Ilya Gorbunov
406 lines
19 KiB
Kotlin
406 lines
19 KiB
Kotlin
package test.collections
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import kotlin.test.assertEquals
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import kotlin.test.assertFalse
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import kotlin.test.assertTrue
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import kotlin.test.expect
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import org.junit.Test as test
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fun <T> assertArrayNotSameButEquals(expected: Array<out T>, actual: Array<out T>, message: String = "") { assertTrue(expected !== actual, message); assertEquals(expected.toList(), actual.toList(), message) }
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fun assertArrayNotSameButEquals(expected: IntArray, actual: IntArray, message: String = "") { assertTrue(expected !== actual, message); assertEquals(expected.toList(), actual.toList(), message) }
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fun assertArrayNotSameButEquals(expected: LongArray, actual: LongArray, message: String = "") { assertTrue(expected !== actual, message); assertEquals(expected.toList(), actual.toList(), message) }
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fun assertArrayNotSameButEquals(expected: ShortArray, actual: ShortArray, message: String = "") { assertTrue(expected !== actual, message); assertEquals(expected.toList(), actual.toList(), message) }
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fun assertArrayNotSameButEquals(expected: ByteArray, actual: ByteArray, message: String = "") { assertTrue(expected !== actual, message); assertEquals(expected.toList(), actual.toList(), message) }
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fun assertArrayNotSameButEquals(expected: DoubleArray, actual: DoubleArray, message: String = "") { assertTrue(expected !== actual, message); assertEquals(expected.toList(), actual.toList(), message) }
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fun assertArrayNotSameButEquals(expected: FloatArray, actual: FloatArray, message: String = "") { assertTrue(expected !== actual, message); assertEquals(expected.toList(), actual.toList(), message) }
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fun assertArrayNotSameButEquals(expected: CharArray, actual: CharArray, message: String = "") { assertTrue(expected !== actual, message); assertEquals(expected.toList(), actual.toList(), message) }
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fun assertArrayNotSameButEquals(expected: BooleanArray, actual: BooleanArray, message: String = "") { assertTrue(expected !== actual, message); assertEquals(expected.toList(), actual.toList(), message) }
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class ArraysTest {
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test fun emptyArrayLastIndex() {
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val arr1 = IntArray(0)
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assertEquals(-1, arr1.lastIndex)
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val arr2 = emptyArray<String>()
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assertEquals(-1, arr2.lastIndex)
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}
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test fun arrayLastIndex() {
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val arr1 = intArrayOf(0, 1, 2, 3, 4)
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assertEquals(4, arr1.lastIndex)
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assertEquals(4, arr1[arr1.lastIndex])
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val arr2 = Array<String>(5, { "$it" })
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assertEquals(4, arr2.lastIndex)
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assertEquals("4", arr2[arr2.lastIndex])
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}
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test fun byteArray() {
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val arr = ByteArray(2)
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val expected: Byte = 0
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assertEquals(arr.size(), 2)
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assertEquals(expected, arr[0])
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assertEquals(expected, arr[1])
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}
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test fun shortArray() {
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val arr = ShortArray(2)
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val expected: Short = 0
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assertEquals(arr.size(), 2)
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assertEquals(expected, arr[0])
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assertEquals(expected, arr[1])
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}
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test fun intArray() {
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val arr = IntArray(2)
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assertEquals(arr.size(), 2)
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assertEquals(0, arr[0])
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assertEquals(0, arr[1])
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}
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test fun longArray() {
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val arr = LongArray(2)
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val expected: Long = 0
