package com.atlassian.logging.log4j;
   
   import org.junit.Test;
   
   import java.util.Collections;
   import java.util.HashSet;
   import java.util.Set;
   
   import static org.hamcrest.CoreMatchers.equalTo;
  import static org.junit.Assert.assertThat;
  
  public class SplitValueParserTest
  {
      @Test
      public void test_string_parsing() throws Exception
      {
          SplitValueParser parser = new SplitValueParser(",", "prefix_");
          assertThat(parser.parse("val1,val2,val3"), equalTo(setOf("prefix_val1", "prefix_val2", "prefix_val3")));
  
          // empty values
          assertThat(parser.parse("val1,,val3"), equalTo(setOf("prefix_val1", "prefix_val3")));
  
          // trimming
          assertThat(parser.parse(" val1 ,\tval2,\nval3"), equalTo(setOf("prefix_val1", "prefix_val2", "prefix_val3")));
  
          // no data
          assertThat(parser.parse(null), equalTo(setOf()));
          assertThat(parser.parse(""), equalTo(setOf()));
          assertThat(parser.parse(" \t\n"), equalTo(setOf()));
      }
  
      @Test
      public void test_at_syntax() throws Exception
      {
          SplitValueParser parser = new SplitValueParser(",", "prefix_");
  
          assertThat(parser.parse("@filtering/splitvalueparser_test_general.properties"),
                  equalTo(setOf("prefix_val1", "prefix_val2", "prefix_val3", "prefix_val4", "prefix_val5", "prefix_val6")));
  
          assertThat(parser.parse("@filtering/does_not_exist.properties"),
                  equalTo(setOf()));
  
  
          assertThat(parser.parse("@filtering/splitvalueparser_test_empty.properties"),
                  equalTo(setOf()));
  
      }
  
      private Set<String> setOf(final String... vals)
      {
          Set<String> set = new HashSet<>();
          Collections.addAll(set, vals);
          return set;
      }
  }