stefan-egli commented on code in PR #1473:
URL: https://github.com/apache/jackrabbit-oak/pull/1473#discussion_r1616856073


##########
oak-store-document/src/test/java/org/apache/jackrabbit/oak/plugins/document/DocumentPropertyStateTest.java:
##########
@@ -81,4 +88,83 @@ public void multiValuedBinarySize() throws Exception {
         assertEquals(0, reads.size());
     }
 
+    @Test
+    public void multiValuedAboveThresholdSize() throws Exception {
+        NodeBuilder builder = ns.getRoot().builder();
+        List<Blob> blobs = newArrayList();
+        for (int i = 0; i < 13; i++) {
+            blobs.add(builder.createBlob(new RandomStream(BLOB_SIZE, i)));
+        }
+        builder.child(TEST_NODE).setProperty("p", blobs, Type.BINARIES);
+        TestUtils.merge(ns, builder);
+
+        PropertyState p = 
ns.getRoot().getChildNode(TEST_NODE).getProperty("p");
+        assertEquals(Type.BINARIES, Objects.requireNonNull(p).getType());
+        assertEquals(13, p.count());
+
+        reads.clear();
+        assertEquals(BLOB_SIZE, p.size(0));
+        // must not read the blob via stream
+        assertEquals(0, reads.size());
+    }
+
+    @Test
+    public void stringBelowThresholdSize() throws Exception {
+        NodeBuilder builder = ns.getRoot().builder();
+        builder.child(TEST_NODE).setProperty("p", "dummy", Type.STRING);
+        TestUtils.merge(ns, builder);
+
+        PropertyState p = 
ns.getRoot().getChildNode(TEST_NODE).getProperty("p");
+        assertEquals(Type.STRING, Objects.requireNonNull(p).getType());
+        assertEquals(1, p.count());
+
+        reads.clear();
+        assertEquals(5, p.size(0));
+        // must not read the string via stream
+        assertEquals(0, reads.size());
+    }

Review Comment:
   +1 to assert that compression actually happened (which is indirectly already 
done by asserting null/non-null for compressedValue, but it could in addition 
check that it did some compression indeed and not leave the value unchanged - 
which btw could also be a nice test case, to pass a compression type that 
doesn't actually compress - it should then still also work)



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