diff --git a/.gradle/7.4/checksums/checksums.lock b/.gradle/7.4/checksums/checksums.lock
new file mode 100644
index 0000000..bd1d7f0
Binary files /dev/null and b/.gradle/7.4/checksums/checksums.lock differ
diff --git a/.gradle/7.4/dependencies-accessors/dependencies-accessors.lock b/.gradle/7.4/dependencies-accessors/dependencies-accessors.lock
new file mode 100644
index 0000000..3105f5a
Binary files /dev/null and b/.gradle/7.4/dependencies-accessors/dependencies-accessors.lock differ
diff --git a/.gradle/7.4/dependencies-accessors/gc.properties b/.gradle/7.4/dependencies-accessors/gc.properties
new file mode 100644
index 0000000..e69de29
diff --git a/.gradle/7.4/executionHistory/executionHistory.bin b/.gradle/7.4/executionHistory/executionHistory.bin
new file mode 100644
index 0000000..d9f5a86
Binary files /dev/null and b/.gradle/7.4/executionHistory/executionHistory.bin differ
diff --git a/.gradle/7.4/executionHistory/executionHistory.lock b/.gradle/7.4/executionHistory/executionHistory.lock
new file mode 100644
index 0000000..27e9ed6
Binary files /dev/null and b/.gradle/7.4/executionHistory/executionHistory.lock differ
diff --git a/.gradle/7.4/fileChanges/last-build.bin b/.gradle/7.4/fileChanges/last-build.bin
new file mode 100644
index 0000000..f76dd23
Binary files /dev/null and b/.gradle/7.4/fileChanges/last-build.bin differ
diff --git a/.gradle/7.4/fileHashes/fileHashes.bin b/.gradle/7.4/fileHashes/fileHashes.bin
new file mode 100644
index 0000000..a5ae058
Binary files /dev/null and b/.gradle/7.4/fileHashes/fileHashes.bin differ
diff --git a/.gradle/7.4/fileHashes/fileHashes.lock b/.gradle/7.4/fileHashes/fileHashes.lock
new file mode 100644
index 0000000..d43e2e5
Binary files /dev/null and b/.gradle/7.4/fileHashes/fileHashes.lock differ
diff --git a/.gradle/7.4/fileHashes/resourceHashesCache.bin b/.gradle/7.4/fileHashes/resourceHashesCache.bin
new file mode 100644
index 0000000..11c627d
Binary files /dev/null and b/.gradle/7.4/fileHashes/resourceHashesCache.bin differ
diff --git a/.gradle/7.4/gc.properties b/.gradle/7.4/gc.properties
new file mode 100644
index 0000000..e69de29
diff --git a/.gradle/buildOutputCleanup/buildOutputCleanup.lock b/.gradle/buildOutputCleanup/buildOutputCleanup.lock
new file mode 100644
index 0000000..ceb2226
Binary files /dev/null and b/.gradle/buildOutputCleanup/buildOutputCleanup.lock differ
diff --git a/.gradle/buildOutputCleanup/cache.properties b/.gradle/buildOutputCleanup/cache.properties
new file mode 100644
index 0000000..c571263
--- /dev/null
+++ b/.gradle/buildOutputCleanup/cache.properties
@@ -0,0 +1,2 @@
+#Tue Jan 07 22:15:46 KST 2025
+gradle.version=7.4
diff --git a/.gradle/buildOutputCleanup/outputFiles.bin b/.gradle/buildOutputCleanup/outputFiles.bin
new file mode 100644
index 0000000..5ef14f3
Binary files /dev/null and b/.gradle/buildOutputCleanup/outputFiles.bin differ
diff --git a/.gradle/file-system.probe b/.gradle/file-system.probe
new file mode 100644
index 0000000..b2eaec9
Binary files /dev/null and b/.gradle/file-system.probe differ
diff --git a/.gradle/vcs-1/gc.properties b/.gradle/vcs-1/gc.properties
new file mode 100644
index 0000000..e69de29
diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000..26d3352
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/.idea/compiler.xml b/.idea/compiler.xml
new file mode 100644
index 0000000..03da417
--- /dev/null
+++ b/.idea/compiler.xml
@@ -0,0 +1,16 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/gradle.xml b/.idea/gradle.xml
new file mode 100644
index 0000000..611e7c8
--- /dev/null
+++ b/.idea/gradle.xml
@@ -0,0 +1,17 @@
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/jarRepositories.xml b/.idea/jarRepositories.xml
new file mode 100644
index 0000000..fdc392f
--- /dev/null
+++ b/.idea/jarRepositories.xml
@@ -0,0 +1,20 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 0000000..87a20fc
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,7 @@
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..830a534
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+
+
+
+
+
+
\ No newline at end of file
diff --git a/build.gradle b/build.gradle
new file mode 100644
index 0000000..2189a63
--- /dev/null
+++ b/build.gradle
@@ -0,0 +1,36 @@
+plugins {
+ id 'java'
+}
+
+group 'org.example'
+version '1.0-SNAPSHOT'
+
+repositories {
+ mavenCentral()
+}
+
+dependencies {
