diff --git a/runtime/dex_file_test.cc b/runtime/dex_file_test.cc
index 543a7b0..9b6859a 100644
--- a/runtime/dex_file_test.cc
+++ b/runtime/dex_file_test.cc
@@ -17,11 +17,11 @@
 #include "dex_file.h"
 
 #include "UniquePtr.h"
-#include "common_test.h"
+#include "common_runtime_test.h"
 
 namespace art {
 
-class DexFileTest : public CommonTest {};
+class DexFileTest : public CommonRuntimeTest {};
 
 TEST_F(DexFileTest, Open) {
   ScopedObjectAccess soa(Thread::Current());
@@ -29,6 +29,77 @@
   ASSERT_TRUE(dex != NULL);
 }
 
+static const byte kBase64Map[256] = {
+  255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+  255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+  255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+  255, 255, 255, 255, 255, 255, 255,  62, 255, 255, 255,  63,
+  52,  53,  54,  55,  56,  57,  58,  59,  60,  61, 255, 255,
+  255, 254, 255, 255, 255,   0,   1,   2,   3,   4,   5,   6,
+    7,   8,   9,  10,  11,  12,  13,  14,  15,  16,  17,  18,  // NOLINT
+   19,  20,  21,  22,  23,  24,  25, 255, 255, 255, 255, 255,  // NOLINT
+  255,  26,  27,  28,  29,  30,  31,  32,  33,  34,  35,  36,
+   37,  38,  39,  40,  41,  42,  43,  44,  45,  46,  47,  48,  // NOLINT
+   49,  50,  51, 255, 255, 255, 255, 255, 255, 255, 255, 255,  // NOLINT
+  255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+  255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+  255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+  255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+  255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+  255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+  255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+  255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+  255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+  255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+  255, 255, 255, 255
+};
+
+static inline byte* DecodeBase64(const char* src, size_t* dst_size) {
+  std::vector<byte> tmp;
+  uint32_t t = 0, y = 0;
+  int g = 3;
+  for (size_t i = 0; src[i] != '\0'; ++i) {
+    byte c = kBase64Map[src[i] & 0xFF];
+    if (c == 255) continue;
+    // the final = symbols are read and used to trim the remaining bytes
+    if (c == 254) {
+      c = 0;
+      // prevent g < 0 which would potentially allow an overflow later
+      if (--g < 0) {
+        *dst_size = 0;
+        return nullptr;
+      }
+    } else if (g != 3) {
+      // we only allow = to be at the end
+      *dst_size = 0;
+      return nullptr;
+    }
+    t = (t << 6) | c;
+    if (++y == 4) {
+      tmp.push_back((t >> 16) & 255);
+      if (g > 1) {
+        tmp.push_back((t >> 8) & 255);
+      }
+      if (g > 2) {
+        tmp.push_back(t & 255);
+      }
+      y = t = 0;
+    }
+  }
+  if (y != 0) {
+    *dst_size = 0;
+    return nullptr;
+  }
+  UniquePtr<byte[]> dst(new byte[tmp.size()]);
+  if (dst_size != nullptr) {
+    *dst_size = tmp.size();
+  } else {
+    *dst_size = 0;
+  }
+  std::copy(tmp.begin(), tmp.end(), dst.get());
+  return dst.release();
+}
+
 // Although this is the same content logically as the Nested test dex,
 // the DexFileHeader test is sensitive to subtle changes in the
 // contents due to the checksum etc, so we embed the exact input here.