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Diffstat (limited to 'wallet/src/commonTest/kotlin/net/taler/wallet/kotlin/AmountTest.kt')
| -rw-r--r-- | wallet/src/commonTest/kotlin/net/taler/wallet/kotlin/AmountTest.kt | 276 |
1 files changed, 276 insertions, 0 deletions
diff --git a/wallet/src/commonTest/kotlin/net/taler/wallet/kotlin/AmountTest.kt b/wallet/src/commonTest/kotlin/net/taler/wallet/kotlin/AmountTest.kt new file mode 100644 index 0000000..08ee618 --- /dev/null +++ b/wallet/src/commonTest/kotlin/net/taler/wallet/kotlin/AmountTest.kt @@ -0,0 +1,276 @@ +/* + * This file is part of GNU Taler + * (C) 2020 Taler Systems S.A. + * + * GNU Taler is free software; you can redistribute it and/or modify it under the + * terms of the GNU General Public License as published by the Free Software + * Foundation; either version 3, or (at your option) any later version. + * + * GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY + * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR + * A PARTICULAR PURPOSE. See the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along with + * GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/> + */ + +package net.taler.wallet.kotlin + +import kotlin.random.Random +import kotlin.test.Test +import kotlin.test.assertEquals +import kotlin.test.assertFalse +import kotlin.test.assertTrue +import kotlin.test.fail + +class AmountTest { + + companion object { + private val charPool: List<Char> = ('a'..'z') + ('A'..'Z') + ('0'..'9') + fun getRandomString(minLength: Int = 1, maxLength: Int = Random.nextInt(0, 1337)) = (minLength..maxLength) + .map { Random.nextInt(0, charPool.size) } + .map(charPool::get) + .joinToString("") + + fun getRandomAmount() = getRandomAmount(getRandomString(1, Random.nextInt(1, 12))) + + fun getRandomAmount(currency: String): Amount { + val value = Random.nextLong(0, Amount.MAX_VALUE) + val fraction = Random.nextInt(0, Amount.MAX_FRACTION) + return Amount(currency, value, fraction) + } + } + + @Test + fun testFromJSONString() { + var str = "TESTKUDOS:23.42" + var amount = Amount.fromJSONString(str) + assertEquals(str, amount.toJSONString()) + assertEquals("TESTKUDOS", amount.currency) + assertEquals(23, amount.value) + assertEquals((0.42 * 1e8).toInt(), amount.fraction) + assertEquals("23.42 TESTKUDOS", amount.toString()) + + str = "EUR:500000000.00000001" + amount = Amount.fromJSONString(str) + assertEquals(str, amount.toJSONString()) + assertEquals("EUR", amount.currency) + assertEquals(500000000, amount.value) + assertEquals(1, amount.fraction) + assertEquals("500000000.00000001 EUR", amount.toString()) + + str = "EUR:1500000000.00000003" + amount = Amount.fromJSONString(str) + assertEquals(str, amount.toJSONString()) + assertEquals("EUR", amount.currency) + assertEquals(1500000000, amount.value) + assertEquals(3, amount.fraction) + assertEquals("1500000000.00000003 EUR", amount.toString()) + } + + @Test + fun testFromJSONStringAcceptsMaxValuesRejectsAbove() { + val maxValue = 4503599627370496 + val str = "TESTKUDOS123:$maxValue.99999999" + val amount = Amount.fromJSONString(str) + assertEquals(str, amount.toJSONString()) + assertEquals("TESTKUDOS123", amount.currency) + assertEquals(maxValue, amount.value) + assertEquals("$maxValue.99999999 TESTKUDOS123", amount.toString()) + + // longer currency not accepted + assertThrows<AmountParserException>("longer currency was accepted") { + Amount.fromJSONString("TESTKUDOS1234:$maxValue.99999999") + } + + // max value + 1 not accepted + assertThrows<AmountParserException>("max value + 1 was accepted") { + Amount.fromJSONString("TESTKUDOS123:${maxValue + 1}.99999999") + } + + // max fraction + 1 not accepted + assertThrows<AmountParserException>("max fraction + 1 was accepted") { + Amount.fromJSONString("TESTKUDOS123:$maxValue.999999990") + } + } + + @Test + fun