1package http3
2
3import (
4	"go/ast"
5	"go/parser"
6	"go/token"
7	"path"
8	"runtime"
9	"strconv"
10
11	. "github.com/onsi/ginkgo"
12	. "github.com/onsi/gomega"
13)
14
15var _ = Describe("error codes", func() {
16	It("has a string representation for every error code", func() {
17		// We parse the error code file, extract all constants, and verify that
18		// each of them has a string version. Go FTW!
19		_, thisfile, _, ok := runtime.Caller(0)
20		if !ok {
21			panic("Failed to get current frame")
22		}
23		filename := path.Join(path.Dir(thisfile), "error_codes.go")
24		fileAst, err := parser.ParseFile(token.NewFileSet(), filename, nil, 0)
25		Expect(err).NotTo(HaveOccurred())
26		constSpecs := fileAst.Decls[2].(*ast.GenDecl).Specs
27		Expect(len(constSpecs)).To(BeNumerically(">", 4)) // at time of writing
28		for _, c := range constSpecs {
29			valString := c.(*ast.ValueSpec).Values[0].(*ast.BasicLit).Value
30			val, err := strconv.ParseInt(valString, 0, 64)
31			Expect(err).NotTo(HaveOccurred())
32			Expect(errorCode(val).String()).ToNot(Equal("unknown error code"))
33		}
34	})
35
36	It("has a string representation for unknown error codes", func() {
37		Expect(errorCode(0x1337).String()).To(Equal("unknown error code: 0x1337"))
38	})
39})
40