| 31 | } |
| 32 | |
| 33 | void testStreamingBufferBlockSize( int blockSize ) |
| 34 | { |
| 35 | StreamingBuffer sb( blockSize ); |
| 36 | sb.pushFront( "abc", 4 ); |
| 37 | REQUIRE( sb.getSize() == 4 ); |
| 38 | REQUIRE( ! sb.empty() ); |
| 39 | std::vector<char> chv( ' ', 4 ); |
| 40 | REQUIRE( sb.popBack( &chv[0], 4 ) == 4 ); |
| 41 | REQUIRE( std::string( &chv[0] ) == "abc" ); |
| 42 | REQUIRE( sb.empty() ); |
| 43 | REQUIRE( sb.getSize() == 0 ); |
| 44 | |
| 45 | // push 2; sz = 2 |
| 46 | sb.pushFront( "a", 2 ); |
| 47 | REQUIRE( sb.getSize() == 2 ); |
| 48 | // push 2; sz = 4 |
| 49 | sb.pushFront( "a", 2 ); |
| 50 | REQUIRE( sb.getSize() == 4 ); |
| 51 | // pop 2; sz = 2 |
| 52 | REQUIRE( sb.popBack( &chv[0], 2 ) == 2 ); |
| 53 | REQUIRE( sb.getSize() == 2 ); |
| 54 | // pop 2 (attempting 10 ); sz = 0 |
| 55 | REQUIRE( sb.popBack( &chv[0], 10 ) == 2 ); |
| 56 | REQUIRE( sb.getSize() == 0 ); |
| 57 | |
| 58 | // popping on empty |
| 59 | REQUIRE( sb.popBack( &chv[0], 100 ) == 0 ); |
| 60 | // 0 length pop on empty |
| 61 | REQUIRE( sb.popBack( &chv[0], 0 ) == 0 ); |
| 62 | // 0 length pop on non-empty |
| 63 | sb.pushFront( "abc", 4 ); |
| 64 | REQUIRE( sb.popBack( &chv[0], 0 ) == 0 ); |
| 65 | sb.clear(); |
| 66 | REQUIRE( sb.empty() ); |
| 67 | // attempt to clear empty |
| 68 | sb.clear(); |
| 69 | |
| 70 | // rolling read/write activity that forces block reallocation |
| 71 | for( int i = 0; i < 100; ++i ) { |
| 72 | sb.pushFront( "abc", 4 ); |
| 73 | REQUIRE( sb.getSize() == 4 ); |
| 74 | REQUIRE( ! sb.empty() ); |
| 75 | std::vector<char> chv( ' ', 4 ); |
| 76 | REQUIRE( sb.popBack( &chv[0], 4 ) == 4 ); |
| 77 | REQUIRE( std::string( &chv[0] ) == "abc" ); |
| 78 | REQUIRE( sb.empty() ); |
| 79 | } |
| 80 | |
| 81 | // build up with pushes, then empty out with pops; verify FIFO values |
| 82 | for( int i = 0; i < 100; ++i ) { |
| 83 | uint16_t v = i; |
| 84 | sb.pushFront( &v, sizeof(uint16_t) ); |
| 85 | REQUIRE( sb.getSize() == (i + 1) * sizeof(uint16_t) ); |
| 86 | } |
| 87 | for( int i = 0; i < 100; ++i ) { |
| 88 | uint16_t v = i; |
| 89 | REQUIRE( sb.popBack( &v, sizeof( uint16_t ) ) == sizeof( uint16_t ) ); |
| 90 | REQUIRE( v == i ); |