fix stubbing error

README.md

@@ -1,6 +1,6 @@
 <!-- First line should be an H1: Badges on top please! -->
 <!-- markdownlint-disable first-line-h1 -->
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+[![Actions](https://github.com/Hapag-Lloyd/log4j2-filtered-stacktrace-plugin/workflows/Release/badge.svg)](https://github.com/Hapag-Lloyd/log4j2-filtered-stacktrace-plugin/actions)
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 <!-- markdownlint-enable first-line-h1 -->
 
@@ -20,7 +20,7 @@ We replaced the main logic completely.
 Adding the filter to the logging configuration with `<EventTemplateAdditionalField key="error" format="JSON" value='{"$resolver": "filteredStacktraceException"}'/>`
 produces the following Json object in the log stream:
 
-<!-- no line breaks in Json please -->
+<!-- no line breaks in Json please, we are fine with long lines here -->
 <!-- markdownlint-disable line-length -->
 ```json
 "error": {
@@ -41,24 +41,26 @@ produces the following Json object in the log stream:
 Include the following artifact to your project which contains the `log4j2.xml` configuration file. Make sure to use the newest version.
 
 ```xml
+<!-- pom.xml -->
 <dependency>
     <groupId>com.hlag.logging</groupId>
     <artifactId>log4j2-stacktrace-filter</artifactId>
     <!-- make sure to use the newest version -->
-    <version>1.0.0</version>
+    <version>1.3.0</version>
 </dependency>
 ```
 
 ## Log4j2 Configuration
 
-<!-- no line breaks in Json please -->
+<!-- no line breaks in Json please, we are fine with long lines here -->
 <!-- markdownlint-disable line-length -->
 ```xml
 <?xml version="1.0" encoding="UTF-8"?>
+<!-- log4j2.xml -->
 <Configuration status="INFO">
 
     <Appenders>
-        <Console name="console-datadog" target="SYSTEM_OUT">
+        <Console name="console" target="SYSTEM_OUT">
             <JsonTemplateLayout eventTemplateUri="classpath:JsonLayout.json" maxStringLength="32768"  stackTraceEnabled="false">
                 <EventTemplateAdditionalField key="error" format="JSON"
                                               value='{"$resolver": "filteredStacktraceException"}, "additionalPackagesToIgnore": ["com.hlag.logging.log4j2."]}' />
@@ -79,3 +81,10 @@ Include the following artifact to your project which contains the `log4j2.xml` c
 
 Use this parameter to add other packages to the built-in list. These packages are ignored too. Especially useful if you have to
 include company internal frameworks, but you don't want to see them in the stacktrace.
+
+Makes no sense to specify `whitelistedPackages` in addition to this parameter.
+
+### whitelistPackages
+
+Use this parameter to add packages which should not be ignored. This is useful if you want to ignore all packages except a few. The
+built-in list is ignored in this case as well as `additionalPackagesToIgnore`.

src/test/java/com/hlag/logging/log4j2/FilteredStacktraceExceptionResolverUnitTest.java

@@ -15,6 +15,7 @@
 import org.mockito.Mockito;
 import org.mockito.junit.jupiter.MockitoExtension;
 
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.LinkedList;
 import java.util.List;
@@ -38,6 +39,7 @@ void setUp() {
         Mockito.lenient().when(mockedEventResolverContext.getMaxStringByteCount()).thenReturn(10000);
 
         Mockito.when(mockedConfig.getList("additionalPackagesToIgnore", String.class)).thenReturn(PACKAGE_TO_REMOVE_FROM_STACKTRACE);
+        Mockito.when(mockedConfig.getList("whitelistPackages", String.class)).thenReturn(new ArrayList<>());
 
         jsonWriter = JsonWriter.newBuilder().setMaxStringLength(10000).setTruncatedStringSuffix("...").build();