fix: handle number 0 as valid label in SingleContent

[zombieJ]

• Fix logic bug where number 0 was incorrectly excluded from has-value className
• Update condition to explicitly check null, undefined, and empty string
• Add test case for number 0 value display

Summary by CodeRabbit

Bug Fixes

• 修复了 Select 组件在处理数值 0 时的边界情况问题。现在数值 0 会被正确识别为有效值，而不是被误处理为空值。

Tests

• 添加了测试用例以验证 Select 组件对数值 0 的正确处理，确保该边界情况得到妥善处理。

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Project	Deployment	Actions	Updated (UTC)
select	Ready	Preview, Comment	Feb 13, 2026 3:14am

[gemini-code-assist]

Summary of Changes

Hello @zombieJ, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request addresses a specific bug in the SelectInput component where a selected value of 0 was not correctly identified as a valid input, leading to incorrect styling. The changes ensure that the component now properly applies the has-value CSS class when 0 is selected, improving the visual consistency and correctness of the UI.

Highlights

• Bug Fix: Corrected a logic error in SingleContent.tsx where the number 0 was not recognized as a valid label, preventing the has-value CSS class from being applied.
• Logic Update: Modified the condition for applying the has-value class to explicitly check for null, undefined, and empty string, ensuring 0 is now correctly handled.
• Test Coverage: Introduced a new test case in Select.test.tsx to specifically verify the correct behavior when 0 is used as a selected value.

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Changelog

• src/SelectInput/Content/SingleContent.tsx
  • Modified the conditional logic for applying the rc-select-content-has-value class.
  • Expanded the displayValue.label check to explicitly exclude null, undefined, and empty string.
• tests/Select.test.tsx
  • Added a new test case to assert that the rc-select-content-has-value class is present when the Select component's value is 0.

Activity

• No specific activity has been recorded for this pull request yet.

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[coderabbitai]

演练说明

该PR修改了SingleContent.tsx中displayValue标签的条件判断逻辑，从简单的真值检查改为更严格的非空检查，并在测试文件中添加了验证数值0被正确识别为有值的两个测试用例。

变更内容

内聚性 / 文件	摘要
核心逻辑修改 src/SelectInput/Content/SingleContent.tsx	增强了displayValue标签存在性的条件判断，从truthy检查升级为严格的非null、非undefined、非空字符串检查，确保-content-has-value class应用更加精准。
测试覆盖 tests/Select.test.tsx	添加两个测试用例，验证数值0作为Select组件的值时，-content-has-value className被正确应用，确保0不被误判为空值。

预期代码审查工作量

🎯 2 (Simple) | ⏱️ ~10 分钟

可能相关的PR

• fix: use strict null/undefined check for display value in single select #1205: 同样修改了SingleContent.tsx中displayValue的检测逻辑，将简单的真值检查替换为更严格的存在性检查，用于优化-content-has-value class的应用时机。

诗歌

🐰 数字零也有价值哦，
不被空值冷落，
严格判断守护着，
每个状态都闪耀✨

🚥 Pre-merge checks | ✅ 3 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Merge Conflict Detection	⚠️ Warning	⚠️ Unable to check for merge conflicts: Stream setup permanently failed: 13 INTERNAL: Received RST_STREAM with code 2 (Internal server error)

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	标题清晰准确地总结了主要变更：修复数字0作为有效标签的处理问题，与changeset中的核心改动完全相关。
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch fix/number-zero-value-display

⚔️ Resolve merge conflicts (beta)

• Auto-commit resolved conflicts to branch fix/number-zero-value-display
• Create stacked PR with resolved conflicts
• Post resolved changes as copyable diffs in a comment

---

No actionable comments were generated in the recent review. 🎉

🧹 Recent nitpick comments

src/SelectInput/Content/SingleContent.tsx (1)

91-95: 修复正确，可选：条件可以简化。

使用 != null（非严格相等）可以同时覆盖 null 和 undefined，减少一个条件判断：

♻️ 可选简化

-          displayValue &&
-            displayValue.label !== null &&
-            displayValue.label !== undefined &&
-            displayValue.label !== '' &&
-            `${prefixCls}-content-has-value`,
+          displayValue &&
+            displayValue.label != null &&
+            displayValue.label !== '' &&
+            `${prefixCls}-content-has-value`,

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[gemini-code-assist]

Code Review

This pull request fixes a bug where a label with the value 0 was not being displayed correctly. The change adjusts the condition to explicitly check for null, undefined, and empty strings, ensuring 0 is treated as a valid value, and a corresponding test case has been added. No security vulnerabilities were found. My feedback includes a suggestion to make the condition more concise.

[gemini-code-assist]

The condition to check for null and undefined can be simplified. Using the loose inequality operator != null checks for both null and undefined and is a common JavaScript idiom for this purpose. This makes the code more concise.

Suggested change

	displayValue.label !== null &&
	displayValue.label !== undefined &&
	displayValue.label !== '' &&
	displayValue.label != null && displayValue.label !== '' &&

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.43%. Comparing base (89c8e26) to head (01305bd).
⚠️ Report is 2 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1208   +/-   ##
=======================================
  Coverage   99.43%   99.43%           
=======================================
  Files          31       31           
  Lines        1230     1234    +4     
  Branches      441      445    +4     
=======================================
+ Hits         1223     1227    +4     
  Misses          7        7           

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