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require 'common'
require 'net/ssh/multi/session'
class SessionTest < Minitest::Test
def setup
@session = Net::SSH::Multi::Session.new
end
def test_group_should_fail_when_given_both_mapping_and_block
assert_raises(ArgumentError) do
@session.group(:app => mock('server')) { |s| }
end
end
def test_group_with_block_should_use_groups_within_block_and_restore_on_exit
@session.open_groups.concat([:first, :second])
assert_equal [:first, :second], @session.open_groups
yielded = nil
@session.group(:third, :fourth) do |s|
yielded = s
assert_equal [:first, :second, :third, :fourth], @session.open_groups
end
assert_equal [:first, :second], @session.open_groups
assert_equal @session, yielded
end
def test_group_with_mapping_should_append_new_servers_to_specified_and_open_groups
s1, s2, s3, s4 = @session.use('h1', 'h2', 'h3', 'h4')
@session.group :second => s1
@session.open_groups.concat([:first, :second])
@session.group %w(third fourth) => [s2, s3], :fifth => s1, :sixth => [s4]
assert_equal [s1, s2, s3, s4], @session.groups[:first].sort
assert_equal [s1, s2, s3, s4], @session.groups[:second].sort
assert_equal [s2, s3], @session.groups[:third].sort
assert_equal [s2, s3], @session.groups[:fourth].sort
assert_equal [s1], @session.groups[:fifth].sort
assert_equal [s4], @session.groups[:sixth].sort
end
def test_via_should_instantiate_and_set_default_gateway
Net::SSH::Gateway.expects(:new).with('host', 'user', :a => :b).returns(:gateway)
assert_equal @session, @session.via('host', 'user', :a => :b)
assert_equal :gateway, @session.default_gateway
end
def test_use_should_add_new_server_to_server_list
@session.open_groups.concat([:first, :second])
server = @session.use('user@host', :a => :b)
assert_equal [server], @session.servers
assert_equal 'host', server.host
assert_equal 'user', server.user
assert_equal({:a => :b}, server.options)
assert_nil server.gateway
end
def test_use_with_open_groups_should_add_new_server_to_server_list_and_groups
@session.open_groups.concat([:first, :second])
server = @session.use('host')
assert_equal [server], @session.groups[:first].sort
assert_equal [server], @session.groups[:second].sort
end
def test_use_with_default_gateway_should_set_gateway_on_server
Net::SSH::Gateway.expects(:new).with('host', 'user', {}).returns(:gateway)
@session.via('host', 'user')
server = @session.use('host2')
assert_equal :gateway, server.gateway
end
def test_use_with_duplicate_server_will_not_add_server_twice
s1, s2 = @session.use('host', 'host')
assert_equal 1, @session.servers.length
assert_equal s1.object_id, s2.object_id
end
def test_with_should_yield_new_subsession_with_servers_for_criteria
yielded = nil
@session.expects(:servers_for).with(:app, :web).returns([:servers])
result = @session.with(:app, :web) do |s|
yielded = s
end
assert_equal result, yielded
assert_equal [:servers], yielded.servers
end
def test_servers_for_with_unknown_constraint_should_raise_error
assert_raises(ArgumentError) do
@session.servers_for(:app => { :all => :foo })
end
end
def test_with_with_constraints_should_build_subsession_with_matching_servers
conditions = { :app => { :only => { :primary => true }, :except => { :backup => true } } }
@session.expects(:servers_for).with(conditions).returns([:servers])
assert_equal [:servers], @session.with(conditions).servers
end
def test_on_should_return_subsession_containing_only_the_given_servers
s1, s2 = @session.use('h1', 'h2')
subsession = @session.on(s1, s2)
assert_equal [s1, s2], subsession.servers
end
def test_on_should_yield_subsession_if_block_is_given
s1 = @session.use('h1')
yielded = nil
result = @session.on(s1) do |s|
yielded = s
assert_equal [s1], s.servers
end
