ivy.nvim/lua/ivy/window_test.lua

local vim_mock = require "ivy.vim_mock"
local window = require "ivy.window"

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

it("can initialize and destroy the window", function(t)
  window.initialize()

  t.assert_equal(10, window.get_buffer())
  t.assert_equal(10, window.buffer)

  window.destroy()
  t.assert_equal(nil, window.buffer)
end)

it("can set items", function(t)
  window.initialize()

  window.set_items { { content = "Line one" } }
  t.assert_equal("Line one", window.get_current_selection())
end)

it("will set the items when a string is passed in", function(t)
  window.initialize()

  local items =  table.concat({ "One", "Two", "Three" }, '\n')
  window.set_items(items)

  local lines = table.concat(vim_mock.get_lines()[window.buffer], "\n");
  t.assert_equal(items, lines)
end)