How to use SplitPackageFunc method of trace Package

Best Go-testdeep code snippet using trace.SplitPackageFunc

trace_test.go

Source:trace_test.go

...96	test.EqualStr(t, trace.FindGoModDirLinks(truePath), goModDir)97	test.EqualStr(t, trace.FindGoModDirLinks(linkPath), goModDir)98	test.EqualStr(t, trace.FindGoModDirLinks(tmp), "")99}100func TestSplitPackageFunc(t *testing.T) {101	pkg, fn := trace.SplitPackageFunc("testing.Fatal")102	test.EqualStr(t, pkg, "testing")103	test.EqualStr(t, fn, "Fatal")104	pkg, fn = trace.SplitPackageFunc("github.com/maxatome/go-testdeep/td.Cmp")105	test.EqualStr(t, pkg, "github.com/maxatome/go-testdeep/td")106	test.EqualStr(t, fn, "Cmp")107	pkg, fn = trace.SplitPackageFunc("foo/bar/test.(*T).Cmp")108	test.EqualStr(t, pkg, "foo/bar/test")109	test.EqualStr(t, fn, "(*T).Cmp")110	pkg, fn = trace.SplitPackageFunc("foo/bar/test.(*X).c.func1")111	test.EqualStr(t, pkg, "foo/bar/test")112	test.EqualStr(t, fn, "(*X).c.func1")113	pkg, fn = trace.SplitPackageFunc("foo/bar/test.(*X).c.func1")114	test.EqualStr(t, pkg, "foo/bar/test")115	test.EqualStr(t, fn, "(*X).c.func1")116	pkg, fn = trace.SplitPackageFunc("foobar")117	test.EqualStr(t, pkg, "")118	test.EqualStr(t, fn, "foobar")119	pkg, fn = trace.SplitPackageFunc("")120	test.EqualStr(t, pkg, "")121	test.EqualStr(t, fn, "")122}123func d(end string) []trace.Level { return trace.Retrieve(0, end) }124func c(end string) []trace.Level { return d(end) }125func b(end string) []trace.Level { return c(end) }126func a(end string) []trace.Level { return b(end) }127func TestZRetrieve(t *testing.T) {128	trace.Reset()129	levels := a("testing.tRunner")130	if !test.EqualInt(t, len(levels), 5) ||131		!test.EqualStr(t, levels[0].Func, "d") ||132		!test.EqualStr(t, levels[0].Package, "github.com/maxatome/go-testdeep/internal/trace_test") ||133		!test.EqualStr(t, levels[1].Func, "c") ||...

