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Side by Side Diff: tests/FrontBufferedStreamTest.cpp

Issue 1316123003: Style Change: SkNEW->new; SkDELETE->delete (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: 2015-08-26 (Wednesday) 15:59:00 EDT Created 5 years, 3 months ago
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1 /* 1 /*
2 * Copyright 2013 Google Inc. 2 * Copyright 2013 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 "SkBitmap.h" 8 #include "SkBitmap.h"
9 #include "SkFrontBufferedStream.h" 9 #include "SkFrontBufferedStream.h"
10 #include "SkImageDecoder.h" 10 #include "SkImageDecoder.h"
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47 // The string is long to ensure that all of our lengths being tested are 47 // The string is long to ensure that all of our lengths being tested are
48 // smaller than the string length. 48 // smaller than the string length.
49 const char gAbcs[] = "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdef ghijklmnopqrstuvwx"; 49 const char gAbcs[] = "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdef ghijklmnopqrstuvwx";
50 50
51 // Tests reading the stream across boundaries of what has been buffered so far a nd what 51 // Tests reading the stream across boundaries of what has been buffered so far a nd what
52 // the total buffer size is. 52 // the total buffer size is.
53 static void test_incremental_buffering(skiatest::Reporter* reporter, size_t buff erSize) { 53 static void test_incremental_buffering(skiatest::Reporter* reporter, size_t buff erSize) {
54 // NOTE: For this and other tests in this file, we cheat and continue to ref er to the 54 // NOTE: For this and other tests in this file, we cheat and continue to ref er to the
55 // wrapped stream, but that's okay because we know the wrapping stream has n ot been 55 // wrapped stream, but that's okay because we know the wrapping stream has n ot been
56 // deleted yet (and we only call const methods in it). 56 // deleted yet (and we only call const methods in it).
57 SkMemoryStream* memStream = SkNEW_ARGS(SkMemoryStream, (gAbcs, strlen(gAbcs) , false)); 57 SkMemoryStream* memStream = new SkMemoryStream(gAbcs, strlen(gAbcs), false);
58 58
59 SkAutoTDelete<SkStream> bufferedStream(SkFrontBufferedStream::Create(memStre am, bufferSize)); 59 SkAutoTDelete<SkStream> bufferedStream(SkFrontBufferedStream::Create(memStre am, bufferSize));
60 test_hasLength(reporter, *bufferedStream.get(), *memStream); 60 test_hasLength(reporter, *bufferedStream.get(), *memStream);
61 61
62 // First, test reading less than the max buffer size. 62 // First, test reading less than the max buffer size.
63 test_read(reporter, bufferedStream, gAbcs, bufferSize / 2); 63 test_read(reporter, bufferedStream, gAbcs, bufferSize / 2);
64 64
65 // Now test rewinding back to the beginning and reading less than what was 65 // Now test rewinding back to the beginning and reading less than what was
66 // already buffered. 66 // already buffered.
67 test_rewind(reporter, bufferedStream, true); 67 test_rewind(reporter, bufferedStream, true);
68 test_read(reporter, bufferedStream, gAbcs, bufferSize / 4); 68 test_read(reporter, bufferedStream, gAbcs, bufferSize / 4);
69 69
70 // Now test reading part of what was buffered, and buffering new data. 70 // Now test reading part of what was buffered, and buffering new data.
71 test_read(reporter, bufferedStream, gAbcs + bufferedStream->getPosition(), b ufferSize / 2); 71 test_read(reporter, bufferedStream, gAbcs + bufferedStream->getPosition(), b ufferSize / 2);
72 72
73 // Now test reading what was buffered, buffering new data, and 73 // Now test reading what was buffered, buffering new data, and
74 // reading directly from the stream. 74 // reading directly from the stream.
75 test_rewind(reporter, bufferedStream, true); 75 test_rewind(reporter, bufferedStream, true);
76 test_read(reporter, bufferedStream, gAbcs, bufferSize << 1); 76 test_read(reporter, bufferedStream, gAbcs, bufferSize << 1);
77 77
78 // We have reached the end of the buffer, so rewinding will fail. 78 // We have reached the end of the buffer, so rewinding will fail.
79 // This test assumes that the stream is larger than the buffer; otherwise th e 79 // This test assumes that the stream is larger than the buffer; otherwise th e
80 // result of rewind should be true. 80 // result of rewind should be true.
81 test_rewind(reporter, bufferedStream, false); 81 test_rewind(reporter, bufferedStream, false);
82 } 82 }
83 83
84 static void test_perfectly_sized_buffer(skiatest::Reporter* reporter, size_t buf ferSize) { 84 static void test_perfectly_sized_buffer(skiatest::Reporter* reporter, size_t buf ferSize) {
85 SkMemoryStream* memStream = SkNEW_ARGS(SkMemoryStream, (gAbcs, strlen(gAbcs) , false)); 85 SkMemoryStream* memStream = new SkMemoryStream(gAbcs, strlen(gAbcs), false);
86 SkAutoTDelete<SkStream> bufferedStream(SkFrontBufferedStream::Create(memStre am, bufferSize)); 86 SkAutoTDelete<SkStream> bufferedStream(SkFrontBufferedStream::Create(memStre am, bufferSize));
87 test_hasLength(reporter, *bufferedStream.get(), *memStream); 87 test_hasLength(reporter, *bufferedStream.get(), *memStream);
88 88
89 // Read exactly the amount that fits in the buffer. 89 // Read exactly the amount that fits in the buffer.
