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errors_1.13_test.go
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errors_1.13_test.go
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// +build go1.13
package gin
import (
"errors"
"fmt"
"testing"
"github.com/stretchr/testify/assert"
)
type TestErr string
func (e TestErr) Error() string { return string(e) }
// TestErrorUnwrap tests the behavior of gin.Error with "errors.Is()" and "errors.As()".
// "errors.Is()" and "errors.As()" have been added to the standard library in go 1.13,
// hence the "// +build go1.13" directive at the beginning of this file.
func TestErrorUnwrap(t *testing.T) {
innerErr := TestErr("somme error")
// 2 layers of wrapping : use 'fmt.Errorf("%w")' to wrap a gin.Error{}, which itself wraps innerErr
err := fmt.Errorf("wrapped: %w", &Error{
Err: innerErr,
Type: ErrorTypeAny,
})
// check that 'errors.Is()' and 'errors.As()' behave as expected :
assert.True(t, errors.Is(err, innerErr))
var testErr TestErr
assert.True(t, errors.As(err, &testErr))
}