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require "spec_helper"
require "fog/compute/models/server"
describe Fog::Compute::Server do
before do
@server = Fog::Compute::Server.new
end
describe "#sshable?" do
describe "when the server is not ready" do
it "is false" do
@server.stub(:ready?, false) do
refute @server.sshable?
end
end
end
describe "when the server is ready" do
describe "when the ssh_ip_address is nil" do
it "is false" do
@server.stub(:ready?, true) do
@server.stub(:ssh_ip_address, nil) do
refute @server.sshable?
end
end
end
end
describe "when the ssh_ip_address exists" do
# Define these constants which would be imported by net-ssh once loaded
module Net
module SSH
class AuthenticationFailed < RuntimeError
end
class Disconnect < RuntimeError
end
end
end
describe "and ssh times out" do
it "is false" do
@server.stub(:ready?, true) do
@server.stub(:ssh_ip_address, "10.0.0.1") do
raises_timeout = lambda { |_time| raise Timeout::Error.new }
Timeout.stub(:timeout, raises_timeout) do
refute @server.sshable?
end
end
end
end
end
describe "and it raises Net::SSH::AuthenticationFailed" do
it "is false" do
@server.stub(:ready?, true) do
@server.stub(:ssh_ip_address, "10.0.0.1") do
raise_error = lambda { |_cmd, _options={}| raise Net::SSH::AuthenticationFailed.new }
@server.stub(:ssh, raise_error) do
refute @server.sshable?
end
end
end
end
it "resets SSH timeout" do
@server.instance_variable_set(:@sshable_timeout, 8)
@server.stub(:ready?, true) do
@server.stub(:ssh_ip_address, "10.0.0.1") do
raise_error = lambda { |_cmd, _options={}| raise Net::SSH::AuthenticationFailed.new }
@server.stub(:ssh, raise_error) do
@server.sshable?
assert_nil @server.instance_variable_get(:@sshable_timeout), nil
end
end
end
end
end
describe "and it raises Net::SSH::Disconnect" do
it "is false" do
@server.stub(:ready?, true) do
@server.stub(:ssh_ip_address, "10.0.0.1") do
raise_error = lambda { |_cmd, _options={}| raise Net::SSH::Disconnect.new }
@server.stub(:ssh, raise_error) do
refute @server.sshable?
end
end
end
end
it "resets SSH timeout" do
@server.instance_variable_set(:@sshable_timeout, 8)
@server.stub(:ready?, true) do
@server.stub(:ssh_ip_address, "10.0.0.1") do
raise_error = lambda { |_cmd, _options={}| raise Net::SSH::Disconnect.new }
@server.stub(:ssh, raise_error) do
@server.sshable?
assert_nil @server.instance_variable_get(:@sshable_timeout), nil
end
end
end
end
end
describe "and it raises SystemCallError" do
it "is false" do
@server.stub(:ready?, true) do
@server.stub(:ssh_ip_address, "10.0.0.1") do
raise_error = lambda { |_cmd, _options={}| raise SystemCallError.new("message, 0") }
@server.stub(:ssh, raise_error) do
refute @server.sshable?
end
end
end
end
it "does not increase SSH timeout" do
@server.stub(:ready?, true) do
@server.stub(:ssh_ip_address, "10.0.0.1") do
raise_error = lambda { |_cmd, _options={}| raise SystemCallError.new("message, 0") }
@server.stub(:ssh, raise_error) do
@server.sshable?
assert_equal @server.instance_variable_get(:@sshable_timeout), 8
end
end
end
end
end
describe "and ssh completes within the designated timeout" do
it "is true" do
@server.stub(:ready?, true) do
@server.stub(:ssh_ip_address, "10.0.0.1") do
@server.stub(:ssh, "datum") do
assert @server.sshable?
end
end
end
end
end
describe "when called successively" do
describe "and ssh times out" do
it "increases the timeout factor by 1.5" do
@server.stub(:ready?, true) do
@server.stub(:ssh_ip_address, "10.0.0.1") do
raises_timeout = lambda do |time|
assert(time == 8)
raise Timeout::Error.new
end
Timeout.stub(:timeout, raises_timeout) do
refute @server.sshable?
end
raises_timeout = lambda do |time|
assert_equal(12, time)
raise Timeout::Error.new
end
Timeout.stub(:timeout, raises_timeout) do
refute @server.sshable?
end
end
end
end
it "does not increase timeout beyond 60s" do
@server.stub(:ready?, true) do
@server.stub(:ssh_ip_address, "10.0.0.1") do
raises_timeout = lambda { |_time| raise Timeout::Error.new }
Timeout.stub(:timeout, raises_timeout) do
5.times { refute @server.sshable? }
end
raises_timeout = lambda do |time|
assert_equal(60, time)
raise Timeout::Error.new
end
Timeout.stub(:timeout, raises_timeout) do
refute @server.sshable?
end
raises_timeout = lambda do |time|
assert_equal(60, time)
raise Timeout::Error.new
end
Timeout.stub(:timeout, raises_timeout) do
refute @server.sshable?
end
end
end
end
describe "when ssh eventually succeeds" do
it "resets the timeout to the initial value" do
@server.stub(:ready?, true) do
@server.stub(:ssh_ip_address, "10.0.0.1") do
raises_timeout = lambda do |time|
assert(time == 8)
raise Timeout::Error.new
end
Timeout.stub(:timeout, raises_timeout) do
refute @server.sshable?
end
@server.stub(:ssh, "datum") do
assert @server.sshable?
end
raises_timeout = lambda do |time|
assert_equal(8, time)
raise Timeout::Error.new
end
Timeout.stub(:timeout, raises_timeout) do
refute @server.sshable?
end
end
end
end
end
end
end
end
end
end
end
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