Add a simple test for client options

Author: Temikus

test/integration/compute/core_compute/test_client_options.rb

@@ -0,0 +1,12 @@
+require "helpers/integration_test_helper"
+
+class TestComputeClient < FogIntegrationTest
+  def test_client_options
+    # XXX This is a very rudimentary test checking that proxy option is applied
+    client_options = { proxy_url: "https://user:password@host:8080" }
+    connection = Fog::Compute::Google.new(google_client_options: client_options)
+
+    err = assert_raises(ArgumentError) { connection.servers.all }
+    assert_match(/unsupported proxy/, err.message)
+  end
+end