Difference or bug in 1.4.2 makes phpunit fail.

[ArturGoldyn]

Hi,
I've been working on phpunit and found out there's a difference or bug.
sebastianbergmann/phpunit#2664
With package sebastian/diff 1.4.1 phpunit passes, and with package sebastian/diff 1.4.2 it fails.

Difference causes the first two failures. (remaining errors appear because I don't have TeamCity)

[arturdev@localhost phpunit]$ ./phpunit
PHPUnit 6.2-g298838d by Sebastian Bergmann and contributors.

Runtime: PHP 7.0.18 with Xdebug 2.5.1
Configuration: /home/arturdev/projects/phpunit/phpunit.xml

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.S........................................................... 1464 / 1541 ( 95%)
.....................FF..........F........................... 1525 / 1541 ( 98%)
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Time: 37.03 seconds, Memory: 14.00MB

There were 5 failures:

1. PHPUnit\Framework\ConstraintTest::testConstraintIsEqual2 with data set #3 ('a\nb\nc\nd\ne\nf\ng\nh\ni\nj\nk', 'a\np\nc\nd\ne\nf\ng\nh\ni\nw\nk', 'Failed asserting that two str...n k'\n')
   Failed asserting that two strings are equal.

--- Expected
+++ Actual
@@ @@
'custom message\n
Failed asserting that two strings are equal.\n
+\n
@@ @@
+p\n\n
-\n
@@ @@\n
i\n\n
-j\n\n
+w\n\n
k'\n
'

/home/arturdev/projects/phpunit/src/Framework/Constraint/IsEqual.php:140
/home/arturdev/projects/phpunit/src/Framework/Assert.php:2116
/home/arturdev/projects/phpunit/src/Framework/Assert.php:541
/home/arturdev/projects/phpunit/tests/Framework/ConstraintTest.php:850
/home/arturdev/projects/phpunit/src/Framework/TestCase.php:1056
/home/arturdev/projects/phpunit/src/Framework/TestCase.php:915
/home/arturdev/projects/phpunit/src/Framework/TestResult.php:696
/home/arturdev/projects/phpunit/src/Framework/TestCase.php:870
/home/arturdev/projects/phpunit/src/Framework/TestSuite.php:746
/home/arturdev/projects/phpunit/src/Framework/TestSuite.php:746
/home/arturdev/projects/phpunit/src/Framework/TestSuite.php:746
/home/arturdev/projects/phpunit/src/Framework/TestSuite.php:746
/home/arturdev/projects/phpunit/src/TextUI/TestRunner.php:534
/home/arturdev/projects/phpunit/src/TextUI/Command.php:209
/home/arturdev/projects/phpunit/src/TextUI/Command.php:140

2. PHPUnit\Framework\ConstraintTest::testConstraintIsEqual2 with data set #12 (stdClass Object (...), stdClass Object (...), 'Failed asserting that two obj...\n )\n')
   Failed asserting that two strings are equal.

--- Expected
+++ Actual
@@ @@
'custom message\n
Failed asserting that two objects are equal.\n
+\n
+\n
@@ @@

•        0 => 4\n
  

-\n
@@ @@\n
'foo' => 'a\n\n

•    b\n\n
  

•    p\n\n
  

-\n
@@ @@\n
i\n\n

•    j\n\n
  

•    w\n\n
     k'\n
  

  )\n
  'self' => stdClass Object (...)\n
  'c' => stdClass Object (...)\n
  )\n
  '

/home/arturdev/projects/phpunit/src/Framework/Constraint/IsEqual.php:140
/home/arturdev/projects/phpunit/src/Framework/Assert.php:2116
/home/arturdev/projects/phpunit/src/Framework/Assert.php:541
/home/arturdev/projects/phpunit/tests/Framework/ConstraintTest.php:850
/home/arturdev/projects/phpunit/src/Framework/TestCase.php:1056
/home/arturdev/projects/phpunit/src/Framework/TestCase.php:915
/home/arturdev/projects/phpunit/src/Framework/TestResult.php:696
/home/arturdev/projects/phpunit/src/Framework/TestCase.php:870
/home/arturdev/projects/phpunit/src/Framework/TestSuite.php:746
/home/arturdev/projects/phpunit/src/Framework/TestSuite.php:746
/home/arturdev/projects/phpunit/src/Framework/TestSuite.php:746
/home/arturdev/projects/phpunit/src/Framework/TestSuite.php:746
/home/arturdev/projects/phpunit/src/TextUI/TestRunner.php:534
/home/arturdev/projects/phpunit/src/TextUI/Command.php:209
/home/arturdev/projects/phpunit/src/TextUI/Command.php:140

[...]

[SpacePossum]

Thanks for reporting.
This should be resolved with sebastianbergmann/phpunit#2687
Did you try updating both the packages?

[ArturGoldyn]

Thank you for suggestion, after merging master into feature branch all tests passed successfully.

[SpacePossum]

good to hear :)
thanks for reporting back!