openvcdiff | 311c714 | 2008-08-26 19:29:25 +0000 | [diff] [blame] | 1 | // Copyright 2008 Google Inc. |
| 2 | // Author: Lincoln Smith |
| 3 | // |
| 4 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | // you may not use this file except in compliance with the License. |
| 6 | // You may obtain a copy of the License at |
| 7 | // |
| 8 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | // |
| 10 | // Unless required by applicable law or agreed to in writing, software |
| 11 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | // See the License for the specific language governing permissions and |
| 14 | // limitations under the License. |
| 15 | |
| 16 | #include <config.h> |
| 17 | #include "google/vcdecoder.h" |
openvcdiff | 311c714 | 2008-08-26 19:29:25 +0000 | [diff] [blame] | 18 | #include "testing.h" |
| 19 | #include "vcdecoder_test.h" |
| 20 | #include "vcdiff_defs.h" // VCD_SOURCE |
| 21 | |
| 22 | namespace open_vcdiff { |
| 23 | |
openvcdiff | 311c714 | 2008-08-26 19:29:25 +0000 | [diff] [blame] | 24 | // These are the same tests as for VCDiffStandardDecoderTest, with the added |
| 25 | // complication that instead of calling DecodeChunk() once with the entire data |
| 26 | // set, DecodeChunk() is called once for each byte of input. This is intended |
| 27 | // to shake out any bugs with rewind and resume while parsing chunked data. |
| 28 | |
| 29 | typedef VCDiffStandardDecoderTest VCDiffStandardDecoderTestByteByByte; |
| 30 | |
| 31 | TEST_F(VCDiffStandardDecoderTestByteByByte, DecodeHeaderOnly) { |
| 32 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 33 | for (size_t i = 0; i < delta_file_header_.size(); ++i) { |
| 34 | EXPECT_TRUE(decoder_.DecodeChunk(&delta_file_header_[i], 1, &output_)); |
| 35 | } |
| 36 | EXPECT_TRUE(decoder_.FinishDecoding()); |
| 37 | EXPECT_EQ("", output_); |
| 38 | } |
| 39 | |
| 40 | TEST_F(VCDiffStandardDecoderTestByteByByte, Decode) { |
| 41 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 42 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 43 | EXPECT_TRUE(decoder_.DecodeChunk(&delta_file_[i], 1, &output_)); |
| 44 | } |
| 45 | EXPECT_TRUE(decoder_.FinishDecoding()); |
| 46 | EXPECT_EQ(expected_target_, output_); |
| 47 | } |
| 48 | |
| 49 | // Remove one byte from the length of the chunk to process, and |
| 50 | // verify that an error is returned for FinishDecoding(). |
| 51 | TEST_F(VCDiffStandardDecoderTestByteByByte, FinishAfterDecodingPartialWindow) { |
| 52 | delta_file_.resize(delta_file_.size() - 1); |
| 53 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 54 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 55 | EXPECT_TRUE(decoder_.DecodeChunk(&delta_file_[i], 1, &output_)); |
| 56 | } |
| 57 | EXPECT_FALSE(decoder_.FinishDecoding()); |
| 58 | // The decoder should not create more target bytes than were expected. |
| 59 | EXPECT_GE(expected_target_.size(), output_.size()); |
| 60 | } |
| 61 | |
| 62 | TEST_F(VCDiffStandardDecoderTestByteByByte, |
| 63 | FinishAfterDecodingPartialWindowHeader) { |
| 64 | delta_file_.resize(delta_file_header_.size() |
| 65 | + delta_window_header_.size() - 1); |
| 66 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 67 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 68 | EXPECT_TRUE(decoder_.DecodeChunk(&delta_file_[i], 1, &output_)); |
| 69 | } |
| 70 | EXPECT_FALSE(decoder_.FinishDecoding()); |
| 71 | EXPECT_EQ("", output_); |
| 72 | } |
| 73 | |
| 74 | // If we add a checksum to a standard-format delta file (without using format |
| 75 | // extensions), it will be interpreted as random bytes inserted into the middle |
| 76 | // of the file. The decode operation should fail, but where exactly it fails is |
| 77 | // undefined. |
| 78 | TEST_F(VCDiffStandardDecoderTestByteByByte, |
| 79 | StandardFormatDoesNotSupportChecksum) { |
| 80 | ComputeAndAddChecksum(); |
| 81 | InitializeDeltaFile(); |
| 82 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 83 | bool failed = false; |
| 84 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 85 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 86 | failed = true; |
| 87 | break; |
| 88 | } |
| 89 | } |
| 90 | EXPECT_TRUE(failed); |
| 91 | // The decoder should not create more target bytes than were expected. |
| 92 | EXPECT_GE(expected_target_.size(), output_.size()); |
| 93 | } |
| 94 | |
openvcdiff | 28db807 | 2008-10-10 23:29:11 +0000 | [diff] [blame^] | 95 | TEST_F(VCDiffStandardDecoderTestByteByByte, TargetMatchesWindowSizeLimit) { |
| 96 | decoder_.SetMaximumTargetWindowSize(expected_target_.size()); |
| 97 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 98 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 99 | EXPECT_TRUE(decoder_.DecodeChunk(&delta_file_[i], 1, &output_)); |
| 100 | } |
| 101 | EXPECT_TRUE(decoder_.FinishDecoding()); |
| 102 | EXPECT_EQ(expected_target_, output_); |
| 103 | } |
| 104 | |
| 105 | TEST_F(VCDiffStandardDecoderTestByteByByte, TargetMatchesFileSizeLimit) { |
| 106 | decoder_.SetMaximumTargetFileSize(expected_target_.size()); |
| 107 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 108 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 109 | EXPECT_TRUE(decoder_.DecodeChunk(&delta_file_[i], 1, &output_)); |
| 110 | } |
| 111 | EXPECT_TRUE(decoder_.FinishDecoding()); |
| 112 | EXPECT_EQ(expected_target_, output_); |
| 113 | } |
| 114 | |
| 115 | TEST_F(VCDiffStandardDecoderTestByteByByte, TargetExceedsWindowSizeLimit) { |
| 116 | decoder_.SetMaximumTargetWindowSize(expected_target_.size() - 1); |
| 117 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 118 | bool failed = false; |
| 119 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 120 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 121 | failed = true; |
| 122 | break; |
| 123 | } |
| 124 | } |
| 125 | EXPECT_TRUE(failed); |
| 126 | EXPECT_EQ("", output_); |
| 127 | } |
| 128 | |
| 129 | TEST_F(VCDiffStandardDecoderTestByteByByte, TargetExceedsFileSizeLimit) { |
| 130 | decoder_.SetMaximumTargetFileSize(expected_target_.size() - 1); |
| 131 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 132 | bool failed = false; |
| 133 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 134 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 135 | failed = true; |
| 136 | break; |
| 137 | } |
| 138 | } |
| 139 | EXPECT_TRUE(failed); |
| 140 | EXPECT_EQ("", output_); |
| 141 | } |
| 142 | |
openvcdiff | 311c714 | 2008-08-26 19:29:25 +0000 | [diff] [blame] | 143 | // Fuzz bits to make sure decoder does not violently crash. |
| 144 | // This test has no expected behavior except that no crashes should occur. |
