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| 1 // Copyright 2016 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 // TODO(vardhan): Needs a lot more testing. | |
| 6 | |
| 7 #include <mojo/bindings/struct.h> | |
| 8 | |
| 9 #include <mojo/bindings/array.h> | |
| 10 #include <mojo/bindings/internal/util.h> | |
| 11 #include <string.h> | |
| 12 | |
| 13 #include "mojo/public/c/bindings/tests/testing_util.h" | |
| 14 #include "mojo/public/cpp/system/macros.h" | |
| 15 #include "mojo/public/interfaces/bindings/tests/rect.mojom-c.h" | |
| 16 #include "mojo/public/interfaces/bindings/tests/test_structs.mojom-c.h" | |
| 17 #include "mojo/public/interfaces/bindings/tests/test_unions.mojom-c.h" | |
| 18 #include "testing/gtest/include/gtest/gtest.h" | |
| 19 | |
| 20 namespace { | |
| 21 | |
| 22 #define BYTES_LEFT_AFTER_FIELD(type, field) \ | |
| 23 (sizeof(type) - offsetof(type, field)) | |
| 24 | |
| 25 struct mojo_test_Rect* MakeRect(struct MojomBuffer* buf) { | |
| 26 struct mojo_test_Rect* r = static_cast<struct mojo_test_Rect*>( | |
| 27 MojomBuffer_Allocate(buf, sizeof(struct mojo_test_Rect))); | |
| 28 *r = mojo_test_Rect{// header | |
| 29 { | |
| 30 sizeof(struct mojo_test_Rect), 0, | |
| 31 }, | |
| 32 0u, | |
| 33 0u, | |
| 34 0u, | |
| 35 0u}; | |
| 36 return r; | |
| 37 } | |
| 38 | |
| 39 // TODO(vardhan): Move this into string.h/c if it proves useful again. | |
| 40 struct MojomStringHeader* MakeMojomStringFromCString(MojomBuffer* buf, | |
| 41 const char* chars, | |
| 42 size_t num_chars) { | |
| 43 struct MojomArrayHeader* arr = MojomArray_New(buf, num_chars, 1); | |
| 44 assert(NULL != arr); | |
| 45 | |
| 46 memcpy((char*)arr + sizeof(MojomStringHeader), chars, num_chars); | |
| 47 return (struct MojomStringHeader*)arr; | |
| 48 } | |
| 49 | |
| 50 TEST(StructSerializedSizeTest, Basic) { | |
| 51 struct mojo_test_Rect rect = {{ | |
| 52 sizeof(struct mojo_test_Rect), 0, | |
| 53 }, | |
| 54 0u, | |
| 55 0u, | |
| 56 0u, | |
| 57 0u}; | |
| 58 size_t size = mojo_test_Rect_ComputeSerializedSize(&rect); | |
| 59 EXPECT_EQ(8U + 16U, size); | |
| 60 | |
| 61 char buffer_bytes[1000]; | |
| 62 struct MojomBuffer buf = {buffer_bytes, sizeof(buffer_bytes), 0}; | |
| 63 CopyAndCompare(&buf, &rect, sizeof(rect), mojo_test_Rect_DeepCopy, | |
| 64 mojo_test_Rect_EncodePointersAndHandles, | |
| 65 mojo_test_Rect_DecodePointersAndHandles); | |
| 66 } | |
| 67 | |
| 68 TEST(StructSerializationTest, StructOfStructs) { | |
| 69 char buffer_bytes[1000] = {0}; | |
| 70 struct MojomBuffer buf = {buffer_bytes, sizeof(buffer_bytes), 0}; | |
| 71 | |
| 72 struct mojo_test_RectPair* pair = static_cast<struct mojo_test_RectPair*>( | |
| 73 MojomBuffer_Allocate(&buf, sizeof(struct mojo_test_RectPair))); | |
| 74 *pair = mojo_test_RectPair{ | |
| 75 {sizeof(struct mojo_test_RectPair), 0}, | |
| 76 {MakeRect(&buf)}, // first | |
| 77 {MakeRect(&buf)}, // second | |
| 78 }; | |
| 79 | |
| 80 EXPECT_EQ(8U + 16U + 2 * (8U + 16U), | |
| 81 mojo_test_RectPair_ComputeSerializedSize(pair)); | |
| 82 | |
| 83 // We save the underlying (unencoded) buffer. We can compare the two after | |
