Evgeny Gerashchenko
38 lines
1.0 KiB
Kotlin
38 lines
1.0 KiB
Kotlin
package testPackage
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import java.util.Collections
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import java.util.ArrayList
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import kotlin.test.*
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import org.junit.Test as test
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fun <T> List<T>.toArrayList() = this.toCollection(ArrayList<T>())
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class JavautilCollectionsTest {
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val TEST_LIST = array(2, 0, 9, 7, 1).toList()
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val SORTED_TEST_LIST = array(0, 1, 2, 7, 9).toList()
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val MAX_ELEMENT = 9
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val COMPARATOR = comparator { (x: Int, y: Int) -> if (x > y) 1 else if (x < y) -1 else 0 }
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test fun maxWithComparator() {
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assertEquals(MAX_ELEMENT, Collections.max(TEST_LIST, COMPARATOR))
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}
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test fun sort() {
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val list = TEST_LIST.toArrayList()
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Collections.sort(list)
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assertEquals(SORTED_TEST_LIST, list)
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}
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test fun sortWithComparator() {
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val list = TEST_LIST.toArrayList()
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Collections.sort(list, COMPARATOR)
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assertEquals(SORTED_TEST_LIST, list)
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}
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test fun collectionToArray() {
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val array = TEST_LIST.copyToArray()
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assertEquals(array.toList(), TEST_LIST)
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}
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}
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