trace.go

Source:trace.go

...25	pc, _, _, ok := runtime.Caller(sk)26	if ok {27		fn := runtime.FuncForPC(pc)28		if fn != nil {29			pkg, _ := SplitPackageFunc(fn.Name())30			return pkg31		}32	}33	return ""34}35// IgnorePackage records the calling package as ignored one in trace.36func IgnorePackage(skip ...int) bool {37	if pkg := getPackage(skip...); pkg != "" {38		ignorePkg[pkg] = struct{}{}39		return true40	}41	return false42}43// UnignorePackage cancels a previous use of [IgnorePackage], so the44// calling package is no longer ignored. Only intended to be used in45// go-testdeep internal tests.46func UnignorePackage(skip ...int) bool {47	if pkg := getPackage(skip...); pkg != "" {48		delete(ignorePkg, pkg)49		return true50	}51	return false52}53// IsIgnoredPackage returns true if pkg is ignored, false54// otherwise. Only intended to be used in go-testdeep internal tests.55func IsIgnoredPackage(pkg string) (ok bool) {56	_, ok = ignorePkg[pkg]57	return58}59// FindGoModDir finds the closest directory containing go.mod file60// starting from directory in.61func FindGoModDir(in string) string {62	for {63		_, err := os.Stat(filepath.Join(in, "go.mod"))64		if err == nil {65			// Do not accept /tmp/go.mod66			if in != os.TempDir() {67				return in + string(filepath.Separator)68			}69			return ""70		}71		nd := filepath.Dir(in)72		if nd == in {73			return ""74		}75		in = nd76	}77}78// FindGoModDirLinks finds the closest directory containing go.mod79// file starting from directory in after cleaning it. If not found,80// expands symlinks and re-searches.81func FindGoModDirLinks(in string) string {82	in = filepath.Clean(in)83	if gm := FindGoModDir(in); gm != "" {84		return gm85	}86	lin, err := filepath.EvalSymlinks(in)87	if err == nil && lin != in {88		return FindGoModDir(lin)89	}90	return ""91}92// Reset resets the ignored packages map plus cached mod and GOPATH93// directories ([Init] should be called again). Only intended to be94// used in go-testdeep internal tests.95func Reset() {96	ignorePkg = map[string]struct{}{}97	goPaths = nil98	goModDir = ""99}100// Init initializes trace global variables.101func Init() {102	// GOPATH directories103	goPaths = nil104	for _, dir := range filepath.SplitList(build.Default.GOPATH) {105		dir = filepath.Clean(dir)106		goPaths = append(goPaths,107			filepath.Join(dir, "pkg", "mod")+string(filepath.Separator),108			filepath.Join(dir, "src")+string(filepath.Separator),109		)110	}111	if wd, err := os.Getwd(); err == nil {112		// go.mod directory113		goModDir = FindGoModDirLinks(wd)114	}115}116// Frames is the interface corresponding to type returned by117// [runtime.CallersFrames]. See [CallersFrames] variable.118type Frames interface {119	Next() (frame runtime.Frame, more bool)120}121// CallersFrames is only intended to be used in go-testdeep internal122// tests to cover all cases.123var CallersFrames = func(callers []uintptr) Frames {124	return runtime.CallersFrames(callers)125}126// Retrieve retrieves a trace and returns it.127func Retrieve(skip int, endFunction string) Stack {128	var trace Stack129	var pc [40]uintptr130	if num := runtime.Callers(skip+2, pc[:]); num > 0 {131		checkIgnore := true132		frames := CallersFrames(pc[:num])133		for {134			frame, more := frames.Next()135			fn := frame.Function136			if fn == endFunction {137				break138			}139			var pkg string140			if fn == "" {141				if frame.File == "" {142					if more {143						continue144					}145					break146				}147				fn = "<unknown function>"148			} else {149				pkg, fn = SplitPackageFunc(fn)150				if checkIgnore && IsIgnoredPackage(pkg) {151					if more {152						continue153					}154					break155				}156				checkIgnore = false157			}158			file := strings.TrimPrefix(frame.File, goModDir)159			if file == frame.File {160				for _, dir := range goPaths {161					file = strings.TrimPrefix(frame.File, dir)162					if file != frame.File {163						break164					}165				}166				if file == frame.File {167					file = strings.TrimPrefix(frame.File, build.Default.GOROOT)168					if file != frame.File {169						file = filepath.Join("$GOROOT", file)170					}171				}172			}173			level := Level{174				Package: pkg,175				Func:    fn,176			}177			if file != "" {178				level.FileLine = fmt.Sprintf("%s:%d", file, frame.Line)179			}180			trace = append(trace, level)181			if !more {182				break183			}184		}185	}186	return trace187}188// SplitPackageFunc splits a fully qualified function name into its189// package and function parts:190//191//	"foo/bar/test.fn"            â "foo/bar/test", "fn"192//	"foo/bar/test.X.fn"          â "foo/bar/test", "X.fn"193//	"foo/bar/test.(*X).fn"       â "foo/bar/test", "(*X).fn"194//	"foo/bar/test.(*X).fn.func1" â "foo/bar/test", "(*X).fn.func1"195//	"weird"                      â "", "weird"196func SplitPackageFunc(fn string) (string, string) {197	sp := strings.LastIndexByte(fn, '/')198	if sp < 0 {199		sp = 0 // std package200	}201	dp := strings.IndexByte(fn[sp:], '.')202	if dp < 0 {203		return "", fn204	}205	return fn[:sp+dp], fn[sp+dp+1:]206}...

SplitPackageFunc

Using AI Code Generation

1import (2func main() {3    f, _ := os.Create("trace.out")4    defer f.Close()5    trace.Start(f)6    defer trace.Stop()7    SplitPackageFunc()8}9func SplitPackageFunc() {10}

SplitPackageFunc

Using AI Code Generation

1import (2func main() {3	trace.Start(os.Stderr)4	defer trace.Stop()5	for i := 0; i < 20; i++ {6		go func() {7			fmt.Println("Hello World!")8		}()9	}10	time.Sleep(5 * time.Second)11}12import (13func main() {14	trace.Start(os.Stderr)15	defer trace.Stop()16	for i := 0; i < 20; i++ {17		go func() {18			fmt.Println("Hello World!")19		}()20	}21	time.Sleep(5 * time.Second)22}23import (24func main() {25	trace.Start(os.Stderr)26	defer trace.Stop()27	for i := 0; i < 20; i++ {28		go func() {29			fmt.Println("Hello World!")30		}()31	}32	time.Sleep(5 * time.Second)33}34import (35func main() {36	trace.Start(os.Stderr)37	defer trace.Stop()38	for i := 0; i < 20; i++ {39		go func() {40			fmt.Println("Hello World!")41		}()42	}43	time.Sleep(5 * time.Second)44}45import (46func main() {47	trace.Start(os.Stderr)48	defer trace.Stop()49	for i := 0; i < 20; i++ {50		go func() {51			fmt.Println("Hello World!")52		}()53	}54	time.Sleep(5 * time.Second)55}56import (57func main() {

