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require 'em_test_helper'
class TestResolver < Test::Unit::TestCase
def test_nameserver
assert_kind_of(String, EM::DNS::Resolver.nameserver)
end
def test_nameservers
assert_kind_of(Array, EM::DNS::Resolver.nameservers)
end
def test_hosts
assert_kind_of(Hash, EM::DNS::Resolver.hosts)
# Make sure that blank or comment lines are skipped
refute(EM::DNS::Resolver.hosts.include? nil)
end
def test_a
pend('FIXME: this test is broken on Windows') if windows?
EM.run {
d = EM::DNS::Resolver.resolve "example.com"
d.errback { assert false }
d.callback { |r|
assert r
EM.stop
}
}
end
def test_bad_host
EM.run {
d = EM::DNS::Resolver.resolve "asdfasasdf"
d.callback { assert false }
d.errback { assert true; EM.stop }
}
end
def test_garbage
assert_raises( ArgumentError ) {
EM.run {
EM::DNS::Resolver.resolve 123
}
}
end
# There isn't a public DNS entry like 'example.com' with an A rrset
def test_a_pair
pend('FIXME: this test is broken on Windows') if windows?
EM.run {
d = EM::DNS::Resolver.resolve "yahoo.com"
d.errback { |err| assert false, "failed to resolve yahoo.com: #{err}" }
d.callback { |r|
assert_kind_of(Array, r)
assert r.size > 1, "returned #{r.size} results: #{r.inspect}"
EM.stop
}
}
end
def test_localhost
pend('FIXME: this test is broken on Windows') if windows?
EM.run {
d = EM::DNS::Resolver.resolve "localhost"
d.errback { assert false }
d.callback { |r|
assert_include(["127.0.0.1", "::1"], r.first)
assert_kind_of(Array, r)
EM.stop
}
}
end
def test_timer_cleanup
pend('FIXME: this test is broken on Windows') if windows?
EM.run {
d = EM::DNS::Resolver.resolve "example.com"
d.errback { |err| assert false, "failed to resolve example.com: #{err}" }
d.callback { |r|
# This isn't a great test, but it's hard to get more canonical
# confirmation that the timer is cancelled
assert_nil(EM::DNS::Resolver.socket.instance_variable_get(:@timer))
EM.stop
}
}
end
def test_failure_timer_cleanup
EM.run {
d = EM::DNS::Resolver.resolve "asdfasdf"
d.callback { assert false }
d.errback {
assert_nil(EM::DNS::Resolver.socket.instance_variable_get(:@timer))
EM.stop
}
}
end
end
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