ionutzpi commented on code in PR #1473:
URL: https://github.com/apache/jackrabbit-oak/pull/1473#discussion_r1618651613


##########
oak-store-document/src/test/java/org/apache/jackrabbit/oak/plugins/document/DocumentPropertyStateTest.java:
##########
@@ -75,10 +82,97 @@ public void multiValuedBinarySize() throws Exception {
         assertEquals(Type.BINARIES, p.getType());
         assertEquals(3, p.count());
 
+        assertNull(((DocumentPropertyState) p).getCompressedValue());
+
+        reads.clear();
+        assertEquals(BLOB_SIZE, p.size(0));
+        // must not read the blob via stream
+        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());
+
+        assertNotNull(((DocumentPropertyState) p).getCompressedValue());
+
         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());
+
+        assertNull(((DocumentPropertyState) p).getCompressedValue());
+
+        reads.clear();
+        assertEquals(5, p.size(0));
+        // must not read the string via stream
+        assertEquals(0, reads.size());
+    }
+
+    @Test
+    public void stringAboveThresholdSize() throws Exception {
+        NodeBuilder builder = ns.getRoot().builder();
+        builder.child(TEST_NODE).setProperty("p", STRING_HUGEVALUE, 
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());
+
+        assertNotNull(((DocumentPropertyState) p).getCompressedValue());
+
+        reads.clear();
+        assertEquals(1050, p.size(0));
+        // must not read the string via streams
+        assertEquals(0, reads.size());
+    }
+
+    @Test
+    public void compressValueThrowsException() throws CommitFailedException, 
IOException {
+        DocumentNodeStore mockDocumentStore = mock(DocumentNodeStore.class);
+        Compression mockCompression = mock(Compression.class);
+        
when(mockCompression.getOutputStream(any(OutputStream.class))).thenThrow(new 
IOException("Compression failed"));
+
+        DocumentPropertyState documentPropertyState = new 
DocumentPropertyState(mockDocumentStore, "p", STRING_HUGEVALUE, 
mockCompression);
+
+        verify(mockCompression, 
times(1)).getOutputStream(any(OutputStream.class));
+
+    }
+
+    @Test
+    public void uncompressValueThrowsException() throws CommitFailedException, 
IOException {
+
+        DocumentNodeStore mockDocumentStore = mock(DocumentNodeStore.class);
+        Compression mockCompression = mock(Compression.class);
+        OutputStream mockOutputStream= mock(OutputStream.class);
+        
when(mockCompression.getOutputStream(any(OutputStream.class))).thenReturn(mockOutputStream);
+        
when(mockCompression.getInputStream(any(InputStream.class))).thenThrow(new 
IOException("Compression failed"));
+
+        DocumentPropertyState documentPropertyState = new 
DocumentPropertyState(mockDocumentStore, "p", STRING_HUGEVALUE, 
mockCompression);
+        documentPropertyState.getValue(Type.STRING);

Review Comment:
   Done.



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