99 lines
3.1 KiB
Kotlin
99 lines
3.1 KiB
Kotlin
package cash.z.ecc.android.sdk.ext
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import cash.z.ecc.android.sdk.model.Zatoshi
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import org.junit.jupiter.api.Test
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import java.math.BigDecimal
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import java.math.MathContext
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import kotlin.test.assertEquals
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class ConversionsTest {
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@Test
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fun `default right padding is 6`() {
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assertEquals(1.13.toZec(6), Zatoshi(113000000L).convertZatoshiToZec())
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assertEquals(1.13.toZec(6), 1.13.toZec())
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}
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@Test
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fun `toZec uses banker's rounding`() {
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assertEquals("1.004", 1.0035.toZecString(3))
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assertEquals("1.004", 1.0045.toZecString(3))
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}
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@Test
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fun `toZecString defaults to 6 digits`() {
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assertEquals("1.123457", Zatoshi(112345678L).convertZatoshiToZecString())
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}
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@Test
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fun `toZecString uses banker's rounding`() {
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assertEquals("1.123456", Zatoshi(112345650L).convertZatoshiToZecString())
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}
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@Test
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fun `toZecString honors minimum digits`() {
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assertEquals("1.1000", 1.1.toZecString(6, 4))
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}
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@Test
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fun `toZecString drops trailing zeros`() {
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assertEquals("1.1", 1.10000000.toZecString(6, 0))
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}
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@Test
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fun `toZecString limits trailing zeros`() {
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assertEquals("1.10", 1.10000000.toZecString(6, 2))
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}
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@Test
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fun `toZecString hides decimal when min is zero`() {
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assertEquals("1", 1.0.toZecString(6, 0))
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}
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@Test
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fun `toZecString defaults are reasonable`() {
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// basically check for no extra zeros and banker's rounding
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assertEquals("1", 1.0000000.toZecString())
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assertEquals("0", 0.0000000.toZecString())
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assertEquals("1.01", 1.0100000.toZecString())
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assertEquals("1.000004", 1.0000035.toZecString())
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assertEquals("1.000004", 1.0000045.toZecString())
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assertEquals("1.000006", 1.0000055.toZecString())
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}
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@Test
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fun `toUsdString defaults are reasonable`() {
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// basically check for no extra zeros and banker's rounding
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assertEquals("1.00", 1.0000000.toUsdString())
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assertEquals("0", 0.0000000.toUsdString())
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assertEquals("1.01", 1.0100000.toUsdString())
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assertEquals("0.01", .0100000.toUsdString())
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assertEquals("1.02", 1.025.toUsdString())
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}
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@Test
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fun `toZecString zatoshi converts`() {
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assertEquals("1.123456", Zatoshi(112345650L).convertZatoshiToZecString(6, 0))
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}
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@Test
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fun `toZecString big decimal formats`() {
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assertEquals("1.123", BigDecimal(1.123456789).toZecString(3, 0))
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}
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@Test
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fun `toZec reduces precision`() {
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val amount = "20.37905033625433054819645404524149".safelyConvertToBigDecimal('.')
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val expected = "20.379050".safelyConvertToBigDecimal('.')
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assertEquals(expected, amount.toZec(6))
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assertEquals("20.37905", amount.toZecString(6))
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}
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@Test
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fun `convert usd to zec`() {
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val price = BigDecimal("49.07", MathContext.DECIMAL128)
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val usdValue = "1000".safelyConvertToBigDecimal('.')
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val zecValue = usdValue.convertUsdToZec(price)
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assertEquals("20.379050".safelyConvertToBigDecimal('.'), zecValue.toZec(6))
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}
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}
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