| 145 | // In some cases, changing bits will still decode to the correct target; |
| 146 | // for example, changing unused bits within a bitfield. |
| 147 | TEST_F(VCDiffStandardDecoderTestByteByByte, FuzzBits) { |
| 148 | while (FuzzOneByteInDeltaFile()) { |
| 149 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 150 | bool failed = false; |
| 151 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 152 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 153 | failed = true; |
| 154 | break; |
| 155 | } |
| 156 | } |
| 157 | if (!failed) { |
| 158 | decoder_.FinishDecoding(); |
| 159 | } |
| 160 | // The decoder should not create more target bytes than were expected. |
| 161 | EXPECT_GE(expected_target_.size(), output_.size()); |
| 162 | InitializeDeltaFile(); |
| 163 | output_.clear(); |
| 164 | } |
| 165 | } |
| 166 | |
| 167 | TEST_F(VCDiffStandardDecoderTestByteByByte, CheckAnnotatedOutput) { |
| 168 | decoder_.EnableAnnotatedOutput(); |
| 169 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 170 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 171 | EXPECT_TRUE(decoder_.DecodeChunk(&delta_file_[i], 1, &output_)); |
| 172 | } |
| 173 | EXPECT_TRUE(decoder_.FinishDecoding()); |
| 174 | string annotated_output; |
| 175 | decoder_.GetAnnotatedOutput(&annotated_output); |
| 176 | EXPECT_EQ(expected_annotated_target_, annotated_output); |
| 177 | } |
| 178 | |
| 179 | // Change each element of the delta file window to an erroneous value |
| 180 | // and make sure it's caught as an error. |
| 181 | |
| 182 | TEST_F(VCDiffStandardDecoderTestByteByByte, |
| 183 | WinIndicatorHasBothSourceAndTarget) { |
| 184 | delta_file_[delta_file_header_.size()] = VCD_SOURCE + VCD_TARGET; |
| 185 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 186 | bool failed = false; |
| 187 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 188 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 189 | failed = true; |
| 190 | // It should fail at the position that was altered |
| 191 | EXPECT_EQ(delta_file_header_.size(), i); |
| 192 | break; |
| 193 | } |
| 194 | } |
| 195 | EXPECT_TRUE(failed); |
| 196 | EXPECT_EQ("", output_); |
| 197 | } |
| 198 | |
| 199 | TEST_F(VCDiffStandardDecoderTestByteByByte, OkayToSetUpperBitsOfWinIndicator) { |
| 200 | // It is not an error to set any of the other bits in Win_Indicator |
| 201 | // besides VCD_SOURCE and VCD_TARGET. |
| 202 | delta_file_[delta_file_header_.size()] = 0xFD; |
| 203 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 204 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 205 | EXPECT_TRUE(decoder_.DecodeChunk(&delta_file_[i], 1, &output_)); |
| 206 | } |
| 207 | EXPECT_TRUE(decoder_.FinishDecoding()); |
| 208 | EXPECT_EQ(expected_target_, output_); |
| 209 | } |
| 210 | |
| 211 | TEST_F(VCDiffStandardDecoderTestByteByByte, |
| 212 | CopyInstructionsShouldFailIfNoSourceSegment) { |
| 213 | // Replace the Win_Indicator and the source size and source offset with a |
| 214 | // single 0 byte (a Win_Indicator for a window with no source segment.) |
| 215 | delta_window_header_.replace(0, 4, "\0", 1); |
| 216 | InitializeDeltaFile(); |
| 217 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 218 | bool failed = false; |
| 219 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 220 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 221 | failed = true; |
| 222 | // The first COPY instruction should fail. With the standard format, |
| 223 | // it may need to see the whole delta window before knowing that it is |
| 224 | // invalid. |
| 225 | break; |
| 226 | } |
| 227 | } |
| 228 | EXPECT_TRUE(failed); |
| 229 | EXPECT_EQ("", output_); |
| 230 | } |
| 231 | |
| 232 | TEST_F(VCDiffStandardDecoderTestByteByByte, |
| 233 | SourceSegmentSizeExceedsDictionarySize) { |
| 234 | ++delta_file_[delta_file_header_.size() + 2]; // increment size |
| 235 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 236 | bool failed = false; |
| 237 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 238 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 239 | failed = true; |
| 240 | // It should fail after decoding the source segment size |
| 241 | EXPECT_EQ(delta_file_header_.size() + 2, i); |
| 242 | break; |
| 243 | } |
| 244 | } |
| 245 | EXPECT_TRUE(failed); |
| 246 | EXPECT_EQ("", output_); |
| 247 | } |
| 248 | |
| 249 | TEST_F(VCDiffStandardDecoderTestByteByByte, SourceSegmentSizeMaxInt) { |
| 250 | WriteMaxVarintAtOffset(1, 2); |
| 251 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 252 | bool failed = false; |
| 253 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 254 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 255 | failed = true; |
| 256 | // It should fail after decoding the source segment size |
| 257 | EXPECT_EQ(delta_file_header_.size() + 5, i); |
| 258 | break; |
| 259 | } |
| 260 | } |
| 261 | EXPECT_TRUE(failed); |
| 262 | EXPECT_EQ("", output_); |
| 263 | } |
| 264 | |
| 265 | TEST_F(VCDiffStandardDecoderTestByteByByte, SourceSegmentSizeNegative) { |
| 266 | WriteNegativeVarintAtOffset(1, 2); |
| 267 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 268 | bool failed = false; |
| 269 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 270 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 271 | failed = true; |
| 272 | // It should fail after decoding the source segment size |
| 273 | EXPECT_EQ(delta_file_header_.size() + 5, i); |
| 274 | break; |
| 275 | } |
| 276 | } |
| 277 | EXPECT_TRUE(failed); |
| 278 | EXPECT_EQ("", output_); |
| 279 | } |
| 280 | |
| 281 | TEST_F(VCDiffStandardDecoderTestByteByByte, SourceSegmentSizeInvalid) { |
| 282 | WriteInvalidVarintAtOffset(1, 2); |
| 283 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 284 | bool failed = false; |
| 285 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 286 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 287 | failed = true; |
| 288 | // It should fail after decoding the source segment size |
| 289 | EXPECT_GE(delta_file_header_.size() + 6, i); |
| 290 | break; |
| 291 | } |
| 292 | } |
| 293 | EXPECT_TRUE(failed); |
| 294 | EXPECT_EQ("", output_); |
| 295 | } |
| 296 | |
| 297 | TEST_F(VCDiffStandardDecoderTestByteByByte, |
| 298 | SourceSegmentEndExceedsDictionarySize) { |
| 299 | ++delta_file_[delta_file_header_.size() + 3]; // increment start pos |
| 300 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 301 | bool failed = false; |
| 302 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 303 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 304 | failed = true; |