90 test_read(reporter, bufferedStream, gAbcs, bufferSize); 90 test_read(reporter, bufferedStream, gAbcs, bufferSize);
91 91
92 // Rewinding should succeed. 92 // Rewinding should succeed.
93 test_rewind(reporter, bufferedStream, true); 93 test_rewind(reporter, bufferedStream, true);
94 94
95 // Once again reading buffered info should succeed 95 // Once again reading buffered info should succeed
96 test_read(reporter, bufferedStream, gAbcs, bufferSize); 96 test_read(reporter, bufferedStream, gAbcs, bufferSize);
97 97
98 // Read past the size of the buffer. At this point, we cannot return. 98 // Read past the size of the buffer. At this point, we cannot return.
99 test_read(reporter, bufferedStream, gAbcs + bufferedStream->getPosition(), 1 ); 99 test_read(reporter, bufferedStream, gAbcs + bufferedStream->getPosition(), 1 );
100 test_rewind(reporter, bufferedStream, false); 100 test_rewind(reporter, bufferedStream, false);
101 } 101 }
102 102
103 static void test_skipping(skiatest::Reporter* reporter, size_t bufferSize) { 103 static void test_skipping(skiatest::Reporter* reporter, size_t bufferSize) {
104 SkMemoryStream* memStream = SkNEW_ARGS(SkMemoryStream, (gAbcs, strlen(gAbcs) , false)); 104 SkMemoryStream* memStream = new SkMemoryStream(gAbcs, strlen(gAbcs), false);
105 SkAutoTDelete<SkStream> bufferedStream(SkFrontBufferedStream::Create(memStre am, bufferSize)); 105 SkAutoTDelete<SkStream> bufferedStream(SkFrontBufferedStream::Create(memStre am, bufferSize));
106 test_hasLength(reporter, *bufferedStream.get(), *memStream); 106 test_hasLength(reporter, *bufferedStream.get(), *memStream);
107 107
108 // Skip half the buffer. 108 // Skip half the buffer.
109 bufferedStream->skip(bufferSize / 2); 109 bufferedStream->skip(bufferSize / 2);
110 110
111 // Rewind, then read part of the buffer, which should have been read. 111 // Rewind, then read part of the buffer, which should have been read.
112 test_rewind(reporter, bufferedStream, true); 112 test_rewind(reporter, bufferedStream, true);
113 test_read(reporter, bufferedStream, gAbcs, bufferSize / 4); 113 test_read(reporter, bufferedStream, gAbcs, bufferSize / 4);
114 114
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145 145
146 private: 146 private:
147 bool fIsAtEnd; 147 bool fIsAtEnd;
148 typedef SkMemoryStream INHERITED; 148 typedef SkMemoryStream INHERITED;
149 }; 149 };
150 150
151 // This test ensures that buffering the exact length of the stream and attemptin g to read beyond it 151 // This test ensures that buffering the exact length of the stream and attemptin g to read beyond it
152 // does not invalidate the buffer. 152 // does not invalidate the buffer.
153 static void test_read_beyond_buffer(skiatest::Reporter* reporter, size_t bufferS ize) { 153 static void test_read_beyond_buffer(skiatest::Reporter* reporter, size_t bufferS ize) {
154 // Use a stream that behaves like Android's stream. 154 // Use a stream that behaves like Android's stream.
155 AndroidLikeMemoryStream* memStream = SkNEW_ARGS(AndroidLikeMemoryStream, ((v oid*)gAbcs, bufferSize, false)); 155 AndroidLikeMemoryStream* memStream =
156 new AndroidLikeMemoryStream((void*)gAbcs, bufferSize, false);
156 157
157 // Create a buffer that matches the length of the stream. 158 // Create a buffer that matches the length of the stream.
158 SkAutoTDelete<SkStream> bufferedStream(SkFrontBufferedStream::Create(memStre am, bufferSize)); 159 SkAutoTDelete<SkStream> bufferedStream(SkFrontBufferedStream::Create(memStre am, bufferSize));
159 test_hasLength(reporter, *bufferedStream.get(), *memStream); 160 test_hasLength(reporter, *bufferedStream.get(), *memStream);
160 161
161 // Attempt to read one more than the bufferSize 162 // Attempt to read one more than the bufferSize
162 test_read(reporter, bufferedStream.get(), gAbcs, bufferSize + 1); 163 test_read(reporter, bufferedStream.get(), gAbcs, bufferSize + 1);
163 test_rewind(reporter, bufferedStream.get(), true); 164 test_rewind(reporter, bufferedStream.get(), true);
164 165
165 // Ensure that the initial read did not invalidate the buffer. 166 // Ensure that the initial read did not invalidate the buffer.