| 84 // deserialization to make sure deserialization is correct. | |
| 85 char buffer_bytes_copy[sizeof(buffer_bytes)]; | |
| 86 memcpy(buffer_bytes_copy, buffer_bytes, sizeof(buffer_bytes_copy)); | |
| 87 | |
| 88 mojo_test_RectPair_EncodePointersAndHandles(pair, buf.num_bytes_used, NULL); | |
| 89 | |
| 90 EXPECT_EQ(BYTES_LEFT_AFTER_FIELD(struct mojo_test_RectPair, first), | |
| 91 pair->first.offset); | |
| 92 EXPECT_EQ(BYTES_LEFT_AFTER_FIELD(struct mojo_test_RectPair, second) + | |
| 93 sizeof(struct mojo_test_Rect), | |
| 94 pair->second.offset); | |
| 95 | |
| 96 mojo_test_RectPair_DecodePointersAndHandles( | |
| 97 reinterpret_cast<struct mojo_test_RectPair*>(buf.buf), buf.num_bytes_used, | |
| 98 NULL, 0); | |
| 99 EXPECT_EQ(0, memcmp(buf.buf, buffer_bytes_copy, buf.num_bytes_used)); | |
| 100 | |
| 101 { | |
| 102 char buffer_bytes2[1000] = {0}; | |
| 103 struct MojomBuffer buf2 = {buffer_bytes2, sizeof(buffer_bytes2), 0}; | |
| 104 CopyAndCompare(&buf2, pair, buf.num_bytes_used, mojo_test_RectPair_DeepCopy, | |
| 105 mojo_test_RectPair_EncodePointersAndHandles, | |
| 106 mojo_test_RectPair_DecodePointersAndHandles); | |
| 107 } | |
| 108 } | |
| 109 | |
| 110 // Tests a struct that has: | |
| 111 // - nullable string which isn't null. | |
| 112 // - nullable array of rects, which isn't null. | |
| 113 TEST(StructSerializationTest, StructOfArrays) { | |
| 114 char buffer_bytes[1000]; | |
| 115 MojomBuffer buf = {buffer_bytes, sizeof(buffer_bytes), 0}; | |
| 116 | |
| 117 const char* kRegionName = "region"; | |
| 118 | |
| 119 struct mojo_test_NamedRegion* named_region = | |
| 120 static_cast<struct mojo_test_NamedRegion*>( | |
| 121 MojomBuffer_Allocate(&buf, sizeof(struct mojo_test_NamedRegion))); | |
| 122 *named_region = mojo_test_NamedRegion{ | |
| 123 // header | |
| 124 { | |
| 125 sizeof(struct mojo_test_NamedRegion), 0, | |
| 126 }, | |
| 127 {NULL}, | |
| 128 {NULL}, | |
| 129 }; | |
| 130 named_region->name.ptr = | |
| 131 MakeMojomStringFromCString(&buf, kRegionName, strlen(kRegionName)); | |
| 132 // We save a pointer to |rects| so we can use it after it has been encoded | |
| 133 // within |named_region|. | |
| 134 auto rects = MojomArray_New(&buf, 4, sizeof(union mojo_test_RectPtr)); | |
| 135 named_region->rects.ptr = rects; | |
| 136 ASSERT_TRUE(named_region->rects.ptr != NULL); | |
| 137 | |
| 138 MOJOM_ARRAY_INDEX(named_region->rects.ptr, union mojo_test_RectPtr, 0) | |
| 139 ->ptr = MakeRect(&buf); | |
| 140 MOJOM_ARRAY_INDEX(named_region->rects.ptr, union mojo_test_RectPtr, 1) | |
| 141 ->ptr = MakeRect(&buf); | |
| 142 MOJOM_ARRAY_INDEX(named_region->rects.ptr, union mojo_test_RectPtr, 2) | |
| 143 ->ptr = MakeRect(&buf); | |
| 144 MOJOM_ARRAY_INDEX(named_region->rects.ptr, union mojo_test_RectPtr, 3) | |
| 145 ->ptr = MakeRect(&buf); | |
| 146 | |
| 147 size_t size = mojo_test_NamedRegion_ComputeSerializedSize(named_region); | |
| 148 EXPECT_EQ(8U + // header | |
| 149 8U + // name pointer | |
| 150 8U + // rects pointer | |
| 151 8U + // name header | |
| 152 8U + // name payload (rounded up) | |
