#!/usr/bin/env ruby
# encoding: UTF-8

$: << File.dirname(__FILE__)

require 'helper'

class OjWriter < Minitest::Test

  def setup
    @default_options = Oj.default_options
  end

  def teardown
    Oj.default_options = @default_options
  end

  def test_string_writer_empty_array
    w = Oj::StringWriter.new(:indent => 0)
    w.push_array()
    w.pop()
    assert_equal("[]\n", w.to_s)
  end

  def test_string_writer_nested_array
    w = Oj::StringWriter.new(:indent => 0)
    w.push_array()
    w.push_array()
    w.pop()
    w.push_array()
    w.push_array()
    w.pop()
    w.pop()
    w.push_array()
    w.pop()
    w.pop()
    assert_equal("[[],[[]],[]]\n", w.to_s)
  end

  def test_string_writer_empty_object
    w = Oj::StringWriter.new(:indent => 0)
    w.push_object()
    w.pop()
    assert_equal("{}\n", w.to_s)
  end

  def test_string_writer_push_null_value_with_key
    w = Oj::StringWriter.new(:indent => 0, :mode => :compat)
    w.push_object()
    w.push_value(nil, 'nothing')
    w.pop()
    assert_equal(%|{"nothing":null}\n|, w.to_s)
  end

  def test_string_writer_nested_object
    w = Oj::StringWriter.new(:indent => 0)
    w.push_object()
    w.push_object("a1")
    w.pop()
    w.push_object("a2")
    w.push_object("b")
    w.pop()
    w.pop()
    w.push_object("a3")
    w.pop()
    w.pop()
    assert_equal(%|{"a1":{},"a2":{"b":{}},"a3":{}}\n|, w.to_s)
  end

  def test_string_writer_nested_key
    w = Oj::StringWriter.new(:indent => 0)
    w.push_object()
    w.push_key('a1')
    w.push_object()
    w.pop()
    w.push_key('a2')
    w.push_object('x')
    w.push_object('b')
    w.pop()
    w.pop()
    w.push_key('a3')
    w.push_object()
    w.push_key('a4')
    w.push_value(37)
    w.pop()
    w.pop()
    assert_equal(%|{"a1":{},"a2":{"b":{}},"a3":{"a4":37}}\n|, w.to_s)
  end

  def test_string_writer_value_array
    w = Oj::StringWriter.new(:indent => 2)
    w.push_array()
    w.push_value(7)
    w.push_value(7.3)
    w.push_value(true)
    w.push_value(nil)
    w.push_value("a string")
    w.push_value({'a' => 65})
    w.push_value([1,2])
    w.pop()
    assert_equal(%|[
  7,
  7.3,
  true,
  null,
  "a string",
  {
    "a":65
  },
  [
    1,
    2
  ]
]
|, w.to_s)
  end

  def test_string_writer_block
    w = Oj::StringWriter.new(:indent => 0)
    w.push_object() {
      w.push_object("a1") {
        w.push_value(7, 'a7')
      }
      w.push_array("a2") {
        w.push_value('x')
        w.push_value(3)
      }
    }
    assert_equal(%|{"a1":{"a7":7},"a2":["x",3]}\n|, w.to_s)
  end

  def test_string_writer_json
    w = Oj::StringWriter.new(:indent => 0)
    w.push_array()
    w.push_json('7')
    w.push_json('true')
    w.push_json(%|"a string"|)
    w.push_object()
    w.push_json('{"a":65}', 'x')
    w.pop()
    w.pop()
    assert_equal(%|[7,true,"a string",{"x":{"a":65}}]\n|, w.to_s)
  end

  def test_string_writer_pop_excess
    w = Oj::StringWriter.new(:indent => 0)
    begin
      w.push_object() {
        w.push_key('key')
      }
    rescue Exception
      assert(true)
      return
    end
    assert(false, "*** expected an exception")
  end

