mirror of
https://github.com/discourse/discourse.git
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7196613e2e
Duplicated specs, incorrect descriptions, incorrect assertions, incorrect filenames, old todo
279 lines
7.7 KiB
Ruby
279 lines
7.7 KiB
Ruby
# frozen_string_literal: true
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RSpec.describe DiscourseRedis do
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it "ignore_readonly returns nil from a pure exception" do
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result = DiscourseRedis.ignore_readonly { raise Redis::CommandError.new("READONLY") }
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expect(result).to eq(nil)
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end
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describe "redis commands" do
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let(:raw_redis) { Redis.new(DiscourseRedis.config) }
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before { raw_redis.flushdb }
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after { raw_redis.flushdb }
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describe "pipelined / multi" do
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let(:redis) { DiscourseRedis.new }
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it "should support multi commands" do
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val =
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redis.multi do |transaction|
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transaction.set "foo", "bar"
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transaction.set "bar", "foo"
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transaction.get "bar"
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end
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expect(raw_redis.get("foo")).to eq(nil)
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expect(raw_redis.get("bar")).to eq(nil)
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expect(redis.get("foo")).to eq("bar")
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expect(redis.get("bar")).to eq("foo")
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expect(val).to eq(%w[OK OK foo])
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end
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it "should support pipelined commands" do
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set, incr = nil
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val =
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redis.pipelined do |pipeline|
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set = pipeline.set "foo", "baz"
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incr = pipeline.incr "baz"
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end
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expect(val).to eq(["OK", 1])
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expect(set.value).to eq("OK")
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expect(incr.value).to eq(1)
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expect(raw_redis.get("foo")).to eq(nil)
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expect(raw_redis.get("baz")).to eq(nil)
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expect(redis.get("foo")).to eq("baz")
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expect(redis.get("baz")).to eq("1")
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end
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it "should noop pipelined commands against a readonly redis" do
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redis.without_namespace.expects(:pipelined).raises(Redis::CommandError.new("READONLY"))
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set, incr = nil
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val =
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redis.pipelined do |pipeline|
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set = pipeline.set "foo", "baz"
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incr = pipeline.incr "baz"
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end
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expect(val).to eq(nil)
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expect(redis.get("foo")).to eq(nil)
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expect(redis.get("baz")).to eq(nil)
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end
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it "should noop multi commands against a readonly redis" do
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redis.without_namespace.expects(:multi).raises(Redis::CommandError.new("READONLY"))
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val =
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redis.multi do |transaction|
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transaction.set "foo", "bar"
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transaction.set "bar", "foo"
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transaction.get "bar"
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end
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expect(val).to eq(nil)
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expect(redis.get("foo")).to eq(nil)
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expect(redis.get("bar")).to eq(nil)
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end
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end
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describe "when namespace is enabled" do
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let(:redis) { DiscourseRedis.new }
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it "should append namespace to the keys" do
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raw_redis.set("default:key", 1)
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raw_redis.set("test:key2", 1)
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raw_redis.set("default:key3", 1)
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expect(redis.keys).to include("key")
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expect(redis.keys).to_not include("key2")
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expect(redis.scan_each.to_a).to contain_exactly("key", "key3")
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redis.del("key", "key3")
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expect(raw_redis.get("default:key")).to eq(nil)
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expect(raw_redis.get("default:key3")).to eq(nil)
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expect(redis.scan_each.to_a).to eq([])
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raw_redis.set("default:key1", "1")
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raw_redis.set("default:key2", "2")
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expect(redis.mget("key1", "key2")).to eq(%w[1 2])
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expect(redis.scan_each.to_a).to contain_exactly("key1", "key2")
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end
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end
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describe "#sadd?" do
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it "should send the right command with the right key prefix to redis" do
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redis = DiscourseRedis.new
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redis.without_namespace.expects(:sadd?).with("default:testset", "1", anything)
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redis.sadd?("testset", "1")
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end
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end
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describe "#srem?" do
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it "should send the right command with the right key prefix to redis" do
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redis = DiscourseRedis.new
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redis.without_namespace.expects(:srem?).with("default:testset", "1", anything)
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redis.srem?("testset", "1")
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end
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end
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describe "when namespace is disabled" do
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let(:redis) { DiscourseRedis.new(nil, namespace: false) }
