test: refactor font handling in tests #63

Job	Run time
cargo test (windows-2022, stable)	7m 25s
cargo fmt (windows-2022, stable)	40s
cargo build (windows-2022, stable)	2m 32s
cargo clippy (windows-2022, stable)	4m 11s
cargo test (windows-2022, nightly)	6m 44s
cargo fmt (windows-2022, nightly)	22s
cargo build (windows-2022, nightly)	1m 53s
cargo clippy (windows-2022, nightly)	3m 36s
cargo test (macos-latest, stable)	1m 24s
cargo fmt (macos-latest, stable)	7s
cargo clippy (macos-latest, stable)	1m 19s
cargo build (macos-latest, stable)	21s
cargo test (macos-latest, nightly)	2m 35s
cargo clippy (macos-latest, nightly)	1m 13s
cargo build (macos-latest, nightly)	41s
cargo fmt (macos-latest, nightly)	13s
cargo test (ubuntu-22.04, stable)	3m 2s
cargo clippy (ubuntu-22.04, stable)	1m 9s
cargo build (ubuntu-22.04, stable)	19s
cargo fmt (ubuntu-22.04, stable)	10s
cargo test (ubuntu-22.04, nightly)	2m 43s
cargo clippy (ubuntu-22.04, nightly)	1m 14s
cargo build (ubuntu-22.04, nightly)	20s
cargo fmt (ubuntu-22.04, nightly)	14s
Upload Test Event	0s
	44m 27s

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