| 305 | // It should fail after decoding the source segment end |
| 306 | EXPECT_EQ(delta_file_header_.size() + 3, i); |
| 307 | break; |
| 308 | } |
| 309 | } |
| 310 | EXPECT_TRUE(failed); |
| 311 | EXPECT_EQ("", output_); |
| 312 | } |
| 313 | |
| 314 | TEST_F(VCDiffStandardDecoderTestByteByByte, SourceSegmentPosMaxInt) { |
| 315 | WriteMaxVarintAtOffset(3, 1); |
| 316 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 317 | bool failed = false; |
| 318 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 319 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 320 | failed = true; |
| 321 | // It should fail after decoding the source segment pos |
| 322 | EXPECT_EQ(delta_file_header_.size() + 7, i); |
| 323 | break; |
| 324 | } |
| 325 | } |
| 326 | EXPECT_TRUE(failed); |
| 327 | EXPECT_EQ("", output_); |
| 328 | } |
| 329 | |
| 330 | TEST_F(VCDiffStandardDecoderTestByteByByte, SourceSegmentPosNegative) { |
| 331 | WriteNegativeVarintAtOffset(3, 1); |
| 332 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 333 | bool failed = false; |
| 334 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 335 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 336 | failed = true; |
| 337 | // It should fail after decoding the source segment pos |
| 338 | EXPECT_EQ(delta_file_header_.size() + 7, i); |
| 339 | break; |
| 340 | } |
| 341 | } |
| 342 | EXPECT_TRUE(failed); |
| 343 | EXPECT_EQ("", output_); |
| 344 | } |
| 345 | |
| 346 | TEST_F(VCDiffStandardDecoderTestByteByByte, SourceSegmentPosInvalid) { |
| 347 | WriteInvalidVarintAtOffset(3, 1); |
| 348 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 349 | bool failed = false; |
| 350 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 351 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 352 | failed = true; |
| 353 | // It should fail after decoding the source segment pos |
| 354 | EXPECT_GE(delta_file_header_.size() + 8, i); |
| 355 | break; |
| 356 | } |
| 357 | } |
| 358 | EXPECT_TRUE(failed); |
| 359 | EXPECT_EQ("", output_); |
| 360 | } |
| 361 | |
| 362 | TEST_F(VCDiffStandardDecoderTestByteByByte, DeltaEncodingLengthZero) { |
| 363 | delta_file_[delta_file_header_.size() + 4] = 0; |
| 364 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 365 | bool failed = false; |
| 366 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 367 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 368 | failed = true; |
| 369 | // It should fail after decoding the copy address segment size |
| 370 | EXPECT_EQ(delta_file_header_.size() + 10, i); |
| 371 | break; |
| 372 | } |
| 373 | } |
| 374 | EXPECT_TRUE(failed); |
| 375 | EXPECT_EQ("", output_); |
| 376 | } |
| 377 | |
| 378 | TEST_F(VCDiffStandardDecoderTestByteByByte, DeltaEncodingLengthTooLargeByOne) { |
| 379 | ++delta_file_[delta_file_header_.size() + 4]; |
| 380 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 381 | bool failed = false; |
| 382 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 383 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 384 | failed = true; |
| 385 | // It should fail after decoding the copy address segment size |
| 386 | EXPECT_EQ(delta_file_header_.size() + 10, i); |
| 387 | break; |
| 388 | } |
| 389 | } |
| 390 | EXPECT_TRUE(failed); |
| 391 | EXPECT_EQ("", output_); |
| 392 | } |
| 393 | |
| 394 | TEST_F(VCDiffStandardDecoderTestByteByByte, DeltaEncodingLengthTooSmallByOne) { |
| 395 | --delta_file_[delta_file_header_.size() + 4]; |
| 396 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 397 | bool failed = false; |
| 398 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 399 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 400 | failed = true; |
| 401 | // It should fail after decoding the copy address segment size |
| 402 | EXPECT_EQ(delta_file_header_.size() + 10, i); |
| 403 | break; |
| 404 | } |
| 405 | } |
| 406 | EXPECT_TRUE(failed); |
| 407 | EXPECT_EQ("", output_); |
| 408 | } |
| 409 | |
| 410 | TEST_F(VCDiffStandardDecoderTestByteByByte, DeltaEncodingLengthMaxInt) { |
| 411 | WriteMaxVarintAtOffset(4, 1); |
| 412 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 413 | bool failed = false; |
| 414 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 415 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 416 | failed = true; |
| 417 | // It should fail before finishing the window header |
| 418 | EXPECT_GE(delta_file_header_.size() + delta_window_header_.size() + 4, |
| 419 | i); |
| 420 | break; |
| 421 | } |
| 422 | } |
| 423 | EXPECT_TRUE(failed); |
| 424 | EXPECT_EQ("", output_); |
| 425 | } |
| 426 | |
| 427 | TEST_F(VCDiffStandardDecoderTestByteByByte, DeltaEncodingLengthNegative) { |
| 428 | WriteNegativeVarintAtOffset(4, 1); |
| 429 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 430 | bool failed = false; |
| 431 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 432 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 433 | failed = true; |
| 434 | // It should fail after decoding the delta encoding length |
| 435 | EXPECT_EQ(delta_file_header_.size() + 8, i); |
| 436 | break; |
| 437 | } |
| 438 | } |
| 439 | EXPECT_TRUE(failed); |
| 440 | EXPECT_EQ("", output_); |
| 441 | } |
| 442 | |
| 443 | TEST_F(VCDiffStandardDecoderTestByteByByte, DeltaEncodingLengthInvalid) { |
| 444 | WriteInvalidVarintAtOffset(4, 1); |
| 445 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 446 | bool failed = false; |
| 447 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 448 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 449 | failed = true; |
| 450 | // It should fail after decoding the delta encoding length |
| 451 | EXPECT_GE(delta_file_header_.size() + 9, i); |
| 452 | break; |
| 453 | } |
| 454 | } |
| 455 | EXPECT_TRUE(failed); |
| 456 | EXPECT_EQ("", output_); |
| 457 | } |
| 458 | |
| 459 | TEST_F(VCDiffStandardDecoderTestByteByByte, TargetWindowSizeZero) { |
| 460 | static const char zero_size[] = { 0x00 }; |
| 461 | delta_file_.replace(delta_file_header_.size() + 5, 2, zero_size, 1); |
| 462 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 463 | bool failed = false; |
| 464 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 465 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 466 | failed = true; |
| 467 | break; |
| 468 | } |
| 469 | } |
| 470 | EXPECT_TRUE(failed); |
| 471 | EXPECT_EQ("", output_); |
| 472 | } |
| 473 | |
| 474 | TEST_F(VCDiffStandardDecoderTestByteByByte, TargetWindowSizeTooLargeByOne) { |
| 475 | ++delta_file_[delta_file_header_.size() + 6]; |
| 476 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 477 | bool failed = false; |
