be_a_regular_file.go
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// untested sections: 5
package matchers
import (
"fmt"
"os"
"github.com/onsi/gomega/format"
)
type notARegularFileError struct {
os.FileInfo
}
func (t notARegularFileError) Error() string {
fileInfo := os.FileInfo(t)
switch {
case fileInfo.IsDir():
return "file is a directory"
default:
return fmt.Sprintf("file mode is: %s", fileInfo.Mode().String())
}
}
type BeARegularFileMatcher struct {
expected interface{}
err error
}
func (matcher *BeARegularFileMatcher) Match(actual interface{}) (success bool, err error) {
actualFilename, ok := actual.(string)
if !ok {
return false, fmt.Errorf("BeARegularFileMatcher matcher expects a file path")
}
fileInfo, err := os.Stat(actualFilename)
if err != nil {
matcher.err = err
return false, nil
}
if !fileInfo.Mode().IsRegular() {
matcher.err = notARegularFileError{fileInfo}
return false, nil
}
return true, nil
}
func (matcher *BeARegularFileMatcher) FailureMessage(actual interface{}) (message string) {
return format.Message(actual, fmt.Sprintf("to be a regular file: %s", matcher.err))
}
func (matcher *BeARegularFileMatcher) NegatedFailureMessage(actual interface{}) (message string) {
return format.Message(actual, fmt.Sprintf("not be a regular file"))
}