require "spec_helper"
require "logstash/filters/json"
require "logstash/timestamp"

describe LogStash::Filters::Json do

  describe "parse message into the event" do
    config <<-CONFIG
      filter {
        json {
          # Parse message as JSON
          source => "message"
        }
      }
    CONFIG

    sample '{ "hello": "world", "list": [ 1, 2, 3 ], "hash": { "k": "v" } }' do
      insist { subject["hello"] } == "world"
      insist { subject["list" ].to_a } == [1,2,3] # to_a for JRuby + JrJacksom which creates Java ArrayList
      insist { subject["hash"] } == { "k" => "v" }
    end
  end

  describe "parse message into a target field" do
    config <<-CONFIG
      filter {
        json {
          # Parse message as JSON, store the results in the 'data' field'
          source => "message"
          target => "data"
        }
      }
    CONFIG

    sample '{ "hello": "world", "list": [ 1, 2, 3 ], "hash": { "k": "v" } }' do
      insist { subject["data"]["hello"] } == "world"
      insist { subject["data"]["list" ].to_a } == [1,2,3] # to_a for JRuby + JrJacksom which creates Java ArrayList
      insist { subject["data"]["hash"] } == { "k" => "v" }
    end
  end

  describe "tag invalid json" do
    config <<-CONFIG
      filter {
        json {
          # Parse message as JSON, store the results in the 'data' field'
          source => "message"
          target => "data"
        }
      }
    CONFIG

    sample "invalid json" do
      insist { subject["tags"] }.include?("_jsonparsefailure")
    end
  end

  describe "fixing @timestamp (#pull 733)" do
    config <<-CONFIG
      filter {
        json {
          source => "message"
        }
      }
    CONFIG

    sample "{ \"@timestamp\": \"2013-10-19T00:14:32.996Z\" }" do
      insist { subject["@timestamp"] }.is_a?(LogStash::Timestamp)
      insist { LogStash::Json.dump(subject["@timestamp"]) } == "\"2013-10-19T00:14:32.996Z\""
    end
  end

  describe "source == target" do
    config <<-CONFIG
      filter {
        json {
          source => "example"
          target => "example"
        }
      }
    CONFIG

    sample({ "example" => "{ \"hello\": \"world\" }" }) do
      insist { subject["example"] }.is_a?(Hash)
      insist { subject["example"]["hello"] } == "world"
    end
  end

end