### Question:
AbstractGroups { public String toLoggingString() { if (isEmpty()) { return ""; } final StringBuilder sb = new StringBuilder(proctorResult.getBuckets().size() * 10); appendTestGroups(sb); if (sb.length() > 0) { sb.deleteCharAt(sb.length() - 1); } return sb.toString(); } protected  AbstractGroups(final ProctorResult proctorResult); String toLongString(); @Override @Deprecated String toString(); String toLoggingString(); @Deprecated final StringBuilder buildTestGroupString(); final void appendTestGroups(final StringBuilder sb); void appendTestGroups(final StringBuilder sb, final char separator); final Map<String, Integer> getJavaScriptConfig(); @Deprecated List<List<Object>> getJavaScriptConfig(final E[] tests); ProctorResult getAsProctorResult(); ProctorResult getRawProctorResult(); @Deprecated ProctorResult getProctorResult();  }### Answer:
@Test public void testToLoggingString() { assertThat((new AbstractGroups(new ProctorResult("0", emptyMap(), emptyMap(), emptyMap())) {}).toLoggingString()).isEmpty(); assertThat(sampleGroups.toLoggingString()).isEqualTo("abtst1,bgtst0,groupwithfallbacktst2,no_definition_tst2,#A1:abtst1,#A1:bgtst0,#A1:groupwithfallbacktst2,#A1:no_definition_tst2"); }