testFromJSONStringRejections() { + assertThrows<AmountParserException> { + Amount.fromJSONString("TESTKUDOS:0,5") + } + assertThrows<AmountParserException> { + Amount.fromJSONString("+TESTKUDOS:0.5") + } + assertThrows<AmountParserException> { + Amount.fromJSONString("0.5") + } + assertThrows<AmountParserException> { + Amount.fromJSONString(":0.5") + } + assertThrows<AmountParserException> { + Amount.fromJSONString("EUR::0.5") + } + assertThrows<AmountParserException> { + Amount.fromJSONString("EUR:.5") + } + } + + @Test + fun testAddition() { + assertEquals( + Amount.fromJSONString("EUR:2"), + Amount.fromJSONString("EUR:1") + Amount.fromJSONString("EUR:1") + ) + assertEquals( + Amount.fromJSONString("EUR:3"), + Amount.fromJSONString("EUR:1.5") + Amount.fromJSONString("EUR:1.5") + ) + assertEquals( + Amount.fromJSONString("EUR:500000000.00000002"), + Amount.fromJSONString("EUR:500000000.00000001") + Amount.fromJSONString("EUR:0.00000001") + ) + assertThrows<AmountOverflowException>("addition didn't overflow") { + Amount.fromJSONString("EUR:4503599627370496.99999999") + Amount.fromJSONString("EUR:0.00000001") + } + assertThrows<AmountOverflowException>("addition didn't overflow") { + Amount.fromJSONString("EUR:4000000000000000") + Amount.fromJSONString("EUR:4000000000000000") + } + } + + @Test + fun testTimes() { + assertEquals( + Amount.fromJSONString("EUR:2"), + Amount.fromJSONString("EUR:2") * 1 + ) + assertEquals( + Amount.fromJSONString("EUR:2"), + Amount.fromJSONString("EUR:1") * 2 + ) + assertEquals( + Amount.fromJSONString("EUR:4.5"), + Amount.fromJSONString("EUR:1.5") * 3 + ) + assertEquals(Amount.fromJSONString("EUR:0"), Amount.fromJSONString("EUR:1.11") * 0) + assertEquals(Amount.fromJSONString("EUR:1.11"), Amount.fromJSONString("EUR:1.11") * 1) + assertEquals(Amount.fromJSONString("EUR:2.22"), Amount.fromJSONString("EUR:1.11") * 2) + assertEquals(Amount.fromJSONString("EUR:3.33"), Amount.fromJSONString("EUR:1.11") * 3) + assertEquals(Amount.fromJSONString("EUR:4.44"), Amount.fromJSONString("EUR:1.11") * 4) + assertEquals(Amount.fromJSONString("EUR:5.55"), Amount.fromJSONString("EUR:1.11") * 5) + assertEquals( + Amount.fromJSONString("EUR:1500000000.00000003"), + Amount.fromJSONString("EUR:500000000.00000001") * 3 + ) + assertThrows<AmountOverflowException>("times didn't overflow") { + Amount.fromJSONString("EUR:4000000000000000") * 2 + } + } + + @Test + fun testSubtraction() { + assertEquals( + Amount.fromJSONString("EUR:0"), + Amount.fromJSONString("EUR:1") - Amount.fromJSONString("EUR:1") + ) + assertEquals( + Amount.fromJSONString("EUR:1.5"), + Amount.fromJSONString("EUR:3") - Amount.fromJSONString("EUR:1.5") + ) + assertEquals( + Amount.fromJSONString("EUR:500000000.00000001"), + Amount.fromJSONString("EUR:500000000.00000002") - Amount.fromJSONString("EUR:0.00000001") + ) + assertThrows<AmountOverflowException>("subtraction didn't underflow") { + Amount.fromJSONString("EUR:23.42") - Amount.fromJSONString("EUR:42.23") + } + assertThrows<AmountOverflowException>("subtraction didn't underflow") { + Amount.fromJSONString("EUR:0.5") - Amount.fromJSONString("EUR:0.50000001") + } + } + + @Test + fun testIsZero() { + assertTrue(Amount.zero("EUR").isZero()) + assertTrue(Amount.fromJSONString("EUR:0").isZero()) + assertTrue(Amount.fromJSONString("EUR:0.0").isZero()) + assertTrue(Amount.fromJSONString("EUR:0.00000").isZero()) + assertTrue((Amount.fromJSONString("EUR:1.001") - Amount.fromJSONString("EUR:1.001")).isZero()) + + assertFalse(Amount.fromJSONString("EUR:0.00000001").isZero()) + assertFalse(Amount.fromJSONString("EUR:1.0").isZero()) + assertFalse(Amount.fromJSONString("EUR:0001.0").isZero()) + } + + @Test + fun