+ compileOnly 'org.projectlombok:lombok:1.18.28'
+ annotationProcessor 'org.projectlombok:lombok:1.18.28'
+ testCompileOnly 'org.projectlombok:lombok:1.18.28'
+ testAnnotationProcessor 'org.projectlombok:lombok:1.18.28'
+
+ // JUnit API
+ testImplementation 'org.junit.jupiter:junit-jupiter-api:5.10.0'
+ // JUnit 실행 엔진
+ testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.10.0'
+
+ // Optional: JUnit BOM으로 버전 관리
+ testImplementation platform('org.junit:junit-bom:5.10.0')
+
+ // Log4j Core와 API 의존성 추가
+ implementation 'org.apache.logging.log4j:log4j-api:2.20.0'
+ implementation 'org.apache.logging.log4j:log4j-core:2.20.0'
+
+ // (Optional) 로그를 파일이 아닌 콘솔에 출력할 경우
+ implementation 'org.apache.logging.log4j:log4j-jul:2.20.0'
+}
+
+test {
+ useJUnitPlatform()
+}
\ No newline at end of file
diff --git a/build/classes/java/main/Order.class b/build/classes/java/main/Order.class
new file mode 100644
index 0000000..43ab8b8
Binary files /dev/null and b/build/classes/java/main/Order.class differ
diff --git a/build/classes/java/main/ProductSychronized.class b/build/classes/java/main/ProductSychronized.class
new file mode 100644
index 0000000..9566feb
Binary files /dev/null and b/build/classes/java/main/ProductSychronized.class differ
diff --git a/build/classes/java/main/PurchaseServiceSychronized.class b/build/classes/java/main/PurchaseServiceSychronized.class
new file mode 100644
index 0000000..0b1326b
Binary files /dev/null and b/build/classes/java/main/PurchaseServiceSychronized.class differ
diff --git a/build/classes/java/test/Product0rderTest.class b/build/classes/java/test/Product0rderTest.class
new file mode 100644
index 0000000..1bdf866
Binary files /dev/null and b/build/classes/java/test/Product0rderTest.class differ
diff --git a/build/classes/java/test/ProductSynchronizedTest.class b/build/classes/java/test/ProductSynchronizedTest.class
new file mode 100644
index 0000000..89a5fd3
Binary files /dev/null and b/build/classes/java/test/ProductSynchronizedTest.class differ
diff --git a/build/classes/java/test/PurchaseServiceSynchronizedTest.class b/build/classes/java/test/PurchaseServiceSynchronizedTest.class
new file mode 100644
index 0000000..f72dcff
Binary files /dev/null and b/build/classes/java/test/PurchaseServiceSynchronizedTest.class differ
diff --git a/build/reports/tests/test/classes/Product0rderTest.html b/build/reports/tests/test/classes/Product0rderTest.html
new file mode 100644
index 0000000..562c493
--- /dev/null
+++ b/build/reports/tests/test/classes/Product0rderTest.html
@@ -0,0 +1,131 @@
+
+
+
+
+
+Test results - Class Product0rderTest
+
+
+
+
+
+
+
Class Product0rderTest
+
+
+
+
+
+
+
+
+|
+
+ |
+
+
+ |
+
+
+ |
+
+
+ |
+
+
+
+ |
+
+
+ |
+
+
+
+
+
+
+
Tests
+
+
+
+| Test |
+Method name |
+Duration |
+Result |
+
+
+
+| 재고테스트 |
+Product0rderTest() |
+0.048s |
+passed |
+
+
+
+
+
Standard output
+
+{35={apple=8}}
+{38={apple=8}}
+{30={apple=8}}
+{31={apple=8}}
+{29={apple=8}}
+{33={apple=8}}
+{27={apple=8}}
+{37={apple=8}}
+{34={apple=8}}
+{36={apple=8}}
+{28={apple=8}}
+{32={apple=8}}
+2025-01-07 22:19:54 [pool-2-thread-9] INFO PurchaseServiceSynchronizedTest - Thread 35 주문 정보 : 1건 [8] : 남은 수량 4
+2025-01-07 22:19:54 [pool-2-thread-6] INFO PurchaseServiceSynchronizedTest - Thread 32 주문 정보 : 1건 [8] : 남은 수량 4
+2025-01-07 22:19:54 [pool-2-thread-10] INFO PurchaseServiceSynchronizedTest - Thread 36 주문 정보 : 1건 [8] : 남은 수량 4
+2025-01-07 22:19:54 [pool-2-thread-12] INFO PurchaseServiceSynchronizedTest - Thread 38 주문 정보 : 1건 [8] : 남은 수량 4
+2025-01-07 22:19:54 [pool-2-thread-11] INFO PurchaseServiceSynchronizedTest - Thread 37 주문 정보 : 1건 [8] : 남은 수량 4
+2025-01-07 22:19:54 [pool-2-thread-3] INFO PurchaseServiceSynchronizedTest - Thread 29 주문 정보 : 1건 [8] : 남은 수량 4
+2025-01-07 22:19:54 [pool-2-thread-5] INFO PurchaseServiceSynchronizedTest - Thread 31 주문 정보 : 1건 [8] : 남은 수량 4
+2025-01-07 22:19:54 [pool-2-thread-1] INFO PurchaseServiceSynchronizedTest - Thread 27 주문 정보 : 1건 [8] : 남은 수량 4
+2025-01-07 22:19:54 [pool-2-thread-4] INFO PurchaseServiceSynchronizedTest - Thread 30 주문 정보 : 1건 [8] : 남은 수량 4
+2025-01-07 22:19:54 [pool-2-thread-2] INFO PurchaseServiceSynchronizedTest - Thread 28 주문 정보 : 1건 [8] : 남은 수량 4
+2025-01-07 22:19:54 [pool-2-thread-7] INFO PurchaseServiceSynchronizedTest - Thread 33 주문 정보 : 1건 [8] : 남은 수량 4
+2025-01-07 22:19:54 [pool-2-thread-8] INFO PurchaseServiceSynchronizedTest - Thread 34 주문 정보 : 1건 [8] : 남은 수량 4
