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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 'grpc'
require 'grpc/generic/rpc_desc'
require 'grpc/generic/service'
# A test message that encodes/decodes using marshal/marshal.
class GoodMsg
def self.marshal(_o)
''
end
def self.unmarshal(_o)
GoodMsg.new
end
end
# A test message that encodes/decodes using encode/decode.
class EncodeDecodeMsg
def self.encode(_o)
''
end
def self.decode(_o)
GoodMsg.new
end
end
GenericService = GRPC::GenericService
Dsl = GenericService::Dsl
describe Dsl do
it 'can be included in new classes' do
blk = proc { Class.new { include Dsl } }
expect(&blk).to_not raise_error
end
end
describe GenericService do
context '#underscore' do
it 'should convert CamelCase to underscore separated' do
expect(GenericService.underscore('AnRPC')).to eq('an_rpc')
expect(GenericService.underscore('AMethod')).to eq('a_method')
expect(GenericService.underscore('PrintHTML')).to eq('print_html')
expect(GenericService.underscore('SeeHTMLBooks')).to eq('see_html_books')
end
end
describe 'including it' do
it 'adds a class method, rpc' do
c = Class.new do
include GenericService
end
expect(c.methods).to include(:rpc)
end
it 'adds rpc descs using the added class method, #rpc' do
c = Class.new do
include GenericService
rpc :AnRpc, GoodMsg, GoodMsg
end
expect(c.rpc_descs).to include(:AnRpc)
expect(c.rpc_descs[:AnRpc]).to be_a(GRPC::RpcDesc)
end
it 'give subclasses access to #rpc_descs' do
base = Class.new do
include GenericService
rpc :AnRpc, GoodMsg, GoodMsg
end
c = Class.new(base) do
end
expect(c.rpc_descs).to include(:AnRpc)
expect(c.rpc_descs[:AnRpc]).to be_a(GRPC::RpcDesc)
end
it 'adds a default service name' do
c = Class.new do
include GenericService
end
expect(c.service_name).to eq('GenericService')
end
it 'adds a default service name to subclasses' do
base = Class.new do
include GenericService
end
c = Class.new(base) do
end
expect(c.service_name).to eq('GenericService')
end
it 'adds the specified service name' do
c = Class.new do
include GenericService
self.service_name = 'test.service.TestService'
end
expect(c.service_name).to eq('test.service.TestService')
end
it 'adds the specified service name to subclasses' do
base = Class.new do
include GenericService
self.service_name = 'test.service.TestService'
end
c = Class.new(base) do
end
expect(c.service_name).to eq('test.service.TestService')
end
end
describe '#include' do
it 'raises if #rpc is missing an arg' do
blk = proc do
Class.new do
include GenericService
rpc :AnRpc, GoodMsg
end
end
expect(&blk).to raise_error ArgumentError
blk = proc do
Class.new do
include GenericService
rpc :AnRpc
end
end
expect(&blk).to raise_error ArgumentError
end
describe 'when #rpc args are incorrect' do
it 'raises if an arg does not have the marshal or unmarshal methods' do
blk = proc do
Class.new do
include GenericService
rpc :AnRpc, GoodMsg, Object
end
end
expect(&blk).to raise_error ArgumentError
end
it 'raises if a type arg only has the marshal method' do
# a bad message type with only a marshal method
class OnlyMarshal
def marshal(o)
o
end
end
blk = proc do
Class.new do
include GenericService
rpc :AnRpc, OnlyMarshal, GoodMsg
end
end
expect(&blk).to raise_error ArgumentError
end
it 'raises if a type arg only has the unmarshal method' do
# a bad message type with only an unmarshal method
class OnlyUnmarshal
def self.ummarshal(o)
o
end
end
blk = proc do
Class.new do
include GenericService
rpc :AnRpc, GoodMsg, OnlyUnmarshal
end
end
expect(&blk).to raise_error ArgumentError
end
end
it 'is ok for services that expect the default {un,}marshal methods' do
blk = proc do
Class.new do
include GenericService
rpc :AnRpc, GoodMsg, GoodMsg
end
end
expect(&blk).not_to raise_error
end
it 'is ok for services that override the default {un,}marshal methods' do
blk = proc do
Class.new do
include GenericService
self.marshal_class_method = :encode
self.unmarshal_class_method = :decode
rpc :AnRpc, EncodeDecodeMsg, EncodeDecodeMsg
end
end
expect(&blk).not_to raise_error
end
end
describe '#rpc_stub_class' do
it 'generates a client class that defines any of the rpc methods' do
s = Class.new do
include GenericService
rpc :AnRpc, GoodMsg, GoodMsg
rpc :AServerStreamer, GoodMsg, stream(GoodMsg)
rpc :AClientStreamer, stream(GoodMsg), GoodMsg
rpc :ABidiStreamer, stream(GoodMsg), stream(GoodMsg)
end
client_class = s.rpc_stub_class
expect(client_class.instance_methods).to include(:an_rpc)
expect(client_class.instance_methods).to include(:a_server_streamer)
expect(client_class.instance_methods).to include(:a_client_streamer)
expect(client_class.instance_methods).to include(:a_bidi_streamer)
end
describe 'the generated instances' do
it 'can be instanciated with just a hostname and credentials' do
s = Class.new do
include GenericService
rpc :AnRpc, GoodMsg, GoodMsg
rpc :AServerStreamer, GoodMsg, stream(GoodMsg)
rpc :AClientStreamer, stream(GoodMsg), GoodMsg
rpc :ABidiStreamer, stream(GoodMsg), stream(GoodMsg)
end
client_class = s.rpc_stub_class
blk = proc do
client_class.new('fakehostname', :this_channel_is_insecure)
end
expect(&blk).not_to raise_error
end
it 'has the methods defined in the service' do
s = Class.new do
include GenericService
rpc :AnRpc, GoodMsg, GoodMsg
rpc :AServerStreamer, GoodMsg, stream(GoodMsg)
rpc :AClientStreamer, stream(GoodMsg), GoodMsg
rpc :ABidiStreamer, stream(GoodMsg), stream(GoodMsg)
end
client_class = s.rpc_stub_class
o = client_class.new('fakehostname', :this_channel_is_insecure)
expect(o.methods).to include(:an_rpc)
expect(o.methods).to include(:a_bidi_streamer)
expect(o.methods).to include(:a_client_streamer)
expect(o.methods).to include(:a_bidi_streamer)
end
end
end
end
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