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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 'Client Interceptors' do
let(:interceptor) { TestClientInterceptor.new }
let(:interceptors_opts) { { interceptors: [interceptor] } }
let(:request) { EchoMsg.new }
let(:service) { EchoService }
before(:each) do
build_rpc_server
end
context 'when a client interceptor is added' do
context 'with a request/response call' do
it 'should be called', server: true do
expect(interceptor).to receive(:request_response)
.once.and_call_original
run_services_on_server(@server, services: [service]) do
stub = build_insecure_stub(EchoStub, opts: interceptors_opts)
expect_any_instance_of(GRPC::ActiveCall).to receive(:request_response)
.once.and_call_original
expect(stub.an_rpc(request)).to be_a(EchoMsg)
end
end
it 'can modify outgoing metadata', server: true do
expect(interceptor).to receive(:request_response)
.once.and_call_original
run_services_on_server(@server, services: [service]) do
stub = build_insecure_stub(EchoStub, opts: interceptors_opts)
expect_any_instance_of(GRPC::ActiveCall).to receive(:request_response)
.with(request, metadata: { 'foo' => 'bar_from_request_response' })
.once.and_call_original
expect(stub.an_rpc(request)).to be_a(EchoMsg)
end
end
end
context 'with a client streaming call' do
it 'should be called', server: true do
expect(interceptor).to receive(:client_streamer)
.once.and_call_original
run_services_on_server(@server, services: [service]) do
stub = build_insecure_stub(EchoStub, opts: interceptors_opts)
expect_any_instance_of(GRPC::ActiveCall).to receive(:client_streamer)
.once.and_call_original
requests = [EchoMsg.new, EchoMsg.new]
expect(stub.a_client_streaming_rpc(requests)).to be_a(EchoMsg)
end
end
it 'can modify outgoing metadata', server: true do
expect(interceptor).to receive(:client_streamer)
.once.and_call_original
run_services_on_server(@server, services: [service]) do
stub = build_insecure_stub(EchoStub, opts: interceptors_opts)
requests = [EchoMsg.new, EchoMsg.new]
expect_any_instance_of(GRPC::ActiveCall).to receive(:client_streamer)
.with(requests, metadata: { 'foo' => 'bar_from_client_streamer' })
.once.and_call_original
expect(stub.a_client_streaming_rpc(requests)).to be_a(EchoMsg)
end
end
end
context 'with a server streaming call' do
it 'should be called', server: true do
expect(interceptor).to receive(:server_streamer)
.once.and_call_original
run_services_on_server(@server, services: [service]) do
stub = build_insecure_stub(EchoStub, opts: interceptors_opts)
request = EchoMsg.new
expect_any_instance_of(GRPC::ActiveCall).to receive(:server_streamer)
.once.and_call_original
responses = stub.a_server_streaming_rpc(request)
responses.each do |r|
expect(r).to be_a(EchoMsg)
end
end
end
it 'can modify outgoing metadata', server: true do
expect(interceptor).to receive(:server_streamer)
.once.and_call_original
run_services_on_server(@server, services: [service]) do
stub = build_insecure_stub(EchoStub, opts: interceptors_opts)
request = EchoMsg.new
expect_any_instance_of(GRPC::ActiveCall).to receive(:server_streamer)
.with(request, metadata: { 'foo' => 'bar_from_server_streamer' })
.once.and_call_original
responses = stub.a_server_streaming_rpc(request)
responses.each do |r|
expect(r).to be_a(EchoMsg)
end
end
end
end
context 'with a bidi call' do
it 'should be called', server: true do
expect(interceptor).to receive(:bidi_streamer)
.once.and_call_original
run_services_on_server(@server, services: [service]) do
stub = build_insecure_stub(EchoStub, opts: interceptors_opts)
expect_any_instance_of(GRPC::ActiveCall).to receive(:bidi_streamer)
.once.and_call_original
requests = [EchoMsg.new, EchoMsg.new]
responses = stub.a_bidi_rpc(requests)
responses.each do |r|
expect(r).to be_a(EchoMsg)
end
end
end
it 'can modify outgoing metadata', server: true do
expect(interceptor).to receive(:bidi_streamer)
.once.and_call_original
run_services_on_server(@server, services: [service]) do
stub = build_insecure_stub(EchoStub, opts: interceptors_opts)
requests = [EchoMsg.new, EchoMsg.new]
expect_any_instance_of(GRPC::ActiveCall).to receive(:bidi_streamer)
.with(requests, metadata: { 'foo' => 'bar_from_bidi_streamer' })
.once.and_call_original
responses = stub.a_bidi_rpc(requests)
responses.each do |r|
expect(r).to be_a(EchoMsg)
end
end
end
end
end
end
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