From 89c0bc72b284c49ab48516c8bdb232d490f01442 Mon Sep 17 00:00:00 2001
From: Tatu Saloranta <tatu.saloranta@iki.fi>
Date: Mon, 3 May 2021 20:23:42 -0700
Subject: [PATCH] Add a test for #473

---
 .../xml/deser/EmptyWithScalarsTest.java       | 132 ++++++++++++++++++
 1 file changed, 132 insertions(+)
 create mode 100644 src/test/java/com/fasterxml/jackson/dataformat/xml/deser/EmptyWithScalarsTest.java

diff --git a/src/test/java/com/fasterxml/jackson/dataformat/xml/deser/EmptyWithScalarsTest.java b/src/test/java/com/fasterxml/jackson/dataformat/xml/deser/EmptyWithScalarsTest.java
new file mode 100644
index 000000000..1c745ecae
--- /dev/null
+++ b/src/test/java/com/fasterxml/jackson/dataformat/xml/deser/EmptyWithScalarsTest.java
@@ -0,0 +1,132 @@
+package com.fasterxml.jackson.dataformat.xml.deser;
+
+import java.math.BigDecimal;
+import java.math.BigInteger;
+
+import com.fasterxml.jackson.dataformat.xml.XmlMapper;
+import com.fasterxml.jackson.dataformat.xml.XmlTestBase;
+import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlRootElement;
+
+// [dataformat-xml#473]: 2.12 coercion of empty to "default"
+public class EmptyWithScalarsTest extends XmlTestBase
+{
+    @JacksonXmlRootElement(localName = "w")
+    static class NumbersPrimitive {
+        public int i = 1;
+        public long l = 2L;
+
+        public double d = 0.5;
+        public float f = 0.25f;
+    }
+
+    @JacksonXmlRootElement(localName = "w")
+    static class NumbersWrapper {
+        public Integer I = Integer.valueOf(1);
+        public Long L = Long.valueOf(1L);
+
+        public Double D = Double.valueOf(0.5);
+        public Float F = Float.valueOf(0.5f);
+    }
+
+    @JacksonXmlRootElement(localName = "w")
+    static class NumbersOther {
+        public BigInteger bi = BigInteger.ONE;
+        public BigDecimal bd = BigDecimal.ONE;
+    }
+
+    @JacksonXmlRootElement(localName = "w")
+    static class MiscOther {
+        public Boolean B = Boolean.TRUE;
+    }
+
+    private final XmlMapper MAPPER = newMapper();
+
+    /*
+    /**********************************************************************
+    /* Test methods, Numbers / primitive
+    /**********************************************************************
+     */
+
+    public void testPrimitiveIntsWithEmpty() throws Exception
+    {
+        NumbersPrimitive p = MAPPER.readValue(_emptyWrapped("i"),
+                NumbersPrimitive.class);
+        assertEquals(0, p.i);
+        p = MAPPER.readValue(_emptyWrapped("l"),
+                NumbersPrimitive.class);
+        assertEquals(0L, p.l);
+    }
+
+    public void testPrimitiveFPsWithEmpty() throws Exception
+    {
+        NumbersPrimitive p = MAPPER.readValue(_emptyWrapped("d"),
+                NumbersPrimitive.class);
+        assertEquals(0d, p.d);
+        p = MAPPER.readValue(_emptyWrapped("f"),
+                NumbersPrimitive.class);
+        assertEquals(0f, p.f);
+    }
+
+    /*
+    /**********************************************************************
+    /* Test methods, Numbers / wrapper (or Object)
+    /**********************************************************************
+     */
+
+    public void testIntegralsWithEmpty() throws Exception
+    {
+        NumbersWrapper w = MAPPER.readValue(_emptyWrapped("I"),
+                NumbersWrapper.class);
+        assertNull(w.I);
+        w = MAPPER.readValue(_emptyWrapped("L"),
+                NumbersWrapper.class);
+        assertNull(w.L);
+
+        NumbersOther o = MAPPER.readValue(_emptyWrapped("bi"),
+                NumbersOther.class);
+        assertNull(o.bi);
+    }
+
+    public void testFPWithEmpty() throws Exception
+    {
+        NumbersWrapper w = MAPPER.readValue(_emptyWrapped("D"),
+                NumbersWrapper.class);
+        assertNull(w.D);
+        w = MAPPER.readValue(_emptyWrapped("F"),
+                NumbersWrapper.class);
+        assertNull(w.F);
+
+        NumbersOther o = MAPPER.readValue(_emptyWrapped("bd"),
+                NumbersOther.class);
+        assertNull(o.bd);
+    }
+
+    /*
+    /**********************************************************************
+    /* Test methods, otber Scalars
+    /**********************************************************************
+     */
+
+    public void testOtherScalarWithEmpty() throws Exception
+    {
+        MiscOther o = MAPPER.readValue(_emptyWrapped("B"),
+                MiscOther.class);
+        assertNull(o.B);
+    }
+
+    /*
+    /**********************************************************************
+    /* Internal methods
+    /**********************************************************************
+     */
+
+    private String _emptyWrapped(String name) {
+        return _simpleWrapped(name, "");
+    }
+
+    private String _simpleWrapped(String name, String value) {
+        return "<w>\n"
+                +"<"+name+">"+value+"</"+name+">\n"
+                +"</w>\n";
+    }
+}