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it "should not append any namespace to the keys" do
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raw_redis.set("default:key", 1)
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raw_redis.set("test:key2", 1)
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expect(redis.keys).to include("default:key", "test:key2")
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raw_redis.set("key1", "1")
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raw_redis.set("key2", "2")
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expect(redis.mget("key1", "key2")).to eq(%w[1 2])
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redis.del("key1", "key2")
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expect(redis.mget("key1", "key2")).to eq([nil, nil])
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end
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it "should noop a readonly redis" do
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expect(Discourse.recently_readonly?).to eq(false)
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redis.without_namespace.expects(:set).raises(Redis::CommandError.new("READONLY"))
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redis.set("key", 1)
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expect(Discourse.recently_readonly?).to eq(true)
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end
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end
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describe "#eval" do
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it "keys and arvg are passed correcty" do
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keys = %w[key1 key2]
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argv = %w[arg1 arg2]
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expect(Discourse.redis.eval("return { KEYS, ARGV };", keys: keys, argv: argv)).to eq(
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[keys, argv],
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)
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expect(Discourse.redis.eval("return { KEYS, ARGV };", keys, argv: argv)).to eq([keys, argv])
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expect(Discourse.redis.eval("return { KEYS, ARGV };", keys, argv)).to eq([keys, argv])
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end
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end
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describe "#evalsha" do
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it "keys and arvg are passed correcty" do
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keys = %w[key1 key2]
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argv = %w[arg1 arg2]
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script = "return { KEYS, ARGV };"
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Discourse.redis.script(:load, script)
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sha = Digest::SHA1.hexdigest(script)
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expect(Discourse.redis.evalsha(sha, keys: keys, argv: argv)).to eq([keys, argv])
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expect(Discourse.redis.evalsha(sha, keys, argv: argv)).to eq([keys, argv])
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expect(Discourse.redis.evalsha(sha, keys, argv)).to eq([keys, argv])
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end
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end
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end
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describe DiscourseRedis::EvalHelper do
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it "works" do
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helper = DiscourseRedis::EvalHelper.new <<~LUA
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return 'hello world'
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LUA
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expect(helper.eval(Discourse.redis)).to eq("hello world")
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end
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it "works with arguments" do
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helper = DiscourseRedis::EvalHelper.new <<~LUA
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return ARGV[1]..ARGV[2]..KEYS[1]..KEYS[2]
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LUA
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expect(helper.eval(Discourse.redis, %w[key1 key2], %w[arg1 arg2])).to eq("arg1arg2key1key2")
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end
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it "uses evalsha correctly" do
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redis_proxy =
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Class
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.new do
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attr_reader :calls
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def method_missing(meth, *args, **kwargs, &block)
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@calls ||= []
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@calls.push(meth)
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Discourse.redis.public_send(meth, *args, **kwargs, &block)
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end
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end
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.new
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Discourse.redis.call("SCRIPT", "FLUSH", "SYNC")
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helper = DiscourseRedis::EvalHelper.new <<~LUA
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return 'hello world'
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LUA
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expect(helper.eval(redis_proxy)).to eq("hello world")
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expect(helper.eval(redis_proxy)).to eq("hello world")
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expect(helper.eval(redis_proxy)).to eq("hello world")
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expect(redis_proxy.calls).to eq(%i[evalsha eval evalsha evalsha])
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end
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end
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describe ".new_redis_store" do
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let(:cache) { Cache.new(namespace: "foo") }
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let(:store) { DiscourseRedis.new_redis_store }
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before do
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cache.redis.del("key")
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store.delete("key")
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end
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it "can store stuff" do
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store.fetch("key") { "key in store" }
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r = store.read("key")
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expect(r).to eq("key in store")
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end
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it "doesn't collide with our Cache" do
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store.fetch("key") { "key in store" }
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cache.fetch("key") { "key in cache" }
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r = store.read("key")
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expect(r).to eq("key in store")
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end
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it "can be cleared without clearing our cache" do
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cache.clear
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store.clear
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store.fetch("key") { "key in store" }
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cache.fetch("key") { "key in cache" }
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store.clear
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expect(store.read("key")).to eq(nil)
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expect(cache.fetch("key")).to eq("key in cache")
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end
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end
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end
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