Fix space_test by ensuring Runtime::Current() is not null

Change-Id: Ied38b8ff3ae85b78d6e11d4bbf498bb2e0bffa4e
diff --git a/src/space_test.cc b/src/space_test.cc
index 2e6932d..ce7140f 100644
--- a/src/space_test.cc
+++ b/src/space_test.cc
@@ -2,14 +2,15 @@
 
 #include "space.h"
 
-#include "gtest/gtest.h"
-
+#include "common_test.h"
 #include "globals.h"
 #include "UniquePtr.h"
 
 namespace art {
 
-TEST(SpaceTest, Init) {
+class SpaceTest : public CommonTest {};
+
+TEST_F(SpaceTest, Init) {
   {
     // Less than
     UniquePtr<Space> space(Space::Create(16 * MB, 32 * MB, NULL));
@@ -27,7 +28,7 @@
   }
 }
 
-TEST(SpaceTest, AllocAndFree) {
+TEST_F(SpaceTest, AllocAndFree) {
   UniquePtr<Space> space(Space::Create(4 * MB, 16 * MB, NULL));
   ASSERT_TRUE(space.get() != NULL);