+
+
+
+
+
+
+
+
diff --git a/build/reports/tests/test/css/base-style.css b/build/reports/tests/test/css/base-style.css
new file mode 100644
index 0000000..4afa73e
--- /dev/null
+++ b/build/reports/tests/test/css/base-style.css
@@ -0,0 +1,179 @@
+
+body {
+ margin: 0;
+ padding: 0;
+ font-family: sans-serif;
+ font-size: 12pt;
+}
+
+body, a, a:visited {
+ color: #303030;
+}
+
+#content {
+ padding-left: 50px;
+ padding-right: 50px;
+ padding-top: 30px;
+ padding-bottom: 30px;
+}
+
+#content h1 {
+ font-size: 160%;
+ margin-bottom: 10px;
+}
+
+#footer {
+ margin-top: 100px;
+ font-size: 80%;
+ white-space: nowrap;
+}
+
+#footer, #footer a {
+ color: #a0a0a0;
+}
+
+#line-wrapping-toggle {
+ vertical-align: middle;
+}
+
+#label-for-line-wrapping-toggle {
+ vertical-align: middle;
+}
+
+ul {
+ margin-left: 0;
+}
+
+h1, h2, h3 {
+ white-space: nowrap;
+}
+
+h2 {
+ font-size: 120%;
+}
+
+ul.tabLinks {
+ padding-left: 0;
+ padding-top: 10px;
+ padding-bottom: 10px;
+ overflow: auto;
+ min-width: 800px;
+ width: auto !important;
+ width: 800px;
+}
+
+ul.tabLinks li {
+ float: left;
+ height: 100%;
+ list-style: none;
+ padding-left: 10px;
+ padding-right: 10px;
+ padding-top: 5px;
+ padding-bottom: 5px;
+ margin-bottom: 0;
+ -moz-border-radius: 7px;
+ border-radius: 7px;
+ margin-right: 25px;
+ border: solid 1px #d4d4d4;
+ background-color: #f0f0f0;
+}
+
+ul.tabLinks li:hover {
+ background-color: #fafafa;
+}
+
+ul.tabLinks li.selected {
+ background-color: #c5f0f5;
+ border-color: #c5f0f5;
+}
+
+ul.tabLinks a {
+ font-size: 120%;
+ display: block;
+ outline: none;
+ text-decoration: none;
+ margin: 0;
+ padding: 0;
+}
+
+ul.tabLinks li h2 {
+ margin: 0;
+ padding: 0;
+}
+
+div.tab {
+}
+
+div.selected {
+ display: block;
+}
+
+div.deselected {
+ display: none;
+}
+
+div.tab table {
+ min-width: 350px;
+ width: auto !important;
+ width: 350px;
+ border-collapse: collapse;
+}
+
+div.tab th, div.tab table {
+ border-bottom: solid #d0d0d0 1px;
+}
+
+div.tab th {
+ text-align: left;
+ white-space: nowrap;
+ padding-left: 6em;
+}
+
+div.tab th:first-child {
+ padding-left: 0;
+}
+
+div.tab td {
+ white-space: nowrap;
+ padding-left: 6em;
+ padding-top: 5px;
+ padding-bottom: 5px;
+}
+
+div.tab td:first-child {
+ padding-left: 0;
+}
+
+div.tab td.numeric, div.tab th.numeric {
+ text-align: right;
+}
+
+span.code {
+ display: inline-block;
+ margin-top: 0em;
+ margin-bottom: 1em;
+}
+
+span.code pre {
+ font-size: 11pt;
+ padding-top: 10px;
+ padding-bottom: 10px;
+ padding-left: 10px;
+ padding-right: 10px;
+ margin: 0;
+ background-color: #f7f7f7;
+ border: solid 1px #d0d0d0;
+ min-width: 700px;
+ width: auto !important;
+ width: 700px;
+}
+
+span.wrapped pre {
+ word-wrap: break-word;
+ white-space: pre-wrap;
+ word-break: break-all;
+}
+
+label.hidden {
+ display: none;
+}
\ No newline at end of file
diff --git a/build/reports/tests/test/css/style.css b/build/reports/tests/test/css/style.css
new file mode 100644
index 0000000..3dc4913
--- /dev/null
+++ b/build/reports/tests/test/css/style.css
@@ -0,0 +1,84 @@
+
+#summary {
+ margin-top: 30px;
+ margin-bottom: 40px;
+}
+
+#summary table {
+ border-collapse: collapse;
+}
+
+#summary td {
+ vertical-align: top;
+}
+
+.breadcrumbs, .breadcrumbs a {
+ color: #606060;
+}
+
+.infoBox {
+ width: 110px;
+ padding-top: 15px;
+ padding-bottom: 15px;
+ text-align: center;
+}
+
+.infoBox p {
+ margin: 0;
+}
+
+.counter, .percent {
+ font-size: 120%;
+ font-weight: bold;
+ margin-bottom: 8px;
+}
+
+#duration {
+ width: 125px;
+}
+
+#successRate, .summaryGroup {
+ border: solid 2px #d0d0d0;
+ -moz-border-radius: 10px;
+ border-radius: 10px;
+}
+
+#successRate {
+ width: 140px;
+ margin-left: 35px;
+}
+
+#successRate .percent {
+ font-size: 180%;
+}
+
+.success, .success a {
+ color: #008000;
+}
+
+div.success, #successRate.success {
+ background-color: #bbd9bb;
+ border-color: #008000;
+}
+
+.failures, .failures a {
+ color: #b60808;
+}
+
+.skipped, .skipped a {
+ color: #c09853;
+}
+
+div.failures, #successRate.failures {
+ background-color: #ecdada;
+ border-color: #b60808;
+}
+
+ul.linkList {
+ padding-left: 0;
+}
+
+ul.linkList li {
+ list-style: none;
+ margin-bottom: 5px;
+}
diff --git a/build/reports/tests/test/index.html b/build/reports/tests/test/index.html
new file mode 100644
index 0000000..c8281c3
--- /dev/null
+++ b/build/reports/tests/test/index.html