assert_equal result, yielded
end
def test_servers_for_should_return_all_servers_if_no_arguments
srv1, srv2, srv3 = @session.use('h1', 'h2', 'h3')
assert_equal [srv1, srv2, srv3], @session.servers_for.sort
end
def test_servers_for_should_return_servers_only_for_given_group
srv1, srv2, srv3 = @session.use('h1', 'h2', 'h3')
@session.group :app => [srv1, srv2], :db => [srv3]
assert_equal [srv1, srv2], @session.servers_for(:app).sort
end
def test_servers_for_should_not_return_duplicate_servers
srv1, srv2, srv3 = @session.use('h1', 'h2', 'h3')
@session.group :app => [srv1, srv2], :db => [srv2, srv3]
assert_equal [srv1, srv2, srv3], @session.servers_for(:app, :db).sort
end
def test_servers_for_should_correctly_apply_only_and_except_constraints
srv1, srv2, srv3 = @session.use('h1', :properties => {:a => 1}), @session.use('h2', :properties => {:a => 1, :b => 2}), @session.use('h3')
@session.group :app => [srv1, srv2, srv3]
assert_equal [srv1], @session.servers_for(:app => {:only => {:a => 1}, :except => {:b => 2}})
end
def test_close_should_close_server_sessions
srv1, srv2 = @session.use('h1', 'h2')
srv1.expects(:close_channels)
srv2.expects(:close_channels)
srv1.expects(:close)
srv2.expects(:close)
@session.close
end
def test_close_should_shutdown_default_gateway
gateway = mock('gateway')
gateway.expects(:shutdown!)
Net::SSH::Gateway.expects(:new).returns(gateway)
@session.via('host', 'user')
@session.close
end
def test_loop_should_loop_until_process_is_false
@session.expects(:process).with(5).times(4).returns(true,true,true,false).yields
yielded = false
@session.loop(5) { yielded = true }
assert yielded
end
def test_preprocess_should_immediately_return_false_if_block_returns_false
srv = @session.use('h1')
srv.expects(:preprocess).never
assert_equal false, @session.preprocess { false }
end
def test_preprocess_should_call_preprocess_on_component_servers
srv = @session.use('h1')
srv.expects(:preprocess)
assert_equal :hello, @session.preprocess { :hello }
end
def test_preprocess_should_succeed_even_without_block
srv = @session.use('h1')
srv.expects(:preprocess)
assert_equal true, @session.preprocess
end
def test_postprocess_should_call_postprocess_on_component_servers
srv = @session.use('h1')
srv.expects(:postprocess).with([:a], [:b])
assert_equal true, @session.postprocess([:a], [:b])
end
def test_process_should_return_false_if_preprocess_returns_false
assert_equal false, @session.process { false }
end
def test_process_should_call_select_on_combined_readers_and_writers_from_all_servers
@session.expects(:postprocess).with([:b, :c], [:a, :c])
srv1, srv2, srv3 = @session.use('h1', 'h2', 'h3')
srv1.expects(:readers).returns([:a])
srv1.expects(:writers).returns([:a])
srv2.expects(:readers).returns([])
srv2.expects(:writers).returns([])
srv3.expects(:readers).returns([:b, :c])
srv3.expects(:writers).returns([:c])
IO.expects(:select).with([:a, :b, :c], [:a, :c], nil, 5).returns([[:b, :c], [:a, :c]])
@session.process(5)
end
def test_process_should_pass_minimum_keepalive_interval_as_io_select_timeout
@session.use('h1', :keepalive => true)
@session.use('h2', :keepalive_interval => 1)
@session.use('h3', :keepalive => true, :keepalive_interval => 2)
@session.use('h4', :keepalive => true, :keepalive_interval => 3)
IO.expects(:select).with([], [], nil, 2)
@session.process
end
def test_process_should_pass_wait_as_io_select_timeout_if_provided_and_minimum
@session.use('h1', :keepalive => true, :keepalive_interval => 1)
IO.expects(:select).with([], [], nil, 1)
@session.process(2)
end
def test_process_should_pass_nil_as_io_select_timeout_by_default
@session.use('h1')
IO.expects(:select).with([], [], nil, nil)
@session.process
end
end
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