This PR was merged into the 4.2-dev branch.Discussion----------Mock date() in ClockMock| Q             | A| ------------- | ---| Branch?       | master| Bug fix?      | no| New feature?  | yes| BC breaks?    | no (In case `date()` is mocked in some other way execution would fail because of redeclaration. Could be avoided with an extra `function_exists()` check. WDYT?)| Deprecations? | no| Tests pass?   | yes| Fixed tickets || License       | MIT| Doc PR        |As to the [PHP documentation](https://secure.php.net/manual/en/function.date.php) `date()` uses the value of `time()` as timestamp if none is given. `date()` has to be mocked in ClockMock as well for this still being true, otherwise `\time()` is used as default.BTW: The msec part of `microtime()` has 8 fractional digits on my system, ClockMock returns only 6...Commits-------e8ba79a [Bridge/PhpUnit] Mock date() in ClockMock

…ont)This PR was merged into the 2.8 branch.Discussion----------[PHPUnitBridge] Fix ClockMock microtime() format| Q             | A| ------------- | ---| Branch?       | 2.8 <!-- see below -->| Bug fix?      | yes| New feature?  | no <!-- don't forget to update src/**/CHANGELOG.md files -->| BC breaks?    | no     <!-- seehttps://symfony.com/bc -->| Deprecations? | yes/no <!-- don't forget to update UPGRADE-*.md and src/**/CHANGELOG.md files -->| Tests pass?   | no    <!-- please add some, will be required by reviewers -->| Fixed tickets |    <!-- #-prefixed issue number(s), if any -->| License       | MIT| Doc PR        | <!-- required for new features -->This is a follow-up PR to#27890 to fix the `microtime` precision, it should be 8 decimals instead of the current 6 (seehttps://3v4l.org/GYacF)The problem now is that due to the new tests the whole testsuite will fail if run from the main directory, as hhvm and 5.4 targets are doing, due to phpunit using the wrong `ClockMock` class. Tests for 7.1 and 7.2 pass because they `cd` into the component directory.Commits-------e3732b6 [PHPUnitBridge] Fix microtime() format