@@ -0,0 +1,133 @@
+
+
+
+
+
+Test results - Test Summary
+
+
+
+
+
+
+
Test Summary
+
+
+
+
+
+
+
+|
+
+ |
+
+
+ |
+
+
+ |
+
+
+ |
+
+
+
+ |
+
+
+ |
+
+
+
+
+
+
+
Packages
+
+
+
+| Package |
+Tests |
+Failures |
+Ignored |
+Duration |
+Success rate |
+
+
+
+
+|
+default-package
+ |
+1 |
+0 |
+0 |
+0.048s |
+100% |
+
+
+
+
+
+
Classes
+
+
+
+| Class |
+Tests |
+Failures |
+Ignored |
+Duration |
+Success rate |
+
+
+
+
+|
+Product0rderTest
+ |
+1 |
+0 |
+0 |
+0.048s |
+100% |
+
+
+
+
+
+
+
+
+
diff --git a/build/reports/tests/test/js/report.js b/build/reports/tests/test/js/report.js
new file mode 100644
index 0000000..83bab4a
--- /dev/null
+++ b/build/reports/tests/test/js/report.js
@@ -0,0 +1,194 @@
+(function (window, document) {
+ "use strict";
+
+ var tabs = {};
+
+ function changeElementClass(element, classValue) {
+ if (element.getAttribute("className")) {
+ element.setAttribute("className", classValue);
+ } else {
+ element.setAttribute("class", classValue);
+ }
+ }
+
+ function getClassAttribute(element) {
+ if (element.getAttribute("className")) {
+ return element.getAttribute("className");
+ } else {
+ return element.getAttribute("class");
+ }
+ }
+
+ function addClass(element, classValue) {
+ changeElementClass(element, getClassAttribute(element) + " " + classValue);
+ }
+
+ function removeClass(element, classValue) {
+ changeElementClass(element, getClassAttribute(element).replace(classValue, ""));
+ }
+
+ function initTabs() {
+ var container = document.getElementById("tabs");
+
+ tabs.tabs = findTabs(container);
+ tabs.titles = findTitles(tabs.tabs);
+ tabs.headers = findHeaders(container);
+ tabs.select = select;
+ tabs.deselectAll = deselectAll;
+ tabs.select(0);
+
+ return true;
+ }
+
+ function getCheckBox() {
+ return document.getElementById("line-wrapping-toggle");
+ }
+
+ function getLabelForCheckBox() {
+ return document.getElementById("label-for-line-wrapping-toggle");
+ }
+
+ function findCodeBlocks() {
+ var spans = document.getElementById("tabs").getElementsByTagName("span");
+ var codeBlocks = [];
+ for (var i = 0; i < spans.length; ++i) {
+ if (spans[i].className.indexOf("code") >= 0) {
+ codeBlocks.push(spans[i]);
+ }
+ }
+ return codeBlocks;
+ }
+
+ function forAllCodeBlocks(operation) {
+ var codeBlocks = findCodeBlocks();
+
+ for (var i = 0; i < codeBlocks.length; ++i) {
+ operation(codeBlocks[i], "wrapped");
+ }
+ }
+
+ function toggleLineWrapping() {
+ var checkBox = getCheckBox();
+
+ if (checkBox.checked) {
+ forAllCodeBlocks(addClass);
+ } else {
+ forAllCodeBlocks(removeClass);
+ }
+ }
+
+ function initControls() {
+ if (findCodeBlocks().length > 0) {
+ var checkBox = getCheckBox();
+ var label = getLabelForCheckBox();
+
+ checkBox.onclick = toggleLineWrapping;
+ checkBox.checked = false;
+
+ removeClass(label, "hidden");
+ }
+ }
+
+ function switchTab() {
+ var id = this.id.substr(1);
+
+ for (var i = 0; i < tabs.tabs.length; i++) {
+ if (tabs.tabs[i].id === id) {
+ tabs.select(i);
+ break;
+ }
+ }
+
+ return false;
+ }
+
+ function select(i) {
+ this.deselectAll();
+
+ changeElementClass(this.tabs[i], "tab selected");
+ changeElementClass(this.headers[i], "selected");
+
+ while (this.headers[i].firstChild) {
+ this.headers[i].removeChild(this.headers[i].firstChild);
+ }
+
+ var h2 = document.createElement("H2");
+
+ h2.appendChild(document.createTextNode(this.titles[i]));
+ this.headers[i].appendChild(h2);
+ }
+
+ function deselectAll() {
+ for (var i = 0; i < this.tabs.length; i++) {
+ changeElementClass(this.tabs[i], "tab deselected");
+ changeElementClass(this.headers[i], "deselected");
+
+ while (this.headers[i].firstChild) {
+ this.headers[i].removeChild(this.headers[i].firstChild);
+ }
+
+ var a = document.createElement("A");
+
+ a.setAttribute("id", "ltab" + i);
+ a.setAttribute("href", "#tab" + i);
+ a.onclick = switchTab;
+ a.appendChild(document.createTextNode(this.titles[i]));
+
+ this.headers[i].appendChild(a);
+ }
+ }
+
+ function findTabs(container) {
+ return findChildElements(container, "DIV", "tab");
+ }
+
+ function findHeaders(container) {
+ var owner = findChildElements(container, "UL", "tabLinks");
+ return findChildElements(owner[0], "LI", null);
+ }
+
+ function findTitles(tabs) {
+ var titles = [];
+
+ for (var i = 0; i < tabs.length; i++) {
+ var tab = tabs[i];
+ var header = findChildElements(tab, "H2", null)[0];
+
