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require "test_helper"
class GitHub::KVTest < Minitest::Test
def setup
ActiveRecord::Base.connection.execute("TRUNCATE `key_values`")
@kv = GitHub::KV.new { ActiveRecord::Base.connection }
GitHub::KV.reset
end
def teardown
GitHub::KV.reset
end
def test_config_configures_correctly
GitHub::KV.configure do |config|
config.table_name = "example_key_values"
end
assert_equal GitHub::KV.config.table_name, "example_key_values"
end
def test_config_resets_correctly
GitHub::KV.configure do |config|
config.table_name = "example_key_values"
end
GitHub::KV.reset
refute_equal GitHub::KV.config.table_name, "example_key_values"
assert_equal GitHub::KV.config.table_name, "key_values"
end
def test_initialize_without_connection
kv = GitHub::KV.new
assert_raises GitHub::KV::MissingConnectionError do
kv.get("foo").value!
end
end
def test_get_and_set
assert_nil @kv.get("foo").value!
@kv.set("foo", "bar")
assert_equal "bar", @kv.get("foo").value!
end
def test_get_set_literal
assert_nil @kv.get("foo").value!
@kv.set("foo", GitHub::SQL::BINARY("bar"))
assert_equal "bar", @kv.get("foo").value!
end
def test_mget_and_mset
assert_equal [nil, nil], @kv.mget(["a", "b"]).value!
@kv.mset({"a" => "1", "b" => "2"})
assert_equal ["1", "2"], @kv.mget(["a", "b"]).value!
assert_equal ["2", "1"], @kv.mget(["b", "a"]).value!
end
def test_get_and_set_case_insensitive
assert_nil @kv.get("foo").value!
@kv.set "foo", "lowercase"
assert_equal "lowercase", @kv.get("foo").value!
assert_equal "lowercase", @kv.get("FOO").value!
@kv.set "FOO", "uppercase"
assert_equal "uppercase", @kv.get("foo").value!
assert_equal "uppercase", @kv.get("FOO").value!
end
def test_get_failure
ActiveRecord::Base.connection.stubs(:select_all).raises(Errno::ECONNRESET)
result = @kv.get("foo")
refute_predicate result, :ok?
end
def test_set_failure
ActiveRecord::Base.connection.stubs(:insert).raises(Errno::ECONNRESET)
assert_raises GitHub::KV::UnavailableError do
@kv.set("foo", "bar")
end
end
def test_increment_failure
ActiveRecord::Base.connection.stubs(:insert).raises(Errno::ECONNRESET)
assert_raises GitHub::KV::UnavailableError do
@kv.increment("foo")
end
end
def test_increment_default_value
result = @kv.increment("foo")
assert_equal 1, result
assert_nil @kv.ttl("foo").value!
end
def test_increment_large_value
result = @kv.increment("foo", amount: 10000)
assert_equal 10000, result
end
def test_increment_negative
amount = -1
result = @kv.increment("foo", amount: amount)
assert_equal amount, result
end
def test_increment_negative_to_0
@kv.set("foo", "1")
result = @kv.increment("foo", amount: -1)
assert_equal 0, result
end
def test_increment_multiple
@kv.increment("foo")
result = @kv.increment("foo")
assert_equal 2, result
end
def test_increment_multiple_different_values
@kv.increment("foo")
result = @kv.increment("foo", amount: 2)
assert_equal 3, result
end
def test_increment_existing
@kv.set("foo", "1")
result = @kv.increment("foo")
assert_equal 2, result
end
def test_increment_overwrites_expired_value
@kv.set("foo", "100", expires: 1.hour.ago)
expires = 1.hour.from_now.utc
result = @kv.increment("foo", expires: expires)
assert_equal expires.to_i, @kv.ttl("foo").value!.to_i
assert_equal 1, result
end
def test_increment_overwrites_expired_value_from_incrementing
@kv.increment("foo", expires: 1.hour.ago)
expires = 1.hour.from_now.utc
result = @kv.increment("foo", expires: expires)
assert_equal 1, result
assert_equal expires.to_i, @kv.ttl("foo").value!.to_i
end
def test_increment_overwrites_expired_with_nil
@kv.increment("foo", expires: 1.hour.ago)
result = @kv.increment("foo")
assert_equal 1, result
assert_nil @kv.ttl("foo").value!