| 478 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 479 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 480 | failed = true; |
| 481 | break; |
| 482 | } |
| 483 | } |
| 484 | EXPECT_TRUE(failed); |
| 485 | // The decoder should not create more target bytes than were expected. |
| 486 | EXPECT_GE(expected_target_.size(), output_.size()); |
| 487 | } |
| 488 | |
| 489 | TEST_F(VCDiffStandardDecoderTestByteByByte, TargetWindowSizeTooSmallByOne) { |
| 490 | --delta_file_[delta_file_header_.size() + 6]; |
| 491 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 492 | bool failed = false; |
| 493 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 494 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 495 | failed = true; |
| 496 | break; |
| 497 | } |
| 498 | } |
| 499 | EXPECT_TRUE(failed); |
| 500 | // The decoder should not create more target bytes than were expected. |
| 501 | EXPECT_GE(expected_target_.size(), output_.size()); |
| 502 | } |
| 503 | |
| 504 | TEST_F(VCDiffStandardDecoderTestByteByByte, TargetWindowSizeMaxInt) { |
| 505 | WriteMaxVarintAtOffset(5, 2); |
| 506 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 507 | bool failed = false; |
| 508 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 509 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 510 | failed = true; |
| 511 | // It should fail after decoding the target window size |
| 512 | EXPECT_EQ(delta_file_header_.size() + 9, i); |
| 513 | break; |
| 514 | } |
| 515 | } |
| 516 | EXPECT_TRUE(failed); |
| 517 | EXPECT_EQ("", output_); |
| 518 | } |
| 519 | |
| 520 | TEST_F(VCDiffStandardDecoderTestByteByByte, TargetWindowSizeNegative) { |
| 521 | WriteNegativeVarintAtOffset(5, 2); |
| 522 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 523 | bool failed = false; |
| 524 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 525 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 526 | failed = true; |
| 527 | // It should fail after decoding the target window size |
| 528 | EXPECT_EQ(delta_file_header_.size() + 9, i); |
| 529 | break; |
| 530 | } |
| 531 | } |
| 532 | EXPECT_TRUE(failed); |
| 533 | EXPECT_EQ("", output_); |
| 534 | } |
| 535 | |
| 536 | TEST_F(VCDiffStandardDecoderTestByteByByte, TargetWindowSizeInvalid) { |
| 537 | WriteInvalidVarintAtOffset(5, 2); |
| 538 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 539 | bool failed = false; |
| 540 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 541 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 542 | failed = true; |
| 543 | // It should fail after decoding the target window size |
| 544 | EXPECT_GE(delta_file_header_.size() + 10, i); |
| 545 | break; |
| 546 | } |
| 547 | } |
| 548 | EXPECT_TRUE(failed); |
| 549 | EXPECT_EQ("", output_); |
| 550 | } |
| 551 | |
| 552 | TEST_F(VCDiffStandardDecoderTestByteByByte, |
| 553 | OkayToSetUpperBitsOfDeltaIndicator) { |
| 554 | delta_file_[delta_file_header_.size() + 7] = 0xF8; |
| 555 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 556 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 557 | EXPECT_TRUE(decoder_.DecodeChunk(&delta_file_[i], 1, &output_)); |
| 558 | } |
| 559 | EXPECT_TRUE(decoder_.FinishDecoding()); |
| 560 | EXPECT_EQ(expected_target_, output_); |
| 561 | } |
| 562 | |
| 563 | TEST_F(VCDiffStandardDecoderTestByteByByte, DataCompressionNotSupported) { |
| 564 | delta_file_[delta_file_header_.size() + 7] = 0x01; |
| 565 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 566 | bool failed = false; |
| 567 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 568 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 569 | failed = true; |
| 570 | // It should fail after decoding the delta indicator |
| 571 | EXPECT_EQ(delta_file_header_.size() + 7, i); |
| 572 | break; |
| 573 | } |
| 574 | } |
| 575 | EXPECT_TRUE(failed); |
| 576 | EXPECT_EQ("", output_); |
| 577 | } |
| 578 | |
| 579 | TEST_F(VCDiffStandardDecoderTestByteByByte, |
| 580 | InstructionCompressionNotSupported) { |
| 581 | delta_file_[delta_file_header_.size() + 7] = 0x02; |
| 582 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 583 | bool failed = false; |
| 584 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 585 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 586 | failed = true; |
| 587 | // It should fail after decoding the delta indicator |
| 588 | EXPECT_EQ(delta_file_header_.size() + 7, i); |
| 589 | break; |
| 590 | } |
| 591 | } |
| 592 | EXPECT_TRUE(failed); |
| 593 | EXPECT_EQ("", output_); |
| 594 | } |
| 595 | |
| 596 | TEST_F(VCDiffStandardDecoderTestByteByByte, AddressCompressionNotSupported) { |
| 597 | delta_file_[delta_file_header_.size() + 7] = 0x04; |
| 598 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 599 | bool failed = false; |
| 600 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 601 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 602 | failed = true; |
| 603 | // It should fail after decoding the delta indicator |
| 604 | EXPECT_EQ(delta_file_header_.size() + 7, i); |
| 605 | break; |
| 606 | } |
| 607 | } |
| 608 | EXPECT_TRUE(failed); |
| 609 | EXPECT_EQ("", output_); |
| 610 | } |
| 611 | |
| 612 | TEST_F(VCDiffStandardDecoderTestByteByByte, AddRunDataSizeZero) { |
| 613 | delta_file_[delta_file_header_.size() + 8] = 0; |
| 614 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 615 | bool failed = false; |
| 616 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 617 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 618 | failed = true; |
| 619 | // It should fail after decoding the copy address segment size |
| 620 | EXPECT_EQ(delta_file_header_.size() + 10, i); |
| 621 | break; |
| 622 | } |
| 623 | } |
| 624 | EXPECT_TRUE(failed); |
| 625 | EXPECT_EQ("", output_); |
| 626 | } |
| 627 | |
| 628 | TEST_F(VCDiffStandardDecoderTestByteByByte, AddRunDataSizeTooLargeByOne) { |
| 629 | ++delta_file_[delta_file_header_.size() + 8]; |
| 630 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 631 | bool failed = false; |
| 632 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 633 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 634 | failed = true; |
| 635 | // It should fail after decoding the copy address segment size |
| 636 | EXPECT_EQ(delta_file_header_.size() + 10, i); |
| 637 | break; |
| 638 | } |
| 639 | } |
| 640 | EXPECT_TRUE(failed); |
| 641 | EXPECT_EQ("", output_); |
| 642 | } |
| 643 | |
| 644 | TEST_F(VCDiffStandardDecoderTestByteByByte, AddRunDataSizeTooSmallByOne) { |
| 645 | --delta_file_[delta_file_header_.size() + 8]; |
| 646 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 647 | bool failed = false; |