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193 194
194 private: 195 private:
195 const bool fHasLength; 196 const bool fHasLength;
196 const bool fHasPosition; 197 const bool fHasPosition;
197 }; 198 };
198 199
199 // Test all possible combinations of the wrapped stream having a length and a po sition. 200 // Test all possible combinations of the wrapped stream having a length and a po sition.
200 static void test_length_combos(skiatest::Reporter* reporter, size_t bufferSize) { 201 static void test_length_combos(skiatest::Reporter* reporter, size_t bufferSize) {
201 for (int hasLen = 0; hasLen <= 1; hasLen++) { 202 for (int hasLen = 0; hasLen <= 1; hasLen++) {
202 for (int hasPos = 0; hasPos <= 1; hasPos++) { 203 for (int hasPos = 0; hasPos <= 1; hasPos++) {
203 LengthOptionalStream* stream = SkNEW_ARGS(LengthOptionalStream, (SkT oBool(hasLen), SkToBool(hasPos))); 204 LengthOptionalStream* stream =
205 new LengthOptionalStream(SkToBool(hasLen), SkToBool(hasPos)) ;
204 SkAutoTDelete<SkStream> buffered(SkFrontBufferedStream::Create(strea m, bufferSize)); 206 SkAutoTDelete<SkStream> buffered(SkFrontBufferedStream::Create(strea m, bufferSize));
205 test_hasLength(reporter, *buffered.get(), *stream); 207 test_hasLength(reporter, *buffered.get(), *stream);
206 } 208 }
207 } 209 }
208 } 210 }
209 211
210 // Test using a stream with an initial offset. 212 // Test using a stream with an initial offset.
211 static void test_initial_offset(skiatest::Reporter* reporter, size_t bufferSize) { 213 static void test_initial_offset(skiatest::Reporter* reporter, size_t bufferSize) {
212 SkMemoryStream* memStream = SkNEW_ARGS(SkMemoryStream, (gAbcs, strlen(gAbcs) , false)); 214 SkMemoryStream* memStream = new SkMemoryStream(gAbcs, strlen(gAbcs), false);
213 215
214 // Skip a few characters into the memStream, so that bufferedStream represen ts an offset into 216 // Skip a few characters into the memStream, so that bufferedStream represen ts an offset into
215 // the stream it wraps. 217 // the stream it wraps.
216 const size_t arbitraryOffset = 17; 218 const size_t arbitraryOffset = 17;
217 memStream->skip(arbitraryOffset); 219 memStream->skip(arbitraryOffset);
218 SkAutoTDelete<SkStream> bufferedStream(SkFrontBufferedStream::Create(memStre am, bufferSize)); 220 SkAutoTDelete<SkStream> bufferedStream(SkFrontBufferedStream::Create(memStre am, bufferSize));
219 221
220 // Since SkMemoryStream has a length and a position, bufferedStream must als o. 222 // Since SkMemoryStream has a length and a position, bufferedStream must als o.
221 REPORTER_ASSERT(reporter, bufferedStream->hasLength()); 223 REPORTER_ASSERT(reporter, bufferedStream->hasLength());
222 224
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279 281
280 bool readAfterEnd() const { 282 bool readAfterEnd() const {
281 return fReadAfterEnd; 283 return fReadAfterEnd;
282 } 284 }
283 private: 285 private:
284 bool fAtEnd; 286 bool fAtEnd;
285 bool fReadAfterEnd; 287 bool fReadAfterEnd;
286 }; 288 };
287 289
288 DEF_TEST(ShortFrontBufferedStream, reporter) { 290 DEF_TEST(ShortFrontBufferedStream, reporter) {
289 FailingStream* failingStream = SkNEW(FailingStream); 291 FailingStream* failingStream = new FailingStream;
290 SkAutoTDelete<SkStreamRewindable> stream(SkFrontBufferedStream::Create(faili ngStream, 64)); 292 SkAutoTDelete<SkStreamRewindable> stream(SkFrontBufferedStream::Create(faili ngStream, 64));
291 SkBitmap bm; 293 SkBitmap bm;
292 // The return value of DecodeStream is not important. We are just using Deco deStream because 294 // The return value of DecodeStream is not important. We are just using Deco deStream because
293 // it simulates a bug. DecodeStream will read the stream, then rewind, then attempt to read 295 // it simulates a bug. DecodeStream will read the stream, then rewind, then attempt to read
294 // again. FrontBufferedStream::read should not continue to read its underlyi ng stream beyond 296 // again. FrontBufferedStream::read should not continue to read its underlyi ng stream beyond
295 // its end. 297 // its end.
296 SkImageDecoder::DecodeStream(stream, &bm); 298 SkImageDecoder::DecodeStream(stream, &bm);
297 REPORTER_ASSERT(reporter, !failingStream->readAfterEnd()); 299 REPORTER_ASSERT(reporter, !failingStream->readAfterEnd());
298 } 300 }
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