@doc に書いた iex を用いたサンプルコードはテストできる
...> も再現する必要がある
goh@goh% mix test test/doc_test.exs
Compiling 2 files (.ex)
.....
Finished in 0.1 seconds
5 doctests, 0 failures
Randomized with seed 136749
goh@goh% mix test
................
Finished in 0.2 seconds
7 doctests, 9 tests, 0 failures
Randomized with seed 269476
エラーが発生するように Issues.TableFormatter.printable/1 のサンプルコードを変更
iex> Issues.TableFormatter.pritable(99)
"99.0"
goh@goh% mix test test/doc_test.exs
Compiling 2 files (.ex)
....
1) doctest Issues.TableFormatter.printable/1 (2) (DocTest)
test/doc_test.exs:3
Doctest failed
code: Issues.TableFormatter.printable(99) === "99.0"
left: "99"
right: "99.0"
stacktrace:
lib/issues/table_formatter.ex:46: Issues.TableFormatter (module)
Finished in 0.1 seconds
5 doctests, 1 failure
Randomized with seed 632235