86 lines
2.6 KiB
Ruby
86 lines
2.6 KiB
Ruby
require 'helper'
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describe 'Ring' do
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describe 'a ring of servers' do
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it "have the continuum sorted by value" do
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servers = [stub(:hostname => "localhost", :port => "11211", :weight => 1),
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stub(:hostname => "localhost", :port => "9500", :weight => 1)]
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ring = Dalli::Ring.new(servers, {})
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previous_value = 0
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ring.continuum.each do |entry|
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assert entry.value > previous_value
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previous_value = entry.value
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end
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end
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it 'raise when no servers are available/defined' do
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ring = Dalli::Ring.new([], {})
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assert_raises Dalli::RingError, :message => "No server available" do
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ring.server_for_key('test')
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end
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end
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describe 'containing only a single server' do
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it "raise correctly when it's not alive" do
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servers = [
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Dalli::Server.new("localhost:12345"),
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]
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ring = Dalli::Ring.new(servers, {})
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assert_raises Dalli::RingError, :message => "No server available" do
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ring.server_for_key('test')
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end
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end
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it "return the server when it's alive" do
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servers = [
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Dalli::Server.new("localhost:19191"),
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]
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ring = Dalli::Ring.new(servers, {})
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memcached(19191) do |mc|
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ring = mc.send(:ring)
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assert_equal ring.servers.first.port, ring.server_for_key('test').port
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end
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end
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end
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describe 'containing multiple servers' do
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it "raise correctly when no server is alive" do
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servers = [
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Dalli::Server.new("localhost:12345"),
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Dalli::Server.new("localhost:12346"),
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]
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ring = Dalli::Ring.new(servers, {})
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assert_raises Dalli::RingError, :message => "No server available" do
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ring.server_for_key('test')
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end
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end
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it "return an alive server when at least one is alive" do
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servers = [
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Dalli::Server.new("localhost:12346"),
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Dalli::Server.new("localhost:19191"),
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]
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ring = Dalli::Ring.new(servers, {})
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memcached(19191) do |mc|
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ring = mc.send(:ring)
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assert_equal ring.servers.first.port, ring.server_for_key('test').port
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end
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end
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end
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it 'detect when a dead server is up again' do
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memcached(19997) do
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down_retry_delay = 0.5
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dc = Dalli::Client.new(['localhost:19997', 'localhost:19998'], :down_retry_delay => down_retry_delay)
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assert_equal 1, dc.stats.values.compact.count
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memcached(19998) do
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assert_equal 2, dc.stats.values.compact.count
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end
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end
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end
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end
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end
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