| 153 8U + // rects header | |
| 154 4 * 8U + // rects payload (four pointers) | |
| 155 4 * (8U + // rect header | |
| 156 16U), // rect payload (four ints) | |
| 157 size); | |
| 158 | |
| 159 char buffer_bytes_copy[sizeof(buffer_bytes)] = {0}; | |
| 160 memcpy(buffer_bytes_copy, buffer_bytes, sizeof(buffer_bytes_copy)); | |
| 161 | |
| 162 mojo_test_NamedRegion_EncodePointersAndHandles(named_region, | |
| 163 buf.num_bytes_used, NULL); | |
| 164 | |
| 165 EXPECT_EQ(BYTES_LEFT_AFTER_FIELD(struct mojo_test_NamedRegion, name), | |
| 166 named_region->name.offset); | |
| 167 EXPECT_EQ(BYTES_LEFT_AFTER_FIELD(struct mojo_test_NamedRegion, rects) + | |
| 168 MOJOM_INTERNAL_ROUND_TO_8(sizeof(struct MojomStringHeader) + | |
| 169 strlen(kRegionName)), | |
| 170 named_region->rects.offset); | |
| 171 | |
| 172 // Test the offsets encoded inside the rect array. | |
| 173 EXPECT_EQ(sizeof(union mojo_test_RectPtr) * 4, | |
| 174 MOJOM_ARRAY_INDEX(rects, union mojo_test_RectPtr, 0)->offset); | |
| 175 EXPECT_EQ(sizeof(union mojo_test_RectPtr) * 3 + sizeof(struct mojo_test_Rect), | |
| 176 MOJOM_ARRAY_INDEX(rects, union mojo_test_RectPtr, 1)->offset); | |
| 177 EXPECT_EQ( | |
| 178 sizeof(union mojo_test_RectPtr) * 2 + sizeof(struct mojo_test_Rect) * 2, | |
| 179 MOJOM_ARRAY_INDEX(rects, union mojo_test_RectPtr, 2)->offset); | |
| 180 EXPECT_EQ(sizeof(union mojo_test_RectPtr) + sizeof(struct mojo_test_Rect) * 3, | |
| 181 MOJOM_ARRAY_INDEX(rects, union mojo_test_RectPtr, 3)->offset); | |
| 182 | |
| 183 mojo_test_NamedRegion_DecodePointersAndHandles( | |
| 184 reinterpret_cast<struct mojo_test_NamedRegion*>(buf.buf), | |
| 185 buf.num_bytes_used, NULL, 0); | |
| 186 EXPECT_EQ(0, memcmp(buf.buf, buffer_bytes_copy, buf.num_bytes_used)); | |
| 187 | |
| 188 { | |
| 189 char buffer_bytes2[sizeof(buffer_bytes)] = {0}; | |
| 190 struct MojomBuffer buf2 = {buffer_bytes2, sizeof(buffer_bytes2), 0}; | |
| 191 CopyAndCompare(&buf2, named_region, buf.num_bytes_used, | |
| 192 mojo_test_NamedRegion_DeepCopy, | |
| 193 mojo_test_NamedRegion_EncodePointersAndHandles, | |
| 194 mojo_test_NamedRegion_DecodePointersAndHandles); | |
| 195 } | |
| 196 } | |
| 197 | |
| 198 // Tests a struct that has: | |
| 199 // - nullable string which is null. | |
| 200 // - nullable array of rects, which is null. | |
| 201 TEST(StructSerializationTest, StructOfNullArrays) { | |
| 202 struct mojo_test_NamedRegion named_region = { | |
| 203 // header | |
| 204 { | |
| 205 sizeof(struct mojo_test_NamedRegion), 0, | |
| 206 }, | |
| 207 {NULL}, | |
| 208 {NULL}, | |
| 209 }; | |
| 210 struct mojo_test_NamedRegion named_region_copy = named_region; | |
| 211 | |
| 212 size_t size = mojo_test_NamedRegion_ComputeSerializedSize(&named_region); | |
| 213 EXPECT_EQ(8U + // header | |
| 214 8U + // name pointer | |
| 215 8U, // rects pointer | |
| 216 size); | |
| 217 | |
| 218 mojo_test_NamedRegion_EncodePointersAndHandles( | |
| 219 &named_region, sizeof(struct mojo_test_NamedRegion), NULL); | |
| 220 EXPECT_EQ(0u, named_region.name.offset); | |
| 221 EXPECT_EQ(0u, named_region.rects.offset); | |
| 222 | |
