[Pkg-javascript-commits] [node-leveldown] 143/492: set maxListeners to Infinity to prevent warnings when using deferred open. fixes #47

[Andrew Kelley]

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andrewrk-guest pushed a commit to annotated tag rocksdb-0.10.1
in repository node-leveldown.

commit bae8af68e14216a5bfefe11e201ef38889bc5ae8
Author: Julian Gruber <julian at juliangruber.com>
Date:   Tue Jan 1 10:03:35 2013 +0100

    set maxListeners to Infinity to prevent warnings when using deferred open. fixes #47
---
 lib/levelup.js             |  2 ++
 test/deferred-open-test.js | 23 +++++++++++++++++++++++
 2 files changed, 25 insertions(+)

diff --git a/lib/levelup.js b/lib/levelup.js
index 74ad8d8..8bca9d1 100644
--- a/lib/levelup.js
+++ b/lib/levelup.js
@@ -47,6 +47,8 @@ var bridge       = require('bindings')('levelup.node')
 function LevelUP (location, options) {
   this.__proto__.__proto__ = EventEmitter.prototype
   EventEmitter.call(this)
+  this.setMaxListeners(Infinity)
+  
   this._options = extend(extend({}, defaultOptions), options)
   this._location = location
   this._status = 'new'
diff --git a/test/deferred-open-test.js b/test/deferred-open-test.js
index 98f05c5..e6bd34b 100644
--- a/test/deferred-open-test.js
+++ b/test/deferred-open-test.js
@@ -95,4 +95,27 @@ buster.testCase('Deferred open()', {
       refute(db.isOpen())
       refute(db.isClosed())
     }
+    
+    
+  , 'maxListeners warning': function (done) {
+        var location = common.nextLocation()
+        // 1) open database without callback, opens in worker thread
+          , db       = levelup(location, { createIfMissing: true, errorIfExists: true, encoding: 'utf8' })
+
+        this.closeableDatabases.push(db)
+        this.cleanupDirs.push(location)
+
+        // 2) provoke an EventEmitter maxListeners warning
+        var toPut = 11
+        
+        for (var i = 0; i < toPut; i++) {
+          db.put('some', 'string', function (err) {
+            refute(err)
+            
+            if (!--toPut) {
+              done()
+            }
+          })
+        }
+      }
 })
\ No newline at end of file

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