Migrated test block 26 to Dart 2.0.

tests/corelib/splay_tree_test.dart

Index: tests/corelib/splay_tree_test.dart
diff --git a/tests/corelib/splay_tree_test.dart b/tests/corelib/splay_tree_test.dart
deleted file mode 100644
index f1064a3b8679bf6b9f719b5a4a17e92d72fbfdc6..0000000000000000000000000000000000000000
--- a/tests/corelib/splay_tree_test.dart
+++ /dev/null
@@ -1,142 +0,0 @@
-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-// Dart test for Splaytrees.
-library splay_tree_test;
-
-import "package:expect/expect.dart";
-import 'dart:collection';
-
-main() {
-  // Simple tests.
-  SplayTreeMap tree = new SplayTreeMap();
-  tree[1] = "first";
-  tree[3] = "third";
-  tree[5] = "fifth";
-  tree[2] = "second";
-  tree[4] = "fourth";
-
-  var correctSolution = ["first", "second", "third", "fourth", "fifth"];
-
-  tree.forEach((key, value) {
-    Expect.equals(true, key >= 1);
-    Expect.equals(true, key <= 5);
-    Expect.equals(value, correctSolution[key - 1]);
-  });
-
-  for (var v in ["first", "second", "third", "fourth", "fifth"]) {
-    Expect.isTrue(tree.containsValue(v));
-  }
-  ;
-  Expect.isFalse(tree.containsValue("sixth"));
-
-  tree[7] = "seventh";
-
-  Expect.equals(1, tree.firstKey());
-  Expect.equals(7, tree.lastKey());
-
-  Expect.equals(2, tree.lastKeyBefore(3));
-  Expect.equals(4, tree.firstKeyAfter(3));
-
-  Expect.equals(null, tree.lastKeyBefore(1));
-  Expect.equals(2, tree.firstKeyAfter(1));
-
-  Expect.equals(4, tree.lastKeyBefore(5));
-  Expect.equals(7, tree.firstKeyAfter(5));
-
-  Expect.equals(5, tree.lastKeyBefore(7));
-  Expect.equals(null, tree.firstKeyAfter(7));
-
-  Expect.equals(5, tree.lastKeyBefore(6));
-  Expect.equals(7, tree.firstKeyAfter(6));
-
-  testSetFrom();
-  regressRemoveWhere();
-  regressRemoveWhere2();
-  regressFromCompare();
-}
-
-void regressRemoveWhere() {
-  // Regression test. Fix in https://codereview.chromium.org/148523006/
-  var t = new SplayTreeSet();
-  t.addAll([1, 3, 5, 7, 2, 4, 6, 8, 0]);
-  var seen = new List<bool>.filled(9, false);
-  t.removeWhere((x) {
-    // Called only once per element.
-    Expect.isFalse(seen[x], "seen $x");
-    seen[x] = true;
-    return x.isOdd;
-  });
-}
-
-void regressRemoveWhere2() {
-  // Regression test for http://dartbug.com/18676
-  // Removing all elements with removeWhere causes error.
-
-  var t = new SplayTreeSet();
-  t.addAll([1, 2, 3, 4, 5]);
-  t.removeWhere((_) => true); // Should not throw.
-  Expect.isTrue(t.isEmpty);
-  t.addAll([1, 2, 3, 4, 5]);
-  t.retainWhere((_) => false); // Should not throw.
-  Expect.isTrue(t.isEmpty);
-}
-
-void testSetFrom() {
-  var set1 = new SplayTreeSet<num>()..addAll([1, 2, 3, 4, 5]);
-  var set2 = new SplayTreeSet<int>.from(set1);
-  Expect.equals(5, set2.length);
-  for (int i = 1; i <= 5; i++) {
-    Expect.isTrue(set2.contains(i));
-  }
-
-  set1 = new SplayTreeSet<num>()..addAll([0, 1, 2.4, 3.14, 5]);
-  set2 = new SplayTreeSet<int>.from(set1.where((x) => x is int));
-  Expect.equals(3, set2.length);
-}
-
-void regressFromCompare() {
-  // Regression test for http://dartbug.com/23387.
-  // The compare and isValidKey arguments to SplayTreeMap.from were ignored.
-
-  int compare(a, b) {
-    if (a is IncomparableKey && b is IncomparableKey) {
-      return b.id - a.id;
-    }
-    throw "isValidKey failure";
-  }
-
-  bool isValidKey(o) => o is IncomparableKey;
-  IncomparableKey key(int n) => new IncomparableKey(n);
-
-  var entries = {key(0): 0, key(1): 1, key(2): 2, key(0): 0};
-  Expect.equals(4, entries.length);
-  var map =
-      new SplayTreeMap<IncomparableKey, int>.from(entries, compare, isValidKey);
-  Expect.equals(3, map.length);
-  for (int i = 0; i < 3; i++) {
-    Expect.isTrue(map.containsKey(key(i)));
-    Expect.equals(i, map[key(i)]);
-  }
-  Expect.isFalse(map.containsKey(key(5)));
-  Expect.isFalse(map.containsKey(1));
-  Expect.isFalse(map.containsKey("string"));
-  Expect.equals(null, map[key(5)]);
-  Expect.equals(null, map[1]);
-  Expect.equals(null, map["string"]);
-  Expect.throws(() {
-    map[1] = 42;
-  });
-  Expect.throws(() {
-    map["string"] = 42;
-  });
-  map[key(5)] = 42;
-  Expect.equals(4, map.length);
-  Expect.equals(42, map[key(5)]);
-}
-
-class IncomparableKey {
-  final int id;
-  IncomparableKey(this.id);
-}