Remove slf4j from unit tests (broken)

pom.xml

@@ -52,6 +52,7 @@
 
     <!-- dependency versions a-z -->
     <dependency.junit.version>4.12</dependency.junit.version>
+    <dependency.log4j.version>2.22.0</dependency.log4j.version>
     <dependency.logback.version>1.2.3</dependency.logback.version>
     <dependency.nativelibloader.version>2.5.0</dependency.nativelibloader.version>
 
@@ -81,6 +82,18 @@
       <artifactId>native-lib-loader</artifactId>
       <version>${dependency.nativelibloader.version}</version>
     </dependency>
+    <dependency>
+      <groupId>org.apache.logging.log4j</groupId>
+      <artifactId>log4j-api</artifactId>
+      <version>${dependency.log4j.version}</version>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.logging.log4j</groupId>
+      <artifactId>log4j-core</artifactId>
+      <version>${dependency.log4j.version}</version>
+      <scope>test</scope>
+    </dependency>
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>

src/test/java/jssc/junit/rules/VirtualPortRule.java

@@ -32,16 +32,18 @@
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 import java.util.concurrent.Future;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
 import jssc.SerialNativeInterface;
 import org.junit.rules.TestRule;
 import org.junit.runner.Description;
 import org.junit.runners.model.Statement;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 public class VirtualPortRule implements TestRule {
 
-  private static final Logger LOG = LoggerFactory.getLogger(VirtualPortRule.class);
+  private static final Logger LOG = LogManager.getLogger(VirtualPortRule.class);
 
   private static final ExecutorService executor = Executors.newCachedThreadPool();
 

src/test/java/resources/log4j.properties

@@ -0,0 +1,4 @@
+# Logging settings for unit tests
+
+# TODO: Why isn't this being recognized/honored by log4j?
+log4j.rootLogger=ALL