be_a_regular_file.go

Documentation: github.com/onsi/gomega/matchers

     1  // untested sections: 5
     2  
     3  package matchers
     4  
     5  import (
     6  	"fmt"
     7  	"os"
     8  
     9  	"github.com/onsi/gomega/format"
    10  )
    11  
    12  type notARegularFileError struct {
    13  	os.FileInfo
    14  }
    15  
    16  func (t notARegularFileError) Error() string {
    17  	fileInfo := os.FileInfo(t)
    18  	switch {
    19  	case fileInfo.IsDir():
    20  		return "file is a directory"
    21  	default:
    22  		return fmt.Sprintf("file mode is: %s", fileInfo.Mode().String())
    23  	}
    24  }
    25  
    26  type BeARegularFileMatcher struct {
    27  	expected interface{}
    28  	err      error
    29  }
    30  
    31  func (matcher *BeARegularFileMatcher) Match(actual interface{}) (success bool, err error) {
    32  	actualFilename, ok := actual.(string)
    33  	if !ok {
    34  		return false, fmt.Errorf("BeARegularFileMatcher matcher expects a file path")
    35  	}
    36  
    37  	fileInfo, err := os.Stat(actualFilename)
    38  	if err != nil {
    39  		matcher.err = err
    40  		return false, nil
    41  	}
    42  
    43  	if !fileInfo.Mode().IsRegular() {
    44  		matcher.err = notARegularFileError{fileInfo}
    45  		return false, nil
    46  	}
    47  	return true, nil
    48  }
    49  
    50  func (matcher *BeARegularFileMatcher) FailureMessage(actual interface{}) (message string) {
    51  	return format.Message(actual, fmt.Sprintf("to be a regular file: %s", matcher.err))
    52  }
    53  
    54  func (matcher *BeARegularFileMatcher) NegatedFailureMessage(actual interface{}) (message string) {
    55  	return format.Message(actual, "not be a regular file")
    56  }
    57
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