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assertEquals(arr.size(), 2)
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assertEquals(expected, arr[0])
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assertEquals(expected, arr[1])
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}
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test fun floatArray() {
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val arr = FloatArray(2)
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val expected: Float = 0.0.toFloat()
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assertEquals(arr.size(), 2)
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assertEquals(expected, arr[0])
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assertEquals(expected, arr[1])
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}
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test fun doubleArray() {
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val arr = DoubleArray(2)
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assertEquals(arr.size(), 2)
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assertEquals(0.0, arr[0])
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assertEquals(0.0, arr[1])
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}
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test fun charArray() {
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val arr = CharArray(2)
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val expected: Char = '\u0000'
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assertEquals(arr.size(), 2)
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assertEquals(expected, arr[0])
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assertEquals(expected, arr[1])
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}
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test fun booleanArray() {
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val arr = BooleanArray(2)
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assertEquals(arr.size(), 2)
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assertEquals(false, arr[0])
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assertEquals(false, arr[1])
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}
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test fun min() {
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expect(null, { arrayOf<Int>().min() })
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expect(1, { arrayOf(1).min() })
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expect(2, { arrayOf(2, 3).min() })
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expect(2000000000000, { arrayOf(3000000000000, 2000000000000).min() })
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expect('a', { arrayOf('a', 'b').min() })
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expect("a", { arrayOf("a", "b").min() })
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}
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test fun max() {
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expect(null, { arrayOf<Int>().max() })
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expect(1, { arrayOf(1).max() })
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expect(3, { arrayOf(2, 3).max() })
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expect(3000000000000, { arrayOf(3000000000000, 2000000000000).max() })
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expect('b', { arrayOf('a', 'b').max() })
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expect("b", { arrayOf("a", "b").max() })
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}
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test fun minBy() {
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expect(null, { arrayOf<Int>().minBy { it } })
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expect(1, { arrayOf(1).minBy { it } })
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expect(3, { arrayOf(2, 3).minBy { -it } })
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expect('a', { arrayOf('a', 'b').minBy { "x$it" } })
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expect("b", { arrayOf("b", "abc").minBy { it.length() } })
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}
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test fun maxBy() {
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expect(null, { arrayOf<Int>().maxBy { it } })
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expect(1, { arrayOf(1).maxBy { it } })
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expect(2, { arrayOf(2, 3).maxBy { -it } })
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expect('b', { arrayOf('a', 'b').maxBy { "x$it" } })
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expect("abc", { arrayOf("b", "abc").maxBy { it.length() } })
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}
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test fun minByEvaluateOnce() {
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var c = 0
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expect(1, { arrayOf(5, 4, 3, 2, 1).minBy { c++; it * it } })
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assertEquals(5, c)
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}
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test fun maxByEvaluateOnce() {
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var c = 0
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expect(5, { arrayOf(5, 4, 3, 2, 1).maxBy { c++; it * it } })
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assertEquals(5, c)
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}
