shard_test.go

package giashard

import (
	"errors"
	"testing"
)

type testcase struct {
	url   string
	n     uint
	slug  string
	shard uint64
}

var testcases [11]testcase = [...]testcase{
	// https://github.com/paracrawl/giashard/issues/1
	{"http://www.reddit.com/", 8, "reddit", 249},
	{"http://www.reddit.com/.", 8, "reddit", 249},
	{"http://www.reddit.com./", 8, "reddit", 249},
	{"http://www.reddit.com.", 8, "reddit", 249},
	{"www.reddit.com/.", 8, "reddit", 249},
	{"www.reddit.com.", 8, "reddit", 249},
	{"tulas-handy-charts.de/en/index.html", 8, "tulas-handy-charts", 179},
	{"localhost/ford_a/ford_a_restore_2013_02.html", 8, "localhost", 24},
	{"localhost", 8, "localhost", 24},
	// https://github.com/paracrawl/giashard/issues/8
	{"https://www.futuremovieshop.fi/index.php?language=en", 8, "futuremovieshop", 128},
	{"https://www.futuremovieshop.fi/%s", 8, "futuremovieshop", 128},
}

func TestSlug(t *testing.T) {
	for _, tcase := range testcases {
		slug, err := Slug(tcase.url)
		if err != nil {
			t.Errorf("Slug(%v): error: %v", tcase.url, err)
		} else if slug != tcase.slug {
			t.Errorf("Slug(%v): got %v expected %v", tcase.url, slug, tcase.slug)
		}
	}
}

func TestShardId(t *testing.T) {
	for _, tcase := range testcases {
		shard, err := ShardId(tcase.url, tcase.n)
		if err != nil {
			t.Errorf("ShardId(%v, %v): error: %v", tcase.url, tcase.n, err)
		} else if shard != tcase.shard {
			t.Errorf("ShardId(%v, %v): got %d expected %d", tcase.url, tcase.n, shard, tcase.shard)
		}
	}
}

func TestError(t *testing.T) {
	e := NewShardErr("test", nil)
	if !errors.Is(e, ShardError) {
		t.Errorf("Cannot identify ShardErr")
	}
	if errors.Is(e, errors.New("generic error")) {
		t.Errorf("ShardErr mistakenly identified as generic error")
	}
}