Ticket #8687: regtest.go

package main

import (
        "encoding/json"
        "io/ioutil"
        "log"
        "os"
        "regexp"
)

type test struct {
        Key    string
        Regexp string
        Match  []string
        Reject []string
}

type testSet struct {
        Tests []test
}

func main() {
        log.SetFlags(log.Ltime)
        var filename string
        if len(os.Args) > 1 {
                filename = os.Args[1]
        } else {
                log.Printf("Usage: regtest <filename>")
                return
        }

        file, err := os.Open(filename)
        bytes, err := ioutil.ReadAll(file)
        if err != nil {
                log.Println(err)
                return
        }
        var tests testSet
        if err := json.Unmarshal(bytes, &tests); err != nil {
                log.Print(err)
                return
        }

        for _, t := range tests.Tests {
                _ = runTest(t)
        }
}

func runTest(t test) (result bool) {
        r := regexp.MustCompile(t.Regexp)
        result = true
        log.Printf("key=%s; regexp=%s", t.Key, r.String())
        for _, m := range t.Match {
                if r.MatchString(m) == false {
                        log.Printf("Match failed: '%s'", m)
                        result = false
                }
        }
        for _, m := range t.Reject {
                if r.MatchString(m) == true {
                        log.Printf("Reject failed: '%s'", m)
                        result = false
                }
        }
        return
}