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# Copyright 2015 gRPC authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
require 'spec_helper'
require 'English'
def load_test_certs
test_root = File.join(File.dirname(__FILE__), 'testdata')
files = ['ca.pem', 'server1.key', 'server1.pem']
files.map { |f| File.open(File.join(test_root, f)).read }
end
describe GRPC::Core::Channel do
let(:fake_host) { 'localhost:0' }
def create_test_cert
GRPC::Core::ChannelCredentials.new(load_test_certs[0])
end
def fork_with_propagated_error_message
pipe_read, pipe_write = IO.pipe
pid = fork do
pipe_read.close
begin
yield
rescue => exc
pipe_write.syswrite(exc.message)
end
pipe_write.close
end
pipe_write.close
exc_message = pipe_read.read
Process.wait(pid)
unless $CHILD_STATUS.success?
raise "forked process failed with #{$CHILD_STATUS}"
end
raise exc_message unless exc_message.empty?
end
shared_examples '#new' do
it 'take a host name without channel args' do
blk = proc do
GRPC::Core::Channel.new('dummy_host', nil, :this_channel_is_insecure)
end
expect(&blk).not_to raise_error
end
it 'does not take a hash with bad keys as channel args' do
blk = construct_with_args(Object.new => 1)
expect(&blk).to raise_error TypeError
blk = construct_with_args(1 => 1)
expect(&blk).to raise_error TypeError
end
it 'does not take a hash with bad values as channel args' do
blk = construct_with_args(symbol: Object.new)
expect(&blk).to raise_error TypeError
blk = construct_with_args('1' => {})
expect(&blk).to raise_error TypeError
end
it 'can take a hash with a symbol key as channel args' do
blk = construct_with_args(a_symbol: 1)
expect(&blk).to_not raise_error
end
it 'can take a hash with a string key as channel args' do
blk = construct_with_args('a_symbol' => 1)
expect(&blk).to_not raise_error
end
it 'can take a hash with a string value as channel args' do
blk = construct_with_args(a_symbol: '1')
expect(&blk).to_not raise_error
end
it 'can take a hash with a symbol value as channel args' do
blk = construct_with_args(a_symbol: :another_symbol)
expect(&blk).to_not raise_error
end
it 'can take a hash with a numeric value as channel args' do
blk = construct_with_args(a_symbol: 1)
expect(&blk).to_not raise_error
end
it 'can take a hash with many args as channel args' do
args = Hash[127.times.collect { |x| [x.to_s, x] }]
blk = construct_with_args(args)
expect(&blk).to_not raise_error
end
it 'raises if grpc was initialized in another process' do
blk = construct_with_args({})
expect(&blk).not_to raise_error
expect do
fork_with_propagated_error_message(&blk)
end.to raise_error(RuntimeError, 'grpc cannot be used before and after forking')
end
end
describe '#new for secure channels' do
def construct_with_args(a)
proc { GRPC::Core::Channel.new('dummy_host', a, create_test_cert) }
end
it_behaves_like '#new'
end
describe '#new for insecure channels' do
it_behaves_like '#new'
def construct_with_args(a)
proc do
GRPC::Core::Channel.new('dummy_host', a, :this_channel_is_insecure)
end
end
end
describe '#create_call' do
it 'creates a call OK' do
ch = GRPC::Core::Channel.new(fake_host, nil, :this_channel_is_insecure)
deadline = Time.now + 5
blk = proc do
ch.create_call(nil, nil, 'dummy_method', nil, deadline)
end
expect(&blk).to_not raise_error
end
it 'raises an error if called on a closed channel' do
ch = GRPC::Core::Channel.new(fake_host, nil, :this_channel_is_insecure)
ch.close
deadline = Time.now + 5
blk = proc do
ch.create_call(nil, nil, 'dummy_method', nil, deadline)
end
expect(&blk).to raise_error(RuntimeError)
end
it 'raises if grpc was initialized in another process' do
ch = GRPC::Core::Channel.new(fake_host, nil, :this_channel_is_insecure)
deadline = Time.now + 5
blk = proc do
fork_with_propagated_error_message do
ch.create_call(nil, nil, 'dummy_method', nil, deadline)
end
end
expect(&blk).to raise_error(RuntimeError, 'grpc cannot be used before and after forking')
end
end
describe '#destroy' do
it 'destroys a channel ok' do
ch = GRPC::Core::Channel.new(fake_host, nil, :this_channel_is_insecure)
blk = proc { ch.destroy }
expect(&blk).to_not raise_error
end
it 'can be called more than once without error' do
ch = GRPC::Core::Channel.new(fake_host, nil, :this_channel_is_insecure)
blk = proc { ch.destroy }
blk.call
expect(&blk).to_not raise_error
end
end
describe '#connectivity_state' do
it 'returns an enum' do
ch = GRPC::Core::Channel.new(fake_host, nil, :this_channel_is_insecure)
valid_states = [
GRPC::Core::ConnectivityStates::IDLE,
GRPC::Core::ConnectivityStates::CONNECTING,
GRPC::Core::ConnectivityStates::READY,
GRPC::Core::ConnectivityStates::TRANSIENT_FAILURE,
GRPC::Core::ConnectivityStates::FATAL_FAILURE
]
expect(valid_states).to include(ch.connectivity_state)
end
it 'returns an enum when trying to connect' do
ch = GRPC::Core::Channel.new(fake_host, nil, :this_channel_is_insecure)
ch.connectivity_state(true)
valid_states = [
GRPC::Core::ConnectivityStates::IDLE,
GRPC::Core::ConnectivityStates::CONNECTING,
GRPC::Core::ConnectivityStates::READY,
GRPC::Core::ConnectivityStates::TRANSIENT_FAILURE,
GRPC::Core::ConnectivityStates::FATAL_FAILURE
]
expect(valid_states).to include(ch.connectivity_state)
end
end
describe '::SSL_TARGET' do
it 'is a symbol' do
expect(GRPC::Core::Channel::SSL_TARGET).to be_a(Symbol)
end
end
describe '#close' do
it 'closes a channel ok' do
ch = GRPC::Core::Channel.new(fake_host, nil, :this_channel_is_insecure)
blk = proc { ch.close }
expect(&blk).to_not raise_error
end
it 'can be called more than once without error' do
ch = GRPC::Core::Channel.new(fake_host, nil, :this_channel_is_insecure)
blk = proc { ch.close }
blk.call
expect(&blk).to_not raise_error
end
end
end
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