| 223 mojo_test_NamedRegion_DecodePointersAndHandles( | |
| 224 &named_region, sizeof(struct mojo_test_NamedRegion), NULL, 0); | |
| 225 EXPECT_EQ(0, memcmp(&named_region, &named_region_copy, | |
| 226 sizeof(struct mojo_test_NamedRegion))); | |
| 227 | |
| 228 { | |
| 229 char buffer_bytes2[sizeof(named_region)] = {0}; | |
| 230 struct MojomBuffer buf2 = {buffer_bytes2, sizeof(buffer_bytes2), 0}; | |
| 231 CopyAndCompare(&buf2, &named_region, sizeof(named_region), | |
| 232 mojo_test_NamedRegion_DeepCopy, | |
| 233 mojo_test_NamedRegion_EncodePointersAndHandles, | |
| 234 mojo_test_NamedRegion_DecodePointersAndHandles); | |
| 235 } | |
| 236 } | |
| 237 | |
| 238 TEST(StructSerializationTest, StructOfUnion) { | |
| 239 struct mojo_test_SmallStructNonNullableUnion u = { | |
| 240 // header | |
| 241 { | |
| 242 sizeof(struct mojo_test_SmallStructNonNullableUnion), | |
| 243 0, // version | |
| 244 }, | |
| 245 // PodUnion | |
| 246 { | |
| 247 16ul, // size | |
| 248 mojo_test_PodUnion_Tag_f_int8, // tag, | |
| 249 {0}, // data | |
| 250 }, | |
| 251 }; | |
| 252 | |
| 253 struct mojo_test_SmallStructNonNullableUnion u_null = { | |
| 254 // header | |
| 255 { | |
| 256 sizeof(struct mojo_test_SmallStructNonNullableUnion), | |
| 257 0, // version | |
| 258 }, | |
| 259 // PodUnion | |
| 260 { | |
| 261 0ul, // size | |
| 262 mojo_test_PodUnion_Tag__UNKNOWN__, // tag, | |
| 263 {0}, // data | |
| 264 }, | |
| 265 }; | |
| 266 | |
| 267 EXPECT_EQ(8U + // header | |
| 268 16U, // union | |
| 269 mojo_test_SmallStructNonNullableUnion_ComputeSerializedSize(&u)); | |
| 270 EXPECT_EQ( | |
| 271 8U + // header | |
| 272 16U, // union | |
| 273 mojo_test_SmallStructNonNullableUnion_ComputeSerializedSize(&u_null)); | |
| 274 | |
| 275 // Encoding shouldn't have done anything to these structs (they have no | |
| 276 // pointers or handles): | |
| 277 struct mojo_test_SmallStructNonNullableUnion u_copy = u; | |
| 278 mojo_test_SmallStructNonNullableUnion_EncodePointersAndHandles( | |
| 279 &u, sizeof(struct mojo_test_SmallStructNonNullableUnion), NULL); | |
| 280 EXPECT_EQ(0, memcmp(&u, &u_copy, sizeof(u))); | |
| 281 | |
| 282 // Similarly, decoding shouldn't change the struct at all: | |
| 283 mojo_test_SmallStructNonNullableUnion_DecodePointersAndHandles( | |
| 284 &u, sizeof(struct mojo_test_SmallStructNonNullableUnion), NULL, 0); | |
| 285 EXPECT_EQ(0, memcmp(&u, &u_copy, sizeof(u))); | |
| 286 | |
| 287 struct mojo_test_SmallStructNonNullableUnion u_null_copy = u_null; | |
| 288 mojo_test_SmallStructNonNullableUnion_EncodePointersAndHandles( | |
| 289 &u_null, sizeof(struct mojo_test_SmallStructNonNullableUnion), NULL); | |
| 290 EXPECT_EQ(0, memcmp(&u_null, &u_null_copy, sizeof(u_null))); | |
| 291 | |
| 292 mojo_test_SmallStructNonNullableUnion_DecodePointersAndHandles( | |
| 293 &u_null, sizeof(struct mojo_test_SmallStructNonNullableUnion), NULL, 0); | |
| 294 EXPECT_EQ(0, memcmp(&u_null, &u_null_copy, sizeof(u_null))); | |
| 295 | |
| 296 { | |
| 297 char buffer_bytes[sizeof(u)] = {0}; | |
| 298 struct MojomBuffer buf = {buffer_bytes, sizeof(buffer_bytes), 0}; | |
