package cursortoken

import (
	"git.blackforestbytes.com/BlackForestBytes/goext/tst"
	"testing"
)

func TestPageToken(t *testing.T) {
	tok := Page(5)
	tst.AssertEqual(t, tok.Token(), "$5")
	tst.AssertFalse(t, tok.IsEnd())
	tst.AssertFalse(t, tok.IsStart())
}

func TestPageTokenOne(t *testing.T) {
	tok := Page(1)
	tst.AssertEqual(t, tok.Token(), "$1")
	tst.AssertFalse(t, tok.IsEnd())
	tst.AssertTrue(t, tok.IsStart())
}

func TestPageTokenLarge(t *testing.T) {
	tok := Page(123456)
	tst.AssertEqual(t, tok.Token(), "$123456")
}

func TestPageTokenZero(t *testing.T) {
	tok := Page(0)
	tst.AssertEqual(t, tok.Token(), "$0")
	tst.AssertFalse(t, tok.IsEnd())
	tst.AssertFalse(t, tok.IsStart())
}

func TestPageEndToken(t *testing.T) {
	tok := PageEnd()
	tst.AssertEqual(t, tok.Token(), "$end")
	tst.AssertTrue(t, tok.IsEnd())
	tst.AssertFalse(t, tok.IsStart())
}

func TestPaginatedStartMode(t *testing.T) {
	tok := CTPaginated{Mode: CTMStart, Page: 0}
	tst.AssertEqual(t, tok.Token(), "$1")
	tst.AssertTrue(t, tok.IsStart())
	tst.AssertFalse(t, tok.IsEnd())
}

func TestPaginatedEndMode(t *testing.T) {
	tok := CTPaginated{Mode: CTMEnd, Page: 99}
	tst.AssertEqual(t, tok.Token(), "$end")
	tst.AssertTrue(t, tok.IsEnd())
}

func TestPaginatedRoundTrip(t *testing.T) {
	for _, page := range []int{2, 3, 7, 100, 9999} {
		tok := Page(page)
		decoded, err := Decode(tok.Token())
		tst.AssertNoErr(t, err)
		tst.AssertEqual(t, decoded.Token(), tok.Token())
	}
}