Files
elixir-koans/lib/display.ex
2016-04-20 11:07:19 +01:00

89 lines
2.1 KiB
Elixir

defmodule Display do
alias IO.ANSI
@current_dir File.cwd!
@no_value :ex_unit_no_meaningful_value
def invalid_koan(koan, modules) do
koans_names = module_names(modules)
IO.puts("Did not find koan #{name(koan)} in " <> koans_names )
exit(:normal)
end
defp module_names(modules) do
modules
|> Enum.map(&Atom.to_string/1)
|> Enum.map(&name/1)
|> Enum.join(", ")
|> format_red
end
defp name("Elixir." <> module), do: module
defp name(module), do: name(Atom.to_string(module))
def show_failure(failure, module, name) do
IO.puts("Now meditate upon #{format_module(module)}")
IO.puts("---------------------------------------")
IO.puts(name)
IO.puts(format_failure(failure))
end
def show_compile_error(error) do
IO.puts("")
format_error(error) |> IO.puts
end
def considering(module) do
IO.puts("Considering #{format_module(module)}...")
module
end
def clear_screen do
if Options.clear_screen? do
IO.puts(ANSI.clear)
IO.puts(ANSI.home)
end
end
defp format_failure(%{error: %ExUnit.AssertionError{expr: @no_value, message: message}, file: file, line: line}) do
"""
#{format_cyan("Assertion failed in #{file}:#{line}")}
#{format_red(message)}
"""
end
defp format_failure(%{error: %ExUnit.AssertionError{expr: expr}, file: file, line: line}) do
format_assertion_error(expr, file, line)
end
defp format_assertion_error(error, file, line) do
"""
#{format_cyan("Assertion failed in #{file}:#{line}")}
#{format_red(Macro.to_string(error))}
"""
end
defp format_failure(%{error: error, file: file, line: line}) do
"""
#{format_cyan("Error in #{file}:#{line}")}
#{format_error(error)}
"""
end
defp format_error(error) do
trace = System.stacktrace |> Enum.take(2)
format_red(Exception.format(:error, error, trace))
end
defp format_red(str) do
Enum.join([ANSI.red, str, ANSI.reset], "")
end
defp format_cyan(str) do
Enum.join([ANSI.cyan, str, ANSI.reset], "")
end
defp format_module(module) do
Module.split(module) |> List.last
end
end