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| 1 | +package com.hexagonkt.core.converters |
| 2 | + |
| 3 | +import com.hexagonkt.core.helpers.get |
| 4 | +import com.hexagonkt.core.helpers.fail |
| 5 | +import org.junit.jupiter.api.Test |
| 6 | +import java.lang.IllegalStateException |
| 7 | +import java.net.URL |
| 8 | +import java.nio.ByteBuffer |
| 9 | +import java.time.LocalDate |
| 10 | +import java.time.LocalDateTime |
| 11 | +import java.time.LocalTime |
| 12 | +import java.util.* |
| 13 | +import kotlin.test.assertEquals |
| 14 | +import kotlin.test.assertFailsWith |
| 15 | + |
| 16 | +internal class ConvertersManagerTest { |
| 17 | + |
| 18 | + internal data class Person(val givenName: String, val familyName: String) |
| 19 | + |
| 20 | + internal data class Company( |
| 21 | + val id: String, |
| 22 | + val foundation: LocalDate, |
| 23 | + val closeTime: LocalTime, |
| 24 | + val openTime: ClosedRange<LocalTime>, |
| 25 | + val web: URL? = null, |
| 26 | + val clients: List<URL> = listOf(), |
| 27 | + val logo: ByteBuffer? = null, |
| 28 | + val notes: String? = null, |
| 29 | + val people: Set<Person> = emptySet(), |
| 30 | + val creationDate: LocalDateTime = LocalDateTime.now(), |
| 31 | + ) |
| 32 | + |
| 33 | + @Test fun `Type conversion works properly`() { |
| 34 | + ConvertersManager.register(Date::class to String::class) { it.toString() } |
| 35 | + val dateText1 = ConvertersManager.convert(Date(), String::class) |
| 36 | + val dateText2 = Date().convert(String::class) |
| 37 | + val dateText3 = Date().convert<String>() |
| 38 | + assertEquals(dateText1, dateText2) |
| 39 | + assertEquals(dateText2, dateText3) |
| 40 | + ConvertersManager.remove(Date::class to String::class) |
| 41 | + val e = assertFailsWith<IllegalStateException> { Date().convert<String>() } |
| 42 | + val source = Date::class.simpleName |
| 43 | + val target = String::class.simpleName |
| 44 | + assertEquals("No converter for $source -> $target", e.message) |
| 45 | + } |
| 46 | + |
| 47 | + @Test fun `Nested type conversion works properly`() { |
| 48 | + ConvertersManager.register(Person::class to Map::class, ::personToMap) |
| 49 | + ConvertersManager.register(Company::class to Map::class, ::companyToMap) |
| 50 | + |
| 51 | + val date = LocalDate.now() |
| 52 | + val time = LocalTime.now() |
| 53 | + val openTime = time.minusMinutes(1)..time.plusMinutes(1) |
| 54 | + |
| 55 | + Company("1", date, time, openTime).let { |
| 56 | + val m: Map<String, *> = it.convert() |
| 57 | + assertEquals("1", m[Company::id.name]) |
| 58 | + } |
| 59 | + |
| 60 | + Company("1", date, time, openTime, people = setOf(Person("John", "Smith"))).let { |
| 61 | + val m: Map<String, *> = it.convert() |
| 62 | + val persons = m[Company::people.name, 0] as? Map<*, *> ?: fail |
| 63 | + assertEquals("John", persons[Person::givenName.name]) |
| 64 | + assertEquals("Smith", persons[Person::familyName.name]) |
| 65 | + } |
| 66 | + } |
| 67 | + |
| 68 | + @Test fun `Delete non existing key don't generate errors`() { |
| 69 | + ConvertersManager.remove(Int::class to Date::class) |
| 70 | + } |
| 71 | + |
| 72 | + @Test fun usageExample() { |
| 73 | + // Define a mapper from a source type to a target type |
| 74 | + ConvertersManager.register(Date::class to String::class) { it.toString() } |
| 75 | + |
| 76 | + // Conversions can be done with different utility methods |
| 77 | + val directConversion = ConvertersManager.convert(Date(), String::class) |
| 78 | + val utilityConversion = Date().convert(String::class) |
| 79 | + val reifiedUtilityConversion = Date().convert<String>() |
| 80 | + |
| 81 | + assertEquals(directConversion, utilityConversion) |
| 82 | + assertEquals(utilityConversion, reifiedUtilityConversion) |
| 83 | + |
| 84 | + // Conversion mappers can be deleted |
| 85 | + ConvertersManager.remove(Date::class to String::class) |
| 86 | + |
| 87 | + // Trying to perform a conversion that has not a registered mapper fails with an error |
| 88 | + val e = assertFailsWith<IllegalStateException> { Date().convert<String>() } |
| 89 | + val source = Date::class.simpleName |
| 90 | + val target = String::class.simpleName |
| 91 | + assertEquals("No converter for $source -> $target", e.message) |
| 92 | + } |
| 93 | + |
| 94 | + private fun personToMap(person: Person): Map<String, *> = |
| 95 | + mapOf( |
| 96 | + "givenName" to person.givenName, |
| 97 | + "familyName" to person.familyName, |
| 98 | + ) |
| 99 | + |
| 100 | + private fun companyToMap(company: Company): Map<String, *> = |
| 101 | + mapOf( |
| 102 | + "id" to company.id, |
| 103 | + "foundation" to company.foundation, |
| 104 | + "closeTime" to company.closeTime, |
| 105 | + "openTime" to company.openTime, |
| 106 | + "web" to company.web, |
| 107 | + "clients" to company.clients, |
| 108 | + "logo" to company.logo, |
| 109 | + "notes" to company.notes, |
| 110 | + "people" to company.people.map { it.convert<Map<String, Any>>() }.toList(), |
| 111 | + "creationDate" to company.creationDate, |
| 112 | + ) |
| 113 | +} |
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