41   const parser = new HTTPParser();
42   parser.initialize(type, {});
44   parser.headers = [];
45   parser.url = '';
47   parser[kOnHeaders] = function(headers, url) {  function
48     parser.headers = parser.headers.concat(headers);
49     parser.url += url;
52   parser[kOnHeadersComplete] = function() {
55   parser[kOnBody] = mustNotCall('kOnBody should not be called');
57   parser[kOnMessageComplete] = function() {
60   return parser;
83     assert.strictEqual(url || parser.url, '/hello');
86   const parser = newParser(REQUEST);  constant
87   parser[kOnHeadersComplete] = mustCall(onHeadersComplete);
88   parser.execute(request, 0, request.length);
95   parser[kOnHeadersComplete] = function() {  function
99   parser.initialize(REQUEST, {});
102     () => { parser.execute(request, 0, request.length); },
134   const parser = newParser(RESPONSE);
135   parser[kOnHeadersComplete] = mustCall(onHeadersComplete);
136   parser[kOnBody] = mustCall(onBody);
137   parser.execute(request, 0, request.length);
155     assert.deepStrictEqual(headers || parser.headers, []);
158   const parser = newParser(RESPONSE);
159   parser[kOnHeadersComplete] = mustCall(onHeadersComplete);
160   parser.execute(request, 0, request.length);
191     assert.strictEqual(url || parser.url, '/it');
195     parser[kOnHeaders] = mustCall(onHeaders);
204   const parser = newParser(REQUEST);
205   parser[kOnHeadersComplete] = mustCall(onHeadersComplete);
206   parser[kOnBody] = mustCall(onBody);
207   parser.execute(request, 0, request.length);
229       headers || parser.headers,
233   const parser = newParser(REQUEST);
234   parser[kOnHeadersComplete] = mustCall(onHeadersComplete);
235   parser.execute(request, 0, request.length);
255     assert.strictEqual(url || parser.url, '/foo/bar/baz?quux=42#1337');
259     headers = headers || parser.headers;
268   const parser = newParser(REQUEST);
269   parser[kOnHeadersComplete] = mustCall(onHeadersComplete);
270   parser.execute(request, 0, request.length);
289     assert.strictEqual(url || parser.url, '/it');
299   const parser = newParser(REQUEST);
300   parser[kOnHeadersComplete] = mustCall(onHeadersComplete);
301   parser[kOnBody] = mustCall(onBody);
302   parser.execute(request, 0, request.length);
327     assert.strictEqual(url || parser.url, '/it');
340   const parser = newParser(REQUEST);
341   parser[kOnHeadersComplete] = mustCall(onHeadersComplete);
342   parser[kOnBody] = mustCall(onBody, body_parts.length);
343   parser.execute(request, 0, request.length);
365     assert.strictEqual(url || parser.url, '/it');
379   const parser = newParser(REQUEST);
380   parser[kOnHeadersComplete] = mustCall(onHeadersComplete);
381   parser[kOnBody] = mustCall(onBody, body_parts.length);
382   parser.execute(request, 0, request.length);
394   parser.execute(request, 0, request.length);
424       assert.strictEqual(url || parser.url, '/helpme');
437     const parser = newParser(REQUEST);
438     parser[kOnHeadersComplete] = mustCall(onHeadersComplete);
439     parser[kOnBody] = onBody;
440     parser.execute(a, 0, a.length);
441     parser.execute(b, 0, b.length);
481     assert.strictEqual(url || parser.url, '/it');
485       headers || parser.headers,
497   const parser = newParser(REQUEST);
498   parser[kOnHeadersComplete] = mustCall(onHeadersComplete);
499   parser[kOnBody] = onBody;
502     parser.execute(request, i, 1);
554   const parser = newParser(REQUEST);
555   parser[kOnHeadersComplete] = onHeadersComplete1;
556   parser[kOnBody] = expectBody('ping');
557   parser.execute(req1, 0, req1.length);
559   parser.initialize(REQUEST, req2);
560   parser[kOnBody] = expectBody('pong');
561   parser[kOnHeadersComplete] = onHeadersComplete2;
562   parser.execute(req2, 0, req2.length);
570   const parser = newParser(REQUEST);
571   const notparser = { execute: parser.execute };