55 lines
1.3 KiB
Go
55 lines
1.3 KiB
Go
package platform
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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 TestWriteUserFileCreatesParent(t *testing.T) {
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dir := t.TempDir()
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dest := filepath.Join(dir, "a", "b", "c.txt")
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if err := WriteUserFile(dest, []byte("hi"), 0o644); err != nil {
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t.Fatal(err)
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}
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got, _ := os.ReadFile(dest)
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if string(got) != "hi" {
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t.Fatalf("content %q", got)
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}
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info, _ := os.Stat(dest)
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if info.Mode().Perm() != 0o644 {
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t.Fatalf("mode %v", info.Mode().Perm())
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}
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}
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func TestWriteUserFileOverwritesAtomically(t *testing.T) {
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dir := t.TempDir()
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dest := filepath.Join(dir, "x")
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if err := WriteUserFile(dest, []byte("one"), 0o644); err != nil {
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t.Fatal(err)
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}
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if err := WriteUserFile(dest, []byte("two"), 0o644); err != nil {
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t.Fatal(err)
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}
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got, _ := os.ReadFile(dest)
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if string(got) != "two" {
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t.Fatalf("got %q want two", got)
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}
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// No .tmp sibling should be left behind.
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if _, err := os.Stat(dest + ".tmp"); !os.IsNotExist(err) {
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t.Fatalf(".tmp left behind: %v", err)
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}
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}
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func TestWriteUserFileExecMode(t *testing.T) {
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dir := t.TempDir()
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dest := filepath.Join(dir, "bin")
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if err := WriteUserFile(dest, []byte("#!/bin/sh\n"), 0o755); err != nil {
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t.Fatal(err)
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}
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info, _ := os.Stat(dest)
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if info.Mode().Perm() != 0o755 {
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t.Fatalf("mode %v want 0755", info.Mode().Perm())
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}
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}
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