+ header.parentNode.removeChild(header);
+
+ if (header.innerText) {
+ titles.push(header.innerText);
+ } else {
+ titles.push(header.textContent);
+ }
+ }
+
+ return titles;
+ }
+
+ function findChildElements(container, name, targetClass) {
+ var elements = [];
+ var children = container.childNodes;
+
+ for (var i = 0; i < children.length; i++) {
+ var child = children.item(i);
+
+ if (child.nodeType === 1 && child.nodeName === name) {
+ if (targetClass && child.className.indexOf(targetClass) < 0) {
+ continue;
+ }
+
+ elements.push(child);
+ }
+ }
+
+ return elements;
+ }
+
+ // Entry point.
+
+ window.onload = function() {
+ initTabs();
+ initControls();
+ };
+} (window, window.document));
\ No newline at end of file
diff --git a/build/reports/tests/test/packages/default-package.html b/build/reports/tests/test/packages/default-package.html
new file mode 100644
index 0000000..64bd4c6
--- /dev/null
+++ b/build/reports/tests/test/packages/default-package.html
@@ -0,0 +1,103 @@
+
+
+
+
+
+Test results - Default package
+
+
+
+
+
+
+
Default package
+
+
+
+
+
+
+
+
+|
+
+ |
+
+
+ |
+
+
+ |
+
+
+ |
+
+
+
+ |
+
+
+ |
+
+
+
+
+
+
+
Classes
+
+
+
+| Class |
+Tests |
+Failures |
+Ignored |
+Duration |
+Success rate |
+
+
+
+|
+Product0rderTest
+ |
+1 |
+0 |
+0 |
+0.048s |
+100% |
+
+
+
+
+
+
+
+
diff --git a/build/resources/main/log4j2.xml b/build/resources/main/log4j2.xml
new file mode 100644
index 0000000..9abe926
--- /dev/null
+++ b/build/resources/main/log4j2.xml
@@ -0,0 +1,20 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/build/test-results/test/TEST-Product0rderTest.xml b/build/test-results/test/TEST-Product0rderTest.xml
new file mode 100644
index 0000000..6c2edb4
--- /dev/null
+++ b/build/test-results/test/TEST-Product0rderTest.xml
@@ -0,0 +1,31 @@
+
+
+
+
+
+
+
diff --git a/build/test-results/test/binary/output.bin b/build/test-results/test/binary/output.bin
new file mode 100644
index 0000000..24967a5
--- /dev/null
+++ b/build/test-results/test/binary/output.bin
@@ -0,0 +1,24 @@
+{35={apple=8}}
+{38={apple=8}}
+{30={apple=8}}
+{31={apple=8}}
+{29={apple=8}}
+{33={apple=8}}
+{27={apple=8}}
+{37={apple=8}}
+{34={apple=8}}
+{36={apple=8}}
+{28={apple=8}}
+{32={apple=8}}
+2025-01-07 22:19:54 [pool-2-thread-9] INFO PurchaseServiceSynchronizedTest - Thread 35 주문 정보 : 1건 [8] : 남은 수량 4
+2025-01-07 22:19:54 [pool-2-thread-6] INFO PurchaseServiceSynchronizedTest - Thread 32 주문 정보 : 1건 [8] : 남은 수량 4
+2025-01-07 22:19:54 [pool-2-thread-10] INFO PurchaseServiceSynchronizedTest - Thread 36 주문 정보 : 1건 [8] : 남은 수량 4
+2025-01-07 22:19:54 [pool-2-thread-12] INFO PurchaseServiceSynchronizedTest - Thread 38 주문 정보 : 1건 [8] : 남은 수량 4
+2025-01-07 22:19:54 [pool-2-thread-11] INFO PurchaseServiceSynchronizedTest - Thread 37 주문 정보 : 1건 [8] : 남은 수량 4
+2025-01-07 22:19:54 [pool-2-thread-3] INFO PurchaseServiceSynchronizedTest - Thread 29 주문 정보 : 1건 [8] : 남은 수량 4
+2025-01-07 22:19:54 [pool-2-thread-5] INFO PurchaseServiceSynchronizedTest - Thread 31 주문 정보 : 1건 [8] : 남은 수량 4
+2025-01-07 22:19:54 [pool-2-thread-1] INFO PurchaseServiceSynchronizedTest - Thread 27 주문 정보 : 1건 [8] : 남은 수량 4
+2025-01-07 22:19:54 [pool-2-thread-4] INFO PurchaseServiceSynchronizedTest - Thread 30 주문 정보 : 1건 [8] : 남은 수량 4
+2025-01-07 22:19:54 [pool-2-thread-2] INFO PurchaseServiceSynchronizedTest - Thread 28 주문 정보 : 1건 [8] : 남은 수량 4
+2025-01-07 22:19:54 [pool-2-thread-7] INFO PurchaseServiceSynchronizedTest - Thread 33 주문 정보 : 1건 [8] : 남은 수량 4
+2025-01-07 22:19:54 [pool-2-thread-8] INFO PurchaseServiceSynchronizedTest - Thread 34 주문 정보 : 1건 [8] : 남은 수량 4
diff --git a/build/test-results/test/binary/output.bin.idx b/build/test-results/test/binary/output.bin.idx
new file mode 100644
index 0000000..7a0db75
Binary files /dev/null and b/build/test-results/test/binary/output.bin.idx differ
diff --git a/build/test-results/test/binary/results.bin b/build/test-results/test/binary/results.bin
new file mode 100644
index 0000000..1e66c0c
Binary files /dev/null and b/build/test-results/test/binary/results.bin differ
diff --git a/build/tmp/compileJava/previous-compilation-data.bin b/build/tmp/compileJava/previous-compilation-data.bin
new file mode 100644
index 0000000..484b82e
Binary files /dev/null and b/build/tmp/compileJava/previous-compilation-data.bin differ
diff --git a/build/tmp/compileTestJava/previous-compilation-data.bin b/build/tmp/compileTestJava/previous-compilation-data.bin
