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49 lines
1.4 KiB
Go
49 lines
1.4 KiB
Go
//go:build linux
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package server
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import (
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"sort"
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"testing"
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"unsafe"
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"github.com/stretchr/testify/assert"
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)
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// The kernel rejects a write whose length is not exactly sizeof(struct
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// input_event), so the mirror has to track the platform's timeval: 24 bytes
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// where a C long is 8, 16 where it is 4.
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func TestInputEventMatchesKernelABI(t *testing.T) {
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const longSize = unsafe.Sizeof(uintptr(0))
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want := uintptr(2)*longSize + 2 + 2 + 4
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// The struct is aligned to its widest field, which is the long.
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if pad := want % longSize; pad != 0 {
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want += longSize - pad
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}
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if got := unsafe.Sizeof(inputEvent{}); got != want {
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t.Fatalf("sizeof(inputEvent) = %d, want %d for a %d-byte long", got, want, longSize)
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}
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}
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// uinput only delivers key events whose code was advertised with UI_SET_KEYBIT
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// at device-creation time. Anything qemuToLinuxKey can produce therefore has to
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// appear in buildUInputKeymap, or the kernel silently drops those keys.
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func TestUInputKeymapAdvertisesEveryMappedScancode(t *testing.T) {
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advertised := make(map[uint16]struct{})
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for _, code := range buildUInputKeymap() {
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advertised[code] = struct{}{}
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}
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var missing []int
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for _, code := range qemuToLinuxKey {
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if code == 0 {
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continue
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}
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if _, ok := advertised[uint16(code)]; !ok {
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missing = append(missing, code)
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}
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}
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sort.Ints(missing)
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assert.Empty(t, missing, "KEY_ codes reachable through qemuToLinuxKey but never advertised to uinput")
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}
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