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Makes fake clocks increment and fixes mutability bug (#630)

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This ensures fake clocks increment so that compilers that implement
sleep with them don't spin.

This also fixes a mutability bug in config where we weren't really doing
clone properly because map references are shared.

Signed-off-by: Adrian Cole <adrian@tetrate.io>
This commit is contained in:
Crypt Keeper
2022-06-17 11:31:48 +08:00
committed by GitHub
parent 338652a182
commit d6330d9cfa
10 changed files with 360 additions and 228 deletions
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17
internal/sys/fs_test.go
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@@ -57,3 +57,20 @@ func (f *testFile) Close() error { return f.closeErr }
func (f *testFile) Stat() (fs.FileInfo, error) { return nil, nil }
func (f *testFile) Read(_ []byte) (int, error) { return 0, nil }
func (f *testFile) Seek(_ int64, _ int) (int64, error) { return 0, nil }
func TestFSConfig_Clone(t *testing.T) {
fsc := NewFSConfig()
cloned := fsc.Clone()
fsc.preopens[2] = nil
fsc.preopenPaths["2"] = 2
cloned.preopens[1] = nil
cloned.preopenPaths["1"] = 1
// Ensure the maps are not shared
require.Equal(t, map[uint32]*FileEntry{2: nil}, fsc.preopens)
require.Equal(t, map[string]uint32{"2": 2}, fsc.preopenPaths)
require.Equal(t, map[uint32]*FileEntry{1: nil}, cloned.preopens)
require.Equal(t, map[string]uint32{"1": 1}, cloned.preopenPaths)
}