diff --git a/go/analysis/passes/internal/analysisutil/util_test.go b/go/analysis/passes/internal/analysisutil/util_test.go
new file mode 100644
index 0000000..2d7e94e
--- /dev/null
+++ b/go/analysis/passes/internal/analysisutil/util_test.go
@@ -0,0 +1,57 @@
+// Copyright 2021 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package analysisutil_test
+
+import (
+	"go/ast"
+	"go/parser"
+	"go/token"
+	"go/types"
+	"testing"
+
+	"golang.org/x/tools/go/analysis/passes/internal/analysisutil"
+	"golang.org/x/tools/internal/typeparams"
+)
+
+func TestHasSideEffects(t *testing.T) {
+	if !typeparams.Enabled {
+		t.Skip("type parameters are not enabled")
+	}
+	src := `package p
+
+type T int
+
+type G[P any] int
+
+func _() {
+	var x int
+	_ = T(x)
+	_ = G[int](x)
+}
+`
+	fset := token.NewFileSet()
+	file, err := parser.ParseFile(fset, "p.go", src, 0)
+	if err != nil {
+		t.Fatal(err)
+	}
+	var conf types.Config
+	info := &types.Info{
+		Types: make(map[ast.Expr]types.TypeAndValue),
+	}
+	_, err = conf.Check("", fset, []*ast.File{file}, info)
+	if err != nil {
+		t.Fatal(err)
+	}
+	ast.Inspect(file, func(node ast.Node) bool {
+		call, ok := node.(*ast.CallExpr)
+		if !ok {
+			return true
+		}
+		if got := analysisutil.HasSideEffects(info, call); got != false {
+			t.Errorf("HasSideEffects(%s) = true, want false", types.ExprString(call))
+		}
+		return true
+	})
+}