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Richard SmithandJon Ross-Perkins
dc7839e893
Use it to replace most existing modernize-loop-convert lints with range-based for loops. As requested in review of #5475. --------- Co-authored-by: Jon Ross-Perkins <jperkins@google.com>
50 lines
1.2 KiB
C++
50 lines
1.2 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#include "common/growing_range.h"
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#include <gtest/gtest.h>
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#include <vector>
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namespace Carbon {
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namespace {
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TEST(GrowingRangeTest, TestUnchanged) {
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std::vector<int> v = {1, 2, 3, 4, 5};
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int k = 0;
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for (int n : GrowingRange(v)) {
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EXPECT_EQ(n, ++k);
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}
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}
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TEST(GrowingRangeTest, TestGrowWithRealloc) {
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std::vector<int> expected = {3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0};
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std::vector<int> v;
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v.reserve(1);
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v.push_back(3);
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EXPECT_LT(v.capacity(), expected.size());
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int i = 0;
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for (int n : GrowingRange(v)) {
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// Append n copies of n - 1.
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v.insert(v.end(), n, n - 1);
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EXPECT_EQ(n, expected[i++]);
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}
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}
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TEST(GrowingRangeTest, TestNoReference) {
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std::vector<int> v;
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// Use `decltype(auto)` to capture the type of the element including whether
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// it's a reference.
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for (decltype(auto) elem : GrowingRange(v)) {
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// The type of `elem` should be `int`, not `int&`.
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static_assert(std::same_as<decltype(elem), int>);
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}
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}
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} // namespace
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} // namespace Carbon
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