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test fun sum() {
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expect(0) { arrayOf<Int>().sum() }
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expect(14) { arrayOf(2, 3, 9).sum() }
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expect(3.0) { arrayOf(1.0, 2.0).sum() }
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expect(200) { arrayOf<Byte>(100, 100).sum() }
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expect(50000) { arrayOf<Short>(20000, 30000).sum() }
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expect(3000000000000) { arrayOf<Long>(1000000000000, 2000000000000).sum() }
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expect(3.0.toFloat()) { arrayOf<Float>(1.0.toFloat(), 2.0.toFloat()).sum() }
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}
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test fun average() {
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expect(0.0) { arrayOf<Int>().average() }
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expect(3.8) { arrayOf(1, 2, 5, 8, 3).average() }
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expect(2.1) { arrayOf(1.6, 2.6, 3.6, 0.6).average() }
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expect(100.0) { arrayOf<Byte>(100, 100, 100, 100, 100, 100).average() }
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expect(0) { arrayOf<Short>(1, -1, 2, -2, 3, -3).average().toShort() }
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// TODO: Property based tests
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// for each arr with size 1 arr.average() == arr[0]
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// for each arr with size > 0 arr.average() = arr.sum().toDouble() / arr.size()
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}
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test fun indexOf() {
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expect(-1) { arrayOf("cat", "dog", "bird").indexOf("mouse") }
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expect(0) { arrayOf("cat", "dog", "bird").indexOf("cat") }
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expect(1) { arrayOf("cat", "dog", "bird").indexOf("dog") }
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expect(2) { arrayOf("cat", "dog", "bird").indexOf("bird") }
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expect(0) { arrayOf(null, "dog", null).indexOf(null : String?)}
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expect(-1) { arrayOf("cat", "dog", "bird").indexOfFirst { it.contains("p") } }
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expect(0) { arrayOf("cat", "dog", "bird").indexOfFirst { it.startsWith('c') } }
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expect(1) { arrayOf("cat", "dog", "bird").indexOfFirst { it.startsWith('d') } }
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expect(2) { arrayOf("cat", "dog", "bird").indexOfFirst { it.endsWith('d') } }
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expect(-1) { sequenceOf("cat", "dog", "bird").indexOfFirst { it.contains("p") } }
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expect(0) { sequenceOf("cat", "dog", "bird").indexOfFirst { it.startsWith('c') } }
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expect(1) { sequenceOf("cat", "dog", "bird").indexOfFirst { it.startsWith('d') } }
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expect(2) { sequenceOf("cat", "dog", "bird").indexOfFirst { it.endsWith('d') } }
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}
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test fun lastIndexOf() {
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expect(-1) { arrayOf("cat", "dog", "bird").lastIndexOf("mouse") }
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expect(0) { arrayOf("cat", "dog", "bird").lastIndexOf("cat") }
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expect(1) { arrayOf("cat", "dog", "bird").lastIndexOf("dog") }
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expect(2) { arrayOf(null, "dog", null).lastIndexOf(null : String?)}
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expect(3) { arrayOf("cat", "dog", "bird", "dog").lastIndexOf("dog") }
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expect(-1) { arrayOf("cat", "dog", "bird").indexOfLast { it.contains("p") } }
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expect(0) { arrayOf("cat", "dog", "bird").indexOfLast { it.startsWith('c') } }
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expect(2) { arrayOf("cat", "dog", "cap", "bird").indexOfLast { it.startsWith('c') } }
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expect(2) { arrayOf("cat", "dog", "bird").indexOfLast { it.endsWith('d') } }
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expect(3) { arrayOf("cat", "dog", "bird", "red").indexOfLast { it.endsWith('d') } }
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expect(-1) { sequenceOf("cat", "dog", "bird").indexOfLast { it.contains("p") } }
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expect(0) { sequenceOf("cat", "dog", "bird").indexOfLast { it.startsWith('c') } }
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expect(2) { sequenceOf("cat", "dog", "cap", "bird").indexOfLast { it.startsWith('c') } }
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expect(2) { sequenceOf("cat", "dog", "bird").indexOfLast { it.endsWith('d') } }
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expect(3) { sequenceOf("cat", "dog", "bird", "red").indexOfLast { it.endsWith('d') } }
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}
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test fun plus() {
