From ad6ec1a8ad274b9901a6f130390bfb328a3b0f48 Mon Sep 17 00:00:00 2001
From: jeyong <joon6093@naver.com>
Date: Sun, 24 Nov 2024 04:55:19 +0900
Subject: [PATCH] =?UTF-8?q?test:=20=EC=A2=85=EB=A3=8C=20=EC=8B=A0=ED=98=B8?=
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---
 test/build.gradle                             |  1 +
 .../test/unit/SignalHandlerRegistrarTest.java | 33 +++++++++++++++++++
 2 files changed, 34 insertions(+)
 create mode 100644 test/src/test/java/io/jeyong/test/unit/SignalHandlerRegistrarTest.java

diff --git a/test/build.gradle b/test/build.gradle
index 5cdfeb8..d59b9a2 100644
--- a/test/build.gradle
+++ b/test/build.gradle
@@ -28,6 +28,7 @@ dependencies {
     testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
     testImplementation 'org.testcontainers:junit-jupiter:1.20.4'
     testImplementation 'org.testcontainers:testcontainers:1.20.4'
+    testImplementation 'com.github.stefanbirkner:system-lambda:1.2.1'
 }
 
 tasks.named('test') {
diff --git a/test/src/test/java/io/jeyong/test/unit/SignalHandlerRegistrarTest.java b/test/src/test/java/io/jeyong/test/unit/SignalHandlerRegistrarTest.java
new file mode 100644
index 0000000..52f4e6c
--- /dev/null
+++ b/test/src/test/java/io/jeyong/test/unit/SignalHandlerRegistrarTest.java
@@ -0,0 +1,33 @@
+package io.jeyong.test.unit;
+
+import static io.jeyong.handler.SignalHandlerRegistrar.SIGNAL_TYPE;
+import static org.assertj.core.api.Assertions.assertThat;
+
+import io.jeyong.handler.ApplicationTerminator;
+import io.jeyong.handler.SignalHandlerRegistrar;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import sun.misc.Signal;
+import sun.misc.SignalHandler;
+
+@DisplayName("SignalHandlerRegistrar Unit Test")
+public class SignalHandlerRegistrarTest {
+
+    @Test
+    @DisplayName("SignalHandler should be registered correctly")
+    void testSignalHandlerRegistration() {
+        // given
+        SignalHandler mockSignalHandler = signal -> System.out.println("Mock signal handler");
+        ApplicationTerminator applicationTerminator = status -> mockSignalHandler;
+        SignalHandlerRegistrar registrar = new SignalHandlerRegistrar(applicationTerminator);
+
+        // when
+        registrar.registerHandler();
+
+        Signal registeredSignal = new Signal(SIGNAL_TYPE);
+        SignalHandler registeredHandler = Signal.handle(registeredSignal, null);
+
+        // then
+        assertThat(registeredHandler).isEqualTo(mockSignalHandler);
+    }
+}