| 648 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 649 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 650 | failed = true; |
| 651 | // It should fail after decoding the copy address segment size |
| 652 | EXPECT_EQ(delta_file_header_.size() + 10, i); |
| 653 | break; |
| 654 | } |
| 655 | } |
| 656 | EXPECT_TRUE(failed); |
| 657 | EXPECT_EQ("", output_); |
| 658 | } |
| 659 | |
| 660 | TEST_F(VCDiffStandardDecoderTestByteByByte, AddRunDataSizeMaxInt) { |
| 661 | WriteMaxVarintAtOffset(8, 1); |
| 662 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 663 | bool failed = false; |
| 664 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 665 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 666 | failed = true; |
| 667 | // It should fail before finishing the window header |
| 668 | EXPECT_GE(delta_file_header_.size() + delta_window_header_.size() + 4, |
| 669 | i); |
| 670 | break; |
| 671 | } |
| 672 | } |
| 673 | EXPECT_TRUE(failed); |
| 674 | EXPECT_EQ("", output_); |
| 675 | } |
| 676 | |
| 677 | TEST_F(VCDiffStandardDecoderTestByteByByte, AddRunDataSizeNegative) { |
| 678 | WriteNegativeVarintAtOffset(8, 1); |
| 679 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 680 | bool failed = false; |
| 681 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 682 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 683 | failed = true; |
| 684 | // It should fail after decoding the add/run data segment size |
| 685 | EXPECT_EQ(delta_file_header_.size() + 12, i); |
| 686 | break; |
| 687 | } |
| 688 | } |
| 689 | EXPECT_TRUE(failed); |
| 690 | EXPECT_EQ("", output_); |
| 691 | } |
| 692 | |
| 693 | TEST_F(VCDiffStandardDecoderTestByteByByte, AddRunDataSizeInvalid) { |
| 694 | WriteInvalidVarintAtOffset(8, 1); |
| 695 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 696 | bool failed = false; |
| 697 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 698 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 699 | failed = true; |
| 700 | // It should fail after decoding the add/run data segment size |
| 701 | EXPECT_GE(delta_file_header_.size() + 13, i); |
| 702 | break; |
| 703 | } |
| 704 | } |
| 705 | EXPECT_TRUE(failed); |
| 706 | EXPECT_EQ("", output_); |
| 707 | } |
| 708 | |
| 709 | TEST_F(VCDiffStandardDecoderTestByteByByte, InstructionsSizeZero) { |
| 710 | delta_file_[delta_file_header_.size() + 9] = 0; |
| 711 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 712 | bool failed = false; |
| 713 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 714 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 715 | failed = true; |
| 716 | // It should fail after decoding the copy address segment size |
| 717 | EXPECT_EQ(delta_file_header_.size() + 10, i); |
| 718 | break; |
| 719 | } |
| 720 | } |
| 721 | EXPECT_TRUE(failed); |
| 722 | EXPECT_EQ("", output_); |
| 723 | } |
| 724 | |
| 725 | TEST_F(VCDiffStandardDecoderTestByteByByte, InstructionsSizeTooLargeByOne) { |
| 726 | ++delta_file_[delta_file_header_.size() + 9]; |
| 727 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 728 | bool failed = false; |
| 729 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 730 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 731 | failed = true; |
| 732 | // It should fail after decoding the copy address segment size |
| 733 | EXPECT_EQ(delta_file_header_.size() + 10, i); |
| 734 | break; |
| 735 | } |
| 736 | } |
| 737 | EXPECT_TRUE(failed); |
| 738 | EXPECT_EQ("", output_); |
| 739 | } |
| 740 | |
| 741 | TEST_F(VCDiffStandardDecoderTestByteByByte, InstructionsSizeTooSmallByOne) { |
| 742 | --delta_file_[delta_file_header_.size() + 9]; |
| 743 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 744 | bool failed = false; |
| 745 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 746 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 747 | failed = true; |
| 748 | // It should fail after decoding the copy address segment size |
| 749 | EXPECT_EQ(delta_file_header_.size() + 10, i); |
| 750 | break; |
| 751 | } |
| 752 | } |
| 753 | EXPECT_TRUE(failed); |
| 754 | EXPECT_EQ("", output_); |
| 755 | } |
| 756 | |
| 757 | TEST_F(VCDiffStandardDecoderTestByteByByte, InstructionsSizeMaxInt) { |
| 758 | WriteMaxVarintAtOffset(9, 1); |
| 759 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 760 | bool failed = false; |
| 761 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 762 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 763 | failed = true; |
| 764 | // It should fail before finishing the window header |
| 765 | EXPECT_GE(delta_file_header_.size() + delta_window_header_.size() + 4, |
| 766 | i); |
| 767 | break; |
| 768 | } |
| 769 | } |
| 770 | EXPECT_TRUE(failed); |
| 771 | EXPECT_EQ("", output_); |
| 772 | } |
| 773 | |
| 774 | TEST_F(VCDiffStandardDecoderTestByteByByte, InstructionsSizeNegative) { |
| 775 | WriteNegativeVarintAtOffset(9, 1); |
| 776 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 777 | bool failed = false; |
| 778 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 779 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 780 | failed = true; |
| 781 | // It should fail after decoding the instructions segment size |
| 782 | EXPECT_EQ(delta_file_header_.size() + 13, i); |
| 783 | break; |
| 784 | } |
| 785 | } |
| 786 | EXPECT_TRUE(failed); |
| 787 | EXPECT_EQ("", output_); |
| 788 | } |
| 789 | |
| 790 | TEST_F(VCDiffStandardDecoderTestByteByByte, InstructionsSizeInvalid) { |
| 791 | WriteInvalidVarintAtOffset(9, 1); |
| 792 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 793 | bool failed = false; |
| 794 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 795 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 796 | failed = true; |
| 797 | // It should fail after decoding the instructions segment size |
| 798 | EXPECT_GE(delta_file_header_.size() + 14, i); |
| 799 | break; |
| 800 | } |
| 801 | } |
| 802 | EXPECT_TRUE(failed); |
| 803 | EXPECT_EQ("", output_); |
| 804 | } |
| 805 | |
| 806 | TEST_F(VCDiffStandardDecoderTestByteByByte, CopyAddressSizeZero) { |
| 807 | delta_file_[delta_file_header_.size() + 10] = 0; |
| 808 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 809 | bool failed = false; |
| 810 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 811 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 812 | failed = true; |
| 813 | // It should fail after decoding the copy address segment size |
| 814 | EXPECT_EQ(delta_file_header_.size() + 10, i); |
| 815 | break; |
| 816 | } |
| 817 | } |
| 818 | EXPECT_TRUE(failed); |
