Two issues in the fonts service test suite added by #390 — the behaviour
assertions all passed, but 5 of 24 tests had assertions that silently
no-op'd, so any regression in those code paths would not have been
caught.
## Issue 1: jest.resetModules() bypassed the logger mock
`beforeEach` called `jest.resetModules()` then re-required `fontsService`.
After resetModules, the `jest.mock('../../src/utils/logger', ...)` factory
at the top of the file no longer applied to subsequent requires — so the
freshly-required `fontsService` captured the REAL logger while the test
file's `logger` variable still pointed at the mocked one. The 4
"warning logged" / "info logged" assertions resolved as 0 calls and
silently passed-as-noop.
The resetModules call wasn't necessary in the first place — module-level
state in fontsService is just the cache, which clearFontsCache() already
resets. And both getBundledFontsRoot() and getUserFontsRoot() read
process.env at call-time, not at module load, so the env vars set in
beforeEach are picked up without needing a fresh require.
Fix: require fontsService once at module top (inside the jest.mock
hoisting scope) and drop resetModules + the per-test re-require.
## Issue 2: case-insensitive filesystem (macOS / Windows)
The "case-insensitive duplicate within the same root" test created
`Inter/` and `INTER/` to trigger the dedup warning. On a case-sensitive
FS (Linux ext4) both directory entries exist and the dedup branch fires;
on macOS APFS or Windows NTFS the second mkdir resolves to the same
folder as the first, so only one ever exists and the dedup is
unreachable from this test setup. Test failed on macOS dev, passed on
Linux CI.
Fix: probe at load time by creating a lowercase file and checking if
its uppercase variant resolves to the same inode, then conditionally
test.skip the affected test on case-insensitive hosts. Comment in the
test body explains why.
## Result
23 of 24 tests now pass on macOS; the case-sensitive-only test runs on
Linux CI. All previously-no-op'd assertions now exercise their code
paths.
Paul Nothaft