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require "spec_helper"
describe Bunny::Channel, "#prefetch" do
let(:connection) do
c = Bunny.new(username: "bunny_gem", password: "bunny_password", vhost: "bunny_testbed")
c.start
c
end
after :each do
connection.close
end
context "with a positive integer < 65535" do
it "sets that prefetch level via basic.qos" do
ch = connection.create_channel
expect(ch.prefetch_count).not_to eq 10
expect(ch.prefetch_global).to be_nil
expect(ch.prefetch(10)).to be_instance_of(AMQ::Protocol::Basic::QosOk)
expect(ch.prefetch_count).to eq 10
expect(ch.prefetch_global).to be false
end
it "sets that prefetch global via basic.qos" do
ch = connection.create_channel
expect(ch.prefetch_count).not_to eq 42
expect(ch.prefetch_global).to be_nil
expect(ch.prefetch(42, true)).to be_instance_of(AMQ::Protocol::Basic::QosOk)
expect(ch.prefetch_count).to eq 42
expect(ch.prefetch_global).to be true
end
end
context "with a positive integer > 65535" do
it "raises an ArgumentError" do
ch = connection.create_channel
expect {
ch.prefetch(100_000)
}.to raise_error(
ArgumentError,
"prefetch count must be no greater than #{Bunny::Channel::MAX_PREFETCH_COUNT}, given: 100000"
)
end
end
context "with a negative integer" do
it "raises an ArgumentError" do
ch = connection.create_channel
expect {
ch.prefetch(-2)
}.to raise_error(
ArgumentError,
"prefetch count must be a positive integer, given: -2"
)
end
end
end
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