From 9f25c6689ff01a79ff6a1bb5c0f57c96fef8a0a2 Mon Sep 17 00:00:00 2001
From: forge-bot <bot@forge.local>
Date: Sat, 18 Jul 2026 11:03:14 +0000
Subject: [PATCH] =?UTF-8?q?[=EA=B3=B5=ED=86=B5]=20util=20=E2=86=92=20frame?=
 =?UTF-8?q?work=20=EC=9C=A0=ED=8B=B8=20(ACM-CM-002)?=
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---
 .../framework/util/DateUtilTest.java          | 161 ++++++++++++++++++
 1 file changed, 161 insertions(+)
 create mode 100644 boot/common-framework/src/test/java/com/klaro/acquirecore/framework/util/DateUtilTest.java

diff --git a/boot/common-framework/src/test/java/com/klaro/acquirecore/framework/util/DateUtilTest.java b/boot/common-framework/src/test/java/com/klaro/acquirecore/framework/util/DateUtilTest.java
new file mode 100644
index 0000000..d40e7d2
--- /dev/null
+++ b/boot/common-framework/src/test/java/com/klaro/acquirecore/framework/util/DateUtilTest.java
@@ -0,0 +1,161 @@
+package com.klaro.acquirecore.framework.util;
+
+import org.junit.jupiter.api.Test;
+
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class DateUtilTest {
+
+    @Test
+    void parseDate_withValidDateString_returnsLocalDate() {
+        LocalDate result = DateUtil.parseDate("2024-01-15");
+        assertEquals(LocalDate.of(2024, 1, 15), result);
+    }
+
+    @Test
+    void parseDate_withNull_throwsException() {
+        assertThrows(NullPointerException.class, () -> DateUtil.parseDate(null));
+    }
+
+    @Test
+    void formatDate_withValidDate_returnsFormattedString() {
+        LocalDate date = LocalDate.of(2024, 1, 15);
+        String result = DateUtil.formatDate(date);
+        assertEquals("2024-01-15", result);
+    }
+
+    @Test
+    void formatDate_withNull_throwsException() {
+        assertThrows(NullPointerException.class, () -> DateUtil.formatDate(null));
+    }
+
+    @Test
+    void daysBetween_calculatesCorrectDays() {
+        LocalDate start = LocalDate.of(2024, 1, 1);
+        LocalDate end = LocalDate.of(2024, 1, 11);
+        long result = DateUtil.daysBetween(start, end);
+        assertEquals(10, result);
+    }
+
+    @Test
+    void addDays_addsCorrectDays() {
+        LocalDate date = LocalDate.of(2024, 1, 15);
+        LocalDate result = DateUtil.addDays(date, 5);
+        assertEquals(LocalDate.of(2024, 1, 20), result);
+    }
+
+    @Test
+    void addDays_withNegativeValue_subtractsDays() {
+        LocalDate date = LocalDate.of(2024, 1, 15);
+        LocalDate result = DateUtil.addDays(date, -5);
+        assertEquals(LocalDate.of(2024, 1, 10), result);
+    }
+
+    @Test
+    void isBetween_withDateInRange_returnsTrue() {
+        LocalDate date = LocalDate.of(2024, 6, 15);
+        LocalDate start = LocalDate.of(2024, 1, 1);
+        LocalDate end = LocalDate.of(2024, 12, 31);
+        assertTrue(DateUtil.isBetween(date, start, end));
+    }
+
+    @Test
+    void isBetween_withDateOutOfRange_returnsFalse() {
+        LocalDate date = LocalDate.of(2025, 1, 1);
+        LocalDate start = LocalDate.of(2024, 1, 1);
+        LocalDate end = LocalDate.of(2024, 12, 31);
+        assertFalse(DateUtil.isBetween(date, start, end));
+    }
+
+    @Test
+    void isValidDate_withValidDate_returnsTrue() {
+        assertTrue(DateUtil.isValidDate("2024-01-15"));
+    }
+
+    @Test
+    void isValidDate_withInvalidDate_returnsFalse() {
+        assertFalse(DateUtil.isValidDate("invalid-date"));
+    }
+
+    @Test
+    void isValidDate_withNull_returnsFalse() {
+        assertFalse(DateUtil.isValidDate(null));
+    }
+
+    @Test
+    void today_returnsCurrentDate() {
+        LocalDate result = DateUtil.today();
+        assertEquals(LocalDate.now(), result);
+    }
+
+    @Test
+    void now_returnsCurrentDateTime() {
+        LocalDateTime result = DateUtil.now();
+        assertNotNull(result);
+    }
+
+    @Test
+    void parseDateTime_withValidDateTimeString_returnsLocalDateTime() {
+        LocalDateTime result = DateUtil.parseDateTime("2024-01-15 10:30:45");
+        assertEquals(LocalDateTime.of(2024, 1, 15, 10, 30, 45), result);
+    }
+
+    @Test
+    void formatDateTime_withValidDateTime_returnsFormattedString() {
+        LocalDateTime dateTime = LocalDateTime.of(2024, 1, 15, 10, 30, 45);
+        String result = DateUtil.formatDateTime(dateTime);
+        assertEquals("2024-01-15 10:30:45", result);
+    }
+
+    @Test
+    void formatDateKorean_withValidDate_returnsKoreanFormat() {
+        LocalDate date = LocalDate.of(2024, 1, 15);
+        String result = DateUtil.formatDateKorean(date);
+        assertEquals("2024년 01월 15일", result);
+    }
+
+    @Test
+    void startOfDay_returnsStartOfDayDateTime() {
+        LocalDate date = LocalDate.of(2024, 1, 15);
+        LocalDateTime result = DateUtil.startOfDay(date);
+        assertEquals(LocalDateTime.of(2024, 1, 15, 0, 0, 0), result);
+    }
+
+    @Test
+    void endOfDay_returnsEndOfDayDateTime() {
+        LocalDate date = LocalDate.of(2024, 1, 15);
+        LocalDateTime result = DateUtil.endOfDay(date);
+        assertEquals(LocalDateTime.of(2024, 1, 15, 23, 59, 59, 999999999), result);
+    }
+
+    @Test
+    void addMonths_addsCorrectMonths() {
+        LocalDate date = LocalDate.of(2024, 1, 15);
+        LocalDate result = DateUtil.addMonths(date, 3);
+        assertEquals(LocalDate.of(2024, 4, 15), result);
+    }
+
+    @Test
+    void addYears_addsCorrectYears() {
+        LocalDate date = LocalDate.of(2024, 1, 15);
+        LocalDate result = DateUtil.addYears(date, 1);
+        assertEquals(LocalDate.of(2025, 1, 15), result);
+    }
+
+    @Test
+    void isBefore_withEarlierDate_returnsTrue() {
+        LocalDate date = LocalDate.of(2024, 1, 15);
+        LocalDate dateToCompare = LocalDate.of(2024, 1, 20);
+        assertTrue(DateUtil.isBefore(date, dateToCompare));
+    }
+
+    @Test
+    void isAfter_withLaterDate_returnsTrue() {
+        LocalDate date = LocalDate.of(2024, 1, 20);
+        LocalDate dateToCompare = LocalDate.of(2024, 1, 15);
+        assertTrue(DateUtil.isAfter(date, dateToCompare));
+    }
+}