SplitPackageFunc

Using AI Code Generation

1import (2func main() {3    trace.Start(os.Stderr)4    defer trace.Stop()5    trace.SplitPackageFunc("main")6    fmt.Println("Hello, World!")7}8import (9func main() {10    trace.Start(os.Stderr)11    defer trace.Stop()12    trace.SplitPackageFunc("main")13    fmt.Println("Hello, World!")14}15import (16func main() {17    trace.Start(os.Stderr)18    defer trace.Stop()19    trace.SplitPackageFunc("main")20    fmt.Println("Hello, World!")21}22import (23func main() {24    trace.Start(os.Stderr)25    defer trace.Stop()26    trace.SplitPackageFunc("main")27    fmt.Println("Hello, World!")28}29import (30func main() {31    trace.Start(os.Stderr)32    defer trace.Stop()33    trace.SplitPackageFunc("main")34    fmt.Println("Hello, World!")35}36import (37func main() {38    trace.Start(os.Stderr)39    defer trace.Stop()40    trace.SplitPackageFunc("main")41    fmt.Println("Hello, World!")42}43import (44func main() {45    trace.Start(os.Stderr)46    defer trace.Stop()47    trace.SplitPackageFunc("main")48    fmt.Println("Hello, World!")49}50import (51func main() {52    trace.Start(os.Stderr)

SplitPackageFunc

Using AI Code Generation

1import (2func main() {3	trace.Start(os.Stderr)4	defer trace.Stop()5	SplitPackageFunc()6}7import (8func SplitPackageFunc() {9	fmt.Println("SplitPackageFunc")10}

SplitPackageFunc

Using AI Code Generation

1import (2func main() {3	t := new(runtime.Trace)4	err := t.Start()5	if err != nil {6		fmt.Println(err)7	}8	foo()9	t.Stop()10	t.Print()11}12func foo() {13	bar()14}15func bar() {16	time.Sleep(2 * time.Second)17}

SplitPackageFunc

Using AI Code Generation

1import (2func main() {3	trace.Start(os.Stderr)4	defer trace.Stop()5	t.SplitPackageFunc("main", "main")6	fmt.Println(t)7}8import (9func main() {10	trace.Start(os.Stderr)11	defer trace.Stop()12	t.SplitPackageFunc("main", "main")13	fmt.Println(t)14}15import (16func main() {17	trace.Start(os.Stderr)18	defer trace.Stop()19	t.SplitPackageFunc("main", "main")20	fmt.Println(t)21}22import (23func main() {24	trace.Start(os.Stderr)25	defer trace.Stop()26	t.SplitPackageFunc("main", "main")27	fmt.Println(t)28}29import (30func main() {31	trace.Start(os.Stderr)32	defer trace.Stop()33	t.SplitPackageFunc("main", "main")34	fmt.Println(t)35}36import (37func main() {38	trace.Start(os.Stderr)39	defer trace.Stop()40	t.SplitPackageFunc("main", "main")41	fmt.Println(t)42}43import (44func main() {45	trace.Start(os.Stderr)46	defer trace.Stop()47	t.SplitPackageFunc("main", "main")48	fmt.Println(t)49}

SplitPackageFunc

Using AI Code Generation

1import "fmt"2import "runtime/trace"3func main() {4trace.Start(os.Stderr)5defer trace.Stop()6fmt.Println(c)7}8import "fmt"9import "runtime/trace"10func main() {11trace.Start(os.Stderr)12defer trace.Stop()13fmt.Println(c)14}15import "fmt"16import "runtime/trace"17func main() {18trace.Start(os.Stderr)19defer trace.Stop()20fmt.Println(c)21}22import "fmt"23import "runtime/trace"24func main() {25trace.Start(os.Stderr)26defer trace.Stop()27fmt.Println(c)28}29import "fmt"30import "runtime/trace"31func main() {32trace.Start(os.Stderr)33defer trace.Stop()34fmt.Println(c)35}36import "fmt"37import "runtime/trace"38func main() {39trace.Start(os.Stderr)40defer trace.Stop()41fmt.Println(c)42}43import "fmt"44import "runtime/trace"45func main() {46trace.Start(os.Stderr

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