test rename overhaul: step 7 - corelib tests

tests/corelib/src/SetIteratorTest.dart

-// 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.
-
-class FixedHashCode implements Hashable {
-  final int _hashCode;
-  const FixedHashCode(this._hashCode);
-  int hashCode() { return _hashCode; }
-}
-
-class SetIteratorTest {
-  static testMain() {
-    testSmallSet();
-    testLargeSet();
-    testEmptySet();
-    testSetWithDeletedEntries();
-    testBug5116829();
-    testDifferentSizes();
-    testDifferentHashCodes();
-  }
-
-  static void testThrows(Iterator<int> it) {
-    Expect.equals(false, it.hasNext());
-    var exception = null;
-    try {
-      it.next();
-    } catch (NoMoreElementsException e) {
-      exception = e;
-    }
-    Expect.equals(true, exception != null);
-  }
-
-  static int sum(int expected, Iterator<int> it) {
-    int count = 0;
-    while (it.hasNext()) {
-      count += it.next();
-    }
-    Expect.equals(expected, count);
-  }
-
-  static void testSmallSet() {
-    Set<int> set = new Set<int>();
-    set.add(1);
-    set.add(2);
-    set.add(3);
-
-    Iterator<int> it = set.iterator();
-    Expect.equals(true, it.hasNext());
-    sum(6, it);
-    testThrows(it);
-  }
-
-  static void testLargeSet() {
-    Set<int> set = new Set<int>();
-    int count = 0;
-    for (int i = 0; i < 100; i++) {
-      count += i;
-      set.add(i);
-    }
-    Iterator<int> it = set.iterator();
-    Expect.equals(true, it.hasNext());
-    sum(count, it);
-    testThrows(it);
-  }
-
-  static void testEmptySet() {
-    Set<int> set = new Set<int>();
-    Iterator<int> it = set.iterator();
-    Expect.equals(false, it.hasNext());
-    sum(0, it);
-    testThrows(it);
-  }
-
-  static void testSetWithDeletedEntries() {
-    Set<int> set = new Set<int>();
-    for (int i = 0; i < 100; i++) {
-      set.add(i);
-    }
-    for (int i = 0; i < 100; i++) {
-      set.remove(i);
-    }
-    Iterator<int> it = set.iterator();
-    Expect.equals(false, it.hasNext());
-    sum(0, it);
-    testThrows(it);
-
-    int count = 0;
-    for (int i = 0; i < 100; i++) {
-      set.add(i);
-      if (i % 2 == 0) set.remove(i);
-      else count += i;
-    }
-    it = set.iterator();
-    Expect.equals(true, it.hasNext());
-    sum(count, it);
-    testThrows(it);
-  }
-
-  static void testBug5116829() {
-    // During iteration we skipped slot 0 of the hashset's key list. "A" was
-    // hashed to slot 0 and therefore triggered the bug.
-    Set<String> mystrs = new Set<String>();
-    mystrs.add("A");
-    int seen = 0;
-    for (String elt in mystrs) {
-      seen++;
-      Expect.equals("A", elt);
-    }
-    Expect.equals(1, seen);
-  }
-
-  static void testDifferentSizes() {
-    for (int i = 1; i < 20; i++) {
-      Set set = new Set();
-      int sum = 0;
-      for (int j = 0; j < i; j++) {
-        set.add(j);
-        sum += j;
-      }
-      int count = 0;
-      int controlSum = 0;
-      for (int x in set) {
-        controlSum += x;
-        count++;
-      }
-      Expect.equals(i, count);
-      Expect.equals(sum, controlSum);
-    }
-  }
-
-  static void testDifferentHashCodes() {
-    for (int i = -20; i < 20; i++) {
-      Set set = new Set();
-      var element = new FixedHashCode(i);
-      set.add(element);
-      Expect.equals(1, set.length);
-      bool foundIt = false;
-      for (var x in set) {
-        foundIt = true;
-        Expect.equals(true, x === element);
-      }
-      Expect.equals(true, foundIt);
-    }
-  }
-}
-
-main() {
-  SetIteratorTest.testMain();
-}