package parser

import (
	"fmt"
	"testing"

	"git.makaay.nl/mauricem/go-parsekit/parse"
)

type statesT struct {
	name string
	in   string
	out  interface{}
	err  string
}

type parseTest struct {
	input    interface{}
	expected []string
}

func testParseHandler(t *testing.T, p *parser, handler parse.Handler, test parseTest) {
	err := parse.New(handler)(test.input)
	results := []string{}
	for _, cmd := range p.commands {
		results = append(results, cmd.String())
	}
	if err != nil {
		results = append(results, fmt.Sprintf("Error: %s", err))
	}

	for i, e := range test.expected {
		if i > len(results)-1 {
			t.Errorf("No result at index %d, expected: %s", i, e)
			continue
		}
		r := results[i]
		if e != r {
			t.Errorf("Unexpected result at index %d:\nexpected: %s\nactual: %s\n", i, e, r)
		}
	}
	if len(results) > len(test.expected) {
		t.Errorf("Got more results than expected, surplus result(s):\n")
		for i := len(test.expected); i < len(results); i++ {
			t.Errorf("[%d] %s", i, results[i])
		}
	}
}