end
def test_increment_sets_expires
expires = 1.hour.from_now.utc
@kv.increment("foo", expires: expires)
assert_equal expires.to_i, @kv.ttl("foo").value!.to_i
end
def test_increment_sets_expires_only_on_insert
expires = 1.hour.from_now.utc
result = @kv.increment("foo", expires: expires, touch_on_insert: true)
assert_equal 1, result
result = @kv.increment("foo", expires: 3.hours.from_now.utc, touch_on_insert: true)
assert_equal 2, result
assert_equal expires.to_i, @kv.ttl("foo").value!.to_i
end
def test_increment_sets_expires_only_on_insert_for_existing
expires = 1.hour.from_now.utc
@kv.set("foo", "100", expires: expires)
result = @kv.increment("foo", expires: 3.hours.from_now.utc, touch_on_insert: true)
assert_equal 101, result
assert_equal expires.to_i, @kv.ttl("foo").value!.to_i
end
def test_increment_updates_expires
expires = 2.hours.from_now.utc
@kv.set("foo", "100", expires: 1.hour.from_now)
result = @kv.increment("foo", expires: expires)
assert_equal 101, result
assert_equal expires.to_i, @kv.ttl("foo").value!.to_i
end
def test_increment_non_integer_key_value
@kv.set("foo", "bar")
assert_raises GitHub::KV::InvalidValueError do
@kv.increment("foo")
end
assert_equal "bar", @kv.get("foo").value!
end
def test_increment_only_accepts_integer_amounts_strings
assert_raises ArgumentError do
@kv.increment("foo", amount: "bar")
end
end
def test_increment_only_accepts_integer_amounts_integer
assert_raises ArgumentError do
@kv.increment("foo", amount: 0)
end
end
def test_increment_with_touch_expects_expires
assert_raises ArgumentError do
@kv.increment("foo", touch_on_insert: true)
end
end
def test_increment_with_touch_must_be_boolean
assert_raises ArgumentError do
@kv.increment("foo", touch_on_insert: "blahblah")
end
end
def test_exists
assert_equal false, @kv.exists("foo").value!
@kv.set("foo", "bar")
assert_equal true, @kv.exists("foo").value!
end
def test_mexists
@kv.set("foo", "bar")
assert_equal [true, false], @kv.mexists(["foo", "notfoo"]).value!
assert_equal [false, true], @kv.mexists(["notfoo", "foo"]).value!
end
def test_setnx
assert @kv.setnx("foo", "bar")
refute @kv.setnx("foo", "nope")
assert_equal "bar", @kv.get("foo").value!
end
def test_setnx_failure
ActiveRecord::Base.connection.stubs(:delete).raises(Errno::ECONNRESET)
assert_raises GitHub::KV::UnavailableError do
@kv.setnx("foo", "bar")
end
end
def test_del
@kv.set("foo", "bar")
@kv.del("foo")
assert_nil @kv.get("foo").value!
end
def test_del_failure
ActiveRecord::Base.connection.stubs(:delete).raises(Errno::ECONNRESET)
assert_raises GitHub::KV::UnavailableError do
@kv.del("foo")
end
end
def test_mdel
@kv.set("foo", "bar")
@kv.mdel(["foo", "notfoo"])
assert_nil @kv.get("foo").value!
assert_nil @kv.get("notfoo").value!
end
def test_set_with_expiry
# the Time.at dance is necessary because MySQL does not support sub-second
# precision in DATETIME values
expires = Time.at(1.hour.from_now.to_i).utc
@kv.set("foo", "bar", expires: expires)
assert_equal expires, GitHub::SQL.value(<<-SQL)
SELECT expires_at FROM key_values WHERE `key` = 'foo'
SQL
end
def test_setnx_with_expiry
expires = Time.at(1.hour.from_now.to_i).utc
@kv.setnx("foo", "bar", expires: expires)
assert_equal expires, GitHub::SQL.value(<<-SQL)
SELECT expires_at FROM key_values WHERE `key` = 'foo'
SQL
end
def test_get_respects_expiry
@kv.set("foo", "bar", expires: 1.hour.from_now)
assert_equal "bar", @kv.get("foo").value!