| 819 | EXPECT_EQ("", output_); |
| 820 | } |
| 821 | |
| 822 | TEST_F(VCDiffStandardDecoderTestByteByByte, CopyAddressSizeTooLargeByOne) { |
| 823 | ++delta_file_[delta_file_header_.size() + 10]; |
| 824 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 825 | bool failed = false; |
| 826 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 827 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 828 | failed = true; |
| 829 | // It should fail after decoding the copy address segment size |
| 830 | EXPECT_EQ(delta_file_header_.size() + 10, i); |
| 831 | break; |
| 832 | } |
| 833 | } |
| 834 | EXPECT_TRUE(failed); |
| 835 | EXPECT_EQ("", output_); |
| 836 | } |
| 837 | |
| 838 | TEST_F(VCDiffStandardDecoderTestByteByByte, CopyAddressSizeTooSmallByOne) { |
| 839 | --delta_file_[delta_file_header_.size() + 10]; |
| 840 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 841 | bool failed = false; |
| 842 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 843 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 844 | failed = true; |
| 845 | // It should fail after decoding the copy address segment size |
| 846 | EXPECT_EQ(delta_file_header_.size() + 10, i); |
| 847 | break; |
| 848 | } |
| 849 | } |
| 850 | EXPECT_TRUE(failed); |
| 851 | EXPECT_EQ("", output_); |
| 852 | } |
| 853 | |
| 854 | TEST_F(VCDiffStandardDecoderTestByteByByte, CopyAddressSizeMaxInt) { |
| 855 | WriteMaxVarintAtOffset(10, 1); |
| 856 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 857 | bool failed = false; |
| 858 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 859 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 860 | failed = true; |
| 861 | // It should fail after decoding the copy address segment size |
| 862 | EXPECT_EQ(delta_file_header_.size() + 14, i); |
| 863 | break; |
| 864 | } |
| 865 | } |
| 866 | EXPECT_TRUE(failed); |
| 867 | EXPECT_EQ("", output_); |
| 868 | } |
| 869 | |
| 870 | TEST_F(VCDiffStandardDecoderTestByteByByte, CopyAddressSizeNegative) { |
| 871 | WriteNegativeVarintAtOffset(10, 1); |
| 872 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 873 | bool failed = false; |
| 874 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 875 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 876 | failed = true; |
| 877 | // It should fail after decoding the copy address segment size |
| 878 | EXPECT_EQ(delta_file_header_.size() + 14, i); |
| 879 | break; |
| 880 | } |
| 881 | } |
| 882 | EXPECT_TRUE(failed); |
| 883 | EXPECT_EQ("", output_); |
| 884 | } |
| 885 | |
| 886 | TEST_F(VCDiffStandardDecoderTestByteByByte, CopyAddressSizeInvalid) { |
| 887 | WriteInvalidVarintAtOffset(10, 1); |
| 888 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 889 | bool failed = false; |
| 890 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 891 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 892 | failed = true; |
| 893 | // It should fail after decoding the copy address segment size |
| 894 | EXPECT_GE(delta_file_header_.size() + 15, i); |
| 895 | break; |
| 896 | } |
| 897 | } |
| 898 | EXPECT_TRUE(failed); |
| 899 | EXPECT_EQ("", output_); |
| 900 | } |
| 901 | |
| 902 | TEST_F(VCDiffStandardDecoderTestByteByByte, InstructionsEndEarly) { |
| 903 | --delta_file_[delta_file_header_.size() + 9]; |
| 904 | ++delta_file_[delta_file_header_.size() + 10]; |
| 905 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 906 | bool failed = false; |
| 907 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 908 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 909 | failed = true; |
| 910 | break; |
| 911 | } |
| 912 | } |
| 913 | EXPECT_TRUE(failed); |
| 914 | // The decoder should not create more target bytes than were expected. |
| 915 | EXPECT_GE(expected_target_.size(), output_.size()); |
| 916 | } |
| 917 | |
| 918 | // From this point on, the tests should also be run against the interleaved |
| 919 | // format. |
| 920 | |
| 921 | TEST_F(VCDiffStandardDecoderTestByteByByte, CopyMoreThanExpectedTarget) { |
| 922 | delta_file_[delta_file_header_.size() + 0x70] = |
| 923 | FirstByteOfStringLength(kExpectedTarget); |
| 924 | delta_file_[delta_file_header_.size() + 0x71] = |
| 925 | SecondByteOfStringLength(kExpectedTarget) + 1; |
| 926 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 927 | bool failed = false; |
| 928 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 929 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 930 | failed = true; |
| 931 | break; |
| 932 | } |
| 933 | } |
| 934 | EXPECT_TRUE(failed); |
| 935 | // The decoder should not create more target bytes than were expected. |
| 936 | EXPECT_GE(expected_target_.size(), output_.size()); |
| 937 | } |
| 938 | |
| 939 | TEST_F(VCDiffStandardDecoderTestByteByByte, CopySizeZero) { |
| 940 | delta_file_[delta_file_header_.size() + 0x70] = 0; |
| 941 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 942 | bool failed = false; |
| 943 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 944 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 945 | failed = true; |
| 946 | break; |
| 947 | } |
| 948 | } |
| 949 | EXPECT_TRUE(failed); |
| 950 | // The decoder should not create more target bytes than were expected. |
| 951 | EXPECT_GE(expected_target_.size(), output_.size()); |
| 952 | } |
| 953 | |
| 954 | TEST_F(VCDiffStandardDecoderTestByteByByte, CopySizeTooLargeByOne) { |
| 955 | ++delta_file_[delta_file_header_.size() + 0x70]; |
| 956 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 957 | bool failed = false; |
| 958 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 959 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 960 | failed = true; |
| 961 | break; |
| 962 | } |
| 963 | } |
| 964 | EXPECT_TRUE(failed); |
| 965 | // The decoder should not create more target bytes than were expected. |
| 966 | EXPECT_GE(expected_target_.size(), output_.size()); |
| 967 | } |
| 968 | |
| 969 | TEST_F(VCDiffStandardDecoderTestByteByByte, CopySizeTooSmallByOne) { |
| 970 | --delta_file_[delta_file_header_.size() + 0x70]; |
| 971 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 972 | bool failed = false; |
| 973 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 974 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 975 | failed = true; |
| 976 | break; |
| 977 | } |
| 978 | } |
| 979 | EXPECT_TRUE(failed); |
| 980 | // The decoder should not create more target bytes than were expected. |
| 981 | EXPECT_GE(expected_target_.size(), output_.size()); |
| 982 | } |
| 983 | |
| 984 | TEST_F(VCDiffStandardDecoderTestByteByByte, CopySizeMaxInt) { |
| 985 | WriteMaxVarintAtOffset(0x70, 1); |
