github.com/onsi/gomega@v1.32.0/matchers/have_existing_field_matcher.go (about)

     1  package matchers
     2  
     3  import (
     4  	"errors"
     5  	"fmt"
     6  
     7  	"github.com/onsi/gomega/format"
     8  )
     9  
    10  type HaveExistingFieldMatcher struct {
    11  	Field string
    12  }
    13  
    14  func (matcher *HaveExistingFieldMatcher) Match(actual interface{}) (success bool, err error) {
    15  	// we don't care about the field's actual value, just about any error in
    16  	// trying to find the field (or method).
    17  	_, err = extractField(actual, matcher.Field, "HaveExistingField")
    18  	if err == nil {
    19  		return true, nil
    20  	}
    21  	var mferr missingFieldError
    22  	if errors.As(err, &mferr) {
    23  		// missing field errors aren't errors in this context, but instead
    24  		// unsuccessful matches.
    25  		return false, nil
    26  	}
    27  	return false, err
    28  }
    29  
    30  func (matcher *HaveExistingFieldMatcher) FailureMessage(actual interface{}) (message string) {
    31  	return fmt.Sprintf("Expected\n%s\nto have field '%s'", format.Object(actual, 1), matcher.Field)
    32  }
    33  
    34  func (matcher *HaveExistingFieldMatcher) NegatedFailureMessage(actual interface{}) (message string) {
    35  	return fmt.Sprintf("Expected\n%s\nnot to have field '%s'", format.Object(actual, 1), matcher.Field)
    36  }