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// SPDX-FileCopyrightText: 2026 Stefan Majewsky <majewsky@gmx.net>
// SPDX-License-Identifier: Apache-2.0
package oblast
import (
"errors"
"testing"
"go.xyrillian.de/oblast/internal/assert"
)
type fooError struct{}
type barError struct{}
type bazError struct{}
func (fooError) Error() string { return "foo" }
func (barError) Error() string { return "bar" }
func (bazError) Error() string { return "baz" }
func TestIOError(t *testing.T) {
err := newIOError(nil, "File.Close", nil)
assert.Equal(t, err == nil, true)
err = newIOError(fooError{}, "File.Close", nil)
assert.ErrEqual(t, err, "foo")
assert.DeepEqual(t, err, error(fooError{})) // check for no wrapping in type ioError without cleanup error
err = newIOError(nil, "File.Close", barError{})
assert.ErrEqual(t, err, "during File.Close(): bar")
assert.Equal(t, errors.Is(err, fooError{}), false)
assert.Equal(t, errors.Is(err, barError{}), true)
assert.Equal(t, errors.Is(err, bazError{}), false)
err = newIOError(fooError{}, "File.Close", barError{})
assert.ErrEqual(t, err, "foo (additional error during File.Close(): bar)")
assert.Equal(t, errors.Is(err, fooError{}), true)
assert.Equal(t, errors.Is(err, barError{}), true)
assert.Equal(t, errors.Is(err, bazError{}), false)
}
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