From 18eee34dd75eaafad6bc0f1922da0db8d4d09df0 Mon Sep 17 00:00:00 2001
From: Dmitry Spikhalskiy <dmitry@spikhalskiy.com>
Date: Wed, 9 Nov 2016 22:39:33 +0300
Subject: [PATCH] Add failing test for an issue #1421

---
 .../failing/SingleValueAsArray1421Test.java   | 57 +++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 src/test/java/com/fasterxml/jackson/failing/SingleValueAsArray1421Test.java

diff --git a/src/test/java/com/fasterxml/jackson/failing/SingleValueAsArray1421Test.java b/src/test/java/com/fasterxml/jackson/failing/SingleValueAsArray1421Test.java
new file mode 100644
index 0000000000..ee12ebb976
--- /dev/null
+++ b/src/test/java/com/fasterxml/jackson/failing/SingleValueAsArray1421Test.java
@@ -0,0 +1,57 @@
+package com.fasterxml.jackson.failing;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.databind.DeserializationFeature;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.junit.Test;
+
+import java.io.IOException;
+import java.util.Collections;
+import java.util.List;
+
+public class SingleValueAsArray1421Test
+{
+    private static final String JSON = "[{\"message\":\"messageHere\"}]";
+
+    static class A
+    {
+        List<B> bs = Collections.emptyList();
+
+        @JsonCreator
+        A(final List<B> bs)
+        {
+            this.bs = bs;
+        }
+    }
+
+    static class B
+    {
+        List<C> cs = Collections.emptyList();
+
+        @JsonCreator
+        B(final List<C> cs)
+        {
+            this.cs = cs;
+        }
+    }
+
+    public static class C
+    {
+        String message;
+
+        @JsonCreator
+        C(@JsonProperty("message") String message)
+        {
+            this.message = message;
+        }
+    }
+
+    @Test
+    public void testSuccessfulDeserializationOfObjectWithChainedArrayCreators() throws IOException
+    {
+        ObjectMapper om = new ObjectMapper();
+        om.configure(DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY, true);
+        om.readValue(JSON, A.class);
+    }
+}