David Benjamin
20a06474c0
Pretty much all of std::span and base::span are constexpr. der::Input similarly has constexpr bits. So we can use bssl::Span in der::Input, align bssl::Span in constexpr-ness. Also fix const-ness of first() and last(). Bug: chromium:770501 Change-Id: Ic0031cd955d8ac0af9c3cb928411f23a34820347 Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/61945 Commit-Queue: Bob Beck <bbe@google.com> Auto-Submit: David Benjamin <davidben@google.com> Commit-Queue: David Benjamin <davidben@google.com> Reviewed-by: Bob Beck <bbe@google.com>
103 lines
3.1 KiB
C++
103 lines
3.1 KiB
C++
/* Copyright (c) 2017, Google Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
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#include <stdio.h>
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#include <vector>
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#include <gtest/gtest.h>
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#include <openssl/ssl.h>
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BSSL_NAMESPACE_BEGIN
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namespace {
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static void TestCtor(Span<int> s, const int *ptr, size_t size) {
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EXPECT_EQ(s.data(), ptr);
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EXPECT_EQ(s.size(), size);
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}
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static void TestConstCtor(Span<const int> s, const int *ptr, size_t size) {
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EXPECT_EQ(s.data(), ptr);
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EXPECT_EQ(s.size(), size);
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}
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TEST(SpanTest, CtorEmpty) {
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Span<int> s;
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TestCtor(s, nullptr, 0);
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}
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TEST(SpanTest, CtorFromPtrAndSize) {
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std::vector<int> v = {7, 8, 9, 10};
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Span<int> s(v.data(), v.size());
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TestCtor(s, v.data(), v.size());
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}
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TEST(SpanTest, CtorFromVector) {
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std::vector<int> v = {1, 2};
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// Const ctor is implicit.
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TestConstCtor(v, v.data(), v.size());
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// Mutable is explicit.
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Span<int> s(v);
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TestCtor(s, v.data(), v.size());
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}
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TEST(SpanTest, CtorConstFromArray) {
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int v[] = {10, 11};
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// Array ctor is implicit for const and mutable T.
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TestConstCtor(v, v, 2);
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TestCtor(v, v, 2);
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}
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TEST(SpanTest, MakeSpan) {
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std::vector<int> v = {100, 200, 300};
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TestCtor(MakeSpan(v), v.data(), v.size());
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TestCtor(MakeSpan(v.data(), v.size()), v.data(), v.size());
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TestConstCtor(MakeSpan(v.data(), v.size()), v.data(), v.size());
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TestConstCtor(MakeSpan(v), v.data(), v.size());
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}
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TEST(SpanTest, MakeConstSpan) {
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std::vector<int> v = {100, 200, 300};
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TestConstCtor(MakeConstSpan(v), v.data(), v.size());
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TestConstCtor(MakeConstSpan(v.data(), v.size()), v.data(), v.size());
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// But not:
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// TestConstCtor(MakeSpan(v), v.data(), v.size());
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}
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TEST(SpanTest, Accessor) {
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std::vector<int> v({42, 23, 5, 101, 80});
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Span<int> s(v);
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for (size_t i = 0; i < s.size(); ++i) {
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EXPECT_EQ(s[i], v[i]);
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EXPECT_EQ(s.at(i), v.at(i));
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}
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EXPECT_EQ(s.begin(), v.data());
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EXPECT_EQ(s.end(), v.data() + v.size());
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}
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TEST(SpanTest, ConstExpr) {
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static constexpr int v[] = {1, 2, 3, 4};
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constexpr bssl::Span<const int> span1(v);
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static_assert(span1.size() == 4u, "wrong size");
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constexpr bssl::Span<const int> span2 = MakeConstSpan(v);
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static_assert(span2.size() == 4u, "wrong size");
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static_assert(span2.subspan(1).size() == 3u, "wrong size");
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static_assert(span2.first(1).size() == 1u, "wrong size");
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static_assert(span2.last(1).size() == 1u, "wrong size");
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static_assert(span2[0] == 1, "wrong value");
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}
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} // namespace
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BSSL_NAMESPACE_END
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