  def test_string_writer_array_key
    w = Oj::StringWriter.new(:indent => 0)
    begin
      w.push_array() {
        w.push_key('key')
        w.push_value(7)
      }
    rescue Exception
      assert(true)
      return
    end
    assert(false, "*** expected an exception")
  end

  def test_string_writer_pop_with_key
    w = Oj::StringWriter.new(:indent => 0)
    begin
      w.pop()
    rescue Exception
      assert(true)
      return
    end
    assert(false, "*** expected an exception")
  end

  def test_string_writer_obj_no_key
    w = Oj::StringWriter.new(:indent => 0)
    w.push_object()
    begin
      w.push_value(59)
    rescue Exception
      assert(true)
      return
    end
    assert(false, "*** expected an exception")
  end

  def test_string_writer_deep
    cnt = 1000
    w = Oj::StringWriter.new(:indent => 0)
    cnt.times do
      w.push_array()
    end
    cnt.times do
      w.pop()
    end
    # if no exception then passed
    assert(true)
  end

  def test_string_writer_pop_all
    w = Oj::StringWriter.new(:indent => 0)
    w.push_object()
    w.push_object("a1")
    w.pop()
    w.push_array("a2")
    w.push_value(3)
    w.push_array()
    w.pop_all()
    assert_equal(%|{"a1":{},"a2":[3,[]]}\n|, w.to_s)
  end

  def test_string_writer_reset
    w = Oj::StringWriter.new(:indent => 0)
    w.push_array()
    w.pop()
    w.reset()
    assert_equal('', w.to_s)
  end

  # Stream Writer

  def test_stream_writer_empty_array
    output = StringIO.open("", "w+")
    w = Oj::StreamWriter.new(output, :indent => 0)
    w.push_array()
    w.pop()
    assert_equal("[]\n", output.string())
  end

  def test_stream_writer_mixed_stringio
    output = StringIO.open("", "w+")
    w = Oj::StreamWriter.new(output, :indent => 0)
    w.push_object()
    w.push_object("a1")
    w.pop()
    w.push_object("a2")
    w.push_array("b")
    w.push_value(7)
    w.push_value(true)
    w.push_value("string")
    w.pop()
    w.pop()
    w.push_object("a3")
    w.pop()
    w.pop()
    assert_equal(%|{"a1":{},"a2":{"b":[7,true,"string"]},"a3":{}}\n|, output.string())
  end

  def test_stream_writer_mixed_file
    filename = File.join(File.dirname(__FILE__), 'open_file_test.json')
    File.open(filename, "w") do |f|
      w = Oj::StreamWriter.new(f, :indent => 0)
      w.push_object()
      w.push_object("a1")
      w.pop()
      w.push_object("a2")
      w.push_array("b")
      w.push_value(7)
      w.push_value(true)
      w.push_value("string")
      w.pop()
      w.pop()
      w.push_object("a3")
      w.pop()
      w.pop()
    end
    content = File.read(filename)
    assert_equal(%|{"a1":{},"a2":{"b":[7,true,"string"]},"a3":{}}\n|, content)
  end

  def test_stream_writer_nested_key_object
    output = StringIO.open("", "w+")
    w = Oj::StreamWriter.new(output, :indent => 0)
    w.push_object()
    w.push_key('a1')
    w.push_object()
    w.pop()
    w.push_key('a2')
    w.push_object('x')
    w.push_object('b')
    w.pop()
    w.pop()
    w.push_key('a3')
    w.push_object()
    w.push_key('a4')
    w.push_value(37)
    w.pop()
    w.pop()
    assert_equal(%|{"a1":{},"a2":{"b":{}},"a3":{"a4":37}}\n|, output.string())
  end

  def test_stream_writer_push_null_value_with_key
    output = StringIO.open("", "w+")
    w = Oj::StreamWriter.new(output, :indent => 0)
    w.push_object()
    w.push_value(nil, 'nothing')
    w.pop()
    assert_equal(%|{"nothing":null}\n|, output.string())
  end
end # OjWriter