From c6860a3d9219507b64b858f6bc1f5d58a409cc1f Mon Sep 17 00:00:00 2001
From: tomohiro-okuyama <58939083+tomohiro-okuyama@users.noreply.github.com>
Date: Thu, 27 Oct 2022 10:34:11 +0900
Subject: [PATCH 1/2] fix: fix unintended serialization when year is a negative
 number

---
 .../com/kintone/client/RecordSerializer.java  |  4 +--
 .../kintone/client/RecordSerializerTest.java  | 31 +++++++++++++++++++
 2 files changed, 33 insertions(+), 2 deletions(-)

diff --git a/src/main/java/com/kintone/client/RecordSerializer.java b/src/main/java/com/kintone/client/RecordSerializer.java
index e2dbbdf5..53e5ad52 100644
--- a/src/main/java/com/kintone/client/RecordSerializer.java
+++ b/src/main/java/com/kintone/client/RecordSerializer.java
@@ -27,10 +27,10 @@
 class RecordSerializer extends StdSerializer<Record> {
     private static final long serialVersionUID = 8267967360812294563L;
 
-    private static final DateTimeFormatter DATE_FORMATTER = DateTimeFormatter.ofPattern("yyyy-MM-dd");
+    private static final DateTimeFormatter DATE_FORMATTER = DateTimeFormatter.ofPattern("uuuu-MM-dd");
     private static final DateTimeFormatter TIME_FORMATTER = DateTimeFormatter.ofPattern("HH:mm");
     private static final DateTimeFormatter DATETIME_FORMATTER =
-            DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm'Z'");
+            DateTimeFormatter.ofPattern("uuuu-MM-dd'T'HH:mm'Z'");
 
     private static final Set<FieldType> IGNORE_FIELD_TYPES;
 
diff --git a/src/test/java/com/kintone/client/RecordSerializerTest.java b/src/test/java/com/kintone/client/RecordSerializerTest.java
index 14293238..b49f69b3 100644
--- a/src/test/java/com/kintone/client/RecordSerializerTest.java
+++ b/src/test/java/com/kintone/client/RecordSerializerTest.java
@@ -109,6 +109,14 @@ public void serialize_CREATED_TIME() throws IOException {
         assertThat(json).isEqualTo("{\"created_time\":{\"value\":\"2020-01-02T03:04Z\"}}");
     }
 
+    @Test
+    public void serialize_CREATED_TIME_negativeNumberYear() throws IOException {
+        ZonedDateTime time = ZonedDateTime.of(-2020, 1, 2, 3, 4, 5, 6, ZoneOffset.UTC);
+        Record record = new Record().putField("created_time", new CreatedTimeFieldValue(time));
+        String json = mapper.writeValueAsString(record);
+        assertThat(json).isEqualTo("{\"created_time\":{\"value\":\"-2020-01-02T03:04Z\"}}");
+    }
+
     @Test
     public void serialize_CREATED_TIME_empty() throws IOException {
         Record record = new Record().putField("created_time", new CreatedTimeFieldValue(null));
@@ -138,6 +146,13 @@ public void serialize_DATE() throws IOException {
         assertThat(json).isEqualTo("{\"date\":{\"value\":\"2020-01-02\"}}");
     }
 
+    @Test
+    public void serialize_DATE_negativeNumberYear() throws IOException {
+        Record record = new Record().putField("date", new DateFieldValue(LocalDate.of(-2020, 1, 2)));
+        String json = mapper.writeValueAsString(record);
+        assertThat(json).isEqualTo("{\"date\":{\"value\":\"-2020-01-02\"}}");
+    }
+
     @Test
     public void serialize_DATE_empty() throws IOException {
         Record record = new Record().putField("date", new DateFieldValue(null));
@@ -153,6 +168,14 @@ public void serialize_DATETIME() throws IOException {
         assertThat(json).isEqualTo("{\"datetime\":{\"value\":\"2020-01-02T03:04Z\"}}");
     }
 
+    @Test
+    public void serialize_DATETIME_negativeNumberYear() throws IOException {
+        ZonedDateTime value = ZonedDateTime.of(-2020, 1, 2, 3, 4, 5, 6, ZoneOffset.UTC);
+        Record record = new Record().putField("datetime", new DateTimeFieldValue(value));
+        String json = mapper.writeValueAsString(record);
+        assertThat(json).isEqualTo("{\"datetime\":{\"value\":\"-2020-01-02T03:04Z\"}}");
+    }
+
     @Test
     public void serialize_DATETIME_empty() throws IOException {
         Record record = new Record().putField("datetime", new DateTimeFieldValue(null));
@@ -416,6 +439,14 @@ public void serialize_UPDATED_TIME() throws IOException {
         assertThat(json).isEqualTo("{\"updated_time\":{\"value\":\"2020-01-02T03:04Z\"}}");
     }
 
+    @Test
+    public void serialize_UPDATED_TIME_negativeNumberYear() throws IOException {
+        ZonedDateTime time = ZonedDateTime.of(-2020, 1, 2, 3, 4, 5, 6, ZoneOffset.UTC);
+        Record record = new Record().putField("updated_time", new UpdatedTimeFieldValue(time));
+        String json = mapper.writeValueAsString(record);
+        assertThat(json).isEqualTo("{\"updated_time\":{\"value\":\"-2020-01-02T03:04Z\"}}");
+    }
+
     @Test
     public void serialize_UPDATED_TIME_empty() throws IOException {
         Record record = new Record().putField("updated_time", new UpdatedTimeFieldValue(null));

From 5bf0412dff5dd3bbbb407e6c72234a17be89665b Mon Sep 17 00:00:00 2001
From: tomohiro-okuyama <58939083+tomohiro-okuyama@users.noreply.github.com>
Date: Thu, 27 Oct 2022 10:35:05 +0900
Subject: [PATCH 2/2] chore: bump version to 1.4.1

---
 build.gradle | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/build.gradle b/build.gradle
index 66e2c57e..165ff591 100644
--- a/build.gradle
+++ b/build.gradle
@@ -6,7 +6,7 @@ plugins {
     id 'com.github.hierynomus.license' version '0.16.1'
 }
 
-version = '1.4.0'
+version = '1.4.1'
 sourceCompatibility = 1.8
 targetCompatibility = 1.8