xgo/assert/trace.go
2019-01-08 23:17:42 -08:00

72 lines
1.2 KiB
Go

package assert
import (
"fmt"
"runtime"
"strings"
"unicode"
"unicode/utf8"
)
func errorTrace() []string {
pc := uintptr(0)
file := ""
line := 0
ok := false
name := ""
var callers []string
for i := 0; ; i++ {
pc, file, line, ok = runtime.Caller(i)
if !ok {
break
}
if file == "<autogenerated>" {
break
}
f := runtime.FuncForPC(pc)
if f == nil {
break
}
name = f.Name()
if name == "testing.tRunner" {
break
}
parts := strings.Split(file, "/")
file = parts[len(parts)-1]
if len(parts) > 1 {
dir := parts[len(parts)-2]
if (dir != "assert" && dir != "mock" && dir != "require") || file == "mock_test.go" {
callers = append(callers, fmt.Sprintf("%s:%d", file, line))
}
}
// Drop the package
segments := strings.Split(name, ".")
name = segments[len(segments)-1]
if isTest(name, "Test") ||
isTest(name, "Benchmark") ||
isTest(name, "Example") {
break
}
}
return callers
}
func isTest(name, prefix string) bool {
if !strings.HasPrefix(name, prefix) {
return false
}
if len(name) == len(prefix) { // "Test" is ok
return true
}
rune_, _ := utf8.DecodeRuneInString(name[len(prefix):])
return !unicode.IsLower(rune_)
}