From 2fec9da2d5dd5955e0d1bd1e09873636132c1a70 Mon Sep 17 00:00:00 2001
From: Felipe Santiago Corro <santiago.corro@gmail.com>
Date: Sun, 22 Jul 2018 17:36:51 -0300
Subject: [PATCH] Overriding System time for testing (#4779)

* Overriding System time for testing

* Remove Joda Date Time examples
---
 core-java-8/pom.xml                                   | 11 +++++++++++
 .../aspect/ChangeCallsToCurrentTimeInMillisMethod.aj  |  9 +++++++++
 .../com/baeldung/util/CurrentDateTimeUnitTest.java    |  4 +++-
 3 files changed, 23 insertions(+), 1 deletion(-)
 create mode 100644 core-java-8/src/main/java/com/baeldung/aspect/ChangeCallsToCurrentTimeInMillisMethod.aj

diff --git a/core-java-8/pom.xml b/core-java-8/pom.xml
index dee0634951..7e3b8cb280 100644
--- a/core-java-8/pom.xml
+++ b/core-java-8/pom.xml
@@ -99,6 +99,16 @@
             <artifactId>joda-time</artifactId>
             <version>${joda.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.aspectj</groupId>
+            <artifactId>aspectjrt</artifactId>
+            <version>${asspectj.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.aspectj</groupId>
+            <artifactId>aspectjweaver</artifactId>
+            <version>${asspectj.version}</version>
+        </dependency>
     </dependencies>
 
     <build>
@@ -170,6 +180,7 @@
         <joda.version>2.10</joda.version>
         <!-- testing -->
         <assertj.version>3.6.1</assertj.version>
+        <asspectj.version>1.8.9</asspectj.version>
         <avaitility.version>1.7.0</avaitility.version>
         <jmh-core.version>1.19</jmh-core.version>
         <jmh-generator.version>1.19</jmh-generator.version>
diff --git a/core-java-8/src/main/java/com/baeldung/aspect/ChangeCallsToCurrentTimeInMillisMethod.aj b/core-java-8/src/main/java/com/baeldung/aspect/ChangeCallsToCurrentTimeInMillisMethod.aj
new file mode 100644
index 0000000000..b28bebfdaf
--- /dev/null
+++ b/core-java-8/src/main/java/com/baeldung/aspect/ChangeCallsToCurrentTimeInMillisMethod.aj
@@ -0,0 +1,9 @@
+package com.baeldung.aspect;
+
+public aspect ChangeCallsToCurrentTimeInMillisMethod {
+    long around():
+            call(public static native long java.lang.System.currentTimeMillis())
+                    && within(user.code.base.pckg.*) {
+        return 0;
+    }
+}
diff --git a/core-java-8/src/test/java/com/baeldung/util/CurrentDateTimeUnitTest.java b/core-java-8/src/test/java/com/baeldung/util/CurrentDateTimeUnitTest.java
index 3ad3deb548..1689a5054d 100644
--- a/core-java-8/src/test/java/com/baeldung/util/CurrentDateTimeUnitTest.java
+++ b/core-java-8/src/test/java/com/baeldung/util/CurrentDateTimeUnitTest.java
@@ -1,6 +1,7 @@
 package com.baeldung.util;
 
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
 
 import java.time.Clock;
 import java.time.Instant;
@@ -9,6 +10,8 @@ import java.time.LocalTime;
 import java.time.ZoneId;
 import java.time.temporal.ChronoField;
 
+import org.joda.time.DateTime;
+import org.joda.time.DateTimeUtils;
 import org.junit.Test;
 
 public class CurrentDateTimeUnitTest {
@@ -39,5 +42,4 @@ public class CurrentDateTimeUnitTest {
 
         assertEquals(clock.instant().getEpochSecond(), now.getEpochSecond());
     }
-
 }