/* * Copyright 2019 Google Inc. * * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ #include "include/core/SkTypes.h" #include "src/core/SkDescriptor.h" #include "src/core/SkScalerContext.h" #include "tests/Test.h" #include class SkDescriptorTestHelper { public: static void SetLength(SkDescriptor* desc, size_t length) { desc->fLength = length; } }; DEF_TEST(Descriptor_empty, r) { const size_t size = sizeof(SkDescriptor); auto desc = SkDescriptor::Alloc(size); desc->init(); REPORTER_ASSERT(r, desc->isValid()); REPORTER_ASSERT(r, desc->getLength() == size); } DEF_TEST(Descriptor_valid_simple, r) { const size_t size = sizeof(SkDescriptor) + sizeof(SkDescriptor::Entry) + sizeof(SkScalerContextRec); auto desc = SkDescriptor::Alloc(size); desc->init(); SkScalerContextRec rec; desc->addEntry(kRec_SkDescriptorTag, sizeof(rec), &rec); REPORTER_ASSERT(r, desc->isValid()); REPORTER_ASSERT(r, desc->getLength() == size); SkDescriptorTestHelper::SetLength(desc.get(), size - 4); REPORTER_ASSERT(r, !desc->isValid()); } DEF_TEST(Descriptor_valid_simple_extra_space, r) { const size_t extra_space = 100; const size_t size = sizeof(SkDescriptor) + sizeof(SkDescriptor::Entry) + sizeof(SkScalerContextRec); auto desc = SkDescriptor::Alloc(size + extra_space); desc->init(); SkScalerContextRec rec; desc->addEntry(kRec_SkDescriptorTag, sizeof(rec), &rec); REPORTER_ASSERT(r, desc->isValid()); REPORTER_ASSERT(r, desc->getLength() == size); SkDescriptorTestHelper::SetLength(desc.get(), size - 4); REPORTER_ASSERT(r, !desc->isValid()); } DEF_TEST(Descriptor_valid_more_tags, r) { const size_t effectSize = 16; const size_t testSize = 32; const size_t size = sizeof(SkDescriptor) + 3 * sizeof(SkDescriptor::Entry) + sizeof(SkScalerContextRec) + effectSize + testSize; auto desc = SkDescriptor::Alloc(size); desc->init(); SkScalerContextRec rec; desc->addEntry(kRec_SkDescriptorTag, sizeof(rec), &rec); desc->addEntry(kEffects_SkDescriptorTag, effectSize, nullptr); desc->addEntry(SkSetFourByteTag('t', 'e', 's', 't'), testSize, nullptr); REPORTER_ASSERT(r, desc->isValid()); REPORTER_ASSERT(r, desc->getLength() == size); SkDescriptorTestHelper::SetLength(desc.get(), size - 4); REPORTER_ASSERT(r, !desc->isValid()); } DEF_TEST(Descriptor_invalid_rec_size, r) { const size_t size = sizeof(SkDescriptor) + sizeof(SkDescriptor::Entry) + sizeof(SkScalerContextRec) - 4; auto desc = SkDescriptor::Alloc(size); desc->init(); SkScalerContextRec rec; desc->addEntry(kRec_SkDescriptorTag, sizeof(rec) - 4, &rec); REPORTER_ASSERT(r, desc->getLength() == size); REPORTER_ASSERT(r, !desc->isValid()); } DEF_TEST(Descriptor_invalid_length, r) { const size_t size = sizeof(SkDescriptor) + sizeof(SkDescriptor::Entry); const size_t effect_size = 1000; auto desc = SkDescriptor::Alloc(size); desc->init(); SkScalerContextRec rec; desc->addEntry(kEffects_SkDescriptorTag, effect_size, nullptr); SkDescriptorTestHelper::SetLength(desc.get(), size); REPORTER_ASSERT(r, !desc->isValid()); SkDescriptorTestHelper::SetLength(desc.get(), size + effect_size); REPORTER_ASSERT(r, desc->isValid()); }