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Fix culture-dependent timestamp in HTML test report (#5868) #5872

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Merged
thomhurst merged 2 commits into from
May 10, 2026
Merged

Fix culture-dependent timestamp in HTML test report (#5868) #5872

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5d699b6
Fix culture-dependent timestamp in HTML test report (#5868)
thomhurst May 10, 2026
8cb0658
Use invariant culture for HTML report timestamp
thomhurst May 10, 2026
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12 changes: 11 additions & 1 deletion TUnit.Engine/Reporters/Html/HtmlReporter.cs
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Original file line number Diff line number Diff line change
@@ -1,4 +1,5 @@
using System.Collections.Concurrent;
using System.Globalization;
using System.Net;
using System.Reflection;
using System.Runtime.InteropServices;
Expand Down Expand Up @@ -364,7 +365,7 @@ private ReportData BuildReportData()
{
AssemblyName = assemblyName,
MachineName = Environment.MachineName,
Timestamp = DateTimeOffset.UtcNow.ToString("dd MMM yyyy, HH:mm:ss 'UTC'"),
Timestamp = FormatTimestamp(DateTimeOffset.UtcNow),
TUnitVersion = tunitVersion,
OperatingSystem = RuntimeInformation.OSDescription,
RuntimeVersion = RuntimeInformation.FrameworkDescription,
Expand Down Expand Up @@ -414,6 +415,15 @@ private static (string? CommitSha, string? Branch, string? PullRequestNumber, st
return (commitSha, branch, prNumber, repoSlug);
}

private static string FormatTimestamp(DateTimeOffset value)
{
// Both 'R' and 'u' are culture-invariant by spec; branching is purely for English-reader aesthetics.
var utc = value.ToUniversalTime();
return CultureInfo.CurrentUICulture.TwoLetterISOLanguageName == "en"
? utc.ToString("R")
: utc.ToString("u");
}

private static void AccumulateStatus(ReportSummary summary, ReportTestResult testResult)
{
summary.Total++;
Expand Down
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