You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: ast_test.go
    path of file: ./repos/macdriver/generate/declparse
    
    the code of the file until where you have to start completion: package declparse

import (
	"regexp"
	"testing"
)

func TestAST_
    
func TestAST_Strings(t *testing.T) {
	for _, tt := range tests {
		if tt.ParseOnly {
			continue
		}
		t.Run(tt.s, func(t *testing.T) {
			got := normalizeWhitespace(tt.n.String())
			want := normalizeWhitespace(tt.s)
			if got != want {
				t.Errorf("String()\n  got: %s\n want: %s", got, want)
			}
		})
	}
}