new file mode 100644
index 0000000..5eeffee
Binary files /dev/null and b/build/tmp/compileTestJava/previous-compilation-data.bin differ
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..41d9927
Binary files /dev/null and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..41dfb87
--- /dev/null
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.4-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/gradlew b/gradlew
new file mode 100755
index 0000000..1b6c787
--- /dev/null
+++ b/gradlew
@@ -0,0 +1,234 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+#
+# Gradle start up script for POSIX generated by Gradle.
+#
+# Important for running:
+#
+# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+# noncompliant, but you have some other compliant shell such as ksh or
+# bash, then to run this script, type that shell name before the whole
+# command line, like:
+#
+# ksh Gradle
+#
+# Busybox and similar reduced shells will NOT work, because this script
+# requires all of these POSIX shell features:
+# * functions;
+# * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+# «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+# * compound commands having a testable exit status, especially «case»;
+# * various built-in commands including «command», «set», and «ulimit».
+#
+# Important for patching:
+#
+# (2) This script targets any POSIX shell, so it avoids extensions provided
+# by Bash, Ksh, etc; in particular arrays are avoided.
+#
+# The "traditional" practice of packing multiple parameters into a
+# space-separated string is a well documented source of bugs and security
+# problems, so this is (mostly) avoided, by progressively accumulating
+# options in "$@", and eventually passing that to Java.
+#
+# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+# see the in-line comments for details.
+#
+# There are tweaks for specific operating systems such as AIX, CygWin,
+# Darwin, MinGW, and NonStop.
+#
+# (3) This script is generated from the Groovy template
+# https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+# within the Gradle project.
+#
+# You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+ APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path
+ [ -h "$app_path" ]
+do
+ ls=$( ls -ld "$app_path" )
+ link=${ls#*' -> '}
+ case $link in #(
+ /*) app_path=$link ;; #(
+ *) app_path=$APP_HOME$link ;;
+ esac
+done
+
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+
+APP_NAME="Gradle"
+APP_BASE_NAME=${0##*/}
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+ echo "$*"
+} >&2
+
+die () {
+ echo
+ echo "$*"
+ echo
+ exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in #(
+ CYGWIN* ) cygwin=true ;; #(
+ Darwin* ) darwin=true ;; #(
+ MSYS* | MINGW* ) msys=true ;; #(
+ NONSTOP* ) nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+ if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+ # IBM's JDK on AIX uses strange locations for the executables
+ JAVACMD=$JAVA_HOME/jre/sh/java
+ else
+ JAVACMD=$JAVA_HOME/bin/java
+ fi
+ if [ ! -x "$JAVACMD" ] ; then
+ die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+ fi
+else
+ JAVACMD=java
+ which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+ case $MAX_FD in #(
+ max*)
+ MAX_FD=$( ulimit -H -n ) ||
+ warn "Could not query maximum file descriptor limit"
+ esac
+ case $MAX_FD in #(
+ '' | soft) :;; #(
+ *)
+ ulimit -n "$MAX_FD" ||
+ warn "Could not set maximum file descriptor limit to $MAX_FD"
+ esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+# * args from the command line
+# * the main class name
+# * -classpath
+# * -D...appname settings
+# * --module-path (only if needed)
+# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+ APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+ CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+ JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+ # Now convert the arguments - kludge to limit ourselves to /bin/sh
+ for arg do
+ if
+ case $arg in #(
+ -*) false ;; # don't mess with options #(
+ /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath
+ [ -e "$t" ] ;; #(
+ *) false ;;
+ esac
+ then
+ arg=$( cygpath --path --ignore --mixed "$arg" )
+ fi
+ # Roll the args list around exactly as many times as the number of
+ # args, so each arg winds up back in the position where it started, but
+ # possibly modified.
