HellaRedis

# create
@redis =
  HellaRedis.new(
    timeout:  1,
    size:     5,
    redis_ns: "hella-redis-test",
    driver:   "ruby",
    url:      "redis://localhost:6379/0"
  ) # => HellaRedis:ConnectionPool instance

# it's actually a pool of connections
@redis.connection do |connection|
  # checks out a connection so you can do something with it
  # will check it back in once the block has run
end

ENV["HELLA_REDIS_TEST_MODE"] = "yes" # set to anything "truthy"

@redis_spy =
  HellaRedis.new({
    timeout:  1,
    size:     5,
    redis_ns: "hella-redis-test",
    driver:   "ruby",
    url:      "redis://localhost:6379/0"
  }) # => HellaRedis::ConnectionPoolSpy instance

@redis_spy.connection do |connection|
  connection # => HellaRedis::ConnectionSpy instance
  connection.info
end

@redis_spy.calls.size # => 1
@redis_spy.calls.first.tap do |call|
  call.command # => :info
  call.args    # => nil
  call.block   # => nil
end

@redis_spy.connection_calls.size # => 1
@redis_spy.connection_calls.first.tap do |connection_call|
  connection_call.block # => block instance
end

Assert.stub(@redis_spy.connection_spy, :get).with("some-key"){ "some-value" }
value = @redis_spy.connection do |connection|
  connection.get("some_key")
end
assert_that("some-value").equals(value)
@redis_spy.calls.size # => 1 (unchanged b/c we stubbed the :get method)