Add GC coverage test for moving GC

Adds testing coverage for collector transitions and homogeneous space
compaction.

Bug: 10808403

Change-Id: Ia79fecb47c33fc95d940243d6cb1068e9ee9dc9a
diff --git a/test/1337-gc-coverage/info.txt b/test/1337-gc-coverage/info.txt
new file mode 100644
index 0000000..7e3acd3
--- /dev/null
+++ b/test/1337-gc-coverage/info.txt
@@ -0,0 +1 @@
+Tests internal GC functions which are not exposed through normal APIs.
\ No newline at end of file