local tasty = require 'tasty'

local test = tasty.test_case
local group = tasty.test_group
local assert = tasty.assert

function os_is_windows ()
  return package.config:sub(1,1) == '\\'
end

return {
  group 'pipe' {
    test('external string processing', function ()
      if os_is_windows() then
        local pipe_result = pandoc.pipe('find', {'hi'}, 'hi')
        assert.are_equal('hi', pipe_result:match '%a+')
      else
        local pipe_result = pandoc.pipe('tr', {'a', 'b'}, 'abc')
        assert.are_equal('bbc', pipe_result:match '%a+')
      end
    end),
    test('failing pipe', function ()
      if os_is_windows() then
        local success, err = pcall(pandoc.pipe, 'find', {'/a'}, 'hi')
        assert.is_falsy(success)
        assert.are_equal('find', err.command)
        assert.is_truthy(err.error_code ~= 0)
      else
        local success, err = pcall(pandoc.pipe, 'false', {}, 'abc')
        assert.is_falsy(success)
        assert.are_equal('false', err.command)
        assert.are_equal(1, err.error_code)
        assert.are_equal('', err.output)
      end
    end)
  },

  group 'read' {
    test('Markdown', function ()
      local valid_markdown = '*Hello*, World!\n'
      local expected = pandoc.Pandoc({
          pandoc.Para {
            pandoc.Emph { pandoc.Str 'Hello' },
            pandoc.Str ',',
            pandoc.Space(),
            pandoc.Str 'World!'
          }
      })
      assert.are_same(expected, pandoc.read(valid_markdown))
    end),
    test('failing read', function ()
      assert.error_matches(
        function () pandoc.read('foo', 'nosuchreader') end,
        'Unknown reader: nosuchreader'
      )
    end)
  },
}