メール関連の PHPUnit 修正

[seasoftjapan]

• Docker Compose 構成でも PHPUnit のメール関連のテストを実行する。 適用前後のテスト結果抜粋:

  -Tests: 1218, Assertions: 1433, Skipped: 17, Incomplete: 4.
  +Tests: 1218, Assertions: 1447, Skipped: 9, Incomplete: 4.

• fixed #997
  • 繰り返しを削除した。

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 55.63%. Comparing base (fc5a36a) to head (49e834e).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #998 +/- ## ======================================= Coverage 55.63% 55.63% ======================================= Files 75 75 Lines 8917 8917 ======================================= Hits 4961 4961 Misses 3956 3956 ``` | [Flag](https://app.codecov.io/gh/EC-CUBE/ec-cube2/pull/998/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=EC-CUBE) | Coverage Δ | | |---|---|---| | [tests](https://app.codecov.io/gh/EC-CUBE/ec-cube2/pull/998/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=EC-CUBE) | `55.63% <ø> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=EC-CUBE#carryforward-flags-in-the-pull-request-comment) to find out more.

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.