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# Copyright 2017 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'
describe GRPC::InterceptorRegistry do
let(:server) { RpcServer.new }
let(:interceptor) { TestServerInterceptor.new }
let(:interceptors) { [interceptor] }
let(:registry) { described_class.new(interceptors) }
describe 'initialization' do
subject { registry }
context 'with an interceptor extending GRPC::ServerInterceptor' do
it 'should add the interceptor to the registry' do
subject
is = registry.instance_variable_get('@interceptors')
expect(is.count).to eq 1
expect(is.first).to eq interceptor
end
end
context 'with multiple interceptors' do
let(:interceptor2) { TestServerInterceptor.new }
let(:interceptor3) { TestServerInterceptor.new }
let(:interceptors) { [interceptor, interceptor2, interceptor3] }
it 'should maintain order of insertion when iterated against' do
subject
is = registry.instance_variable_get('@interceptors')
expect(is.count).to eq 3
is.each_with_index do |i, idx|
case idx
when 0
expect(i).to eq interceptor
when 1
expect(i).to eq interceptor2
when 2
expect(i).to eq interceptor3
end
end
end
end
context 'with an interceptor not extending GRPC::ServerInterceptor' do
let(:interceptor) { Class }
let(:err) { GRPC::InterceptorRegistry::DescendantError }
it 'should raise an InvalidArgument exception' do
expect { subject }.to raise_error(err)
end
end
end
end
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