fs/context_test.go at main · lesiw/fs · GitHub

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//go:build unix

package fs_test

import (
	"context"
	"fmt"
	"log"
	"testing"

	"lesiw.io/fs"
	"lesiw.io/fs/osfs"
)

func TestContextModesIndependent(t *testing.T) {
	ctx := t.Context()

	// Set both modes
	ctx = fs.WithDirMode(ctx, 0700)
	ctx = fs.WithFileMode(ctx, 0600)

	// Verify both are preserved independently
	dirMode := fs.DirMode(ctx)
	fileMode := fs.FileMode(ctx)

	if dirMode != 0700 {
		t.Errorf("DirMode(ctx) = %04o, want 0700", dirMode)
	}

	if fileMode != 0600 {
		t.Errorf("FileMode(ctx) = %04o, want 0600", fileMode)
	}
}

func ExampleWithFileMode() {
	fsys, ctx := osfs.NewTemp(), context.Background()
	defer fs.Close(fsys)

	ctx = fs.WithFileMode(ctx, 0600)
	err := fs.WriteFile(ctx, fsys, "private.txt", []byte("secret"))
	if err != nil {
		log.Fatal(err)
	}
	info, err := fs.Stat(ctx, fsys, "private.txt")
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("Mode: %04o\n", info.Mode().Perm())
	// Output:
	// Mode: 0600
}

func ExampleWithDirMode() {
	fsys, ctx := osfs.NewTemp(), context.Background()
	defer fs.Close(fsys)

	ctx = fs.WithDirMode(ctx, 0700)
	err := fs.MkdirAll(ctx, fsys, "private/data")
	if err != nil {
		log.Fatal(err)
	}
	info, err := fs.Stat(ctx, fsys, "private")
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("Mode: %04o\n", info.Mode().Perm())
	// Output:
	// Mode: 0700
}

func ExampleFileMode() {
	ctx := context.Background()
	ctx = fs.WithFileMode(ctx, 0600)
	mode := fs.FileMode(ctx)
	fmt.Printf("Mode: %04o\n", mode)
	// Output:
	// Mode: 0600
}

func ExampleDirMode() {
	ctx := context.Background()
	ctx = fs.WithDirMode(ctx, 0700)
	mode := fs.DirMode(ctx)
	fmt.Printf("Mode: %04o\n", mode)
	// Output:
	// Mode: 0700
}

func TestWithoutWorkDir(t *testing.T) {
	ctx := fs.WithWorkDir(t.Context(), "/some/dir")
	ctx = fs.WithoutWorkDir(ctx)
	if got := fs.WorkDir(ctx); got != "" {
		t.Errorf("WorkDir() = %q, want %q", got, "")
	}
}

func TestWithWorkDirEmptyIsNoop(t *testing.T) {
	ctx := fs.WithWorkDir(t.Context(), "/some/dir")
	ctx = fs.WithWorkDir(ctx, "")
	if got, want := fs.WorkDir(ctx), "/some/dir"; got != want {
		t.Errorf("WorkDir() = %q, want %q", got, want)
	}
}

func TestWithWorkDirRelativeComposes(t *testing.T) {
	ctx := fs.WithWorkDir(t.Context(), "/some/dir")
	ctx = fs.WithWorkDir(ctx, "sub")
	if got, want := fs.WorkDir(ctx), "/some/dir/sub"; got != want {
		t.Errorf("WorkDir() = %q, want %q", got, want)
	}
}