The CI backend test job failed on HumanLanguageCatalogTests:
nynorsk -> expected "Norwegian", actual "Norwegian Nynorsk"
This was a real bug, correctly caught by the runner -- not runner
instability. Reproduced on Ubuntu 20.04 / libicu66 (the CI runner's ICU)
with .NET 9 installed via dotnet-install.sh exactly as CI does.
Root cause: BuildLanguageLookup's explicit normalization aliases
(nynorsk/bokmål/norsk -> Norwegian) were added with map.TryAdd, which
loses to any key the culture enumeration already inserted. On libicu66
the "nn" culture's NativeName is the bare word "nynorsk", so enumeration
claimed key "nynorsk" -> "Norwegian Nynorsk" first and the explicit alias
silently lost. On libicu70+ (Debian/Ubuntu 22.04+, my earlier local
runs) the native name is "norsk nynorsk", so the key was free and the
alias won -- which is why it passed locally and only failed on the
runner's older ICU. Same host-ICU dependence class as 9681618.
Fix: add an Override helper (map[key] = value) and apply it to the
alias block so these mappings win regardless of insertion order. Also
collapse the full "Norwegian Nynorsk"/"Norwegian Bokmål" phrases to
"Norwegian" for consistency. Correct by construction for any ICU version.
Verified:
- reproduced the exact failure on libicu66 with the old code (probe)
- fix logic yields nynorsk/bokmål -> Norwegian on that same libicu66
- real net9 test DLL: 420/420 on focal libicu66 (CI mirror, dotnet
9.0.316 via dotnet-install.sh), and 420/420 on libicu72 (Debian) and
libicu74 (Ubuntu 24.04), plus locally
No test weakened, skipped, or relaxed.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
HumanLanguageCatalog built its lookup table solely from
CultureInfo.GetCultures, so which languages counted as human languages
depended on the host's ICU data rather than on the CV. Measured: 806
cultures on a normal Windows or Linux machine, exactly 1 under
globalization-invariant mode, and an English-only subset on a container
with trimmed ICU data.
Consequences by environment, all silent:
- full ICU: correct
- trimmed ICU: canonical names present in the reduced data survive and
the rest are dropped, so a CV keeps English and loses Norwegian
- invariant: every language is dropped and a CV import loses its
Languages section entirely, with no error
The tests were right and are unchanged. Seed the catalog explicitly with
the languages a CV realistically lists, before the culture enumeration,
which still runs and still adds breadth. Nothing in the seed collides
with a technical skill -- Go, Java, Swift, Rust and Basic are
deliberately absent, and Basic is also a proficiency level.
Verified 420 tests pass in four environments: Windows and Linux, each
with full ICU and with DOTNET_SYSTEM_GLOBALIZATION_INVARIANT=1. Before
this change the invariant runs failed 5 tests. No test was modified,
skipped or relaxed.
Added HumanLanguageCatalogTests to pin the seeded catalog, confirmed
non-vacuous by removing the seed and watching 15 tests fail.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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