Make the fuchsia mojo/public repo the source of truth.

mojo/public/cpp/bindings/tests/iterator_test_util.h

-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef MOJO_PUBLIC_CPP_BINDINGS_TESTS_ITERATOR_TEST_UTIL_H_
-#define MOJO_PUBLIC_CPP_BINDINGS_TESTS_ITERATOR_TEST_UTIL_H_
-
-#include <algorithm>
-#include <vector>
-
-#include "gtest/gtest.h"
-
-namespace mojo {
-namespace test {
-
-template <typename Iterator, typename ValueType>
-void ExpectIteratorValues(Iterator begin,
-                          Iterator end,
-                          const std::vector<ValueType>& expected_values) {
-  size_t i = 0u;
-  for (Iterator it = begin; it != end; ++it, ++i) {
-    EXPECT_EQ(*it, expected_values[i]);
-  }
-  EXPECT_EQ(i, expected_values.size());
-}
-
-// This helper template checks that the specified `Iterator` satisfies the C++
-// BidirectionalIterator concept, as described in:
-//   http://en.cppreference.com/w/cpp/concept/BidirectionalIterator.
-//
-// This template will mutate the values in the iterator.
-template <typename Iterator, typename ValueType>
-void ExpectBidiIteratorConcept(Iterator begin,
-                               Iterator end,
-                               const std::vector<ValueType>& expected_values) {
-  {
-    // Default iterator is constructible.  Deferencing it is undefined
-    // behaviour.
-    Iterator default_iter;
-  }
-
-  // Now we test bidirecionality:
-  // Prefix increment.
-  Iterator iter1(begin);
-  EXPECT_EQ(*iter1, expected_values[0]);
-
-  Iterator iter2(begin);
-  ++iter2;
-
-  EXPECT_NE(iter1, iter2);
-  EXPECT_EQ(*iter2, expected_values[1]);
-  ++iter1;
-  EXPECT_EQ(iter1, iter2);
-
-  // Postfix increment.
-  Iterator prev_iter2 = iter2++;  // element 2
-  EXPECT_EQ(*prev_iter2, expected_values[1]);
-  EXPECT_EQ(prev_iter2, iter1);
-  EXPECT_EQ(*iter2, expected_values[2]);
-
-  // Prefix decrement.
-  EXPECT_EQ(--iter2, prev_iter2);  // element 1
-  EXPECT_EQ(--iter1, begin);       // element 0
-  // Postfix decrement.
-  EXPECT_EQ(iter2--, prev_iter2);  // element 0
-
-  // Equality.
-  EXPECT_EQ(iter1, begin);
-  EXPECT_NE(++iter2, begin);
-
-  // Copy constructible and assignable.
-  Iterator iter3 = iter2;
-  EXPECT_EQ(iter3, iter2);
-  EXPECT_EQ(*iter3, *iter2);
-
-  Iterator iter3_cp(iter3);
-  EXPECT_EQ(iter3_cp, iter3);
-  EXPECT_EQ(*iter3_cp, *iter3);
-
-  // Move constructible and assignable.
-  Iterator iter3_mv = static_cast<Iterator&&>(iter3);
-  Iterator iter3_cp_mv;
-  iter3_cp_mv = static_cast<Iterator&&>(iter3_cp);
-  EXPECT_EQ(iter3_mv, iter3_cp_mv);
-
-  // operator->.
-  EXPECT_EQ(*(iter3_mv.operator->()), expected_values[1]);
-
-  // Swap two iterators:
-  Iterator i1 = begin;
-  Iterator i2 = ++begin;
-  EXPECT_EQ(*i1, expected_values[0]);
-  EXPECT_EQ(*i2, expected_values[1]);
-  std::swap(i1, i2);
-  EXPECT_EQ(*i1, expected_values[1]);
-  EXPECT_EQ(*i2, expected_values[0]);
-}
-
-template <typename Iterator, typename ValueType>
-void ExpectBidiMutableIteratorConcept(
-    Iterator begin,
-    Iterator end,
-    const std::vector<ValueType>& expected_values) {
-  Iterator it = begin;
-  std::vector<ValueType> values = expected_values;
-
-  {
-    SCOPED_TRACE("Mutate 1st value.");
-    *it = 12;
-    values[0] = 12;
-    ExpectIteratorValues(begin, end, values);
-  }
-
-  {
-    SCOPED_TRACE("Mutate 2nd value.");
-    *++it = 14;
-    values[1] = 14;
-    ExpectIteratorValues(begin, end, values);
-  }
-
-  {
-    SCOPED_TRACE("Mutate 3rd value.");
-    *--it = 22;
-    values[0] = 22;
-    ExpectIteratorValues(begin, end, values);
-  }
-}
-
-}  // namespace test
-}  // namespace mojo
-
-#endif  // MOJO_PUBLIC_CPP_BINDINGS_TESTS_ITERATOR_TEST_UTIL_H_