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lua_script_cache_spec.rb
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lua_script_cache_spec.rb
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require 'spec_helper'
require 'qless'
require 'qless/lua_script_cache'
module Qless
describe LuaScriptCache do
def redis_double(db_num)
fire_double("Redis", id: "redis://foo:1234/#{db_num}").tap do |redis|
redis.stub(:script) do |script_contents|
script_contents
end
end
end
let(:redis_1a) { redis_double(1) }
let(:redis_1b) { redis_double(1) }
let(:redis_2) { redis_double(2) }
let(:cache) { LuaScriptCache.new }
before do
File.stub(:read) do |file_name|
file_name.split('/').last
end
end
it 'loads each different script' do
redis_1a.should_receive(:script).twice
script_1 = cache.script_for("foo", redis_1a)
script_2 = cache.script_for("bar", redis_1a)
expect(script_1).to be_a(LuaScript)
expect(script_2).to be_a(LuaScript)
expect(script_1.name).to eq("foo")
expect(script_2.name).to eq("bar")
end
it 'loads the same script each time it is needed in a different redis server' do
redis_1a.should_receive(:script).once
redis_2.should_receive(:script).once
cache.script_for("foo", redis_1a)
cache.script_for("foo", redis_2)
end
it 'loads a script only once when it is needed by multiple connections to the same redis server' do
redis_1a.should_receive(:script).once
redis_1b.should_not_receive(:script)
cache.script_for("foo", redis_1a)
cache.script_for("foo", redis_1b)
end
end
end