| 299 CopyAndCompare( | |
| 300 &buf, &u, sizeof(u), mojo_test_SmallStructNonNullableUnion_DeepCopy, | |
| 301 mojo_test_SmallStructNonNullableUnion_EncodePointersAndHandles, | |
| 302 mojo_test_SmallStructNonNullableUnion_DecodePointersAndHandles); | |
| 303 } | |
| 304 } | |
| 305 | |
| 306 TEST(StructSerializationTest, StructWithHandle) { | |
| 307 struct mojo_test_NullableHandleStruct handle_struct = | |
| 308 mojo_test_NullableHandleStruct{ | |
| 309 // header | |
| 310 { | |
| 311 sizeof(struct mojo_test_NullableHandleStruct), 0, | |
| 312 }, | |
| 313 MOJO_HANDLE_INVALID, | |
| 314 13, | |
| 315 }; | |
| 316 | |
| 317 EXPECT_EQ( | |
| 318 sizeof(struct mojo_test_NullableHandleStruct), | |
| 319 mojo_test_NullableHandleStruct_ComputeSerializedSize(&handle_struct)); | |
| 320 | |
| 321 MojoHandle handles[1]; | |
| 322 struct MojomHandleBuffer handle_buf = {handles, MOJO_ARRAYSIZE(handles), 0u}; | |
| 323 mojo_test_NullableHandleStruct_EncodePointersAndHandles( | |
| 324 &handle_struct, sizeof(struct mojo_test_NullableHandleStruct), | |
| 325 &handle_buf); | |
| 326 EXPECT_EQ(0u, handle_buf.num_handles_used); | |
| 327 EXPECT_EQ(static_cast<MojoHandle>(-1), handle_struct.h); | |
| 328 | |
| 329 mojo_test_NullableHandleStruct_DecodePointersAndHandles( | |
| 330 &handle_struct, sizeof(struct mojo_test_NullableHandleStruct), handles, | |
| 331 MOJO_ARRAYSIZE(handles)); | |
| 332 EXPECT_EQ(MOJO_HANDLE_INVALID, handle_struct.h); | |
| 333 | |
| 334 handle_struct.h = 123; | |
| 335 mojo_test_NullableHandleStruct_EncodePointersAndHandles( | |
| 336 &handle_struct, sizeof(struct mojo_test_NullableHandleStruct), | |
| 337 &handle_buf); | |
| 338 EXPECT_EQ(1u, handle_buf.num_handles_used); | |
| 339 EXPECT_EQ(static_cast<MojoHandle>(0), handle_struct.h); | |
| 340 EXPECT_EQ(static_cast<MojoHandle>(123), handles[0]); | |
| 341 | |
| 342 mojo_test_NullableHandleStruct_DecodePointersAndHandles( | |
| 343 &handle_struct, sizeof(struct mojo_test_NullableHandleStruct), handles, | |
| 344 MOJO_ARRAYSIZE(handles)); | |
| 345 EXPECT_EQ(static_cast<MojoHandle>(123), handle_struct.h); | |
| 346 EXPECT_EQ(MOJO_HANDLE_INVALID, handles[0]); | |
| 347 | |
| 348 { | |
| 349 char buffer_bytes[1000] = {0}; | |
| 350 struct MojomBuffer buf = {buffer_bytes, 4, 0}; | |
| 351 auto* copied_struct = | |
| 352 mojo_test_NullableHandleStruct_DeepCopy(&buf, &handle_struct); | |
| 353 // Not enough space: | |
| 354 ASSERT_FALSE(copied_struct); | |
| 355 buf.buf_size = sizeof(buffer_bytes); | |
| 356 copied_struct = | |
| 357 mojo_test_NullableHandleStruct_DeepCopy(&buf, &handle_struct); | |
| 358 ASSERT_TRUE(copied_struct); | |
| 359 // The old and the new copy should both have the handles. | |
| 360 EXPECT_EQ(static_cast<MojoHandle>(123), handle_struct.h); | |
| 361 EXPECT_EQ(static_cast<MojoHandle>(123), copied_struct->h); | |
| 362 } | |
| 363 } | |
| 364 | |
| 365 } // namespace | |
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Chromium Code Reviews
Issue 2234063002:
Move the C bindings tests to the new location. (Closed)
Base URL: https://github.com/domokit/mojo.git@work791_mojo_bindings