| 986 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 987 | bool failed = false; |
| 988 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 989 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 990 | failed = true; |
| 991 | break; |
| 992 | } |
| 993 | } |
| 994 | EXPECT_TRUE(failed); |
| 995 | // The decoder should not create more target bytes than were expected. |
| 996 | EXPECT_GE(expected_target_.size(), output_.size()); |
| 997 | } |
| 998 | |
| 999 | TEST_F(VCDiffStandardDecoderTestByteByByte, CopySizeNegative) { |
| 1000 | WriteNegativeVarintAtOffset(0x70, 1); |
| 1001 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 1002 | bool failed = false; |
| 1003 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 1004 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 1005 | failed = true; |
| 1006 | break; |
| 1007 | } |
| 1008 | } |
| 1009 | EXPECT_TRUE(failed); |
| 1010 | // The decoder should not create more target bytes than were expected. |
| 1011 | EXPECT_GE(expected_target_.size(), output_.size()); |
| 1012 | } |
| 1013 | |
| 1014 | TEST_F(VCDiffStandardDecoderTestByteByByte, CopySizeInvalid) { |
| 1015 | WriteInvalidVarintAtOffset(0x70, 1); |
| 1016 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 1017 | bool failed = false; |
| 1018 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 1019 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 1020 | failed = true; |
| 1021 | break; |
| 1022 | } |
| 1023 | } |
| 1024 | EXPECT_TRUE(failed); |
| 1025 | // The decoder should not create more target bytes than were expected. |
| 1026 | EXPECT_GE(expected_target_.size(), output_.size()); |
| 1027 | } |
| 1028 | |
| 1029 | TEST_F(VCDiffStandardDecoderTestByteByByte, CopyAddressBeyondHereAddress) { |
| 1030 | delta_file_[delta_file_header_.size() + 0x7B] = |
| 1031 | FirstByteOfStringLength(kDictionary); |
| 1032 | delta_file_[delta_file_header_.size() + 0x7C] = |
| 1033 | SecondByteOfStringLength(kDictionary); |
| 1034 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 1035 | bool failed = false; |
| 1036 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 1037 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 1038 | failed = true; |
| 1039 | break; |
| 1040 | } |
| 1041 | } |
| 1042 | EXPECT_TRUE(failed); |
| 1043 | // The decoder should not create more target bytes than were expected. |
| 1044 | EXPECT_GE(expected_target_.size(), output_.size()); |
| 1045 | } |
| 1046 | |
| 1047 | TEST_F(VCDiffStandardDecoderTestByteByByte, CopyAddressMaxInt) { |
| 1048 | WriteMaxVarintAtOffset(0x7B, 1); |
| 1049 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 1050 | bool failed = false; |
| 1051 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 1052 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 1053 | failed = true; |
| 1054 | break; |
| 1055 | } |
| 1056 | } |
| 1057 | EXPECT_TRUE(failed); |
| 1058 | // The decoder should not create more target bytes than were expected. |
| 1059 | EXPECT_GE(expected_target_.size(), output_.size()); |
| 1060 | } |
| 1061 | |
| 1062 | TEST_F(VCDiffStandardDecoderTestByteByByte, CopyAddressNegative) { |
| 1063 | WriteNegativeVarintAtOffset(0x70, 1); |
| 1064 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 1065 | bool failed = false; |
| 1066 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 1067 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 1068 | failed = true; |
| 1069 | break; |
| 1070 | } |
| 1071 | } |
| 1072 | EXPECT_TRUE(failed); |
| 1073 | // The decoder should not create more target bytes than were expected. |
| 1074 | EXPECT_GE(expected_target_.size(), output_.size()); |
| 1075 | } |
| 1076 | |
| 1077 | TEST_F(VCDiffStandardDecoderTestByteByByte, CopyAddressInvalid) { |
| 1078 | WriteInvalidVarintAtOffset(0x70, 1); |
| 1079 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 1080 | bool failed = false; |
| 1081 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 1082 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 1083 | failed = true; |
| 1084 | break; |
| 1085 | } |
| 1086 | } |
| 1087 | EXPECT_TRUE(failed); |
| 1088 | // The decoder should not create more target bytes than were expected. |
| 1089 | EXPECT_GE(expected_target_.size(), output_.size()); |
| 1090 | } |
| 1091 | |
| 1092 | TEST_F(VCDiffStandardDecoderTestByteByByte, AddMoreThanExpectedTarget) { |
| 1093 | delta_file_[delta_file_header_.size() + 0x72] = |
| 1094 | FirstByteOfStringLength(kExpectedTarget); |
| 1095 | delta_file_[delta_file_header_.size() + 0x73] = |
| 1096 | SecondByteOfStringLength(kExpectedTarget) + 1; |
| 1097 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 1098 | bool failed = false; |
| 1099 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 1100 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 1101 | failed = true; |
| 1102 | break; |
| 1103 | } |
| 1104 | } |
| 1105 | EXPECT_TRUE(failed); |
| 1106 | // The decoder should not create more target bytes than were expected. |
| 1107 | EXPECT_GE(expected_target_.size(), output_.size()); |
| 1108 | } |
| 1109 | |
| 1110 | TEST_F(VCDiffStandardDecoderTestByteByByte, AddSizeZero) { |
| 1111 | delta_file_[delta_file_header_.size() + 0x72] = 0; |
| 1112 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 1113 | bool failed = false; |
| 1114 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 1115 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 1116 | failed = true; |
| 1117 | break; |
| 1118 | } |
| 1119 | } |
| 1120 | EXPECT_TRUE(failed); |
| 1121 | // The decoder should not create more target bytes than were expected. |
| 1122 | EXPECT_GE(expected_target_.size(), output_.size()); |
| 1123 | } |
| 1124 | |
| 1125 | TEST_F(VCDiffStandardDecoderTestByteByByte, AddSizeTooLargeByOne) { |
| 1126 | ++delta_file_[delta_file_header_.size() + 0x72]; |
| 1127 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 1128 | bool failed = false; |
| 1129 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 1130 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 1131 | failed = true; |
| 1132 | break; |
| 1133 | } |
| 1134 | } |
| 1135 | EXPECT_TRUE(failed); |
| 1136 | // The decoder should not create more target bytes than were expected. |
| 1137 | EXPECT_GE(expected_target_.size(), output_.size()); |
| 1138 | } |
| 1139 | |
| 1140 | TEST_F(VCDiffStandardDecoderTestByteByByte, AddSizeTooSmallByOne) { |
| 1141 | --delta_file_[delta_file_header_.size() + 0x72]; |
| 1142 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 1143 | bool failed = false; |
| 1144 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 1145 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 1146 | failed = true; |
