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@gimlichael gimlichael commented Sep 29, 2024

PR Classification

Documentation and code enhancement.

PR Summary

Improved documentation, examples, and handling of CultureInfo objects, and enhanced test coverage,

  • Cuemon.Extensions.Globalization.md: Clarified namespace purpose and updated examples,
  • CultureInfoExtensions.cs: Fixed typo and added logic for read-only CultureInfo objects,
  • CultureInfoExtensionsTest.cs: Added new test and updated existing tests for better coverage.

Summary by CodeRabbit

  • Documentation
    • Updated documentation for the Cuemon.Extensions.Globalization namespace to clarify its relationship with System.Globalization.
    • Added examples demonstrating the use of National Language Support (NLS) versus International Components for Unicode (ICU).
  • Bug Fixes
    • Improved handling of CultureInfo objects in the UseNationalLanguageSupport method to preserve immutability for read-only cultures.
  • Tests
    • Introduced new tests for national language support formatting differences across platforms.
    • Renamed and updated existing tests for clarity and accuracy.

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coderabbitai bot commented Sep 29, 2024

Walkthrough

The pull request introduces several updates to the Cuemon.Extensions.Globalization namespace documentation, clarifies the relationship with System.Globalization, and modifies the UseNationalLanguageSupport method to better handle CultureInfo objects. It also reduces project dependencies by removing references to Cuemon.Core and Cuemon.Extensions.IO. Additionally, new tests are added to enhance coverage of formatting differences across platforms, specifically for the Danish culture.

Changes

File Path Change Summary
.docfx/api/namespaces/Cuemon.Extensions.Globalization.md Updated documentation to clarify the namespace's relationship with System.Globalization, removed references to Cuemon.Globalization, and modified C# example formatting.
.nuget/Cuemon.Extensions.Globalization/README.md Clarified the purpose of the namespace, emphasized NLS over ICU, and added a C# example showcasing date formatting differences for the Danish culture.
src/Cuemon.Extensions.Globalization/Cuemon.Extensions.Globalization.csproj Removed ProjectReference entries for Cuemon.Core and Cuemon.Extensions.IO, reducing project dependencies.
src/Cuemon.Extensions.Globalization/CultureInfoExtensions.cs Modified UseNationalLanguageSupport method to handle read-only CultureInfo objects correctly, ensuring immutability is preserved.
test/Cuemon.Extensions.Globalization.Tests/CultureInfoExtensionsTest.cs Added a new test method for national language support formatting differences and renamed an existing test method for clarity and updated its implementation.

Possibly related PRs

  • V9.0.0/move replace-line-endings to xunit #89: The removal of the ReplaceLineEndings extension methods in the StringExtensions class may relate to changes in handling string manipulations, although it does not directly connect to the CultureInfo handling in the main PR.

🐰 In the meadow where rabbits play,
New changes hop in bright array.
With cultures rich, and formats clear,
Our code now sings, let’s give a cheer!
Dependencies trimmed, tests in line,
For NLS support, our code will shine! 🌼


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@gimlichael gimlichael self-assigned this Sep 29, 2024
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Actionable comments posted: 4

🧹 Outside diff range and nitpick comments (5)
.docfx/api/namespaces/Cuemon.Extensions.Globalization.md (2)

9-9: Improved complementary namespace reference

The updated reference to the System.Globalization namespace with a link to its official documentation is more appropriate and helpful. This change aligns well with the namespace's purpose as described in the updated summary.

Consider removing the 🔗 emoji at the end of the line, as it's redundant with the markdown link syntax and may not render consistently across all platforms.


18-25: Improved code example with better clarity

The updated code example is more precise and informative:

  1. The addition of the false parameter in CultureInfo constructor calls is crucial, as it affects the behavior of the created objects.
  2. The formatting improvements enhance readability.
  3. The added comments help explain the differences in output between the two culture objects.

These changes significantly improve the example's educational value.

Consider adding a brief explanation of what the false parameter does in the CultureInfo constructor, as this might not be immediately obvious to all readers. For example:

// The 'false' parameter indicates that we don't want to use the user override settings
var danishCultureIcu = new CultureInfo("da-dk", false);
var danishCultureNls = new CultureInfo("da-dk", false).UseNationalLanguageSupport();

// danishCultureIcu outputs dd.MM.yyyy from danishCultureIcu.DateTimeFormat.ShortDatePattern
// danishCultureNls outputs dd-MM-yyyy from danishCultureNls.DateTimeFormat.ShortDatePattern
test/Cuemon.Extensions.Globalization.Tests/CultureInfoExtensionsTest.cs (2)

15-32: LGTM: Well-structured test for cross-platform behavior.

