mirror of https://github.com/octoleo/restic.git
68 lines
1.4 KiB
Go
68 lines
1.4 KiB
Go
package fs_test
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import (
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"errors"
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"flag"
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"os"
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"os/exec"
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"path/filepath"
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"testing"
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)
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var childHelpers = map[string]func(){}
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type childProcess struct {
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name string
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fn func()
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}
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var _ flag.Value = (*childProcess)(nil)
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func (c *childProcess) String() string {
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return c.name
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}
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func (c *childProcess) Set(s string) error {
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fn, ok := childHelpers[s]
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if !ok {
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return errors.New("helper not found")
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}
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c.name = s
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c.fn = fn
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return nil
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}
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var childMode childProcess
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func init() {
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flag.Var(&childMode, "fuse.internal.child", "internal use only")
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}
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// childCmd prepares a test function to be run in a subprocess, with
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// childMode set to true. Caller must still call Run or Start.
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//
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// Re-using the test executable as the subprocess is useful because
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// now test executables can e.g. be cross-compiled, transferred
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// between hosts, and run in settings where the whole Go development
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// environment is not installed.
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func childCmd(childName string) (*exec.Cmd, error) {
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// caller may set cwd, so we can't rely on relative paths
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executable, err := filepath.Abs(os.Args[0])
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if err != nil {
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return nil, err
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}
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cmd := exec.Command(executable, "-fuse.internal.child="+childName)
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cmd.Stdout = os.Stdout
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cmd.Stderr = os.Stderr
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return cmd, nil
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}
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func TestMain(m *testing.M) {
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flag.Parse()
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if childMode.fn != nil {
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childMode.fn()
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os.Exit(0)
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}
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os.Exit(m.Run())
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}
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