Improve logging during tests, so debug logs can be output to a file.

This is preferable for tests, so we don't have to always worry about
having quiet output and can better debug things during testing.

.gitignore

@@ -7,4 +7,5 @@
 /test/config/overrides.yml
 /test/config/runtime.json
 /test/config/runtime.yml*
+/test/log/*
 /test/tmp/*

lib/logger.js

@@ -1,5 +1,13 @@
-var Log = require('log');
+var fs = require('fs'),
+    Log = require('log');
 
-var logLevel = process.env.NODE_LOG_LEVEL || 'info';
-var logger = new Log(logLevel);
+var logLevel = process.env.API_UMBRELLA_LOG_LEVEL || 'info';
+var stream = process.stdout;
+if(process.env.API_UMBRELLA_LOG_PATH) {
+  stream = fs.createWriteStream(process.env.API_UMBRELLA_LOG_PATH, {
+    flags: 'a'
+  });
+}
+
+var logger = new Log(logLevel, stream);
 module.exports = logger;

test/support/env.js

@@ -1,4 +1,7 @@
 'use strict';
 
+var path = require('path');
+
 process.env.NODE_ENV = 'test';
-process.env.NODE_LOG_LEVEL = 'error';
+process.env.API_UMBRELLA_LOG_LEVEL = 'debug';
+process.env.API_UMBRELLA_LOG_PATH = path.resolve(__dirname, '../log/test.log');