@kv.set("foo", "bar", expires: 1.hour.ago)
assert_nil @kv.get("foo").value!
end
def test_exists_respects_expiry
@kv.set("foo", "bar", expires: 1.hour.from_now)
assert @kv.exists("foo").value!
@kv.set("foo", "bar", expires: 1.hour.ago)
refute @kv.exists("foo").value!
end
def test_set_resets_expiry
@kv.set("foo", "bar", expires: 1.hour.from_now)
@kv.set("foo", "bar")
assert_nil GitHub::SQL.value(<<-SQL)
SELECT expires_at FROM key_values WHERE `key` = "foo"
SQL
end
def test_setnx_overwrites_expired_key
@kv.set("foo", "bar", expires: 1.hour.ago)
@kv.setnx("foo", "bar2")
assert_equal "bar2", @kv.get("foo").value!
end
def test_ttl
assert_nil @kv.ttl("foo-ttl").value!
# the Time.at dance is necessary because MySQL does not support sub-second
# precision in DATETIME values
expires = Time.at(1.hour.from_now.to_i).utc
@kv.set("foo-ttl", "bar", expires: expires)
assert_equal expires, @kv.ttl("foo-ttl").value!
end
def test_ttl_for_key_that_exists_but_is_expired
@kv.set("foo-ttl", "bar", expires: 1.hour.ago)
row_count = GitHub::SQL.value <<-SQL, key: "foo-ttl"
SELECT count(*) FROM key_values WHERE `key` = :key
SQL
assert_equal 1, row_count
assert_nil @kv.ttl("foo-ttl").value!
end
def test_mttl
assert_equal [nil, nil], @kv.mttl(["foo-ttl", "bar-ttl"]).value!
# the Time.at dance is necessary because MySQL does not support sub-second
# precision in DATETIME values
expires = Time.at(1.hour.from_now.to_i).utc
@kv.set("foo-ttl", "bar", expires: expires)
assert_equal [expires, nil], @kv.mttl(["foo-ttl", "bar-ttl"]).value!
assert_equal [nil, expires], @kv.mttl(["bar-ttl", "foo-ttl"]).value!
end
def test_type_checks_key
assert_raises TypeError do
@kv.get(0)
end
end
def test_length_checks_key
assert_raises GitHub::KV::KeyLengthError do
@kv.get("A" * 256)
end
end
def test_type_checks_value
assert_raises TypeError do
@kv.set("foo", 1)
end
end
def test_length_checks_value
assert_raises GitHub::KV::ValueLengthError do
@kv.set("foo", "A" * 65536)
end
assert_raises GitHub::KV::ValueLengthError do
@kv.set("foo", "💥" * 20000)
end
end
def test_timecop
with_local_time do
Timecop.freeze(1.month.ago) do
# setnx - currently unset
@kv.setnx("foo", "asdf", expires: 1.day.from_now.utc)
assert_equal "asdf", @kv.get("foo").value!
# setnx - currently expired
@kv.set("foo", "bar", expires: 1.day.ago.utc)
@kv.setnx("foo", "asdf", expires: 1.day.from_now.utc)
assert_equal "asdf", @kv.get("foo").value!
# set/get
@kv.set("foo", "bar", expires: 1.day.from_now.utc)
assert_equal "bar", @kv.get("foo").value!
# exists
assert_equal true, @kv.exists("foo").value!
# ttl
assert_equal 1.day.from_now.to_i, @kv.ttl("foo").value!.to_i
# mset/mget
@kv.mset({"foo" => "baz"}, expires: 1.day.from_now.utc)
assert_equal ["baz"], @kv.mget(["foo"]).value!
# increment
@kv.increment("foo-increment", expires: 1.day.from_now.utc)
assert_equal 1, @kv.get("foo-increment").value!.to_i
end
end
end
def with_local_time(&blk)
use_local_time_was = @kv.use_local_time
@kv.use_local_time = true
blk.call
ensure
@kv.use_local_time = use_local_time_was
end
end