| 1147 | break; |
| 1148 | } |
| 1149 | } |
| 1150 | EXPECT_TRUE(failed); |
| 1151 | // The decoder should not create more target bytes than were expected. |
| 1152 | EXPECT_GE(expected_target_.size(), output_.size()); |
| 1153 | } |
| 1154 | |
| 1155 | TEST_F(VCDiffStandardDecoderTestByteByByte, AddSizeMaxInt) { |
| 1156 | WriteMaxVarintAtOffset(0x72, 1); |
| 1157 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 1158 | bool failed = false; |
| 1159 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 1160 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 1161 | failed = true; |
| 1162 | break; |
| 1163 | } |
| 1164 | } |
| 1165 | EXPECT_TRUE(failed); |
| 1166 | // The decoder should not create more target bytes than were expected. |
| 1167 | EXPECT_GE(expected_target_.size(), output_.size()); |
| 1168 | } |
| 1169 | |
| 1170 | TEST_F(VCDiffStandardDecoderTestByteByByte, AddSizeNegative) { |
| 1171 | WriteNegativeVarintAtOffset(0x72, 1); |
| 1172 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 1173 | bool failed = false; |
| 1174 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 1175 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 1176 | failed = true; |
| 1177 | break; |
| 1178 | } |
| 1179 | } |
| 1180 | EXPECT_TRUE(failed); |
| 1181 | // The decoder should not create more target bytes than were expected. |
| 1182 | EXPECT_GE(expected_target_.size(), output_.size()); |
| 1183 | } |
| 1184 | |
| 1185 | TEST_F(VCDiffStandardDecoderTestByteByByte, AddSizeInvalid) { |
| 1186 | WriteInvalidVarintAtOffset(0x72, 1); |
| 1187 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 1188 | bool failed = false; |
| 1189 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 1190 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 1191 | failed = true; |
| 1192 | break; |
| 1193 | } |
| 1194 | } |
| 1195 | EXPECT_TRUE(failed); |
| 1196 | // The decoder should not create more target bytes than were expected. |
| 1197 | EXPECT_GE(expected_target_.size(), output_.size()); |
| 1198 | } |
| 1199 | |
| 1200 | TEST_F(VCDiffStandardDecoderTestByteByByte, RunMoreThanExpectedTarget) { |
| 1201 | delta_file_[delta_file_header_.size() + 0x78] = |
| 1202 | FirstByteOfStringLength(kExpectedTarget); |
| 1203 | delta_file_[delta_file_header_.size() + 0x79] = |
| 1204 | SecondByteOfStringLength(kExpectedTarget) + 1; |
| 1205 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 1206 | bool failed = false; |
| 1207 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 1208 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 1209 | failed = true; |
| 1210 | break; |
| 1211 | } |
| 1212 | } |
| 1213 | EXPECT_TRUE(failed); |
| 1214 | // The decoder should not create more target bytes than were expected. |
| 1215 | EXPECT_GE(expected_target_.size(), output_.size()); |
| 1216 | } |
| 1217 | |
| 1218 | TEST_F(VCDiffStandardDecoderTestByteByByte, RunSizeZero) { |
| 1219 | delta_file_[delta_file_header_.size() + 0x78] = 0; |
| 1220 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 1221 | bool failed = false; |
| 1222 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 1223 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 1224 | failed = true; |
| 1225 | break; |
| 1226 | } |
| 1227 | } |
| 1228 | EXPECT_TRUE(failed); |
| 1229 | // The decoder should not create more target bytes than were expected. |
| 1230 | EXPECT_GE(expected_target_.size(), output_.size()); |
| 1231 | } |
| 1232 | |
| 1233 | TEST_F(VCDiffStandardDecoderTestByteByByte, RunSizeTooLargeByOne) { |
| 1234 | ++delta_file_[delta_file_header_.size() + 0x78]; |
| 1235 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 1236 | bool failed = false; |
| 1237 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 1238 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 1239 | failed = true; |
| 1240 | break; |
| 1241 | } |
| 1242 | } |
| 1243 | EXPECT_TRUE(failed); |
| 1244 | // The decoder should not create more target bytes than were expected. |
| 1245 | EXPECT_GE(expected_target_.size(), output_.size()); |
| 1246 | } |
| 1247 | |
| 1248 | TEST_F(VCDiffStandardDecoderTestByteByByte, RunSizeTooSmallByOne) { |
| 1249 | --delta_file_[delta_file_header_.size() + 0x78]; |
| 1250 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 1251 | bool failed = false; |
| 1252 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 1253 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 1254 | failed = true; |
| 1255 | break; |
| 1256 | } |
| 1257 | } |
| 1258 | EXPECT_TRUE(failed); |
| 1259 | // The decoder should not create more target bytes than were expected. |
| 1260 | EXPECT_GE(expected_target_.size(), output_.size()); |
| 1261 | } |
| 1262 | |
| 1263 | TEST_F(VCDiffStandardDecoderTestByteByByte, RunSizeMaxInt) { |
| 1264 | WriteMaxVarintAtOffset(0x78, 1); |
| 1265 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 1266 | bool failed = false; |
| 1267 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 1268 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 1269 | failed = true; |
| 1270 | break; |
| 1271 | } |
| 1272 | } |
| 1273 | EXPECT_TRUE(failed); |
| 1274 | // The decoder should not create more target bytes than were expected. |
| 1275 | EXPECT_GE(expected_target_.size(), output_.size()); |
| 1276 | } |
| 1277 | |
| 1278 | TEST_F(VCDiffStandardDecoderTestByteByByte, RunSizeNegative) { |
| 1279 | WriteNegativeVarintAtOffset(0x78, 1); |
| 1280 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 1281 | bool failed = false; |
| 1282 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 1283 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 1284 | failed = true; |
| 1285 | break; |
| 1286 | } |
| 1287 | } |
| 1288 | EXPECT_TRUE(failed); |
| 1289 | // The decoder should not create more target bytes than were expected. |
| 1290 | EXPECT_GE(expected_target_.size(), output_.size()); |
| 1291 | } |
| 1292 | |
| 1293 | TEST_F(VCDiffStandardDecoderTestByteByByte, RunSizeInvalid) { |
| 1294 | WriteInvalidVarintAtOffset(0x78, 1); |
| 1295 | decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| 1296 | bool failed = false; |
| 1297 | for (size_t i = 0; i < delta_file_.size(); ++i) { |
| 1298 | if (!decoder_.DecodeChunk(&delta_file_[i], 1, &output_)) { |
| 1299 | failed = true; |
| 1300 | break; |
| 1301 | } |
| 1302 | } |
| 1303 | EXPECT_TRUE(failed); |
| 1304 | // The decoder should not create more target bytes than were expected. |
| 1305 | EXPECT_GE(expected_target_.size(), output_.size()); |
| 1306 | } |
| 1307 | |
| 1308 | } // namespace open_vcdiff |