diff --git a/.gitignore b/.gitignore
index 9e6a444..7b2c62a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,6 +7,5 @@
 /pkg/
 /spec/reports/
 /tmp/
-/spec/
 .rspec
 .gem
diff --git a/globe_connect.gemspec b/globe_connect.gemspec
index ee939fd..acde679 100644
--- a/globe_connect.gemspec
+++ b/globe_connect.gemspec
@@ -38,4 +38,5 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "bundler", "~> 1.13"
   spec.add_development_dependency "rake", "~> 10.0"
   spec.add_development_dependency "rspec", "~> 3.5"
+  spec.add_development_dependency "webmock"
 end
diff --git a/spec/fixtures/sms.json b/spec/fixtures/sms.json
new file mode 100644
index 0000000..8c77e71
--- /dev/null
+++ b/spec/fixtures/sms.json
@@ -0,0 +1,19 @@
+{
+  "outboundSMSMessageRequest": {
+    "address": "tel:+639175595283",
+    "deliveryInfoList": {
+      "deliveryInfo": [],
+      "resourceURL": "https://devapi.globelabs.com.ph/smsmessaging/v1/outbound/8011/requests?access_token=3YM8xurK_IPdhvX4OUWXQljcHTIPgQDdTESLXDIes4g"
+    },
+    "senderAddress": "8011",
+    "outboundSMSTextMessage": {
+      "message": "Hello World"
+    },
+    "receiptRequest": {
+      "notifyURL": "http://test-sms1.herokuapp.com/callback",
+      "callbackData": null,
+      "senderName": null,
+      "resourceURL": "https://devapi.globelabs.com.ph/smsmessaging/v1/outbound/8011/requests?access_token=3YM8xurK_IPdhvX4OUWXQljcHTIPgQDdTESLXDIes4g"
+    }
+  }
+}
diff --git a/spec/lib/globe_connect/sms_spec.rb b/spec/lib/globe_connect/sms_spec.rb
new file mode 100644
index 0000000..8b992bc
--- /dev/null
+++ b/spec/lib/globe_connect/sms_spec.rb
@@ -0,0 +1,36 @@
+require 'spec_helper'
+
+describe Sms do
+  describe '#send_message' do
+    let(:body) do
+      {
+        outboundSMSMessageRequest: {
+          senderAddress:'tel:short_code',
+          address:['tel:subscriber_number'],
+          outboundSMSTextMessage:{message:'message'}
+        }
+      }
+    end
+
+    before do
+      stub_post('/smsmessaging/v1/outbound/short_code/requests?access_token=token').
+        with(body: JSON.generate(body), headers: request_headers).
+        to_return(status: 200, body: fixture('sms.json'), headers: {})
+    end
+
+    it 'returns sms response' do
+      sms = Sms.new 'token', 'short_code'
+      response = sms.send_message 'subscriber_number', 'message'
+
+      expect(response['outboundSMSMessageRequest']).to be_truthy
+    end
+
+    it 'send the correct resource' do
+      sms = Sms.new 'token', 'short_code'
+      sms.send_message 'subscriber_number', 'message'
+
+      expect(a_post('/smsmessaging/v1/outbound/short_code/requests?access_token=token')
+        .with(body: JSON.generate(body), headers: request_headers)).to have_been_made
+    end
+  end
+end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
new file mode 100644
index 0000000..b42ef60
--- /dev/null
+++ b/spec/spec_helper.rb
@@ -0,0 +1,24 @@
+require 'globe_connect'
+require 'webmock/rspec'
+
+BASE_URL = 'https://devapi.globelabs.com.ph'
+
+def stub_post(path)
+  stub_request(:post, BASE_URL + path)
+end
+
+def a_post(path)
+  a_request(:post, BASE_URL + path)
+end
+
+def fixture(file)
+  File.new(fixture_path + '/' + file)
+end
+
+def fixture_path
+  File.expand_path('../fixtures', __FILE__)
+end
+
+def request_headers
+  {'Content-Type'=>'application/json', 'Host'=>'devapi.globelabs.com.ph'}
+end