vts_fs_test: Require EROFS sysfs nodes. am: 5b227f3451

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/core/+/18636032

Change-Id: Ic976d0f6954342ab3eac142e6984918376769d8a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/fs_mgr/tests/vts_fs_test.cpp b/fs_mgr/tests/vts_fs_test.cpp
index 8c49e4a..aac2cfd 100644
--- a/fs_mgr/tests/vts_fs_test.cpp
+++ b/fs_mgr/tests/vts_fs_test.cpp
@@ -47,6 +47,8 @@
     std::string fs;
     ASSERT_TRUE(android::base::ReadFileToString("/proc/filesystems", &fs));
     EXPECT_THAT(fs, ::testing::HasSubstr("\terofs\n"));
+
+    ASSERT_EQ(access("/sys/fs/erofs", F_OK), 0);
 }
 
 TEST(fs, PartitionTypes) {