select all tests under the tests/ dir

Author: marcoieni

src/bootstrap/mk/Makefile.in

@@ -110,13 +110,7 @@ ci-msvc: ci-msvc-py ci-msvc-ps1
 
 # Set of tests that should represent half of the time of the test suite.
 # Used to split tests across multiple CI runners.
-TESTS_IN_MINGW_X := \
-	tests/ui \
-	tests/rustdoc \
-	tests/run-make \
-	tests/rustdoc-ui \
-	tests/ui-fulldeps \
-	tests/rustdoc-json
+TESTS_IN_MINGW_X := tests/*
 
 # test both x and bootstrap entrypoints
 ci-mingw-x: