util/src/test/kotlin/AmountTest.kt


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import io.ktor.util.reflect.*
import org.junit.Test
import tech.libeufin.sandbox.roundToTwoDigits
import tech.libeufin.util.isAmountZero
import tech.libeufin.util.parseAmount
import tech.libeufin.util.validatePlainAmount
import java.math.BigDecimal
import kotlin.reflect.typeOf

inline fun <reified ExceptionType> assertException(block: () -> Unit) {
    try {
        block()
    } catch (e: Throwable) {
        assert(e.javaClass == ExceptionType::class.java)
        return
    }
    return assert(false)
}
class AmountTest {
    @Test
    fun equalTest() {
        assert(isAmountZero(BigDecimal("-0000000000.0000000000")))
        assert(!isAmountZero(BigDecimal("1")))
        assert(isAmountZero(BigDecimal("0.00")))
        assert(isAmountZero(BigDecimal("0")))
        assert(!isAmountZero(BigDecimal("00000000000001")))
        assert(!isAmountZero(BigDecimal("-1.00000000")))
    }

    @Test
    fun parse() {
        var res = parseAmount("KUDOS:5.5")
        assert(res.amount == "5.5")
        assert(res.currency == "KUDOS")
        assert(validatePlainAmount("1.0"))
        assert(validatePlainAmount("1.00"))
        assert(!validatePlainAmount("1.000"))
        res = parseAmount("TESTKUDOS:1.11")
        assert(res.amount == "1.11")
        assert(res.currency == "TESTKUDOS")
        assertException<UtilError> { parseAmount("TESTKUDOS:1.") }
        assertException<UtilError> { parseAmount("TESTKUDOS:.1") }
        assertException<UtilError> { parseAmount("TESTKUDOS:1.000") }
        assertException<UtilError> { parseAmount("TESTKUDOS:1..") }
    }
}