This new test method effectively checks the behavior of UseNationalLanguageSupport() across different platforms. The use of RuntimeInformation.IsOSPlatform() allows for platform-specific testing, which is crucial for globalization features. The assertions for both DateTimeFormat and NumberFormat provide comprehensive coverage.

The conditional compilation for different .NET versions is a good practice to ensure appropriate assertions across frameworks.

Consider adding a comment explaining the expected behavior difference between Linux (ICU) and Windows for better clarity:

// On Linux, ICU is used which may have different default formatting compared to Windows
var sut2 = (RuntimeInformation.IsOSPlatform(OSPlatform.Linux)
    ? new CultureInfo("da-DK") // Linux uses ICU
    : new CultureInfo("da-DK", false) // Ensure we do not read from user culture settings on Windows
).UseNationalLanguageSupport();

Line range hint 35-48: LGTM: Improved test for read-only CultureInfo objects.

The updated test method name clearly reflects its purpose of testing UseNationalLanguageSupport() with read-only CultureInfo objects. The use of CultureInfo.GetCultureInfo() is more appropriate for this scenario than the previous World.GetCultures() approach.

The test structure maintains consistency with the previous method, which is good for readability and maintainability.

For consistency with the previous test method, consider adding a comment explaining the use of read-only CultureInfo objects:

// Test UseNationalLanguageSupport() with read-only CultureInfo objects
var sut1 = CultureInfo.GetCultureInfo("da-DK");
var sut2 = CultureInfo.GetCultureInfo("da-DK").UseNationalLanguageSupport();
.nuget/Cuemon.Extensions.Globalization/README.md (1)

20-26: Excellent example demonstrating ICU vs NLS formatting!

The C# example effectively illustrates the difference between ICU and NLS date formatting for the Danish culture. It clearly shows how the UseNationalLanguageSupport() method affects the output.

To further enhance clarity, consider adding actual output values in the comments. For example:

- // danishCultureIcu outputs dd.MM.yyyy from danishCultureIcu.DateTimeFormat.ShortDatePattern
- // danishCultureNls outputs dd-MM-yyyy from danishCultureNls.DateTimeFormat.ShortDatePattern
+ // danishCultureIcu.DateTimeFormat.ShortDatePattern outputs "dd.MM.yyyy" (e.g., "15.04.2023")
+ // danishCultureNls.DateTimeFormat.ShortDatePattern outputs "dd-MM-yyyy" (e.g., "15-04-2023")

This change would provide concrete examples of the formatting differences, making it even easier for users to understand the impact of using NLS.

📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

📥 Commits

Files that changed from the base of the PR and between d5f284b and aafeee2.

📒 Files selected for processing (5)
  • .docfx/api/namespaces/Cuemon.Extensions.Globalization.md (2 hunks)
  • .nuget/Cuemon.Extensions.Globalization/README.md (1 hunks)
  • src/Cuemon.Extensions.Globalization/Cuemon.Extensions.Globalization.csproj (0 hunks)
  • src/Cuemon.Extensions.Globalization/CultureInfoExtensions.cs (1 hunks)
  • test/Cuemon.Extensions.Globalization.Tests/CultureInfoExtensionsTest.cs (1 hunks)
💤 Files with no reviewable changes (1)
  • src/Cuemon.Extensions.Globalization/Cuemon.Extensions.Globalization.csproj
🔇 Additional comments (6)
.docfx/api/namespaces/Cuemon.Extensions.Globalization.md (1)

5-5: Improved namespace description

The updated description provides a clearer and more accurate representation of the namespace's purpose. It effectively communicates that the namespace extends the functionality of System.Globalization.

test/Cuemon.Extensions.Globalization.Tests/CultureInfoExtensionsTest.cs (2)

2-2: LGTM: Necessary additions for test setup.

The added using statement for System.Runtime.InteropServices is required for the RuntimeInformation class used in the test method. The constructor follows the standard pattern for xUnit test classes, allowing proper setup with ITestOutputHelper. These changes enhance the test class structure and enable platform-specific testing.

Also applies to: 11-13


Line range hint 1-49: Summary: Comprehensive test improvements for CultureInfoExtensions.

The changes in this file significantly enhance the test coverage for the UseNationalLanguageSupport() method. The new and updated test methods address both platform-specific behavior and the handling of read-only CultureInfo objects. The tests are well-structured, use appropriate assertions, and account for different .NET versions through conditional compilation.

