added support for fold() along with a handy expect() test method (like scalatest)

2012-01-06 09:35:44 +00:00
parent 16b617044c
commit 4627738ca4
3 changed files with 38 additions and 0 deletions
@@ -127,6 +127,21 @@ class CollectionTest() : TestSupport() {
    assertEquals(6, count)
  }

+  fun testFold() {
+    expect(10) {
+      val numbers = arrayList(1, 2, 3, 4)
+
+      // TODO would be nice to be able to write this as this
+      //numbers.fold(0){it + it2}
+      numbers.fold(0){(it, it2) -> it + it2}
+    }
+
+    expect(0) {
+      val numbers = arrayList<Int>()
+      numbers.fold(0){(it, it2) -> it + it2}
+    }
+  }
+
  fun testGroupBy() {
    val words = arrayList("a", "ab", "abc", "def", "abcd")
    /*