testComparision() { + assertTrue(Amount.fromJSONString("EUR:0") <= Amount.fromJSONString("EUR:0")) + assertTrue(Amount.fromJSONString("EUR:0") <= Amount.fromJSONString("EUR:0.00000001")) + assertTrue(Amount.fromJSONString("EUR:0") < Amount.fromJSONString("EUR:0.00000001")) + assertTrue(Amount.fromJSONString("EUR:0") < Amount.fromJSONString("EUR:1")) + assertEquals(Amount.fromJSONString("EUR:0"), Amount.fromJSONString("EUR:0")) + assertEquals(Amount.fromJSONString("EUR:42"), Amount.fromJSONString("EUR:42")) + assertEquals(Amount.fromJSONString("EUR:42.00000001"), Amount.fromJSONString("EUR:42.00000001")) + assertTrue(Amount.fromJSONString("EUR:42.00000001") >= Amount.fromJSONString("EUR:42.00000001")) + assertTrue(Amount.fromJSONString("EUR:42.00000002") >= Amount.fromJSONString("EUR:42.00000001")) + assertTrue(Amount.fromJSONString("EUR:42.00000002") > Amount.fromJSONString("EUR:42.00000001")) + assertTrue(Amount.fromJSONString("EUR:0.00000002") > Amount.fromJSONString("EUR:0.00000001")) + assertTrue(Amount.fromJSONString("EUR:0.00000001") > Amount.fromJSONString("EUR:0")) + assertTrue(Amount.fromJSONString("EUR:2") > Amount.fromJSONString("EUR:1")) + + assertThrows<IllegalStateException>("could compare amounts with different currencies") { + Amount.fromJSONString("EUR:0.5") < Amount.fromJSONString("USD:0.50000001") + } + } + + @Test + fun testToByteArray() { + val vectors = listOf( + Pair("ceicWVf9GhJ:3902026702525079.40496378", "006XSQV3G899E0K9XKX66SB9CDBNCSHS8XM4M00"), + Pair("asYDLuK2A:3800267550024600.02072907", "006R0MNXBVHSG00ZM55P2WTS8H67AJSJ8400000"), + Pair("pV1m:1347558259914570.09786232", "002CK66VCNVMM04NADW70NHHDM0000000000000"), + Pair("geO82l:553744321840253.41004983", "000ZF855K627T0KHNYVPESAF70S6R0000000000"), + Pair("B9bWK7WPEO:3663912678613976.12122563", "006G8KS5P9HXG05RZ71M4EB2AX5KENTG8N7G000"), + Pair("X:1537372109907438.77850768", "002QCETPFYJYW153X285G000000000000000000"), + Pair("5:4271492725553118.39728399", "007JSSK6J4VXW0JY6M7KA000000000000000000"), + Pair("OSdV:801656289790342.08256189", "001DJ6H6CA4RC03XZAYMYMV4AR0000000000000"), + Pair("Y6:2908617536334646.94126271", "0055AQTB19NKC1CW82ZNJDG0000000000000000"), + Pair("kSHoOZj:2610656582865206.00292046", "004MCR6T828KC004EK76PMT8DX7NMTG00000000"), + Pair("GkhLXrlGES:4246330707533398.83874252", "007HC0Z9DFF5C17ZT764ETV89HC74V278N9G000"), + Pair("CNS09:738124490298524.71259462", "0019YMG01DA9R11ZAN346KJK60WG00000000000"), + Pair("sw0b1tKXZym:2132978464977419.28199478", "003S7VNZPZS0P0DE98V76XSGC8RQ8JTRB9WPT00"), + Pair("fC:1275322307696988.17178522", "0028FSGX3ZCNR0863YD6CGR0000000000000000"), + Pair("cRai6j:166032749022734.69444771", "0009E0C30V70W113MJHP6MK1D4V6M0000000000"), + Pair("KOADwTb3:3932974019564218.48282023", "006ZJ16ZB39BM0Q0Q6KMPKT18HVN8RHK0000000"), + Pair("9Fi9wcLgDe:1268366772151214.97268853", "002834N6WRHTW1EC6HTKJHK975VP6K378HJG000"), + Pair("SDN:3370670470236379.88943272", "005ZK6V0124DP1AD5AM56H2E000000000000000"), + Pair("zGCP5V:4010014441349620.76121145", "0073Y5HYA8GZ8149GGWQMHT3A0TNC0000000000"), + Pair("VsW1JjBLn:2037070181191907.99717275", "003KSD2WH18E61FHJ2DNCWTQ6556MGJCDR00000"), + Pair("A:1806895799429502.00887758", "0036PQ5P8NMQW00DHF742000000000000000000"), + Pair("njA8:4015261148004966.43708687", "00747PYPD116C0MTY47PWTJ1700000000000000"), + Pair("Bwq:3562876074139250.28829179", "006AGTNTRWF740DQWQXM4XVH000000000000000"), + Pair("8e75v8:3716241006992995.95213823", "006K7SP93WF661DCV3ZKGS9Q6NV3G0000000000"), + Pair("XrnbQTTn:3887603772953949.94721267", "006WZGA9X8ANT1D5AKSNGWKEC98N8N3E0000000"), + Pair("MIN:0.00000001", "0000000000000000000MTJAE000000000000000"), + Pair("MAX:4503599627370496.99999999", "00800000000001FNW3ZMTGAR000000000000000") + ) + for (v in vectors) { + val amount = Amount.fromJSONString(v.first) + val encodedBytes = Base32Crockford.encode(amount.toByteArray()) + assertEquals(v.second, encodedBytes) + } + } + + private inline fun <reified T : Throwable> assertThrows( + msg: String? = null, + function: () -> Any + ) { + try { + function.invoke() + fail(msg) + } catch (e: Exception) { + assertTrue(e is T) + } + } + +} |