+ #
+ # NB: a `for` loop captures its iteration list before it begins, so
+ # changing the positional parameters here affects neither the number of
+ # iterations, nor the values presented in `arg`.
+ shift # remove old arg
+ set -- "$@" "$arg" # push replacement arg
+ done
+fi
+
+# Collect all arguments for the java command;
+# * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
+# shell script including quotes and variable substitutions, so put them in
+# double quotes to make sure that they get re-expanded; and
+# * put everything else in single quotes, so that it's not re-expanded.
+
+set -- \
+ "-Dorg.gradle.appname=$APP_BASE_NAME" \
+ -classpath "$CLASSPATH" \
+ org.gradle.wrapper.GradleWrapperMain \
+ "$@"
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+# readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+# set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+ printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+ xargs -n1 |
+ sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+ tr '\n' ' '
+ )" '"$@"'
+
+exec "$JAVACMD" "$@"
diff --git a/gradlew.bat b/gradlew.bat
new file mode 100644
index 0000000..107acd3
--- /dev/null
+++ b/gradlew.bat
@@ -0,0 +1,89 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/settings.gradle b/settings.gradle
new file mode 100644
index 0000000..01b8e85
--- /dev/null
+++ b/settings.gradle
@@ -0,0 +1,2 @@
+rootProject.name = 'hanghae_pre'
+
diff --git a/src/main/java/Order.java b/src/main/java/Order.java
new file mode 100644
index 0000000..9feab85
--- /dev/null
+++ b/src/main/java/Order.java
@@ -0,0 +1,36 @@
+import lombok.Getter;
+
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+@Getter
+public class Order {
+ private long userId;
+ private final String productName;
+ private int orderQuantity;
+
+ ConcurrentHashMap> latestOrderDatabase = new ConcurrentHashMap<>();
+
+ Order(long userId, String productName, int orderQuantity){
+ this.userId = userId;
+ this.productName = productName;
+ this.orderQuantity = orderQuantity;
+ }
+ void order (Order order){
+
+ latestOrderDatabase.compute(String.valueOf(order.getUserId()), (key, existingMap) -> {
+ if (existingMap == null) {
+ existingMap = new ConcurrentHashMap<>();
+ }
+ existingMap.put(order.getProductName(), order.getOrderQuantity());
+ return existingMap;
+ });
+
+ /* Map map = new HashMap<>();
+ map.put(order.getProductName(),order.getOrderQuantity());
+ latestOrderDatabase.put(String.valueOf(order.userId),map);*/
+ }
+
+
+
+}
diff --git a/src/main/java/ProductSychronized.java b/src/main/java/ProductSychronized.java
new file mode 100644
index 0000000..b2b51b1
--- /dev/null
+++ b/src/main/java/ProductSychronized.java
@@ -0,0 +1,30 @@
+import lombok.Getter;
+
+@Getter
+public class ProductSychronized {
+ /*
+ * synchronized 단일 메서드나 코드 블록의 실행을 한 번에 하나의 스레드만 허용
+ * 장점 1. 작업 단위의 무결성을 보장 (동시성 해결 보장)
+ * 단점 1. 성능저하
+ * - 한 스레드가 동기화된 코드에 진입시, 다른 스레드는 작업 완료시까지 대기해야함. 경쟁이 심한 경우, cpu리소스 낭비와 응답시간 증가의 가능성
+ * - 모든 접근 (읽기, 쓰기)에 대해 락을 사용하여 읽기에도 락이 걸리기에 성능 저하 발생 가능성
+ * 2. 정밀한 제어 불가능
+ * - 동기화 범위를 세밀하게 제어하기 어려움 -> 블록이 끝날때까지 락이 유지되기에, 조기에 해제하거나 조건에 따라 동작 변경 불가
+ * 3. 교착상태(deadlock)의 위험
+ * - 두 스레드가 서로 다른 자원을 락을 통해 요청하면서 상대 스레드가 해제하기를 기다림
+ * 4. 타임아웃 지원 없음
+ * - 스레드는 락을 기다리며 무한대기
+ * */
+ private final String name;
+ private int stock;
+ ProductSychronized(){
+ this.name = "apple";
+ this.stock = 100;
+ }
+ synchronized void decreaseStock(int quantity){
+ if(stock < quantity){
+ throw new IllegalStateException("재고가 부족합니다.");
+ }
+ stock -= quantity;
+ }
+}
diff --git a/src/main/java/PurchaseServiceSychronized.java b/src/main/java/PurchaseServiceSychronized.java
new file mode 100644
index 0000000..9153c80
--- /dev/null
+++ b/src/main/java/PurchaseServiceSychronized.java
@@ -0,0 +1,19 @@
+import lombok.Getter;
+
+@Getter
+public class PurchaseServiceSychronized {
+
+ private int appleStock;
+ private final int purchaseLimit;
+ public PurchaseServiceSychronized() {
+ this.appleStock = 100; // 초기 재고 100개
+ this.purchaseLimit = 8; // 구매 제한 8개
+ }
+ public synchronized void purchase() {
+ if (appleStock >= purchaseLimit) {
+ appleStock -= purchaseLimit; // 재고 차감
+ } else {
+ throw new IllegalStateException("재고가 부족합니다."); // 재고 부족 시 예외 발생
+ }
+ }
+}
diff --git a/src/main/resources/log4j2.xml b/src/main/resources/log4j2.xml
new file mode 100644
index 0000000..9abe926
