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1 /* | 1 /* |
2 * Copyright 2011 Google Inc. | 2 * Copyright 2011 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #include "SkRandom.h" | 8 #include "SkRandom.h" |
9 #include "SkReader32.h" | 9 #include "SkReader32.h" |
10 #include "SkWriter32.h" | 10 #include "SkWriter32.h" |
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274 testOverwriteT(reporter, &writer); | 274 testOverwriteT(reporter, &writer); |
275 } | 275 } |
276 | 276 |
277 DEF_TEST(Writer32_misc, reporter) { | 277 DEF_TEST(Writer32_misc, reporter) { |
278 test_reserve(reporter); | 278 test_reserve(reporter); |
279 test_string_null(reporter); | 279 test_string_null(reporter); |
280 test_ptr(reporter); | 280 test_ptr(reporter); |
281 test_rewind(reporter); | 281 test_rewind(reporter); |
282 } | 282 } |
283 | 283 |
284 DEF_TEST(Writer32_snapshot, reporter) { | |
285 int32_t array[] = { 1, 2, 4, 11 }; | |
286 SkSWriter32<sizeof(array) + 4> writer; | |
287 writer.write(array, sizeof(array)); | |
288 check_contents(reporter, writer, array, sizeof(array)); | |
289 const void* beforeData = writer.contiguousArray(); | |
290 SkAutoDataUnref snapshot(writer.snapshotAsData()); | |
291 // check the snapshot forced a copy of the static data | |
292 REPORTER_ASSERT(reporter, snapshot->data() != beforeData); | |
293 REPORTER_ASSERT(reporter, snapshot->size() == writer.bytesWritten()); | |
294 } | |
295 | |
296 DEF_TEST(Writer32_snapshot_dynamic, reporter) { | |
297 int32_t array[] = { 1, 2, 4, 11 }; | |
298 SkWriter32 writer; | |
299 writer.write(array, sizeof(array)); | |
300 check_contents(reporter, writer, array, sizeof(array)); | |
301 // force a capacity increase so we can test COW behaviour | |
302 writer.write(array, sizeof(array)); | |
303 writer.rewindToOffset(sizeof(array)); | |
304 const void* beforeData = writer.contiguousArray(); | |
305 SkAutoDataUnref snapshot(writer.snapshotAsData()); | |
306 // check the snapshot still points to the same data as the writer | |
307 REPORTER_ASSERT(reporter, writer.contiguousArray() == beforeData); | |
308 REPORTER_ASSERT(reporter, snapshot->data() == beforeData); | |
309 REPORTER_ASSERT(reporter, snapshot->size() == writer.bytesWritten()); | |
310 // write more data that would fit in the buffer | |
311 writer.write(array, sizeof(array)); | |
312 // test it triggered COW anyway | |
313 REPORTER_ASSERT(reporter, writer.contiguousArray() != beforeData); | |
314 } | |
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