add test cases and remove unnecessary error

tools/go-agent/instrument/plugins/instrument.go

@@ -50,10 +50,6 @@ import (
 //go:embed templates
 var templatesFS embed.FS
 
-var (
-	errNoVersionFound = errors.New("no version found in the path of the source file")
-)
-
 type Instrument struct {
 	realInst        instrument.Instrument
 	methodFilters   []*instrument.Point
@@ -110,7 +106,7 @@ func (i *Instrument) CouldHandle(opts *api.CompileOptions) bool {
 		}
 		// check the version of the framework could handler
 		version, err := i.tryToFindThePluginVersion(opts, ins)
-		if err != nil && !errors.Is(err, errNoVersionFound) {
+		if err != nil {
 			logrus.Warnf("ignore the plugin %s, because %s", ins.Name(), err)
 			continue
 		}
@@ -566,7 +562,10 @@ func (i *Instrument) tryToFindThePluginVersion(opts *api.CompileOptions, ins ins
 		// arg example: github.com/!shopify/[email protected]/acl.go
 		_, afterPkg, found := strings.Cut(arg, escapedBasePkg)
 		if !found {
-			return "", errors.Wrapf(errNoVersionFound, "package %s, go file path: %s", basePkg, arg)
+			// This could happen if the module is replaced by a local one
+			// For example, in the E2E
+			logrus.Warnf("could not found the go version of the package %s, go file path: %s", basePkg, arg)
+			return "", nil
 		}
 
 		if !strings.HasPrefix(afterPkg, "@") {

tools/go-agent/instrument/plugins/instrument_test.go

@@ -21,6 +21,8 @@ import (
 	"embed"
 	"testing"
 
+	"github.com/stretchr/testify/require"
+
 	"github.com/apache/skywalking-go/plugins/core/instrument"
 	"github.com/apache/skywalking-go/tools/go-agent/instrument/api"
 )
@@ -52,12 +54,35 @@ func TestInstrument_tryToFindThePluginVersion(t *testing.T) {
 			NewTestInstrument("github.com/Shopify/sarama"),
 			"1.34.1",
 		},
+		{
+			"plugin for go stdlib",
+			&api.CompileOptions{
+				AllArgs: []string{
+					"/opt/homebrew/Cellar/go/1.21.4/libexec/src/runtime/metrics/sample.go",
+				},
+			},
+			NewTestInstrument("runtime/metrics"),
+			"",
+		},
+		{
+			"plugin for replaced module",
+			&api.CompileOptions{
+				AllArgs: []string{
+					"/home/user/skywalking-go/toolkit/trace/api.go",
+				},
+			},
+			NewTestInstrument("github.com/apache/skywalking-go/toolkit"),
+			"",
+		},
 	}
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			i := &Instrument{}
-			got, _ := i.tryToFindThePluginVersion(tt.opts, tt.ins)
+			got, err := i.tryToFindThePluginVersion(tt.opts, tt.ins)
+			if err != nil {
+				require.NoError(t, err)
+			}
 			if got != tt.want {
 				t.Errorf("tryToFindThePluginVersion() got = %v, want %v", got, tt.want)
 			}