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assertEquals(listOf("1", "2", "3", "4"), listOf("1", "2") + arrayOf("3", "4"))
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assertArrayNotSameButEquals(arrayOf("1", "2", "3"), arrayOf("1", "2") + "3")
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assertArrayNotSameButEquals(arrayOf("1", "2", "3", "4"), arrayOf("1", "2") + arrayOf("3", "4"))
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assertArrayNotSameButEquals(arrayOf("1", "2", "3", "4"), arrayOf("1", "2") + listOf("3", "4"))
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assertArrayNotSameButEquals(intArrayOf(1, 2, 3), intArrayOf(1, 2) + 3)
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assertArrayNotSameButEquals(intArrayOf(1, 2, 3, 4), intArrayOf(1, 2) + listOf(3, 4))
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assertArrayNotSameButEquals(intArrayOf(1, 2, 3, 4), intArrayOf(1, 2) + intArrayOf(3, 4))
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}
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test fun plusVararg() {
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fun stringOnePlus(vararg a: String) = arrayOf("1") + a
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fun longOnePlus(vararg a: Long) = longArrayOf(1) + a
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fun intOnePlus(vararg a: Int) = intArrayOf(1) + a
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assertArrayNotSameButEquals(arrayOf("1", "2"), stringOnePlus("2"), "Array.plus")
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assertArrayNotSameButEquals(intArrayOf(1, 2), intOnePlus(2), "IntArray.plus")
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assertArrayNotSameButEquals(longArrayOf(1, 2), longOnePlus(2), "LongArray.plus")
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}
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test fun first() {
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expect(1) { arrayOf(1, 2, 3).first() }
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expect(2) { arrayOf(1, 2, 3).first { it % 2 == 0 } }
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}
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test fun last() {
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expect(3) { arrayOf(1, 2, 3).last() }
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expect(2) { arrayOf(1, 2, 3).last { it % 2 == 0 } }
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}
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test fun contains() {
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assertTrue(arrayOf("1", "2", "3", "4").contains("2"))
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assertTrue("3" in arrayOf("1", "2", "3", "4"))
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assertTrue("0" !in arrayOf("1", "2", "3", "4"))
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}
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test fun slice() {
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val iter = listOf(3, 1, 2)
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assertEquals(listOf("B"), arrayOf("A", "B", "C").slice(1..1))
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assertEquals(listOf('E', 'B', 'C'), arrayOf('A', 'B', 'C', 'E').slice(iter))
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assertEquals(listOf<Int>(), arrayOf<Int>().slice(5..4))
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assertEquals(listOf<Int>(), arrayOf(1, 2, 3).slice(5..1))
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assertEquals(listOf(2, 3, 9), arrayOf(2, 3, 9, 2, 3, 9).slice(iter))
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assertEquals(listOf(2.0, 3.0), arrayOf(2.0, 3.0, 9.0).slice(0..1))
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assertEquals(listOf(2f, 3f), arrayOf(2f, 3f, 9f).slice(0..1))
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assertEquals(listOf<Byte>(127, 100), arrayOf<Byte>(50, 100, 127).slice(2 downTo 1))
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assertEquals(listOf<Short>(200, 100), arrayOf<Short>(50, 100, 200).slice(2 downTo 1))
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assertEquals(listOf(100L, 200L, 30L), arrayOf(50L, 100L, 200L, 30L).slice(1..3))
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assertEquals(listOf(true, false, true), arrayOf(true, false, true, true).slice(iter))
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}
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test fun toSortedList() {
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assertTrue(arrayOf<Long>().toSortedList().none())
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assertEquals(listOf(1), arrayOf(1).toSortedList())
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assertEquals(listOf("aab", "aba", "ac"), arrayOf("ac", "aab", "aba").toSortedList())
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}
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test fun asIterable() {
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val arr1 = intArrayOf(1, 2, 3, 4, 5)
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val iter1 = arr1.asIterable()
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assertEquals(arr1.toList(), iter1.toList())
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arr1[0] = 0
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assertEquals(arr1.toList(), iter1.toList())
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val arr2 = arrayOf("one", "two", "three")
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val iter2 = arr2.asIterable()
