require 'spec_helper'

describe "#pttl(key)" do
  before do
    @key = 'mock-redis-test:persist'
    @redises.set(@key, 'spork')
  end

  it "returns -1 for a key with no expiration" do
    @redises.pttl(@key).should == -1
  end

  it "returns -2 for a key that does not exist" do
    @redises.pttl('mock-redis-test:nonesuch').should == -2
  end

  it "stringifies key" do
    @redises.expire(@key, 8)
    # Don't check against Redis since millisecond timing differences are likely
    @redises.send_without_checking(:pttl, @key.to_sym).should > 0
  end

  context "[mock only]" do
    # These are mock-only since we can't actually manipulate time in
    # the real Redis.

    before(:all) do
      @mock = @redises.mock
    end

    before do
      @now = Time.now.round
      Time.stub!(:now).and_return(@now)
    end

    it "gives you the key's remaining lifespan in milliseconds" do
      @mock.expire(@key, 5)
      @mock.pttl(@key).should == 5000
    end
  end
end