Add unit tests for SDK v3 client and transaction packages

[Copilot]

Increases test coverage for org.fisco.bcos.sdk.v3.client and org.fisco.bcos.sdk.v3.transaction packages. The project uses JDK 8 and Jacoco for coverage measurement.

Changes

Client Package (10 test classes)

• Protocol request/response: DefaultBlockParameter*, LogFilterRequest, BlockNumber, BlockHash, PendingTxSize
• Protocol model: GroupStatus, TransactionAttribute
• Exceptions: ClientException

Transaction Package (15 test classes)

• Model exceptions: TransactionException, JsonException, ContractException
• Model DTOs: CommonResponse, CallResponse, CallRequest, ResultCodeEnum
• Model objects: CommonConstant, AbiInfo, BinInfo
• Gas providers: EIP1559Struct, DefaultGasProvider, StaticGasProvider
• Utilities: Convert (Wei/Ether conversion), JsonUtils

Coverage Focus

Tests cover constructors, accessors, equals/hashCode, edge cases (null, empty, boundary values), and business logic:

// Example: Convert utility test
@Test
public void testConversionRoundTrip() {
    String originalEther = "2.5";
    BigDecimal wei = Convert.toWei(originalEther, Convert.Unit.ETHER);
    BigDecimal backToEther = Convert.fromWei(wei, Convert.Unit.ETHER);
    Assert.assertEquals(new BigDecimal("2.5"), backToEther);
}

All tests use existing infrastructure (JUnit 4, Mockito 4.8.0) and maintain JDK 8 compatibility.

Original prompt

当前项目是兼容jdk8，是用jacoco作为测试覆盖组件。请在本项目上继续添加更多的UT来增加覆盖率，特别增加org.fisco.bcos.sdk.v3.client和org.fisco.bcos.sdk.v3.transaction两个package的测试覆盖率，允许添加mock相关的测试组件。

CHAT SUMMARY

TITLE: Add Unit Tests to Increase Code Coverage for FISCO BCOS SDK v3

USER INTENT: The user wants to add more unit tests (UT) to increase test coverage for a JDK8-compatible project that uses Jacoco as the test coverage component, with specific focus on improving coverage for the org.fisco.bcos.sdk.v3.client and org.fisco.bcos.sdk.v3.transaction packages. The user is open to adding mock-related testing components.

TASK DESCRIPTION:

• Add comprehensive unit tests to increase overall test coverage in a FISCO BCOS SDK v3 project
• Focus specifically on two main packages:
  • org.fisco.bcos.sdk.v3.client
  • org.fisco.bcos.sdk.v3.transaction
• Ensure compatibility with JDK 8
• Use Jacoco for test coverage measurement
• Implement mocking frameworks as needed (likely Mockito for JDK8 compatibility)

EXISTING:

• Project is already configured with Jacoco for test coverage
• Project is JDK8 compatible
• The two target packages (org.fisco.bcos.sdk.v3.client and org.fisco.bcos.sdk.v3.transaction) exist and need coverage improvements

PENDING:

• Analyze current test coverage for the target packages
• Identify untested or under-tested classes and methods in:
  • org.fisco.bcos.sdk.v3.client
  • org.fisco.bcos.sdk.v3.transaction
• Design and implement unit tests with appropriate mocking strategies
• Add mock framework dependencies if not already present (e.g., Mockito, PowerMock for JDK8)
• Achieve higher coverage metrics through comprehensive test cases
• Handle edge cases, error conditions, and various code paths

CODE STATE:
No specific files were discussed or modified in this initial request.

RELEVANT CODE/DOCUMENTATION SNIPPETS:
None provided in the conversation.

OTHER NOTES:

• The project appears to be related to FISCO BCOS blockchain SDK (Software Development Kit) version 3
• JDK 8 compatibility constraint is important and will affect choice of testing frameworks and approaches
• Mockito is typically the preferred mocking framework for JDK8 projects
• The user has explicitly authorized the addition of mocking components, indicating complex dependencies may exist in the target packages that require mocking for effective unit testing
• Both target packages (client and transaction) suggest core SDK functionality that likely involves blockchain client operations and transaction handling

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