package matchers import ( "fmt" "github.com/onsi/gomega/format" ) type HaveSuffixMatcher struct { Suffix string Args []interface{} } func (matcher *HaveSuffixMatcher) Match(actual interface{}) (success bool, err error) { actualString, ok := toString(actual) if !ok { return false, fmt.Errorf("HaveSuffix matcher requires a string or stringer. Got:\n%s", format.Object(actual, 1)) } suffix := matcher.suffix() return len(actualString) >= len(suffix) && actualString[len(actualString) - len(suffix):] == suffix, nil } func (matcher *HaveSuffixMatcher) suffix() string { if len(matcher.Args) > 0 { return fmt.Sprintf(matcher.Suffix, matcher.Args...) } return matcher.Suffix } func (matcher *HaveSuffixMatcher) FailureMessage(actual interface{}) (message string) { return format.Message(actual, "to have suffix", matcher.suffix()) } func (matcher *HaveSuffixMatcher) NegatedFailureMessage(actual interface{}) (message string) { return format.Message(actual, "not to have suffix", matcher.suffix()) }