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Implement reduceIndexedOrNull and reduceRightIndexedOrNull #KT-36866

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Abduqodiri Qurbonzoda
2020-03-06 13:49:22 +03:00
parent b60633d79a
commit b1fac4e721
13 changed files with 964 additions and 0 deletions
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libraries/stdlib/test/collections/ArraysTest.kt
+28
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@@ -1016,6 +1016,20 @@ class ArraysTest {
}
}
@Test fun reduceIndexedOrNull() {
expect(-1) { intArrayOf(1, 2, 3).reduceIndexedOrNull { index, a, b -> index + a - b } }
expect(-1.toLong()) { longArrayOf(1, 2, 3).reduceIndexedOrNull { index, a, b -> index + a - b } }
expect(-1F) { floatArrayOf(1F, 2F, 3F).reduceIndexedOrNull { index, a, b -> index + a - b } }
expect(-1.0) { doubleArrayOf(1.0, 2.0, 3.0).reduceIndexedOrNull { index, a, b -> index + a - b } }
expect('2') { charArrayOf('1', '3', '2').reduceIndexedOrNull { index, a, b -> if (a > b && index == 1) a else b } }
expect(true) { booleanArrayOf(true, true, false).reduceIndexedOrNull { index, a, b -> a && b || index == 2 } }
expect(false) { booleanArrayOf(true, true).reduceIndexedOrNull { index, a, b -> a && b && index != 1 } }
expect(1.toByte()) { byteArrayOf(3, 2, 1).reduceIndexedOrNull { index, a, b -> if (index != 2) (a - b).toByte() else a.toByte() } }
expect(1.toShort()) { shortArrayOf(3, 2, 1).reduceIndexedOrNull { index, a, b -> if (index != 2) (a - b).toShort() else a.toShort() } }
expect(null, { intArrayOf().reduceIndexedOrNull { index, a, b -> index + a + b } })
}
@Test fun reduceRightIndexed() {
expect(1) { intArrayOf(1, 2, 3).reduceRightIndexed { index, a, b -> index + a - b } }
expect(1.toLong()) { longArrayOf(1, 2, 3).reduceRightIndexed { index, a, b -> index + a - b } }
@@ -1032,6 +1046,20 @@ class ArraysTest {
}
}
@Test fun reduceRightIndexedOrNull() {
expect(1) { intArrayOf(1, 2, 3).reduceRightIndexedOrNull { index, a, b -> index + a - b } }
expect(1.toLong()) { longArrayOf(1, 2, 3).reduceRightIndexedOrNull { index, a, b -> index + a - b } }
expect(1F) { floatArrayOf(1F, 2F, 3F).reduceRightIndexedOrNull { index, a, b -> index + a - b } }
expect(1.0) { doubleArrayOf(1.0, 2.0, 3.0).reduceRightIndexedOrNull { index, a, b -> index + a - b } }
expect('2') { charArrayOf('1', '3', '2').reduceRightIndexedOrNull { index, a, b -> if (a > b && index == 0) a else b } }
expect(true) { booleanArrayOf(true, true, false).reduceRightIndexedOrNull { index, a, b -> a && b || index == 1 } }
expect(false) { booleanArrayOf(true, true).reduceRightIndexedOrNull { index, a, b -> a && b && index != 0 } }
expect(1.toByte()) { byteArrayOf(3, 2, 1).reduceRightIndexedOrNull { index, a, b -> if (index != 1) (a - b).toByte() else a.toByte() } }
expect(1.toShort()) { shortArrayOf(3, 2, 1).reduceRightIndexedOrNull { index, a, b -> if (index != 1) (a - b).toShort() else a.toShort() } }
expect(null, { intArrayOf().reduceRightIndexedOrNull { index, a, b -> index + a + b } })
}
@Test fun reduce() {
expect(-4) { intArrayOf(1, 2, 3).reduce { a, b -> a - b } }
expect(-4.toLong()) { longArrayOf(1, 2, 3).reduce { a, b -> a - b } }