[Pkg-javascript-commits] [node-leveldown] 152/492: test that open and close are idempotent

[Andrew Kelley]

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

commit 01bf962c5b552f8406f7b6a0590514047e2fbe62
Author: Dominic Tarr <dominic.tarr at gmail.com>
Date:   Tue Jan 8 18:02:39 2013 +0700

    test that open and close are idempotent
---
 test/idempotent-test.js | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)

diff --git a/test/idempotent-test.js b/test/idempotent-test.js
new file mode 100644
index 0000000..39d7391
--- /dev/null
+++ b/test/idempotent-test.js
@@ -0,0 +1,48 @@
+/* Copyright (c) 2012 Rod Vagg <@rvagg> */
+
+var buster  = require('buster')
+  , assert  = buster.assert
+  , levelup = require('../lib/levelup.js')
+  , errors  = require('../lib/errors.js')
+  , async   = require('async')
+  , fs      = require('fs')
+  , common  = require('./common')
+
+buster.testCase('idempotent open & close', {
+  'call open twice, should emit "open" once': function (done) {
+      var location = common.nextLocation()
+      var n = 0, m = 0
+      var db = levelup(location, { createIfMissing: true }, function (err, db) {
+        //callback should fire only once.
+        assert.equals(n++, 0)
+        if(n && m) close()
+        })
+
+      db.on('open', function () {
+        console.log('emit open')
+        assert.equals(m++, 0)
+        if(n && m) close()    
+      })
+
+      db.open()
+
+      //this will only be called once.
+      function close () {
+        var closing = false
+        db.on('closing', function () {
+          closing = true
+        })
+        db.on('closed', function () {
+          assert.equals(closing, true)
+          done()
+        })
+
+        //close needs to be idempotent too.
+        db.close()
+
+        process.nextTick(function () {
+          db.close()
+        })
+      }
+    }
+})

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