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assertEquals(arr2.toList(), iter2.toList())
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arr2[0] = ""
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assertEquals(arr2.toList(), iter2.toList())
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val arr3 = IntArray(0)
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val iter3 = arr3.asIterable()
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assertEquals(iter3.toList(), emptyList<Int>())
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val arr4 = Array(0, { "$it" })
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val iter4 = arr4.asIterable()
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assertEquals(iter4.toList(), emptyList<String>())
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}
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test fun asList() {
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assertEquals(listOf(1, 2, 3), intArrayOf(1, 2, 3).asList())
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assertEquals(listOf<Byte>(1, 2, 3), byteArrayOf(1, 2, 3).asList())
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assertEquals(listOf(true, false), booleanArrayOf(true, false).asList())
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assertEquals(listOf(1, 2, 3), arrayOf(1, 2, 3).asList())
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assertEquals(listOf("abc", "def"), arrayOf("abc", "def").asList())
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val ints = intArrayOf(1, 5, 7)
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val intsAsList = ints.asList()
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assertEquals(5, intsAsList[1])
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ints[1] = 10
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assertEquals(10, intsAsList[1], "Should reflect changes in original array")
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}
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test fun toPrimitiveArray() {
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val genericArray: Array<Int> = arrayOf(1, 2, 3)
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val primitiveArray: IntArray = genericArray.toIntArray()
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expect(3) { primitiveArray.size() }
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assertEquals(genericArray.asList(), primitiveArray.asList())
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val charList = listOf('a', 'b')
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val charArray: CharArray = charList.toCharArray()
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assertEquals(charList, charArray.asList())
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}
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test fun copyOf() {
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booleanArrayOf(true, false, true).let { assertArrayNotSameButEquals(it, it.copyOf()) }
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byteArrayOf(0, 1, 2, 3, 4, 5).let { assertArrayNotSameButEquals(it, it.copyOf()) }
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shortArrayOf(0, 1, 2, 3, 4, 5).let { assertArrayNotSameButEquals(it, it.copyOf()) }
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intArrayOf(0, 1, 2, 3, 4, 5).let { assertArrayNotSameButEquals(it, it.copyOf()) }
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longArrayOf(0, 1, 2, 3, 4, 5).let { assertArrayNotSameButEquals(it, it.copyOf()) }
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floatArrayOf(0F, 1F, 2F, 3F).let { assertArrayNotSameButEquals(it, it.copyOf()) }
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doubleArrayOf(0.0, 1.0, 2.0, 3.0, 4.0, 5.0).let { assertArrayNotSameButEquals(it, it.copyOf()) }
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charArrayOf('0', '1', '2', '3', '4', '5').let { assertArrayNotSameButEquals(it, it.copyOf()) }
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}
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test fun copyAndResize() {
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assertArrayNotSameButEquals(arrayOf("1", "2"), arrayOf("1", "2", "3").copyOf(2))
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assertArrayNotSameButEquals(arrayOf("1", "2", null), arrayOf("1", "2").copyOf(3))
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assertArrayNotSameButEquals(longArrayOf(1, 2), longArrayOf(1, 2, 3).copyOf(2))
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assertArrayNotSameButEquals(longArrayOf(1, 2, 0), longArrayOf(1, 2).copyOf(3))
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assertArrayNotSameButEquals(intArrayOf(1, 2), intArrayOf(1, 2, 3).copyOf(2))
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assertArrayNotSameButEquals(intArrayOf(1, 2, 0), intArrayOf(1, 2).copyOf(3))
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assertArrayNotSameButEquals(charArrayOf('A', 'B'), charArrayOf('A', 'B', 'C').copyOf(2))
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assertArrayNotSameButEquals(charArrayOf('A', 'B', '\u0000'), charArrayOf('A', 'B').copyOf(3))
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}
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test fun copyOfRange() {
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assertArrayNotSameButEquals(booleanArrayOf(true, false, true), booleanArrayOf(true, false, true, true).copyOfRange(0, 3))
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assertArrayNotSameButEquals(byteArrayOf(0, 1, 2), byteArrayOf(0, 1, 2, 3, 4, 5).copyOfRange(0, 3))
