[core] Adds initial Fog::Connection tests

Basic tests to ensure `Fog::Connection` is tested based on it's current
interface.

tests/core/connection_tests.rb

@@ -0,0 +1,26 @@
+Shindo.tests('Fog::Connection', ['core']) do
+
+  raises(ArgumentError, "raises ArgumentError when no arguments given") do
+    Fog::Connection.new
+  end
+
+  tests('new("http://example.com")') do
+    @instance = Fog::Connection.new("http://example.com")
+    responds_to([:request, :reset])
+
+    tests('user agent').returns("fog/#{Fog::VERSION}") do
+      @instance.instance_variable_get(:@excon).data[:headers]['User-Agent']
+    end
+  end
+
+  tests('new("http://example.com", true)') do
+    Fog::Connection.new("http://example.com", true)
+  end
+
+  tests('new("http://example.com", false, options")') do
+    options = {
+      :debug_response => false
+    }
+    Fog::Connection.new("http://example.com", true, options)
+  end
+end

tests/core/user_agent_tests.rb

@@ -1,6 +0,0 @@
-Shindo.tests('Fog::Connection', 'core') do
-  tests('user_agent').returns("fog/#{Fog::VERSION}") do
-    conn = Fog::Connection.new("http://www.testserviceurl.com", false, {})
-    conn.instance_variable_get(:@excon).data[:headers]['User-Agent']
-  end
-end