.github/workflows: wasm test fails with "unexpected call to os.Exit(0) during test"

[hajimehoshi]

Ebitengine Version

71370a01bd5f87b2f753829afcc3dc7b94b06c59

Operating System

• [ ] Windows
• [ ] macOS
• [ ] Linux
• [ ] FreeBSD
• [ ] OpenBSD
• [ ] Android
• [ ] iOS
• [ ] Nintendo Switch
• [ ] PlayStation 5
• [ ] Xbox
• [X] Web Browsers

Go Version (go version)

go1.20 (and so on)

What steps will reproduce the problem?

Run "go test" for browsers on GitHub Actions

What is the expected result?

The test passes

What happens instead?

The test fails

https://github.com/hajimehoshi/ebiten/actions/runs/10651026325/job/29523110919

panic: unexpected call to os.Exit(0) during test

goroutine 1 [running]:
os.Exit(0x0)
    /opt/hostedtoolcache/go/1.20.14/x64/src/os/proc.go:67 +0x8
main.main()
    _testmain.go:382 +0x55
http://127.0.0.1:46659/wasm_exec.js:353:23 Uncaught
TypeError: Cannot read properties of undefined (reading 'exports')
    at syscall/js.valueCall (http://127.0.0.1:46659/wasm_exec.js:354:24)
    at http://127.0.0.1:46659/ebiten.wasm:wasm-function[1465]:0x121713
    at http://127.0.0.1:46659/ebiten.wasm:wasm-function[1442]:0x11eb3f
    at http://127.0.0.1:46659/ebiten.wasm:wasm-function[1610]:0x130cc0
    at http://127.0.0.1:46659/ebiten.wasm:wasm-function[1606]:0x12f808
    at http://127.0.0.1:46659/ebiten.wasm:wasm-function[1992]:0x17b444
    at http://127.0.0.1:46659/ebiten.wasm:wasm-function[2080]:0x18a753
    at http://127.0.0.1:46659/ebiten.wasm:wasm-function[2672]:0x228baf
    at http://127.0.0.1:46659/ebiten.wasm:wasm-function[3082]:0x29567c
    at http://127.0.0.1:46659/ebiten.wasm:wasm-function[3089]:0x298969
exit with status 2
FAIL    github.com/hajimehoshi/ebiten/v2    25.578s

Anything else you feel useful to add?

No response

[hajimehoshi]

The mysterious thing is that -test.paniconexit0 should be false by default. So, does a third party library change this flag value?