diff --git a/gopls/internal/goxls/parserutil/parser_util.go b/gopls/internal/goxls/parserutil/parser_util.go
index 5999139f0ea..a3cc6b093c5 100644
--- a/gopls/internal/goxls/parserutil/parser_util.go
+++ b/gopls/internal/goxls/parserutil/parser_util.go
@@ -5,10 +5,8 @@
 package parserutil
 
 import (
-	"strings"
-
+	"github.com/goplus/gop"
 	"github.com/goplus/gop/ast"
-	"github.com/goplus/gop/cl"
 	"github.com/goplus/gop/parser"
 	"github.com/goplus/gop/token"
 	"github.com/goplus/mod/gopmod"
@@ -50,25 +48,14 @@ func ParseFileEx(mod *gopmod.Module, fset *token.FileSet, filename string, src i
 	return
 }
 
-const (
-	casePrefix = "case"
-)
-
-func testNameSuffix(testType string) string {
-	if c := testType[0]; c >= 'A' && c <= 'Z' {
-		return testType
-	}
-	return "_" + testType
-}
-
-// GetClassType is get class type from ast.File and filename
-func GetClassType(file *ast.File, filename string) (classType string, ok bool) {
-	if file.IsClass {
-		ok = true
-		classType, _, _ = cl.ClassNameAndExt(filename)
-		if strings.HasSuffix(filename, "test.gox") && !file.IsProj {
-			classType = casePrefix + testNameSuffix(classType)
+func GetClassType(file *ast.File, filename string, getMod func() (*gopmod.Module, error)) (classType string, isTest bool, err error) {
+	var mod *gopmod.Module
+	if file.IsProj {
+		mod, err = getMod()
+		if err != nil {
+			return
 		}
 	}
+	classType, isTest = gop.GetFileClassType(mod, file, filename)
 	return
 }
diff --git a/gopls/internal/lsp/source/completion/completion_gox.go b/gopls/internal/lsp/source/completion/completion_gox.go
index f137be3478c..8899238ebc5 100644
--- a/gopls/internal/lsp/source/completion/completion_gox.go
+++ b/gopls/internal/lsp/source/completion/completion_gox.go
@@ -24,6 +24,7 @@ import (
 	"github.com/goplus/gop/scanner"
 	"github.com/goplus/gop/token"
 	"github.com/goplus/gop/x/typesutil"
+	"github.com/goplus/mod/gopmod"
 	"golang.org/x/sync/errgroup"
 	"golang.org/x/tools/gop/ast/astutil"
 	"golang.org/x/tools/gopls/internal/goxls"
@@ -1431,7 +1432,12 @@ func (c *gopCompleter) lexical(ctx context.Context) error {
 		// position or embedded in interface declarations).
 		// builtinComparable = types.Universe.Lookup("comparable")
 	)
-	classType, isClass := parserutil.GetClassType(c.file, c.filename)
+	classType, _, err := parserutil.GetClassType(c.file, c.filename, func() (*gopmod.Module, error) {
+		return c.snapshot.GopModForFile(ctx, c.fh.URI())
+	})
+	if err != nil {
+		return fmt.Errorf("getting classType for gopCompleter: %w", err)
+	}
 	// Track seen variables to avoid showing completions for shadowed variables.
 	// This works since we look at scopes from innermost to outermost.
 	seen := make(map[string]struct{})
@@ -1446,7 +1452,7 @@ func (c *gopCompleter) lexical(ctx context.Context) error {
 		for _, name := range scope.Names() {
 			declScope, obj := scope.LookupParent(name, c.pos)
 			// Go+ class
-			if isClass && name == classType {
+			if c.file.IsClass && name == classType {
 				c.methodsAndFields(obj.Type(), true, nil, c.deepState.enqueue)
 				continue
 			}
diff --git a/gopls/internal/lsp/source/symbols_gox.go b/gopls/internal/lsp/source/symbols_gox.go
index 6e83dd37426..025f4f23891 100644
--- a/gopls/internal/lsp/source/symbols_gox.go
+++ b/gopls/internal/lsp/source/symbols_gox.go
@@ -11,6 +11,7 @@ import (
 	"github.com/goplus/gop/ast"
 	"github.com/goplus/gop/token"
 	"github.com/goplus/gop/x/typesutil"
+	"github.com/goplus/mod/gopmod"
 	"golang.org/x/tools/gopls/internal/goxls/parserutil"
 	"golang.org/x/tools/gopls/internal/lsp/protocol"
 	"golang.org/x/tools/internal/event"
@@ -25,7 +26,13 @@ func GopDocumentSymbols(ctx context.Context, snapshot Snapshot, fh FileHandle) (
 		return nil, fmt.Errorf("getting file for GopDocumentSymbols: %w", err)
 	}
 	file := pgf.File
-	classType, _ := parserutil.GetClassType(file, fh.URI().Filename())
+
+	classType, _, err := parserutil.GetClassType(file, fh.URI().Filename(), func() (*gopmod.Module, error) {
+		return snapshot.GopModForFile(ctx, fh.URI())
+	})
+	if err != nil {
+		return nil, fmt.Errorf("getting classType for GopDocumentSymbols: %w", err)
+	}
 	// Build symbols for file declarations. When encountering a declaration with
 	// errors (typically because positions are invalid), we skip the declaration
 	// entirely. VS Code fails to show any symbols if one of the top-level