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// Copyright (C) 2023 Luke Shumaker <lukeshu@lukeshu.com>
//
// SPDX-License-Identifier: GPL-2.0-or-later
package btrfstree_test
import (
"errors"
"fmt"
iofs "io/fs"
"testing"
"github.com/stretchr/testify/assert"
"git.lukeshu.com/btrfs-progs-ng/lib/btrfs/btrfstree"
)
func TestErrs(t *testing.T) {
t.Parallel()
errItem := fmt.Errorf("my item: %w", btrfstree.ErrNoItem)
errTree := fmt.Errorf("my tree: %w", btrfstree.ErrNoTree)
// 1. errItem
// 2. errTree
// 3. btrfstree.ErrNoItem
// 4. btrfstree.ErrNoTree
// 5. iofs.ErrNotExist
// 1
assert.Equal(t, errors.Is(errItem, errItem), true)
assert.Equal(t, errors.Is(errItem, errTree), false)
assert.Equal(t, errors.Is(errItem, btrfstree.ErrNoItem), true)
assert.Equal(t, errors.Is(errItem, btrfstree.ErrNoTree), false)
assert.Equal(t, errors.Is(errItem, iofs.ErrNotExist), true)
// 2
assert.Equal(t, errors.Is(errTree, errItem), false)
assert.Equal(t, errors.Is(errTree, errTree), true)
assert.Equal(t, errors.Is(errTree, btrfstree.ErrNoItem), false)
assert.Equal(t, errors.Is(errTree, btrfstree.ErrNoTree), true)
assert.Equal(t, errors.Is(errTree, iofs.ErrNotExist), true)
// 3
assert.Equal(t, errors.Is(btrfstree.ErrNoItem, errItem), false)
assert.Equal(t, errors.Is(btrfstree.ErrNoItem, errTree), false)
assert.Equal(t, errors.Is(btrfstree.ErrNoItem, btrfstree.ErrNoItem), true)
assert.Equal(t, errors.Is(btrfstree.ErrNoItem, btrfstree.ErrNoTree), false)
assert.Equal(t, errors.Is(btrfstree.ErrNoItem, iofs.ErrNotExist), true)
// 4
assert.Equal(t, errors.Is(btrfstree.ErrNoTree, errItem), false)
assert.Equal(t, errors.Is(btrfstree.ErrNoTree, errTree), false)
assert.Equal(t, errors.Is(btrfstree.ErrNoTree, btrfstree.ErrNoItem), false)
assert.Equal(t, errors.Is(btrfstree.ErrNoTree, btrfstree.ErrNoTree), true)
assert.Equal(t, errors.Is(btrfstree.ErrNoTree, iofs.ErrNotExist), true)
// 5
assert.Equal(t, errors.Is(iofs.ErrNotExist, errItem), false)
assert.Equal(t, errors.Is(iofs.ErrNotExist, errTree), false)
assert.Equal(t, errors.Is(iofs.ErrNotExist, btrfstree.ErrNoItem), false)
assert.Equal(t, errors.Is(iofs.ErrNotExist, btrfstree.ErrNoTree), false)
assert.Equal(t, errors.Is(iofs.ErrNotExist, iofs.ErrNotExist), true)
}
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