Tests don't work?

Using Truffle v0.2.7, node 4.2.1, I run `truffle test` in the directory and get:

```
-> % truffle test
Using environment test.
/usr/local/lib/node_modules/truffle/node_modules/solc/bin/soljson-latest.js:1
(function (exports, require, module, __filename, __dirname) { var Module;if(!Module)Module=(typeof Module!=="undefined"?Module:null)||{};var moduleOverrides={};for(var key in Module){if(Module.hasOwnProperty(key)){moduleOverrides[key]=Module[key]}}var ENVIRONMENT_IS_WEB=typeof window==="object";var ENVIRONMENT_IS_WORKER=typeof importScripts==="function";var ENVIRONMENT_IS_NODE=typeof process==="object"&&typeof require==="function"&&!ENVIRONMENT_IS_WEB&&!ENVIRONMENT_IS_WORKER;var ENVIRONMENT_IS_SHELL=!ENVIRONMENT_IS_WEB&&!ENVIRONMENT_IS_NODE&&!ENVIRONMENT_IS_WORKER;if(ENVIRONMENT_IS_NODE){if(!Module["print"])Module["print"]=function print(x){process["stdout"].write(x+"\n")};if(!Module["printErr"])Module["printErr"]=function printErr(x){process["stderr"].write(x+"\n")};var nodeFS=require("fs");var nodePath=require("path");Module["read"]=function read(filename,binary){filename=nodePath["normalize"](filename);var ret=nodeFS["readFileS

TypeError: Cannot read property 'Symbol(Symbol.iterator)' of undefined
at /usr/local/lib/node_modules/truffle/lib/test.es6:73:34
at /usr/local/lib/node_modules/truffle/node_modules/web3/lib/web3/property.js:118:13
at /usr/local/lib/node_modules/truffle/node_modules/web3/lib/web3/requestmanager.js:82:20
at [object Object].request.onreadystatechange (/usr/local/lib/node_modules/truffle/node_modules/web3/lib/web3/httpprovider.js:114:13)
at [object Object].dispatchEvent (/usr/local/lib/node_modules/truffle/node_modules/web3/node_modules/xmlhttprequest/lib/XMLHttpRequest.js:591:25)
at setState (/usr/local/lib/node_modules/truffle/node_modules/web3/node_modules/xmlhttprequest/lib/XMLHttpRequest.js:610:14)
at [object Object].handleError (/usr/local/lib/node_modules/truffle/node_modules/web3/node_modules/xmlhttprequest/lib/XMLHttpRequest.js:532:5)
at ClientRequest.errorHandler (/usr/local/lib/node_modules/truffle/node_modules/web3/node_modules/xmlhttprequest/lib/XMLHttpRequest.js:459:14)
at emitOne (events.js:77:13)
at ClientRequest.emit (events.js:169:7)
at Socket.socketErrorListener (_http_client.js:259:9)
at emitOne (events.js:77:13)
at Socket.emit (events.js:169:7)
at emitErrorNT (net.js:1253:8)
at doNTCallback2 (node.js:439:9)
at process._tickDomainCallback (node.js:394:17)
at Function.module.exports.loopWhile (/usr/local/lib/node_modules/truffle/node_modules/deasync/index.js:64:21)
at /usr/local/lib/node_modules/truffle/node_modules/deasync/index.js:36:18
at runTask (/usr/local/lib/node_modules/truffle/truffle.es6:55:5)
at Object. (/usr/local/lib/node_modules/truffle/truffle.es6:347:14)
at Module._compile (module.js:435:26)
at normalLoader (/usr/local/lib/node_modules/truffle/node_modules/babel/node_modules/babel-core/lib/api/register/node.js:199:5)
at Object.require.extensions.(anonymous function) [as .es6] (/usr/local/lib/node_modules/truffle/node_modules/babel/node_modules/babel-core/lib/api/register/node.js:216:7)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:311:12)
at Function.Module.runMain (module.js:467:10)
at Object. (/usr/local/lib/node_modules/truffle/node_modules/babel/lib/_babel-node.js:144:25)
at Module._compile (module.js:435:26)
at Object.Module._extensions..js (module.js:442:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:311:12)
at Function.Module.runMain (module.js:467:10)
at startup (node.js:134:18)
at node.js:961:3
```

