PHPUnit - Allow env-var to specify version (for mixer tests)

diff --git a/tools/mixin/bin/mixer b/tools/mixin/bin/mixer
index 627fdaa9b64d51a30296d9be41cd255e21084bef..7d688c7da8423717b0cea2c67ec45083b58ae20b 100755 (executable)
--- a/tools/mixin/bin/mixer
+++ b/tools/mixin/bin/mixer
@@ -196,7 +196,8 @@ function deep_copy(array $srcDirs, string $targetDir): void {
 
 function phpunit(array $args = []) {
   $argString = implode(' ' , array_map('escapeshellarg', $args));
-  passthru_ok('phpunit8 ' . $argString);
+  $phpunit = getenv('PHPUNIT') ?: 'phpunit8';
+  passthru_ok($phpunit . ' ' . $argString);
 }
 
 function passthru_ok($cmd) {