From b89524c43bb59b95d2137ead6f540d43b6d7a700 Mon Sep 17 00:00:00 2001
From: Juan Cruz Viotti <juanchiviotti@gmail.com>
Date: Tue, 2 Dec 2014 11:28:49 -0400
Subject: [PATCH] Implement os module

---
 lib/resin/index.coffee      |  1 +
 lib/resin/os/os.coffee      |  7 +++++++
 lib/resin/os/os.spec.coffee | 36 ++++++++++++++++++++++++++++++++++++
 3 files changed, 44 insertions(+)
 create mode 100644 lib/resin/os/os.coffee
 create mode 100644 lib/resin/os/os.spec.coffee

diff --git a/lib/resin/index.coffee b/lib/resin/index.coffee
index a81685b7..bbf9db04 100644
--- a/lib/resin/index.coffee
+++ b/lib/resin/index.coffee
@@ -9,4 +9,5 @@ module.exports =
 	device: require('./device/device')
 	ui: require('./ui')
 	cli: require('./cli/cli')
+	os: require('./os/os')
 	config: require('./config')
diff --git a/lib/resin/os/os.coffee b/lib/resin/os/os.coffee
new file mode 100644
index 00000000..18294c8c
--- /dev/null
+++ b/lib/resin/os/os.coffee
@@ -0,0 +1,7 @@
+exports.generateCacheName = (id, connectionParams) ->
+	result = "#{id}-#{connectionParams.network}"
+
+	if connectionParams.wifiSsid?
+		result += "-#{connectionParams.wifiSsid}"
+
+	return "#{result}-#{Date.now()}"
diff --git a/lib/resin/os/os.spec.coffee b/lib/resin/os/os.spec.coffee
new file mode 100644
index 00000000..c81cd5f0
--- /dev/null
+++ b/lib/resin/os/os.spec.coffee
@@ -0,0 +1,36 @@
+_ = require('lodash')
+chai = require('chai')
+expect = chai.expect
+os = require('./os')
+
+APPS =
+	validEthernet:
+		id: 91
+		params:
+			network: 'ethernet'
+	invalidNetworkType:
+		id: 91
+		params:
+			network: 'foobar'
+	validWifi:
+		id: 91
+		params:
+			network: 'wifi'
+			wifiSsid: 'MYSSID'
+
+describe 'OS:', ->
+
+	describe '#generateCacheName()', ->
+
+		describe 'given network is ethernet', ->
+
+			it 'should construct a correct name', ->
+				application = APPS.validEthernet
+				result = os.generateCacheName(application.id, application.params)
+				expect(result).to.equal("#{application.id}-ethernet-#{Date.now()}")
+
+		describe 'given network is wifi', ->
+			it 'should construct a correct name', ->
+				application = APPS.validWifi
+				result = os.generateCacheName(application.id, application.params)
+				expect(result).to.equal("#{application.id}-wifi-#{application.params.wifiSsid}-#{Date.now()}")