So I tried installing latest version of node (5.0.0), and after fighting to get truffle installed (https://github.com/ConsenSys/truffle/issues/53) I get a slightly different error, but virtually the same:

```
Using environment test.
/usr/local/lib/node_modules/truffle/node_modules/solc/bin/soljson-latest.js:1
(function (exports, require, module, __filename, __dirname) { var Module;if(!Module)Module=(typeof Module!=="undefined"?Module:null)||{};var moduleOverrides={};for(var key in Module){if(Module.hasOwnProperty(key)){moduleOverrides[key]=Module[key]}}var ENVIRONMENT_IS_WEB=typeof window==="object";var ENVIRONMENT_IS_WORKER=typeof importScripts==="function";var ENVIRONMENT_IS_NODE=typeof process==="object"&&typeof require==="function"&&!ENVIRONMENT_IS_WEB&&!ENVIRONMENT_IS_WORKER;var ENVIRONMENT_IS_SHELL=!ENVIRONMENT_IS_WEB&&!ENVIRONMENT_IS_NODE&&!ENVIRONMENT_IS_WORKER;if(ENVIRONMENT_IS_NODE){if(!Module["print"])Module["print"]=function print(x){process["stdout"].write(x+"\n")};if(!Module["printErr"])Module["printErr"]=function printErr(x){process["stderr"].write(x+"\n")};var nodeFS=require("fs");var nodePath=require("path");Module["read"]=function read(filename,binary){filename=nodePath["normalize"](filename);var ret=nodeFS["readFileS

TypeError: Cannot read property 'Symbol(Symbol.iterator)' of undefined
at /usr/local/lib/node_modules/truffle/lib/test.es6:73:34
at /usr/local/lib/node_modules/truffle/node_modules/web3/lib/web3/property.js:118:13
at /usr/local/lib/node_modules/truffle/node_modules/web3/lib/web3/requestmanager.js:82:20
at [object Object].request.onreadystatechange (/usr/local/lib/node_modules/truffle/node_modules/web3/lib/web3/httpprovider.js:114:13)
at [object Object].dispatchEvent (/usr/local/lib/node_modules/truffle/node_modules/xmlhttprequest/lib/XMLHttpRequest.js:591:25)
at setState (/usr/local/lib/node_modules/truffle/node_modules/xmlhttprequest/lib/XMLHttpRequest.js:610:14)
at [object Object].handleError (/usr/local/lib/node_modules/truffle/node_modules/xmlhttprequest/lib/XMLHttpRequest.js:532:5)
at ClientRequest.errorHandler (/usr/local/lib/node_modules/truffle/node_modules/xmlhttprequest/lib/XMLHttpRequest.js:459:14)
at emitOne (events.js:77:13)
at ClientRequest.emit (events.js:169:7)
at Socket.socketErrorListener (_http_client.js:265:9)
at emitOne (events.js:77:13)
at Socket.emit (events.js:169:7)
at emitErrorNT (net.js:1253:8)
at doNTCallback2 (node.js:450:9)
at process._tickDomainCallback (node.js:405:17)
at Function.module.exports.loopWhile (/usr/local/lib/node_modules/truffle/node_modules/deasync/index.js:64:21)
at /usr/local/lib/node_modules/truffle/node_modules/deasync/index.js:36:18
at runTask (/usr/local/lib/node_modules/truffle/truffle.es6:55:5)
at Object. (/usr/local/lib/node_modules/truffle/truffle.es6:347:14)
at Module._compile (module.js:425:26)
at normalLoader (/usr/local/lib/node_modules/truffle/node_modules/babel-core/lib/api/register/node.js:199:5)
at Object.require.extensions.(anonymous function) [as .es6] (/usr/local/lib/node_modules/truffle/node_modules/babel-core/lib/api/register/node.js:216:7)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:311:12)
at Function.Module.runMain (module.js:457:10)
at Object. (/usr/local/lib/node_modules/truffle/node_modules/babel/lib/_babel-node.js:144:25)
at Module._compile (module.js:425:26)
at Object.Module._extensions..js (module.js:432:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:311:12)
at Function.Module.runMain (module.js:457:10)
at startup (node.js:136:18)
at node.js:972:3
```

This is on OS X with latest cpp-ethereum (though I doubt that matters in this case).

Reproduce `truffle test` with the reported Node, Truffle, and cpp-ethereum versions, then inspect `truffle/lib/test.es6` at line 73 and the related web3 request path shown in the stack trace. Done means identifying the compatibility or provider failure and confirming that the repository's tests run successfully with a supported setup.

Written by the indexing model from the issue text.