These improvements contribute to a more robust testing suite for the globalization features of the Cuemon library, aligning well with the PR objectives of enhancing documentation and code related to globalization extensions.

.nuget/Cuemon.Extensions.Globalization/README.md (2)

10-12: Excellent addition to the documentation!

The new description clearly explains the purpose of the Cuemon.Extensions.Globalization namespace and its relationship to System.Globalization. The emphasis on favoring National Language Support (NLS) over International Components for Unicode (ICU) is a crucial piece of information for users of this library.


18-19: Great addition of an example section!

Including a C# example is an excellent way to demonstrate the library's usage. This will help users understand how to implement the extensions in their code.

src/Cuemon.Extensions.Globalization/CultureInfoExtensions.cs (1)

69-81: Verify Cloning Behavior of CultureInfo

Ensure that cloning a CultureInfo object results in a writable instance even if the original is read-only. Although the documentation indicates this behavior, it's good practice to confirm it to prevent unexpected issues.

Run the following script to verify that the cloned CultureInfo is writable:

Expected output:

Original IsReadOnly: True
Cloned IsReadOnly: False

Comment on lines +62 to +68
var surrogateCulture = YamlFormatter.DeserializeObject<CultureInfoSurrogate>(ms, o =>
{
o.Settings.NamingConvention = NullNamingConvention.Instance;
o.Settings.ReflectionRules = new MemberReflection();
o.Settings.IndentSequences = false;
});
Enrich(culture, suggogateCulture);
EnrichedCultureInfos.Add(culture);
enrichedCultures.Add(culture);

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⚠️ Potential issue

Dispose MemoryStream to Prevent Memory Leaks

The MemoryStream instance ms is not being disposed, which can lead to memory leaks. Consider wrapping it in a using statement to ensure it is properly disposed after use.

Apply this diff to address the issue:

-var ms = new MemoryStream(surrogate.Value.DecompressGZip().ToByteArray());
+using (var ms = new MemoryStream(surrogate.Value.DecompressGZip().ToByteArray()))
+{
     var surrogateCulture = YamlFormatter.DeserializeObject<CultureInfoSurrogate>(ms, o =>
     {
         o.Settings.NamingConvention = NullNamingConvention.Instance;
         o.Settings.ReflectionRules = new MemberReflection();
         o.Settings.IndentSequences = false;
     });
+}

Committable suggestion was skipped due to low confidence.

Comment on lines +69 to +81
if (culture.IsReadOnly)
{
var cultureClone = culture.Clone() as CultureInfo;
Enrich(cultureClone, surrogateCulture);
EnrichedCultureInfos.Add(cultureClone);
enrichedCultures.Add(cultureClone);
}
else
{
Enrich(culture, surrogateCulture);
EnrichedCultureInfos.Add(culture);
enrichedCultures.Add(culture);
}
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⚠️ Potential issue

Prevent Duplicate Entries in EnrichedCultureInfos

There's a potential for duplicate entries in EnrichedCultureInfos if the same culture is processed multiple times. This can lead to unnecessary memory consumption and redundant data.

Modify the code to check for existing entries before adding:

 if (culture.IsReadOnly)
 {
     var cultureClone = culture.Clone() as CultureInfo;
     Enrich(cultureClone, surrogateCulture);
-    EnrichedCultureInfos.Add(cultureClone);
+    if (!EnrichedCultureInfos.Any(ci => ci.Name.Equals(cultureClone.Name, StringComparison.Ordinal)))
+    {
+        EnrichedCultureInfos.Add(cultureClone);
+    }
     enrichedCultures.Add(cultureClone);
 }
 else
 {
     Enrich(culture, surrogateCulture);
-    EnrichedCultureInfos.Add(culture);
+    if (!EnrichedCultureInfos.Any(ci => ci.Name.Equals(culture.Name, StringComparison.Ordinal)))
+    {
+        EnrichedCultureInfos.Add(culture);
+    }
     enrichedCultures.Add(culture);
 }
📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
if (culture.IsReadOnly)
{
var cultureClone = culture.Clone() as CultureInfo;
Enrich(cultureClone, surrogateCulture);
EnrichedCultureInfos.Add(cultureClone);
enrichedCultures.Add(cultureClone);
}
else
{
Enrich(culture, surrogateCulture);
EnrichedCultureInfos.Add(culture);
enrichedCultures.Add(culture);
}
if (culture.IsReadOnly)
{
var cultureClone = culture.Clone() as CultureInfo;
Enrich(cultureClone, surrogateCulture);
if (!EnrichedCultureInfos.Any(ci => ci.Name.Equals(cultureClone.Name, StringComparison.Ordinal)))
{
EnrichedCultureInfos.Add(cultureClone);
}
enrichedCultures.Add(cultureClone);
}
else
{
Enrich(culture, surrogateCulture);
if (!EnrichedCultureInfos.Any(ci => ci.Name.Equals(culture.Name, StringComparison.Ordinal)))
{
EnrichedCultureInfos.Add(culture);
}
enrichedCultures.Add(culture);
}

🛠️ Refactor suggestion

Optional: Preserve Read-Only State After Enrichment

If it's important to maintain the read-only state of the original CultureInfo, consider making the enriched clone read-only after enrichment. This can be achieved using the CultureInfo.ReadOnly method.

