package main

import (
	"go/parser"
	"go/token"
	"os"
	"path/filepath"
	"strconv"
	"strings"
	"testing"
)

func TestToolDoesNotImportExamplePlugins(t *testing.T) {
	roots := []string{".", filepath.Join("..", "..", "internal", "build")}
	fset := token.NewFileSet()
	for _, root := range roots {
		entries, err := os.ReadDir(root)
		if err != nil {
			t.Fatal(err)
		}
		for _, entry := range entries {
			name := entry.Name()
			if entry.IsDir() || !strings.HasSuffix(name, ".go") {
				continue
			}
			file, err := parser.ParseFile(fset, filepath.Join(root, name), nil, parser.ImportsOnly)
			if err != nil {
				t.Fatal(err)
			}
			for _, spec := range file.Imports {
				path, err := strconv.Unquote(spec.Path.Value)
				if err != nil {
					t.Fatal(err)
				}
				if strings.Contains(path, "examples/hello") {
					t.Fatalf("%s imports %s", name, path)
				}
			}
		}
	}
}