Map<String, Object> source;
        while ((source = reader.read()) != null) {
            assertTrue(source.get("field1").toString().startsWith("test"));
            valueSet.add(source.get("field1").toString());
            count++;
        }
        assertEquals(num, count);
        assertEquals(num, valueSet.size());
    }

    @Test

        assertEquals("_default:fess", ((TermQuery) query).toString());

        query = queryParser.createDefaultFilterChain().parse("\"fess codelibs\"");
        assertEquals(PhraseQuery.class, query.getClass());
        assertEquals("_default:fess", ((PhraseQuery) query).getTerms()[0].toString());
        assertEquals("_default:codelibs", ((PhraseQuery) query).getTerms()[1].toString());

        String result = facetInfo.toString();
        assertEquals("FacetInfo [field=[field1, field2], query=[query1, query2], size=10, minDocCount=5, sort=count.desc, missing=unknown]",
                result);
    }

    // Test toString method with null fields
    public void test_toString_nullFields() {
        String result = facetInfo.toString();

      assertEquals(entry.getKey() + "=" + entry.getValue(), entry.toString());
    }

    assertEquals("{" + JOINER.join(map.entrySet()) + "}", map.toString());
    assertEquals("[" + JOINER.join(map.entrySet()) + "]", map.entrySet().toString());
    assertEquals("[" + JOINER.join(map.keySet()) + "]", map.keySet().toString());
    assertEquals("[" + JOINER.join(map.values()) + "]", map.values().toString());

            result.setCreatedBy(DfTypeUtil.toString(source.get("createdBy")));
            result.setCreatedTime(DfTypeUtil.toLong(source.get("createdTime")));
            result.setDescription(DfTypeUtil.toString(source.get("description")));
            result.setHandlerName(DfTypeUtil.toString(source.get("handlerName")));
            result.setHandlerParameter(DfTypeUtil.toString(source.get("handlerParameter")));

            result.setCreatedBy(DfTypeUtil.toString(source.get("createdBy")));
            result.setCreatedTime(DfTypeUtil.toLong(source.get("createdTime")));
            result.setExcludedPaths(DfTypeUtil.toString(source.get("excludedPaths")));
            result.setIncludedPaths(DfTypeUtil.toString(source.get("includedPaths")));
            result.setName(DfTypeUtil.toString(source.get("name")));

      }

      @Override
      public String toString() {
        return "Predicates.alwaysTrue()";
      }
    },
    /**
     * @see Predicates#alwaysFalse()
     */
    ALWAYS_FALSE {
      @Override
      public boolean apply(@Nullable Object o) {
        return false;
      }

      @Override
      public String toString() {
        return "Predicates.alwaysFalse()";
      }

        // Assert
        assertEquals(0, result);
    }

    @Test
    @DisplayName("toString should return formatted string with pipe name")
    void testToString() {
        // Arrange
        transWaitNamedPipe = new TransWaitNamedPipe(mockConfig, testPipeName);

        // Act
        String result = transWaitNamedPipe.toString();

        // Assert
        assertNotNull(result);

            result.setExcludedPaths(DfTypeUtil.toString(source.get("excludedPaths")));
            result.setIncludedDocPaths(DfTypeUtil.toString(source.get("includedDocPaths")));
            result.setIncludedPaths(DfTypeUtil.toString(source.get("includedPaths")));
            result.setIntervalTime(DfTypeUtil.toInteger(source.get("intervalTime")));

    }

    @Test
    @DisplayName("toString includes information level in hex")
    void testToString() {
        int level = 0xABC;
        Trans2QueryFSInformation cmd = new Trans2QueryFSInformation(level);
        String str = cmd.toString();
        // toString uses Hexdump.toHexString(informationLevel, 3)
        assertTrue(str.contains(Hexdump.toHexString(level, 3)), "toString should contain hex level");