'use strict';
+require('../common');
+constassert=require('assert');
+
+// testing buffer write functions
+
+functionwrite(funx,args,result,res){
+{
+constbuf=Buffer.alloc(9);
+assert.strictEqual(buf[funx](...args),result);
+assert.deepStrictEqual(buf,res);
+}
+
+{
+constinvalidArgs=Array.from(args);
+invalidArgs[1]=-1;
+assert.throws(
+()=>Buffer.alloc(9)[funx](...invalidArgs),
+/^RangeError:(?:Index)?outofrange(?:index)?$/
+);
+}
+
+{
+constbuf2=Buffer.alloc(9);
+assert.strictEqual(buf2[funx](...args,true),result);
+assert.deepStrictEqual(buf2,res);
+}
+
+}
+
+write('writeInt8',[1,0],1,Buffer.from([1,0,0,0,0,0,0,0,0]));
+write('writeIntBE',[1,1,4],5,Buffer.from([0,0,0,0,1,0,0,0,0]));
+write('writeIntLE',[1,1,4],5,Buffer.from([0,1,0,0,0,0,0,0,0]));
+write('writeInt16LE',[1,1],3,Buffer.from([0,1,0,0,0,0,0,0,0]));
+write('writeInt16BE',[1,1],3,Buffer.from([0,0,1,0,0,0,0,0,0]));
+write('writeInt32LE',[1,1],5,Buffer.from([0,1,0,0,0,0,0,0,0]));
+write('writeInt32BE',[1,1],5,Buffer.from([0,0,0,0,1,0,0,0,0]));
+write('writeUInt8',[1,0],1,Buffer.from([1,0,0,0,0,0,0,0,0]));
+write('writeUIntLE',[1,1,4],5,Buffer.from([0,1,0,0,0,0,0,0,0]));
+write('writeUIntBE',[1,1,4],5,Buffer.from([0,0,0,0,1,0,0,0,0]));
+write('writeUInt16LE',[1,1],3,Buffer.from([0,1,0,0,0,0,0,0,0]));
+write('writeUInt16BE',[1,1],3,Buffer.from([0,0,1,0,0,0,0,0,0]));
+write('writeUInt32LE',[1,1],5,Buffer.from([0,1,0,0,0,0,0,0,0]));
+write('writeUInt32BE',[1,1],5,Buffer.from([0,0,0,0,1,0,0,0,0]));
+write('writeDoubleBE',[1,1],9,Buffer.from([0,63,240,0,0,0,0,0,0]));
+write('writeDoubleLE',[1,1],9,Buffer.from([0,0,0,0,0,0,0,240,63]));
+write('writeFloatBE',[1,1],5,Buffer.from([0,63,128,0,0,0,0,0,0]));
+write('writeFloatLE',[1,1],5,Buffer.from([0,0,0,128,63,0,0,0,0]));