Adrienne Walker | 08b0c97 | 2019-03-12 13:31:30 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2019 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
Ben Wagner | 9707a7e | 2019-05-06 17:17:19 -0400 | [diff] [blame] | 8 | #include "include/core/SkTypes.h" |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 9 | #include "src/core/SkDescriptor.h" |
Ben Wagner | 9707a7e | 2019-05-06 17:17:19 -0400 | [diff] [blame] | 10 | #include "src/core/SkScalerContext.h" |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 11 | #include "tests/Test.h" |
Adrienne Walker | 08b0c97 | 2019-03-12 13:31:30 -0700 | [diff] [blame] | 12 | |
Ben Wagner | 9707a7e | 2019-05-06 17:17:19 -0400 | [diff] [blame] | 13 | #include <memory> |
| 14 | |
Adrienne Walker | 08b0c97 | 2019-03-12 13:31:30 -0700 | [diff] [blame] | 15 | class SkDescriptorTestHelper { |
| 16 | public: |
| 17 | static void SetLength(SkDescriptor* desc, size_t length) { desc->fLength = length; } |
Herb Derby | 4a1af26 | 2019-10-24 10:53:53 -0400 | [diff] [blame] | 18 | static void SetCount(SkDescriptor* desc, uint32_t count) { desc->fCount = count; } |
Adrienne Walker | 08b0c97 | 2019-03-12 13:31:30 -0700 | [diff] [blame] | 19 | }; |
| 20 | |
| 21 | DEF_TEST(Descriptor_empty, r) { |
| 22 | const size_t size = sizeof(SkDescriptor); |
| 23 | |
| 24 | auto desc = SkDescriptor::Alloc(size); |
Adrienne Walker | 08b0c97 | 2019-03-12 13:31:30 -0700 | [diff] [blame] | 25 | REPORTER_ASSERT(r, desc->isValid()); |
| 26 | REPORTER_ASSERT(r, desc->getLength() == size); |
| 27 | } |
| 28 | |
| 29 | DEF_TEST(Descriptor_valid_simple, r) { |
| 30 | const size_t size = |
| 31 | sizeof(SkDescriptor) + sizeof(SkDescriptor::Entry) + sizeof(SkScalerContextRec); |
| 32 | |
| 33 | auto desc = SkDescriptor::Alloc(size); |
Adrienne Walker | 08b0c97 | 2019-03-12 13:31:30 -0700 | [diff] [blame] | 34 | SkScalerContextRec rec; |
| 35 | desc->addEntry(kRec_SkDescriptorTag, sizeof(rec), &rec); |
| 36 | REPORTER_ASSERT(r, desc->isValid()); |
| 37 | REPORTER_ASSERT(r, desc->getLength() == size); |
| 38 | |
| 39 | SkDescriptorTestHelper::SetLength(desc.get(), size - 4); |
| 40 | REPORTER_ASSERT(r, !desc->isValid()); |
| 41 | } |
| 42 | |
| 43 | DEF_TEST(Descriptor_valid_simple_extra_space, r) { |
| 44 | const size_t extra_space = 100; |
| 45 | const size_t size = |
| 46 | sizeof(SkDescriptor) + sizeof(SkDescriptor::Entry) + sizeof(SkScalerContextRec); |
| 47 | |
| 48 | auto desc = SkDescriptor::Alloc(size + extra_space); |
Adrienne Walker | 08b0c97 | 2019-03-12 13:31:30 -0700 | [diff] [blame] | 49 | SkScalerContextRec rec; |
| 50 | desc->addEntry(kRec_SkDescriptorTag, sizeof(rec), &rec); |
| 51 | REPORTER_ASSERT(r, desc->isValid()); |
| 52 | REPORTER_ASSERT(r, desc->getLength() == size); |
| 53 | |
| 54 | SkDescriptorTestHelper::SetLength(desc.get(), size - 4); |
| 55 | REPORTER_ASSERT(r, !desc->isValid()); |
| 56 | } |
| 57 | |
| 58 | DEF_TEST(Descriptor_valid_more_tags, r) { |
| 59 | const size_t effectSize = 16; |
| 60 | const size_t testSize = 32; |
| 61 | const size_t size = sizeof(SkDescriptor) + 3 * sizeof(SkDescriptor::Entry) + |
| 62 | sizeof(SkScalerContextRec) + effectSize + testSize; |
| 63 | |
| 64 | auto desc = SkDescriptor::Alloc(size); |
Adrienne Walker | 08b0c97 | 2019-03-12 13:31:30 -0700 | [diff] [blame] | 65 | SkScalerContextRec rec; |
| 66 | desc->addEntry(kRec_SkDescriptorTag, sizeof(rec), &rec); |
| 67 | desc->addEntry(kEffects_SkDescriptorTag, effectSize, nullptr); |
