Testing that persistent connections increased the current and totalCreated counters
...
assert.soon failed: function () {
                    currentConnInfo = db.serverStatus().connections;
                    return (expectedCurrentConnections == currentConnInfo.current) &&
                        (expectedTotalConnections, currentConnInfo.totalCreated);
                }, msg:Incorrect connection numbers. Expected 83 current connections and 105 total connections. Connection info from serverStatus: { "current" : 82, "available" : 737, "totalCreated" : NumberLong(106) }
Error: Printing Stack Trace
    at printStackTrace (src/mongo/shell/utils.js:37:15)
    at doassert (src/mongo/shell/assert.js:6:5)
    at Function.assert.soon (src/mongo/shell/assert.js:174:60)
    at waitForConnections (jstests/connections_opened.js:29:12)
    at jstests/connections_opened.js:55:1
    at /mntfast/data/slave/Linux_64bit_Nightly/mongo/jstests/dur/dur_passthrough.js:35:68
    at Function.Date.timeFunc (src/mongo/shell/types.js:27:17)
    at /mntfast/data/slave/Linux_64bit_Nightly/mongo/jstests/dur/dur_passthrough.js:35:45
    at Array.forEach (native)
    at doTest (/mntfast/data/slave/Linux_64bit_Nightly/mongo/jstests/dur/dur_passthrough.js:18:11)
Wed Jul  3 13:50:36.452 assert.soon failed: function () {
                    currentConnInfo = db.serverStatus().connections;
                    return (expectedCurrentConnections == currentConnInfo.current) &&
                        (expectedTotalConnections, currentConnInfo.totalCreated);
                }, msg:Incorrect connection numbers. Expected 83 current connections and 105 total connections. Connection info from serverStatus: { "current" : 82, "available" : 737, "totalCreated" : NumberLong(106) } at src/mongo/shell/assert.js:7
Wed Jul  3 13:50:36.452 Error: error loading js file: jstests/connections_opened.js at /mntfast/data/slave/Linux_64bit_Nightly/mongo/jstests/dur/dur_passthrough.js:35
failed to load: /mntfast/data/slave/Linux_64bit_Nightly/mongo/jstests/dur/dur_passthrough.js