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package gleak
import (
"fmt"
"strings"
"github.com/onsi/gomega/format"
"github.com/onsi/gomega/types"
)
// IgnoringCreator succeeds if the goroutine was created by a function matching
// the specified name. The expected creator function name is either in the form
// of "creatorfunction-name" or "creatorfunction-name...".
//
// An ellipsis "..." after a creatorfunction-name matches any creator function
// name if creatorfunction-name is a prefix and the goroutine's creator function
// name is at least one level deeper. For instance, "foo.bar..." matches
// "foo.bar.baz", but doesn't match "foo.bar".
func IgnoringCreator(creatorfname string) types.GomegaMatcher {
if strings.HasSuffix(creatorfname, "...") {
expectedCreatorFunction := creatorfname[:len(creatorfname)-3+1] // ...one trailing dot still expected
return &ignoringCreator{
expectedCreatorFunction: expectedCreatorFunction,
matchPrefix: true,
}
}
return &ignoringCreator{
expectedCreatorFunction: creatorfname,
}
}
type ignoringCreator struct {
expectedCreatorFunction string
matchPrefix bool
}
// Match succeeds if an actual goroutine's creator function in the backtrace
// matches the specified function name or function name prefix.
func (matcher *ignoringCreator) Match(actual interface{}) (success bool, err error) {
g, err := G(actual, "IgnoringCreator")
if err != nil {
return false, err
}
if matcher.matchPrefix {
return strings.HasPrefix(g.CreatorFunction, matcher.expectedCreatorFunction), nil
}
return g.CreatorFunction == matcher.expectedCreatorFunction, nil
}
// FailureMessage returns a failure message if the actual goroutine doesn't have
// the specified function name/prefix (and optional state) at the top of the
// backtrace.
func (matcher *ignoringCreator) FailureMessage(actual interface{}) (message string) {
return format.Message(actual, matcher.message())
}
// NegatedFailureMessage returns a failure message if the actual goroutine has
// the specified function name/prefix (and optional state) at the top of the
// backtrace.
func (matcher *ignoringCreator) NegatedFailureMessage(actual interface{}) (message string) {
return format.Message(actual, "not "+matcher.message())
}
func (matcher *ignoringCreator) message() string {
if matcher.matchPrefix {
return fmt.Sprintf("to be created by a function with prefix %q", matcher.expectedCreatorFunction)
}
return fmt.Sprintf("to be created by %q", matcher.expectedCreatorFunction)
}
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