feat: add error report when default value is invalid

[marxoffice]

Improved Error Reporting Mechanism - Pull Request

Overview

This patch includes two major improvements aimed at enhancing the error reporting friendliness.

Commit Contents

Commit 1: Improved Error Reporting for Invalid Default Values (5058a89)

Key Improvements:

• Added detailed error wrapping mechanism in the setField function
• Error messages now include field name, default value, and original error details
• Modified error handling logic for all basic data types

Error Report Example:

type ErrIntDefault struct {
	ErrInt int `default:"abc"`
}

will report error

error on set Field:[ErrInt], DefaultValue:[abc] Error:[strconv.ParseInt: parsing "abc": invalid syntax]

Commit 2: Improved Subfield Error Reporting (df4441b)

Key Improvements:

• Fixed the issue of error propagation in nested structures
• Ensured that errors in pointer type fields are correctly propagated upward

Test Case Example:

type SubErrorDefault struct {
    ErrSlice  []string \`default:"[1,2,3]"\`  // Error here, correct default value is ["1", "2", "3"]
    NormalInt int      \`default:"1"\`
}

type ParentErrorDefault struct {
    NormalInt  int              \`default:"1"\`
    ErrChild   *SubErrorDefault \`default:"{}"\`
    NormalBool bool             \`default:"true"\`
}

// Before This Commit
Set(&SubErrorDefault{}) // will report error because parse json failed
Set(&ParentErrorDefault{}) // will not report error

// After This Commit
Set(&SubErrorDefault{}) // will report error because parse json failed
Set(&ParentErrorDefault{}) // will report error because set ErrChild failed

Usage Example

When using invalid default values in configuration structures, clear error information is now provided:

type Config struct {
    Port     int    \`default:"abc"\`  // Invalid integer value
    Timeout  string \`default:"30s"\` // Valid string value
}

cfg := &Config{}
if err := defaults.Set(cfg); err != nil {
    // Error message: error on set Field:[Port], DefaultValue:[abc] Error:[strconv.ParseInt: parsing "abc": invalid syntax]
    fmt.Println(err)
}

Summary

These improvements make the defaults library provide more friendly and detailed error information when encountering configuration errors.

[codecov]

Codecov Report

❌ Patch coverage is 95.52239% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 96.68%. Comparing base (abebf4b) to head (6c20eed).

Files with missing lines	Patch %	Lines
defaults.go	95.52%	0 Missing and 3 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #59      +/-   ##
==========================================
+ Coverage   95.97%   96.68%   +0.71%     
==========================================
  Files           2        2              
  Lines         149      181      +32     
==========================================
+ Hits          143      175      +32     
  Misses          3        3              
  Partials        3        3              

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