erik/cryptoprice
erik/cryptoprice
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Added toCurrency(Locale).

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This commit is contained in:
Erik C. Thauvin 2021-05-25 22:59:15 -07:00
parent 2aad45a9bd
commit 07a7198455
4 changed files with 45 additions and 30 deletions
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15
src/main/kotlin/net/thauvin/erik/crypto/CryptoPrice.kt
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@ -41,6 +41,7 @@ import java.io.IOException
import java.text.NumberFormat
import java.time.LocalDate
import java.util.Currency
import java.util.Locale
/**
* A small Kotlin/Java library for retrieving cryptocurrencies current market prices.
@ -68,7 +69,7 @@ open class CryptoPrice(val base: String, val currency: String, val amount: Doubl
throw CryptoException(message = "Missing price data.")
}
} catch (e: NumberFormatException) {
throw CryptoException(message = "Could not convert price data to number.", cause = e)
throw CryptoException(message = "Could not convert amount to number.", cause = e)
} catch (e: JSONException) {
throw CryptoException(message = "Could not parse price data.", cause = e)
}
@ -113,9 +114,9 @@ open class CryptoPrice(val base: String, val currency: String, val amount: Doubl
@JvmStatic
fun main(args: Array<String>) {
listOf("BTC", "BCH", "BSV", "ETH", "ETH2", "ETC").forEach {
args.forEach {
with(marketPrice(it)) {
println("$base: $amount")
println("$base:\t" + "%10s".format(toCurrency()))
}
}
}
@ -132,17 +133,17 @@ open class CryptoPrice(val base: String, val currency: String, val amount: Doubl
@Throws(CryptoException::class, IOException::class)
fun marketPrice(base: String, currency: String = "USD", date: LocalDate? = null): CryptoPrice {
val params = if (date != null) mapOf("date" to "$date") else emptyMap()
val body = apiCall(listOf("prices", "$base-$currency", "spot"), params)
return body.toPrice()
return apiCall(listOf("prices", "$base-$currency", "spot"), params).toPrice()
}
}
/**
* Return the [amount] as a currency formatted string. (eg: $1,203.33)
*/
@JvmOverloads
@Throws(IllegalArgumentException::class)
fun toCurrency(): String {
return NumberFormat.getCurrencyInstance().let {
fun toCurrency(locale: Locale = Locale.getDefault(Locale.Category.FORMAT)): String {
return NumberFormat.getCurrencyInstance(locale).let {
it.setCurrency(Currency.getInstance(currency))
it.format(amount)
}

53
src/test/kotlin/net/thauvin/erik/crypto/CryptoPriceTest.kt
View file

@ -4,6 +4,7 @@ import net.thauvin.erik.crypto.CryptoPrice.Companion.apiCall
import net.thauvin.erik.crypto.CryptoPrice.Companion.marketPrice
import net.thauvin.erik.crypto.CryptoPrice.Companion.toPrice
import java.time.LocalDate
import java.util.Locale
import kotlin.test.Test
import kotlin.test.assertEquals
import kotlin.test.assertFailsWith
@ -17,8 +18,8 @@ class CryptoPriceTest {
@Throws(CryptoException::class)
fun testBTCPrice() {
val price = marketPrice("BTC")
assertEquals(price.base, "BTC", "BTC")
assertEquals(price.currency, "USD", "is USD")
assertEquals("BTC", price.base, "BTC")
assertEquals("USD", price.currency, "is USD")
assertTrue(price.amount > 0.00, "BTC > 0")
}
@ -26,8 +27,8 @@ class CryptoPriceTest {
@Throws(CryptoException::class)
fun testETHPrice() {
val price = marketPrice("ETH", "EUR")
assertEquals(price.base, "ETH", "ETH")
assertEquals(price.currency, "EUR", "is EUR")
assertEquals("ETH", price.base, "ETH")
assertEquals("EUR", price.currency, "is EUR")
assertTrue(price.amount > 0.00, "ETH > 0")
}
@ -35,8 +36,8 @@ class CryptoPriceTest {
@Throws(CryptoException::class)
fun testETH2Price() {
val price = marketPrice("ETH2", "GBP")
assertEquals(price.base, "ETH2", "ETH2")
assertEquals(price.currency, "GBP", "is GBP")
assertEquals("ETH2", price.base, "ETH2")
assertEquals("GBP", price.currency, "is GBP")
assertTrue(price.amount > 0.00, "GBP > 0")
}
@ -44,8 +45,8 @@ class CryptoPriceTest {
@Throws(CryptoException::class)
fun testBCHPrice() {
val price = marketPrice("BCH", "GBP", LocalDate.now().minusDays(1))
assertEquals(price.base, "BCH", "BCH")
assertEquals(price.currency, "GBP", "is GBP")
assertEquals("BCH", price.base, "BCH")
assertEquals("GBP", price.currency, "is GBP")
assertTrue(price.amount > 0.00, "BCH > 0")
}
@ -53,8 +54,8 @@ class CryptoPriceTest {
@Throws(CryptoException::class)
fun testApiCall() {
val price = apiCall(listOf("prices", "BTC-USD", "buy"), emptyMap()).toPrice()
assertEquals(price.base, "BTC", "buy BTC")
assertEquals(price.currency, "USD", "buy BTC is USD")
assertEquals("BTC", price.base, "buy BTC")
assertEquals("USD", price.currency, "buy BTC is USD")
assertTrue(price.amount > 0.00, "buy BTC > 0")
}
@ -83,14 +84,24 @@ class CryptoPriceTest {
@Test
@Throws(IllegalArgumentException::class)
fun testToCurrency() {
val eur = CryptoPrice("BTC", "EUR", 12345.67)
assertEquals(eur.toCurrency(), "€12,345.67", "EUR format")
val gbp = CryptoPrice("ETH", "GBP", 12345.67)
assertEquals(gbp.toCurrency(), "£12,345.67", "GBP format")
val aud = CryptoPrice("BTC", "AUD", 12345.67)
assertEquals(aud.toCurrency(), "A$12,345.67", "AUD format")
val d = 12345.67
val usd = CryptoPrice("BTC", "USD", d)
assertEquals("$12,345.67", usd.toCurrency(), "EUR format")
val eur = CryptoPrice("BTC", "EUR", d)
assertEquals("€12,345.67", eur.toCurrency(), "EUR format")
val gbp = CryptoPrice("ETH", "GBP", d)
assertEquals("£12,345.67", gbp.toCurrency(), "GBP format")
val aud = CryptoPrice("BTC", "AUD", d)
assertEquals("A$12,345.67", aud.toCurrency(), "AUD format")
val fr = CryptoPrice("BTC", "EUR", d)
assertEquals("12 345,67 €", fr.toCurrency(Locale.FRANCE), "EUR-FR format")
val jp = CryptoPrice("BTC", "JPY", d)
assertEquals("￥12,346", jp.toCurrency(Locale.JAPAN), "EUR-JPY format")
}
@Test
@ -99,9 +110,9 @@ class CryptoPriceTest {
val d = 57515.69
val json = "{\"data\":{\"base\":\"BTC\",\"currency\":\"USD\",\"amount\":\"$d\"}}"
val price = json.toPrice()
assertEquals(price.base, "BTC", "base is BTC")
assertEquals(price.currency, "USD", "currency is USD")
assertEquals(price.amount, d, "amount is 57515.69")
assertEquals("BTC", price.base, "base is BTC")
assertEquals("USD", price.currency, "currency is USD")
assertEquals(d, price.amount, "amount is 57515.69")
assertFailsWith(
message = "double conversion did not fail",