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package matchers
import (
"errors"
"fmt"
"github.com/onsi/gomega/format"
)
type HaveExistingFieldMatcher struct {
Field string
}
func (matcher *HaveExistingFieldMatcher) Match(actual interface{}) (success bool, err error) {
// we don't care about the field's actual value, just about any error in
// trying to find the field (or method).
_, err = extractField(actual, matcher.Field, "HaveExistingField")
if err == nil {
return true, nil
}
var mferr missingFieldError
if errors.As(err, &mferr) {
// missing field errors aren't errors in this context, but instead
// unsuccessful matches.
return false, nil
}
return false, err
}
func (matcher *HaveExistingFieldMatcher) FailureMessage(actual interface{}) (message string) {
return fmt.Sprintf("Expected\n%s\nto have field '%s'", format.Object(actual, 1), matcher.Field)
}
func (matcher *HaveExistingFieldMatcher) NegatedFailureMessage(actual interface{}) (message string) {
return fmt.Sprintf("Expected\n%s\nnot to have field '%s'", format.Object(actual, 1), matcher.Field)
}
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