| 68 | desc->addEntry(SkSetFourByteTag('t', 'e', 's', 't'), testSize, nullptr); |
| 69 | REPORTER_ASSERT(r, desc->isValid()); |
| 70 | REPORTER_ASSERT(r, desc->getLength() == size); |
| 71 | |
| 72 | SkDescriptorTestHelper::SetLength(desc.get(), size - 4); |
| 73 | REPORTER_ASSERT(r, !desc->isValid()); |
| 74 | } |
| 75 | |
| 76 | DEF_TEST(Descriptor_invalid_rec_size, r) { |
| 77 | const size_t size = |
Mike Klein | 73b0df1 | 2019-03-12 17:40:46 -0500 | [diff] [blame] | 78 | sizeof(SkDescriptor) + sizeof(SkDescriptor::Entry) + sizeof(SkScalerContextRec) - 4; |
Adrienne Walker | 08b0c97 | 2019-03-12 13:31:30 -0700 | [diff] [blame] | 79 | |
| 80 | auto desc = SkDescriptor::Alloc(size); |
Adrienne Walker | 08b0c97 | 2019-03-12 13:31:30 -0700 | [diff] [blame] | 81 | SkScalerContextRec rec; |
Mike Klein | 73b0df1 | 2019-03-12 17:40:46 -0500 | [diff] [blame] | 82 | desc->addEntry(kRec_SkDescriptorTag, sizeof(rec) - 4, &rec); |
Adrienne Walker | 08b0c97 | 2019-03-12 13:31:30 -0700 | [diff] [blame] | 83 | REPORTER_ASSERT(r, desc->getLength() == size); |
| 84 | REPORTER_ASSERT(r, !desc->isValid()); |
| 85 | } |
| 86 | |
| 87 | DEF_TEST(Descriptor_invalid_length, r) { |
| 88 | const size_t size = sizeof(SkDescriptor) + sizeof(SkDescriptor::Entry); |
| 89 | const size_t effect_size = 1000; |
| 90 | |
| 91 | auto desc = SkDescriptor::Alloc(size); |
Adrienne Walker | 08b0c97 | 2019-03-12 13:31:30 -0700 | [diff] [blame] | 92 | desc->addEntry(kEffects_SkDescriptorTag, effect_size, nullptr); |
| 93 | |
| 94 | SkDescriptorTestHelper::SetLength(desc.get(), size); |
| 95 | REPORTER_ASSERT(r, !desc->isValid()); |
| 96 | |
| 97 | SkDescriptorTestHelper::SetLength(desc.get(), size + effect_size); |
| 98 | REPORTER_ASSERT(r, desc->isValid()); |
| 99 | } |
Herb Derby | 4a1af26 | 2019-10-24 10:53:53 -0400 | [diff] [blame] | 100 | |
| 101 | DEF_TEST(Descriptor_entry_too_big, r) { |
| 102 | const size_t size = sizeof(SkDescriptor) + sizeof(SkDescriptor::Entry) + 4; |
| 103 | // Must be less than fLength, but big enough to be bigger then fLength when added. |
| 104 | const size_t effect_size = sizeof(SkDescriptor) + sizeof(SkDescriptor::Entry); |
| 105 | |
| 106 | auto desc = SkDescriptor::Alloc(size); |
Herb Derby | 4a1af26 | 2019-10-24 10:53:53 -0400 | [diff] [blame] | 107 | |
| 108 | desc->addEntry(kEffects_SkDescriptorTag, effect_size, nullptr); |
| 109 | |
| 110 | SkDescriptorTestHelper::SetLength(desc.get(), size); |
| 111 | SkDescriptorTestHelper::SetCount(desc.get(), 2); |
| 112 | REPORTER_ASSERT(r, !desc->isValid()); |
| 113 | |
| 114 | SkDescriptorTestHelper::SetLength(desc.get(), size); |
| 115 | SkDescriptorTestHelper::SetCount(desc.get(), 1); |
| 116 | REPORTER_ASSERT(r, !desc->isValid()); |
| 117 | } |
Herb Derby | 790eff8 | 2019-11-04 12:03:51 -0500 | [diff] [blame] | 118 | |
| 119 | DEF_TEST(Descriptor_entry_over_end, r) { |
| 120 | auto desc = SkDescriptor::Alloc(36); |
Herb Derby | 790eff8 | 2019-11-04 12:03:51 -0500 | [diff] [blame] | 121 | |
| 122 | // Make the start of the Entry be in the SkDescriptor, but the second half falls out side the |
| 123 | // SkDescriptor. So: 12 (for descriptor) + 8 (for entry) + 12 (for entry length) = 32. An |
| 124 | // An Entry is 8 bytes, so 4 bytes are < 36 and 4 bytes > 36. |
| 125 | desc->addEntry(kEffects_SkDescriptorTag, 12, nullptr); |
| 126 | |
| 127 | SkDescriptorTestHelper::SetLength(desc.get(), 36); |
| 128 | SkDescriptorTestHelper::SetCount(desc.get(), 2); |
| 129 | REPORTER_ASSERT(r, !desc->isValid()); |
| 130 | } |