src/third_party/skia/tests/Reader32Test.cpp

   1 /*
   2  * Copyright 2011 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
   8 #include "SkReader32.h"
   9 #include "Test.h"
  10
  11 static void assert_eof(skiatest::Reporter* reporter, const SkReader32& reader) {
  12     REPORTER_ASSERT(reporter, reader.eof());
  13     REPORTER_ASSERT(reporter, reader.size() == reader.offset());
  14     REPORTER_ASSERT(reporter, (const char*)reader.peek() ==
  15                     (const char*)reader.base() + reader.size());
  16 }
  17
  18 static void assert_start(skiatest::Reporter* reporter, const SkReader32& reader) {
  19     REPORTER_ASSERT(reporter, 0 == reader.offset());
  20     REPORTER_ASSERT(reporter, reader.size() == reader.available());
  21     REPORTER_ASSERT(reporter, reader.isAvailable(reader.size()));
  22     REPORTER_ASSERT(reporter, !reader.isAvailable(reader.size() + 1));
  23     REPORTER_ASSERT(reporter, reader.peek() == reader.base());
  24 }
  25
  26 static void assert_empty(skiatest::Reporter* reporter, const SkReader32& reader) {
  27     REPORTER_ASSERT(reporter, 0 == reader.size());
  28     REPORTER_ASSERT(reporter, 0 == reader.offset());
  29     REPORTER_ASSERT(reporter, 0 == reader.available());
  30     REPORTER_ASSERT(reporter, !reader.isAvailable(1));
  31     assert_eof(reporter, reader);
  32     assert_start(reporter, reader);
  33 }
  34
  35 DEF_TEST(Reader32, reporter) {
  36     SkReader32 reader;
  37     assert_empty(reporter, reader);
  38     REPORTER_ASSERT(reporter, NULL == reader.base());
  39     REPORTER_ASSERT(reporter, NULL == reader.peek());
  40
  41     size_t i;
  42
  43     const int32_t data[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
  44     const SkScalar data2[] = { 0, SK_Scalar1, -SK_Scalar1, SK_Scalar1/2 };
  45     const size_t bufsize = sizeof(data) > sizeof(data2) ?
  46       sizeof(data) : sizeof(data2);
  47     char buffer[bufsize];
  48
  49     reader.setMemory(data, sizeof(data));
  50     for (i = 0; i < SK_ARRAY_COUNT(data); ++i) {
  51         REPORTER_ASSERT(reporter, sizeof(data) == reader.size());
  52         REPORTER_ASSERT(reporter, i*4 == reader.offset());
  53         REPORTER_ASSERT(reporter, (const void*)data == reader.base());
  54         REPORTER_ASSERT(reporter, (const void*)&data[i] == reader.peek());
  55         REPORTER_ASSERT(reporter, data[i] == reader.readInt());
  56     }
  57     assert_eof(reporter, reader);
  58     reader.rewind();
  59     assert_start(reporter, reader);
  60     reader.read(buffer, sizeof(data));
  61     REPORTER_ASSERT(reporter, !memcmp(data, buffer, sizeof(data)));
  62
  63     reader.setMemory(data2, sizeof(data2));
  64     for (i = 0; i < SK_ARRAY_COUNT(data2); ++i) {
  65         REPORTER_ASSERT(reporter, sizeof(data2) == reader.size());
  66         REPORTER_ASSERT(reporter, i*4 == reader.offset());
  67         REPORTER_ASSERT(reporter, (const void*)data2 == reader.base());
  68         REPORTER_ASSERT(reporter, (const void*)&data2[i] == reader.peek());
  69         REPORTER_ASSERT(reporter, data2[i] == reader.readScalar());
  70     }
  71     assert_eof(reporter, reader);
  72     reader.rewind();
  73     assert_start(reporter, reader);
  74     reader.read(buffer, sizeof(data2));
  75     REPORTER_ASSERT(reporter, !memcmp(data2, buffer, sizeof(data2)));
  76
  77     reader.setMemory(NULL, 0);
  78     assert_empty(reporter, reader);
  79     REPORTER_ASSERT(reporter, NULL == reader.base());
  80     REPORTER_ASSERT(reporter, NULL == reader.peek());
  81 }