--- /dev/null
+++ b/src/main/resources/log4j2.xml
@@ -0,0 +1,20 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/src/test/java/Product0rderTest.java b/src/test/java/Product0rderTest.java
new file mode 100644
index 0000000..b388337
--- /dev/null
+++ b/src/test/java/Product0rderTest.java
@@ -0,0 +1,59 @@
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class Product0rderTest {
+
+ private static final Logger logger = LogManager.getLogger(PurchaseServiceSynchronizedTest.class);
+
+ @Test
+ @DisplayName("재고테스트")
+ void Product0rderTest() throws InterruptedException {
+
+ // given
+ final int orderQuantity = 8;
+
+ ProductSychronized service = new ProductSychronized();
+ ExecutorService executor = Executors.newFixedThreadPool(100);
+ CountDownLatch counter = new CountDownLatch(12);
+
+ // when
+ for (int i = 0; i < 12; i++) {
+ executor.execute(() -> {
+
+ service.decreaseStock(orderQuantity);
+
+ Order set = new Order(Thread.currentThread().getId(), service.getName(), 8);
+ set.order(set);
+
+ System.out.println(set.getLatestOrderDatabase());
+
+ logger.info("Thread {} 주문 정보 : 1건 [{}] : 남은 수량 {}", Thread.currentThread().getId(), orderQuantity, service.getStock());
+ counter.countDown();
+ });
+ }
+
+ // 모든 작업 완료 대기
+ counter.await();
+
+ // 스레드 풀 종료
+ executor.shutdown();
+ if (!executor.awaitTermination(10, TimeUnit.SECONDS)) {
+ executor.shutdownNow(); // 강제 종료
+ }
+
+ // then
+ int finalStock = service.getStock();
+ int expecedStock = 4;
+ assertEquals(expecedStock, finalStock, "최종 값 예상한 값과 같아야 합니다.");
+
+ }
+}
diff --git a/src/test/java/ProductSynchronizedTest.java b/src/test/java/ProductSynchronizedTest.java
new file mode 100644
index 0000000..d67ab78
--- /dev/null
+++ b/src/test/java/ProductSynchronizedTest.java
@@ -0,0 +1,51 @@
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class ProductSynchronizedTest {
+
+ private static final Logger logger = LogManager.getLogger(PurchaseServiceSynchronizedTest.class);
+
+ @Test
+ @DisplayName("재고테스트")
+ void purchaseChronizedTest() throws InterruptedException {
+
+ // given
+ final int orderQuantity = 8;
+ ProductSychronized service = new ProductSychronized();
+ ExecutorService executor = Executors.newFixedThreadPool(100);
+ CountDownLatch counter = new CountDownLatch(12);
+
+ // when
+ for (int i = 0; i < 12; i++) {
+ executor.execute(() -> {
+
+ service.decreaseStock(orderQuantity);
+ logger.info("Thread {} 주문 정보 : 1건 [{}] : 남은 수량 {}", Thread.currentThread().getId(), orderQuantity, service.getStock());
+ counter.countDown();
+ });
+ }
+
+ // 모든 작업 완료 대기
+ counter.await();
+
+ // 스레드 풀 종료
+ executor.shutdown();
+ if (!executor.awaitTermination(10, TimeUnit.SECONDS)) {
+ executor.shutdownNow(); // 강제 종료
+ }
+
+ // then
+ int finalStock = service.getStock();
+ int expecedStock = 4;
+ assertEquals(expecedStock, finalStock, "최종 값 예상한 값과 같아야 합니다.");
+ }
+}
diff --git a/src/test/java/PurchaseServiceSynchronizedTest.java b/src/test/java/PurchaseServiceSynchronizedTest.java
new file mode 100644
index 0000000..5ec573f
--- /dev/null
+++ b/src/test/java/PurchaseServiceSynchronizedTest.java
@@ -0,0 +1,60 @@
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class PurchaseServiceSynchronizedTest {
+
+ private static final Logger logger = LogManager.getLogger(PurchaseServiceSynchronizedTest.class);
+
+ @Test
+ @DisplayName("주문 량은 8 로 고정, 사과 재고는 100개, 12번의 구매시점에 사과는 4개만 남는다")
+ void 테스트() throws InterruptedException {
+
+ // given
+ PurchaseServiceSychronized service = new PurchaseServiceSychronized();
+
+ // 스레드 카운트는 100으로 고정
+ ExecutorService executor = Executors.newFixedThreadPool(100);
+ CountDownLatch counter = new CountDownLatch(12);
+
+ // when
+ for (int i = 0; i < 12; i++) {
+ executor.execute(() -> {
+
+ long threadId = Thread.currentThread().getId();
+
+ service.purchase();
+
+ logger.info("Thread {} 주문 정보 : apple: 1건 [{}]", threadId, service.getPurchaseLimit());
+
+ counter.countDown();
+ });
+ }
+
+ // 모든 작업 완료 대기
+ counter.await();
+
+ // 스레드 풀 종료
+ executor.shutdown();
+ if (!executor.awaitTermination(10, TimeUnit.SECONDS)) {
+ executor.shutdownNow(); // 강제 종료
+ }
+
+ // then
+ int finalStock = service.getAppleStock();
+ int expectedStock = 4;
+
+ assertEquals(finalStock, expectedStock,"사과의 재고는 예상한 값과 같아야 합니다.");
+ //assertEquals(apple, result, "Click count는 예상한 값과 같아야 합니다.");
+ }
+}