package common

import (
	"math/big"

	checker "gopkg.in/check.v1"
)

type SizeSuite struct{}

var _ = checker.Suite(&SizeSuite{})

func (s *SizeSuite) TestStorageSizeString(c *checker.C) {
	data1 := 2381273
	data2 := 2192
	data3 := 12

	exp1 := "2.38 mB"
	exp2 := "2.19 kB"
	exp3 := "12.00 B"

	c.Assert(StorageSize(data1).String(), checker.Equals, exp1)
	c.Assert(StorageSize(data2).String(), checker.Equals, exp2)
	c.Assert(StorageSize(data3).String(), checker.Equals, exp3)
}

func (s *CommonSuite) TestCommon(c *checker.C) {
	douglas := CurrencyToString(BigPow(10, 43))
	einstein := CurrencyToString(BigPow(10, 22))
	ether := CurrencyToString(BigPow(10, 19))
	finney := CurrencyToString(BigPow(10, 16))
	szabo := CurrencyToString(BigPow(10, 13))
	shannon := CurrencyToString(BigPow(10, 10))
	babbage := CurrencyToString(BigPow(10, 7))
	ada := CurrencyToString(BigPow(10, 4))
	wei := CurrencyToString(big.NewInt(10))

	c.Assert(douglas, checker.Equals, "10 Douglas")
	c.Assert(einstein, checker.Equals, "10 Einstein")
	c.Assert(ether, checker.Equals, "10 Ether")
	c.Assert(finney, checker.Equals, "10 Finney")
	c.Assert(szabo, checker.Equals, "10 Szabo")
	c.Assert(shannon, checker.Equals, "10 Shannon")
	c.Assert(babbage, checker.Equals, "10 Babbage")
	c.Assert(ada, checker.Equals, "10 Ada")
	c.Assert(wei, checker.Equals, "10 Wei")
}

func (s *CommonSuite) TestLarge(c *checker.C) {
	douglaslarge := CurrencyToString(BigPow(100000000, 43))
	adalarge := CurrencyToString(BigPow(100000000, 4))
	weilarge := CurrencyToString(big.NewInt(100000000))

	c.Assert(douglaslarge, checker.Equals, "10000E298 Douglas")
	c.Assert(adalarge, checker.Equals, "10000E7 Einstein")
	c.Assert(weilarge, checker.Equals, "100 Babbage")
}
