$ vendor/bin/phpunit -v "core_scss_testcase" lib/tests/scss_test.php
Moodle 3.9dev (Build: 20200103), c55402486bfefe81a1c102f36158de17e1dacd12
Php: 7.2.26, pgsql: 9.6.16, OS: Darwin 19.2.0 x86_64
PHPUnit 7.5.18 by Sebastian Bergmann and contributors.

Runtime:       PHP 7.2.26
Configuration: /Users/stronk7/git_moodle/testing/phpunit.xml

.......F                                                            8 / 8 (100%)

Time: 1.32 seconds, Memory: 56.25 MB

There was 1 failure:

1) core_scss_testcase::test_scss_compilation_with_sassc with data set "nested" ('nav {\n                      ...     }', 'nav ul {\n  margin: 0;\n  pad...e; }\n')
Failed asserting that two strings are identical.
--- Expected
+++ Actual
@@ @@
   margin: 0;
   padding: 0;
   list-style: none; }
+
 nav li {
   display: inline-block; }
+
 nav a {
   display: block;
   padding: 6px 12px;
   text-decoration: none; }
 '

/Users/stronk7/git_moodle/testing/lib/tests/scss_test.php:152
/Users/stronk7/git_moodle/testing/lib/phpunit/classes/advanced_testcase.php:80

To re-run:
 vendor/bin/phpunit -v "core_scss_testcase" lib/tests/scss_test.php

FAILURES!
Tests: 8, Assertions: 8, Failures: 1.