cdf338247b
Change-Id: I539ecd32ecb61d4be6b89c52065f55269937aa32 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/553580 Reviewed-by: Brian Salomon <bsalomon@google.com> Commit-Queue: Herb Derby <herb@google.com>
99 lines
2.6 KiB
C++
99 lines
2.6 KiB
C++
/*
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* Copyright 2022 Google LLC
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "include/core/SkSpan.h"
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#include "tests/Test.h"
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#include <array>
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#include <vector>
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DEF_TEST(SkSpanBasicTemplateGuide, reporter) {
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// Test constness preservation for SkSpan.
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{
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std::vector<int> v = {{1, 2, 3, 4, 5}};
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auto s = SkSpan(v);
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REPORTER_ASSERT(reporter, s[3] == 4);
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s[3] = 100;
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REPORTER_ASSERT(reporter, s[3] == 100);
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}
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{
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std::vector<int> t = {{1, 2, 3, 4, 5}};
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const std::vector<int>& v = t;
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auto s = SkSpan(v);
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//s[3] = 100; // Should fail to compile
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REPORTER_ASSERT(reporter, s[3] == 4);
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REPORTER_ASSERT(reporter, t[3] == 4);
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t[3] = 100;
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REPORTER_ASSERT(reporter, s[3] == 100);
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}
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{
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std::array<int, 5> v = {{1, 2, 3, 4, 5}};
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auto s = SkSpan(v); // {1, 2, 3, 4, 5}
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REPORTER_ASSERT(reporter, s[3] == 4);
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s[3] = 100; // {1, 2, 3, 100, 5}
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REPORTER_ASSERT(reporter, s[3] == 100);
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auto s1 = s.subspan(1,3); // {2, 3, 100}
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REPORTER_ASSERT(reporter, s1.size() == 3);
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REPORTER_ASSERT(reporter, s1.front() == 2);
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REPORTER_ASSERT(reporter, s1.back() == 100);
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auto s2 = s.subspan(2); // {3, 100, 5}
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REPORTER_ASSERT(reporter, s2.size() == 3);
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REPORTER_ASSERT(reporter, s2.front() == 3);
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REPORTER_ASSERT(reporter, s2.back() == 5);
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}
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{
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std::array<int, 5> t = {{1, 2, 3, 4, 5}};
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const std::array<int, 5>& v = t;
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auto s = SkSpan(v);
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//s[3] = 100; // Should fail to compile
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REPORTER_ASSERT(reporter, s[3] == 4);
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REPORTER_ASSERT(reporter, t[3] == 4);
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t[3] = 100;
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REPORTER_ASSERT(reporter, s[3] == 100);
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}
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{
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std::vector<int> v;
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auto s = SkSpan(v);
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REPORTER_ASSERT(reporter, s.empty());
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}
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auto routine = [&](SkSpan<const int> a) {
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REPORTER_ASSERT(reporter, a.size() == 4);
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};
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routine({1,2,3,4});
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}
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static bool test_span_parameter(SkSpan<const int> s) {
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return s[0] == 1 && s[1] == 2 && s[2] == 3;
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}
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DEF_TEST(SkSpanDeduceParam, reporter) {
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{
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std::vector<int> v = {{1, 2, 3}};
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REPORTER_ASSERT(reporter, test_span_parameter(v));
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}
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{
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int v[]{1, 2, 3};
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REPORTER_ASSERT(reporter, test_span_parameter(v));
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}
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{
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test_span_parameter({1, 2, 3});
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REPORTER_ASSERT(reporter, test_span_parameter({1, 2, 3}));
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}
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{
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int v[]{1, 2, 3};
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auto s = SkSpan(v);
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REPORTER_ASSERT(reporter, test_span_parameter(s));
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}
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}
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