Apply this change to preserve the read-only state:

 var cultureClone = culture.Clone() as CultureInfo;
 Enrich(cultureClone, surrogateCulture);
+var readOnlyCultureClone = CultureInfo.ReadOnly(cultureClone);
-EnrichedCultureInfos.Add(cultureClone);
+EnrichedCultureInfos.Add(readOnlyCultureClone);
-enrichedCultures.Add(cultureClone);
+enrichedCultures.Add(readOnlyCultureClone);
📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
if (culture.IsReadOnly)
{
var cultureClone = culture.Clone() as CultureInfo;
Enrich(cultureClone, surrogateCulture);
EnrichedCultureInfos.Add(cultureClone);
enrichedCultures.Add(cultureClone);
}
else
{
Enrich(culture, surrogateCulture);
EnrichedCultureInfos.Add(culture);
enrichedCultures.Add(culture);
}
if (culture.IsReadOnly)
{
var cultureClone = culture.Clone() as CultureInfo;
Enrich(cultureClone, surrogateCulture);
var readOnlyCultureClone = CultureInfo.ReadOnly(cultureClone);
EnrichedCultureInfos.Add(readOnlyCultureClone);
enrichedCultures.Add(readOnlyCultureClone);
}
else
{
Enrich(culture, surrogateCulture);
EnrichedCultureInfos.Add(culture);
enrichedCultures.Add(culture);
}

⚠️ Potential issue

Ensure Thread Safety When Modifying Shared Collections

The static list EnrichedCultureInfos is being modified without synchronization, which may cause race conditions in multi-threaded environments. To prevent potential concurrency issues, consider using thread-safe collections or implementing locking mechanisms.

One way to address this is by replacing EnrichedCultureInfos with a thread-safe collection like ConcurrentBag<CultureInfo>:

-private static readonly List<CultureInfo> EnrichedCultureInfos = new();
+private static readonly ConcurrentBag<CultureInfo> EnrichedCultureInfos = new();

...

                 if (enrichedCulture != null)
                 {
                     enrichedCultures.Add(enrichedCulture);
                 }
                 else
                 {
                     // Existing code
-                    EnrichedCultureInfos.Add(cultureClone);
+                    EnrichedCultureInfos.Add(cultureClone);
                     enrichedCultures.Add(cultureClone);
                 }

Alternatively, implement a locking mechanism:

+private static readonly object EnrichedCultureInfosLock = new();

...

                 if (enrichedCulture != null)
                 {
                     enrichedCultures.Add(enrichedCulture);
                 }
                 else
                 {
+                    lock (EnrichedCultureInfosLock)
+                    {
                         // Existing code
                         EnrichedCultureInfos.Add(cultureClone);
+                    }
                     enrichedCultures.Add(cultureClone);
                 }

Committable suggestion was skipped due to low confidence.

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codecov bot commented Sep 29, 2024

Codecov Report

Attention: Patch coverage is 61.53846% with 5 lines in your changes missing coverage. Please review.

Project coverage is 80.15%. Comparing base (d5f284b) to head (aafeee2).
Report is 1 commits behind head on main.

Files with missing lines Patch % Lines
....Extensions.Globalization/CultureInfoExtensions.cs 61.53% 5 Missing ⚠️
Additional details and impacted files
@@            Coverage Diff             @@
##             main      #90      +/-   ##
==========================================
- Coverage   80.15%   80.15%   -0.01%     
==========================================
  Files         617      617              
  Lines       18940    18949       +9     
  Branches     1907     1908       +1     
==========================================
+ Hits        15181    15188       +7     
- Misses       3709     3711       +2     
  Partials       50       50              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

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@gimlichael gimlichael merged commit bd3caa3 into main Sep 29, 2024
@gimlichael gimlichael deleted the v9.0.0/housekeeping-for-extensions-globalization branch September 29, 2024 13:47
This was referenced Oct 4, 2024
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2 participants