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assertArrayNotSameButEquals(shortArrayOf(0, 1, 2), shortArrayOf(0, 1, 2, 3, 4, 5).copyOfRange(0, 3))
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assertArrayNotSameButEquals(intArrayOf(0, 1, 2), intArrayOf(0, 1, 2, 3, 4, 5).copyOfRange(0, 3))
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assertArrayNotSameButEquals(longArrayOf(0, 1, 2), longArrayOf(0, 1, 2, 3, 4, 5).copyOfRange(0, 3))
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assertArrayNotSameButEquals(floatArrayOf(0F, 1F, 2F), floatArrayOf(0F, 1F, 2F, 3F, 4F, 5F).copyOfRange(0, 3))
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assertArrayNotSameButEquals(doubleArrayOf(0.0, 1.0, 2.0), doubleArrayOf(0.0, 1.0, 2.0, 3.0, 4.0, 5.0).copyOfRange(0, 3))
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assertArrayNotSameButEquals(charArrayOf('0', '1', '2'), charArrayOf('0', '1', '2', '3', '4', '5').copyOfRange(0, 3))
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}
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/*
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TODO FIXME ASAP: These currently fail on JS due to missing upto() method on numbers
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test fun reduce() {
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expect(-4) { intArray(1, 2, 3) reduce { a, b -> a - b } }
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// Fails in JS: expect(-4.toLong()) { longArray(1, 2, 3) reduce { a, b -> a - b } }
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expect(-4.toFloat()) { floatArray(1.toFloat(), 2.toFloat(), 3.toFloat()) reduce { a, b -> a - b } }
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expect(-4.0) { doubleArray(1.0, 2.0, 3.0) reduce { a, b -> a - b } }
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expect('3') { charArray('1', '3', '2') reduce { a, b -> if(a > b) a else b } }
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expect(false) { booleanArray(true, true, false) reduce { a, b -> a && b } }
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expect(true) { booleanArray(true, true) reduce { a, b -> a && b } }
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// Fails in JS: expect(0.toByte()) { byteArray(3, 2, 1) reduce { a, b -> (a - b).toByte() } }
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// Fails in JS: expect(0.toShort()) { shortArray(3, 2, 1) reduce { a, b -> (a - b).toShort() } }
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failsWith(javaClass<UnsupportedOperationException>()) {
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intArray().reduce { a, b -> a + b}
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}
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}
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test fun reduceRight() {
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expect(2) { intArray(1, 2, 3) reduceRight { a, b -> a - b } }
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// Fails in JS: expect(2.toLong()) { longArray(1, 2, 3) reduceRight { a, b -> a - b } }
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expect(2.toFloat()) { floatArray(1.toFloat(), 2.toFloat(), 3.toFloat()) reduceRight { a, b -> a - b } }
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expect(2.0) { doubleArray(1.0, 2.0, 3.0) reduceRight { a, b -> a - b } }
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expect('3') { charArray('1', '3', '2') reduceRight { a, b -> if(a > b) a else b } }
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expect(false) { booleanArray(true, true, false) reduceRight { a, b -> a && b } }
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expect(true) { booleanArray(true, true) reduceRight { a, b -> a && b } }
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// Fails in JS: expect(2.toByte()) { byteArray(1, 2, 3) reduceRight { a, b -> (a - b).toByte() } }
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// Fails in JS: expect(2.toShort()) { shortArray(1, 2, 3) reduceRight { a, b -> (a - b).toShort() } }
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failsWith(javaClass<UnsupportedOperationException>()) {
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intArray().reduceRight { a, b -> a + b}
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}
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}
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test fun reverse() {
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expect(arrayList(3, 2, 1)) { intArray(1, 2, 3).reverse() }
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// Fails in JS: expect(arrayList<Byte>(3, 2, 1)) { byteArray(1, 2, 3).reverse() }
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// Fails in JS: expect(arrayList<Short>(3, 2, 1)) { shortArray(1, 2, 3).reverse() }
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// Fails in JS: expect(arrayList<Long>(3, 2, 1)) { longArray(1, 2, 3).reverse() }
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expect(arrayList(3.toFloat(), 2.toFloat(), 1.toFloat())) { floatArray(1.toFloat(), 2.toFloat(), 3.toFloat()).reverse() }
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expect(arrayList(3.0, 2.0, 1.0)) { doubleArray(1.0, 2.0, 3.0).reverse() }
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expect(arrayList('3', '2', '1')) { charArray('1', '2', '3').reverse() }
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expect(arrayList(false, false, true)) { booleanArray(true, false, false).reverse() }
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}
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*/
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}
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