diff --git a/tests/ResourceCacheTest.cpp b/tests/ResourceCacheTest.cpp
index d62d09d..f9f94d1 100644
--- a/tests/ResourceCacheTest.cpp
+++ b/tests/ResourceCacheTest.cpp
@@ -247,6 +247,37 @@
         REPORTER_ASSERT(reporter, 201 == cache.getCachedResourceBytes());
         REPORTER_ASSERT(reporter, 1 == cache.getCachedResourceCount());
     }
+
+    // Test changing the size of an exclusively-held resource.
+    {
+        GrResourceCache cache(2, 300);
+
+        TestResource* a = new TestResource(context->getGpu(), 100);
+        cache.addResource(key1, a);
+        cache.makeExclusive(a->getCacheEntry());
+
+        TestResource* b = new TestResource(context->getGpu(), 100);
+        cache.addResource(key2, b);
+        b->unref();
+
+        REPORTER_ASSERT(reporter, 200 == cache.getCachedResourceBytes());
+        REPORTER_ASSERT(reporter, 2 == cache.getCachedResourceCount());
+        REPORTER_ASSERT(reporter, NULL == cache.find(key1));
+
+        a->setSize(200);
+
+        REPORTER_ASSERT(reporter, 300 == cache.getCachedResourceBytes());
+        REPORTER_ASSERT(reporter, 2 == cache.getCachedResourceCount());
+        // Internal resource cache validation will test the detached size (debug mode only).
+
+        cache.makeNonExclusive(a->getCacheEntry());
+        a->unref();
+
+        REPORTER_ASSERT(reporter, 300 == cache.getCachedResourceBytes());
+        REPORTER_ASSERT(reporter, 2 == cache.getCachedResourceCount());
+        REPORTER_ASSERT(reporter, cache.find(key1));
+        // Internal resource cache validation will test the detached size (debug mode only).
+    }
 }
 
 ////////////////////////////////////////////////////////////////////////////////