enhance some test method to LanceFileFormatTest class

[hashmapybx]

Purpose

Linked issue:

This PR enhances the test coverage for the Lance file format implementation in Paimon. The changes include:

1. Fix compilation errors: Corrected incorrect usage of generic parameters for FileWriter interface

2. Comprehensive test coverage: Added 14 new test methods covering:

   • All supported numeric types (TINYINT, SMALLINT, INT, BIGINT, FLOAT, DOUBLE, DECIMAL)
   • All string and binary types (CHAR, VARCHAR, BINARY, VARBINARY, BYTES)
   • Time-related types (DATE, TIME, TIMESTAMP with various precisions)
   • Complex types (ARRAY, MULTISET, VARIANT)
   • Nested RowType structures
   • Unsupported types validation (MAP, TIMESTAMP_WITH_LOCAL_TIME_ZONE)
   • Configuration tests for batch size and memory settings
   • Projection scenarios for column pruning
   • Edge cases (empty RowType, single field types, mixed array types)

3. Documentation improvements: Added descriptive comments for all test methods to improve code readability and maintainability

Tests

• LanceFileFormatTest unit tests in paimon-lance/src/test/java/org/apache/paimon/format/lance/LanceFileFormatTest.java

All 16 test methods verify:

• testCreateReaderFactory - Basic reader factory creation
• testCreateWriterFactory - Basic writer factory creation
• testValidateDataFields_UnsupportedType_Map - Validation rejects MAP type
• testValidateDataFields_UnsupportedType_LocalZonedTimestamp - Validation rejects TIMESTAMP_WITH_LOCAL_TIME_ZONE
• testValidateDataFields_SupportedTypes_Basic - Basic supported types validation
• testValidateDataFields_AllNumericTypes - All numeric types validation
• testValidateDataFields_AllStringTypes - All string/binary types validation
• testValidateDataFields_TimeTypes - Time types with different precisions
• testValidateDataFields_ComplexTypes - Arrays, multisets, and variants
• testValidateDataFields_NestedRowType - Nested structures
• testReaderFactory_WithProjectedTypes - Column pruning scenarios
• testReaderFactory_BatchSizeConfiguration - Batch size configuration
• testWriterFactory_BatchSizeConfiguration - Writer batch and memory configuration
• testValidateDataFields_EmptyRowType - Edge case: empty RowType
• testValidateDataFields_SingleFieldTypes - Single field type scenarios
• testValidateDataFields_MixedArrayTypes - Mixed array element types
• testValidateDataFields_VariantType - VARIANT type support

API and Format

No. This change only affects test code and does not modify any public APIs or storage formats.

Documentation

No. This is a test enhancement with no new features introduced.