//nolint:testpackage // exercises the unexported cleanupBlobTempFile
package snapshot

import (
	"errors"
	"os"
	"testing"

	"github.com/spf13/afero"
	"sneak.berlin/go/vaultik/internal/blob"
)

// A blob temp file that cannot be closed or removed must make the cleanup
// return an error, not end the process.
func TestCleanupBlobTempFileReturnsErrors(t *testing.T) {
	t.Parallel()

	fs := afero.NewOsFs()
	s := &Scanner{fs: fs}

	tests := []struct {
		name string
		// prepare runs before the cleanup and makes its close or remove
		// fail.
		prepare func(tempFile afero.File) error
		want    error
	}{
		{
			name:    "close fails",
			prepare: func(tempFile afero.File) error { return tempFile.Close() },
			want:    os.ErrClosed,
		},
		{
			name: "remove fails",
			prepare: func(tempFile afero.File) error {
				return fs.Remove(tempFile.Name())
			},
			want: os.ErrNotExist,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			t.Parallel()

			tempFile, err := afero.TempFile(fs, t.TempDir(), "blob-*.tmp")
			if err != nil {
				t.Fatal(err)
			}

			err = tt.prepare(tempFile)
			if err != nil {
				t.Fatal(err)
			}

			err = s.cleanupBlobTempFile(&blob.WithReader{TempFile: tempFile})
			if !errors.Is(err, tt.want) {
				t.Fatalf("expected an error wrapping %v, got: %v", tt.want, err)
			}
		})
	}
}