Go WebAssembly(wasm) testing fails - fatal error: unexpected signal during runtime execution

[mihai barbulescu]

I'm building a client-side webapp and part of this I would like to run tests. It seems testing fails . Is it a known issue ?

Mihai

server thetv$ GOOS=js GOARCH=wasm go test

--- FAIL: TestServer (3.00s)
fatal error: unexpected signal during runtime execution

runtime stack:
runtime: unexpected return pc for syscall.fsCall called from 0x15d70a5c1ade6900
stack: frame={sp:0xb23170, fp:0xb23208} stack=[0xb21698,0xb23298)
0000000000b23070:  0000000000143b44  000000000000002a
0000000000b23080:  0000000000b00de0  0000000010e20003 <runtime.typedmemmove+3>
0000000000b23090:  0000000000000001  00000000000b52bf
0000000000b230a0:  000000005bab0011 <thep/server.TestServer+17>  0000000000c3e368
0000000000b230b0:  0000000000c3e3b8  00000000105e001a <runtime.chanrecv+26>
0000000000b230c0:  0000000000000000  0000000000b231e8
0000000000b230d0:  0000000000000005  0000000000000000
0000000000b230e0:  00000000109e0010 <runtime.beforeIdle+16>  0000000000000000
0000000000b230f0:  0000000000000003  0000000000000005
0000000000b23100:  0000008affbb0c00  0000000000000001
0000000000b23110:  15d709d100000001  15d70a5c1ade6900
0000000000b23120:  0000000000c32300  0000000000c30058
0000000000b23130:  0000000000000000  00000000008e6901
0000000000b23140:  00000000105d0002 <runtime.chanrecv1+2>  0000000000c30000
0000000000b23150:  0000000000b231e8  0000000000000001
0000000000b23160:  0000000000b06600  000000001512000d <syscall.fsCall+13>
0000000000b23170: <0000000000c30000  0000000000b231e8
0000000000b23180:  0000000012250010 <runtime.casgstatus+16>  0000000100000001
0000000000b23190:  0000000100000000  0000000000c3e3b8
0000000000b231a0:  0000000000000000  0000000000c305d8
0000000000b231b0:  15d709d100000005  0000000000c30000
0000000000b231c0:  0000000500000004  0000000000b00de0
0000000000b231d0:  15d709d11b235d00  0000000000c30000
0000000000b231e0:  000000001248005e <runtime.schedule+94>  0000000000000000
0000000000b231f0:  0000000000000000  0000000000000000
0000000000b23200: !15d70a5c1ade6900 >0000000010a00000 <runtime.handleAsyncEvent+0>
0000000000b23210:  0000000000ac0820  0000000013500004 <runtime.isSystemGoroutine+4>
0000000000b23220:  0000000010a00000 <runtime.handleAsyncEvent+0>  0000000000b00de0
0000000000b23230:  0000000000c00c90  0000000000000006
0000000000b23240:  000000001251002b <runtime.goexit0+43>  0000000000c30000
0000000000b23250:  0000000000c00c00  0000000000c00900
0000000000b23260:  0000000400000002  0000000000000000
0000000000b23270:  0000000000b00de0  0000000013b40001 <runtime.mcall+1>
0000000000b23280:  0000000000c00c00  0000000000b232c0
0000000000b23290:  0100000000000000
syscall.fsCall(0x10a00000, 0xac0820, 0x13500004, 0x10a00000, 0xb00de0, 0xc00c90, 0x6, 0x1251002b)
        /Users/thetv/goroot/src/syscall/fs_js.go:513 +0xd

goroutine 1 [chan receive]:
testing.(*T).Run(0xca4100, 0x137b68, 0xa, 0x14f008, 0x155b0002)
        /Users/thetv/goroot/src/testing/testing.go:977 +0x31
testing.runTests.func1(0xca4000)
        /Users/thetv/goroot/src/testing/testing.go:1218 +0x5
testing.tRunner(0xca4000, 0xc56e28)
        /Users/thetv/goroot/src/testing/testing.go:925 +0xc
testing.runTests(0xc0a240, 0xaee440, 0x1, 0x1, 0x0)
        /Users/thetv/goroot/src/testing/testing.go:1216 +0x28
testing.(*M).Run(0xca2000, 0x0)
        /Users/thetv/goroot/src/testing/testing.go:1133 +0x1b
main.main()
        _testmain.go:44 +0xd

goroutine 6 [waiting]:
syscall/js.Value.Call(0x7ff800000000000a, 0x13655c, 0x5, 0xc76aa0, 0x6, 0xa, 0x5)
        /Users/thetv/goroot/src/syscall/js/js.go:326 +0x3
syscall.fsCall(0x13655c, 0x5, 0xc58bf8, 0x5, 0x5, 0x401, 0x1378ac0, 0x300000000)
        /Users/thetv/goroot/src/syscall/fs_js.go:496 +0xc
syscall.Write(0x1, 0xc74400, 0x1d, 0x400, 0x1d, 0xb2ee68, 0xcac500)
        /Users/thetv/goroot/src/syscall/fs_js.go:417 +0x11
internal/poll.(*FD).Write(0xc3e120, 0xc74400, 0x1d, 0x400, 0x0, 0x0, 0x0)
        /Users/thetv/goroot/src/internal/poll/fd_unix.go:268 +0x22
os.(*File).write(...)
        /Users/thetv/goroot/src/os/file_unix.go:280
os.(*File).Write(0xc0c020, 0xc74400, 0x1d, 0x400, 0x3, 0x3, 0xc2ce01)
        /Users/thetv/goroot/src/os/file.go:153 +0xf
fmt.Fprintf(0x1949c0, 0xc0c020, 0x139be8, 0x10, 0xc58e78, 0x3, 0x3, 0xb232c8, 0x0, 0x19340006)
        /Users/thetv/goroot/src/fmt/print.go:205 +0x8
testing.(*common).flushToParent(0xca4100, 0x139be8, 0x10, 0xc58e78, 0x3, 0x3)
        /Users/thetv/goroot/src/testing/testing.go:508 +0x7
testing.(*T).report(0xca4100)
        /Users/thetv/goroot/src/testing/testing.go:1155 +0x18
testing.tRunner.func1(0xca4100)
        /Users/thetv/goroot/src/testing/testing.go:912 +0x41
testing.tRunner(0xca4100, 0x14f008)
        /Users/thetv/goroot/src/testing/testing.go:929 +0xd
created by testing.(*T).Run
        /Users/thetv/goroot/src/testing/testing.go:976 +0x30

goroutine 7 [chan receive]:
thep/server.Server(0x194b00, 0xc0a260)
        /Users/thetv/go/src/thep/server/webserver_js.go:50 +0x22
created by thep/server.TestServer
        /Users/thetv/go/src/thep/server/webserver_js_test.go:19 +0x3

[Agniva De Sarker]

Please provide more information so that it helps people to debug the issue. Such as:

- Are you able to provide the code which causes this crash ?

- Which Go version are you using ?

- Are you testing this in the browser or in Node ? Please give details of either.

[mihai barbulescu]

- Are you able to provide the code which causes this crash ?

 Not really...it's a big code-base... I will try to reproduce a smaller testcase and update the post.

- Which Go version are you using ?

go tip

- Are you testing this in the browser or in Node ? Please give details of either.

In the browser (sort of )

https://github.com/golang/go/wiki/WebAssembly#running-tests-in-the-browser

[Agniva De Sarker]

Please also try with 1.13.x and see if you see the issue there too. Also please try running manually in FF too.

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