Add onEachIndexed similar to forEachIndexed #KT-37161

2020-04-01 02:52:25 +03:00
parent 57d390bab0
commit 4a7b1b210a
14 changed files with 368 additions and 17 deletions
@@ -313,6 +313,17 @@ abstract class IterableTests<T : Iterable<String>>(val createFrom: (Array<out St
        assertStaticTypeIs<ArrayList<Int>>(arrayListOf(1, 2, 3).onEach { })
    }

+    @Test
+    fun onEachIndexed() {
+        var count = 0
+        val newData = data.onEachIndexed { i, e -> count += i + e.length }
+        assertEquals(7, count)
+        assertSame(data, newData)
+
+        // static types test
+        assertStaticTypeIs<ArrayList<Int>>(arrayListOf(1, 2, 3).onEachIndexed { _, _ -> })
+    }
+
    @Test
    fun contains() {
        assertTrue(data.contains("foo"))