zlib: Fix test so that it's not trivially passing, then pass it.

Regression from the refactor to move more things into JS.

lib/zlib.js

@@ -22,6 +22,7 @@
 var binding = process.binding('zlib');
 var util = require('util');
 var stream = require('stream');
+var assert = require('assert').ok;
 
 // zlib doesn't provide these, so kludge them in following the same
 // const naming scheme zlib uses.
@@ -176,14 +177,6 @@ function Zlib(opts, Binding) {
   this._buffer = new Buffer(this._chunkSize);
   this._offset = 0;
   var self = this;
-
-  this._binding.onData = function(c) {
-    self.emit('data', c);
-  };
-
-  this._binding.onEnd = function() {
-    self.emit('end');
-  };
 }
 
 util.inherits(Zlib, stream.Stream);
@@ -269,16 +262,21 @@ Zlib.prototype._process = function() {
   req.callback = callback;
   this._processing = req;
 
-  function callback(availInAfter, availOutAfter) {
+  function callback(availInAfter, availOutAfter, buffer) {
-    var have = self.chunkSize - availOutAfter;
+    var have = availOutBefore - availOutAfter;
+
+    assert(have >= 0, 'have should not go down');
+
     if (have > 0) {
       var out = self._buffer.slice(self._offset, self._offset + have);
       self._offset += have;
+      self.emit('data', out);
     }
 
     // XXX Maybe have a 'min buffer' size so we don't dip into the
     // thread pool with only 1 byte available or something?
     if (availOutAfter === 0 || self._offset >= self._chunkSize) {
+      availOutBefore = self._chunkSize;
       self._offset = 0;
       self._buffer = new Buffer(self._chunkSize);
     }

src/node_zlib.cc

@@ -39,7 +39,6 @@ using namespace v8;
 // write() returns one of these, and then calls the cb() when it's done.
 typedef ReqWrap<uv_work_t> WorkReqWrap;
 
-static Persistent<String> ondata_sym;
 static Persistent<String> callback_sym;
 
 enum node_zlib_mode {
@@ -78,6 +77,7 @@ template <node_zlib_mode mode> class ZCtx : public ObjectWrap {
   // write(flush, in, in_off, in_len, out, out_off, out_len)
   static Handle<Value>
   Write(const Arguments& args) {
+    HandleScope scope;
     assert(args.Length() == 7);
 
     ZCtx<mode> *ctx = ObjectWrap::Unwrap< ZCtx<mode> >(args.This());
@@ -177,6 +177,7 @@ template <node_zlib_mode mode> class ZCtx : public ObjectWrap {
   // v8 land!
   static void
   After(uv_work_t* work_req) {
+    HandleScope scope;
     WorkReqWrap *req_wrap = reinterpret_cast<WorkReqWrap *>(work_req->data);
     ZCtx<mode> *ctx = (ZCtx<mode> *)req_wrap->data_;
     Local<Integer> avail_out = Integer::New(ctx->strm_.avail_out);
@@ -322,7 +323,6 @@ void InitZlib(Handle<Object> target) {
   NODE_ZLIB_CLASS(GUNZIP, "Gunzip")
   NODE_ZLIB_CLASS(UNZIP, "Unzip")
 
-  ondata_sym = NODE_PSYMBOL("onData");
   callback_sym = NODE_PSYMBOL("callback");
 
   NODE_DEFINE_CONSTANT(target, Z_NO_FLUSH);

test/simple/test-zlib.js

@@ -59,6 +59,12 @@ if (!process.env.PUMMEL) {
 var fs = require('fs');
 
 var testFiles = [ 'person.jpg', 'elipses.txt', 'empty.txt' ];
+
+if (process.env.FAST) {
+  zlibPairs = [ [zlib.Gzip, zlib.Unzip] ];
+  var testFiles = [ 'person.jpg' ];
+}
+
 var tests = {}
 testFiles.forEach(function(file) {
   tests[file] = fs.readFileSync(path.resolve(common.fixturesDir, file));
@@ -81,6 +87,7 @@ util.inherits(BufferStream, stream.Stream);
 BufferStream.prototype.write = function(c) {
   this.chunks.push(c);
   this.length += c.length;
+  return true;
 };
 
 BufferStream.prototype.end = function(c) {
@@ -94,6 +101,7 @@ BufferStream.prototype.end = function(c) {
   });
   this.emit('data', buf);
   this.emit('end');
+  return true;
 };
 
 
@@ -184,7 +192,7 @@ Object.keys(tests).forEach(function(file) {
                   Def.name + ' -> ' + Inf.name;
         var ok = true;
         var testNum = ++done;
-        for (var i = 0; i < c.length; i++) {
+        for (var i = 0; i < Math.max(c.length, test.length); i++) {
           if (c[i] !== test[i]) {
             ok = false;
             failures ++;