50 lines
1.3 KiB
Go
50 lines
1.3 KiB
Go
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package mount
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import (
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"os"
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"path/filepath"
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"testing"
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)
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func TestSetupAndTeardownWithFakeCommands(t *testing.T) {
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dir := t.TempDir()
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scripts := filepath.Join(dir, "bin")
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if err := os.MkdirAll(scripts, 0o755); err != nil {
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t.Fatal(err)
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}
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write := func(name, body string) {
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path := filepath.Join(scripts, name)
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if err := os.WriteFile(path, []byte("#!/usr/bin/env bash\nset -eu\n"+body+"\n"), 0o755); err != nil {
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t.Fatalf("write %s: %v", name, err)
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}
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}
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write("losetup", `printf '/dev/loop9\n'`)
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write("mount", `exit 0`)
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write("umount", `exit 0`)
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t.Setenv("PATH", scripts+string(os.PathListSeparator)+os.Getenv("PATH"))
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image := filepath.Join(dir, "image.img")
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if err := os.WriteFile(image, make([]byte, 1024), 0o644); err != nil {
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t.Fatal(err)
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}
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if err := os.WriteFile(image+"p1", []byte(""), 0o644); err != nil {
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t.Fatal(err)
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}
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if got := partitionPath(image, 1); got != image+"p1" {
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t.Fatalf("partitionPath existing = %q", got)
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}
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m, err := Setup(image)
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if err != nil {
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t.Fatalf("Setup: %v", err)
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}
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if m.LoopDevice != "/dev/loop9" || m.BootPath == "" || m.RootPath == "" {
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t.Fatalf("unexpected mount: %#v", m)
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}
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if err := Teardown(m); err != nil {
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t.Fatalf("Teardown: %v", err)
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}
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if got := partitionPath("/dev/loop9", 2); got != "/dev/loop92" && got != "/dev/loop9p2" {
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t.Fatalf("partitionPath /dev = %q", got)
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}
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}
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