commonlib: Add convenience method to get all PolicyTag tags

Signed-off-by: kingthorin <kingthorin@users.noreply.github.com>

addOns/commonlib/src/main/java/org/zaproxy/addon/commonlib/PolicyTag.java

@@ -19,6 +19,10 @@
  */
 package org.zaproxy.addon.commonlib;
 
+import java.util.List;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
 /**
  * Tags to be associated with standardized scan policies which will be distributed as an add-on.
  *
@@ -43,4 +47,8 @@ private PolicyTag() {
     public String getTag() {
         return this.tag;
     }
+
+    public static List<String> getAllTags() {
+        return Stream.of(PolicyTag.values()).map(PolicyTag::getTag).collect(Collectors.toList());
+    }
 }

addOns/commonlib/src/test/java/org/zaproxy/addon/commonlib/PolicyTagUnitTest.java

@@ -20,11 +20,14 @@
 package org.zaproxy.addon.commonlib;
 
 import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.equalTo;
 import static org.hamcrest.Matchers.is;
 import static org.hamcrest.Matchers.not;
 import static org.hamcrest.Matchers.startsWith;
 import static org.hamcrest.core.DescribedAs.describedAs;
 
+import java.util.List;
+import org.junit.jupiter.api.Test;
 import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.EnumSource;
 
@@ -44,4 +47,12 @@ void shouldHaveAllTagsStartingWithPolicyyUnderscoreInCapsEnumNamesWithout(Policy
                         "Enum element name should not start with prefix",
                         not(startsWith(PolicyTag.PREFIX))));
     }
+
+    @Test
+    void shouldHaveCompleteListWhenGettingAllTags() {
+        // Given / When
+        List<String> tags = PolicyTag.getAllTags();
+        // Then
+        assertThat(PolicyTag.values().length, is(equalTo(tags.size())));
+    }
 }