test: Add Two Creators Test with DELEGATING and PROPERTIES creators (#4605)

Author: Gems

src/test/java/com/fasterxml/jackson/failing/TwoCreators4602Test.java

@@ -0,0 +1,98 @@
+package com.fasterxml.jackson.failing;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.testutil.DatabindTestUtil;
+
+import org.junit.jupiter.api.Test;
+
+import java.util.List;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+// for [databind#4602]
+public class TwoCreators4602Test
+    extends DatabindTestUtil
+{
+    static class OuterBean4602 {
+        private final Bean4602 bean;
+
+        @JsonCreator
+        public OuterBean4602(@JsonProperty("bean") Bean4602 bean) {
+            this.bean = bean;
+        }
+
+        public Bean4602 getBean() {
+            return bean;
+        }
+    }
+
+    static class Bean4602 {
+        private final List<String> list;
+
+        private final InnerBean4602 inner;
+
+        @JsonCreator(mode = JsonCreator.Mode.PROPERTIES)
+        public Bean4602(@JsonProperty("list") List<String> list, @JsonProperty("inner") InnerBean4602 inner) {
+            this.list = list;
+            this.inner = inner;
+        }
+
+        @JsonCreator(mode = JsonCreator.Mode.DELEGATING)
+        private static Bean4602 of(final List<String> list) {
+            return new Bean4602(list, new InnerBean4602("default"));
+        }
+
+        public List<String> getList() {
+            return list;
+        }
+
+        public InnerBean4602 getInner() {
+            return inner;
+        }
+    }
+
+    static class InnerBean4602 {
+        private final String name;
+
+        @JsonCreator
+        public InnerBean4602(@JsonProperty("name") String name) {
+            this.name = name;
+        }
+
+        public String getName() {
+            return name;
+        }
+    }
+
+    private final ObjectMapper MAPPER = newJsonMapper();
+
+    @Test
+    public void testThatPropertiesCreatorIsUsed() throws Exception
+    {
+        final String json = "{ \"bean\":{ \"list\":[ \"a\", \"b\", \"c\"], \"inner\":{ \"name\": \"inner\" }}}";
+
+        OuterBean4602 result = MAPPER.readValue(json, OuterBean4602.class);
+
+        assertThat(result).isNotNull();
+        assertThat(result.getBean()).isNotNull();
+        assertThat(result.getBean().getInner()).isNotNull();
+        assertThat(result.getBean().getInner().getName()).isEqualTo("inner");
+        assertThat(result.getBean().getList()).containsExactly("a", "b", "c");
+    }
+
+    @Test
+    public void testThatDelegatingCreatorIsUsed() throws Exception
+    {
+        OuterBean4602 result = MAPPER.readValue("{ \"bean\": [ \"a\", \"b\", \"c\"] }",
+                OuterBean4602.class);
+
+        assertThat(result).isNotNull();
+        assertThat(result.getBean()).isNotNull();
+        assertThat(result.getBean().getInner()).isNotNull();
+        assertThat(result.getBean().getInner().getName()).isEqualTo("default");
+        assertThat(result.getBean().getList()).containsExactly("a", "b", "c");
+    }
+}