local prompt = require "ivy.prompt"
local vim_mock = require "ivy.vim_mock"

before_each(function()
  vim_mock.reset()
  prompt.destroy()
end)

-- Input a list of strings into the prompt
local input = function(input_table)
  for index = 1, #input_table do
    prompt.input(input_table[index])
  end
end

-- Asserts the prompt contains the correct value
local assert_prompt = function(t, expected)
  local text = prompt.text()
  if text ~= expected then
    t.error("The prompt text should be '" .. expected .. "' found '" .. text .. "'")
  end
end

it("starts with empty text", function(t)
  if prompt.text() ~= "" then
    t.error "The prompt should start with empty text"
  end
end)

it("can input some text", function(t)
  input { "A", "d", "e" }
  assert_prompt(t, "Ade")
end)

it("can delete a char", function(t)
  input { "A", "d", "e", "BACKSPACE" }
  assert_prompt(t, "Ad")
end)

it("will reset the text", function(t)
  input { "A", "d", "e" }
  prompt.set "New"
  assert_prompt(t, "New")
end)

it("can move around the a word", function(t)
  input { "P", "r", "o", "p", "t", "LEFT", "LEFT", "LEFT", "RIGHT", "m" }
  assert_prompt(t, "Prompt")
end)

it("can delete a word", function(t)
  prompt.set "Ade Attwood"
  input { "DELETE_WORD" }
  assert_prompt(t, "Ade")
end)

it("can delete a word in the middle", function(t)
  prompt.set "Ade middle A"
  input { "LEFT", "LEFT", "DELETE_WORD" }
  assert_prompt(t, "Ade A")
end)