nanocoat/tests/testStreamOverRead.c

   1 /* -*- Mode: C; indent-tabs-mode: t; tab-width: 4 -*-
   2 // ---------------------------------------------------------------------------
   3 // SquirrelJME
   4 //     Copyright (C) Stephanie Gawroriski <xer@multiphasicapps.net>
   5 // ---------------------------------------------------------------------------
   6 // SquirrelJME is under the Mozilla Public License Version 2.0.
   7 // See license.mkd for licensing and copyright information.
   8 // -------------------------------------------------------------------------*/
   9
  10 #include <string.h>
  11
  12 #include "mock.h"
  13 #include "proto.h"
  14 #include "test.h"
  15 #include "unit.h"
  16
  17 #define NUM_BYTES 16
  18
  19 #define READ_BYTES 50
  20
  21 static const sjme_jubyte testBytes[NUM_BYTES] =
  22 {
  23         2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
  24         12, 13, 14, 15, 16, 17,
  25 };
  26
  27 /**
  28  * Tests reading more bytes than what is available.
  29  *
  30  * @since 2023/12/31
  31  */
  32 SJME_TEST_DECLARE(testStreamOverRead)
  33 {
  34         sjme_stream_input inputStream;
  35         sjme_jint readCount;
  36         sjme_jint available;
  37         sjme_jubyte buf[READ_BYTES];
  38
  39         /* Open stream. */
  40         if (sjme_error_is(sjme_stream_inputOpenMemory(test->pool,
  41                         &inputStream, testBytes, NUM_BYTES)))
  42                 return sjme_unit_fail(test, "Could not open input stream.");
  43
  44         /* Get available bytes. */
  45         available = -2;
  46         if (sjme_error_is(sjme_stream_inputAvailable(inputStream,
  47                 &available)) || available < 0)
  48                 return sjme_unit_fail(test, "Could not get available bytes?");
  49
  50         /* The number of available bytes should be the full size. */
  51         sjme_unit_equalI(test, available, NUM_BYTES,
  52                 "Available bytes incorrect?");
  53
  54         /* Read way too many bytes. */
  55         memset(buf, 0, sizeof(buf));
  56         readCount = -2;
  57         if (sjme_error_is(sjme_stream_inputRead(inputStream,
  58                 &readCount, buf, READ_BYTES)))
  59                 return sjme_unit_fail(test, "Failed to read bytes?");
  60
  61         /* Should be the bytes in the buffer, not the read attempt. */
  62         sjme_unit_equalI(test, readCount, NUM_BYTES,
  63                 "Read count incorrect?");
  64
  65         /* Test that the actual bytes are correct. */
  66         sjme_unit_equalI(test, 0, memcmp(buf, testBytes, readCount),
  67                 "Read bytes are not correct?");
  68
  69         /* Close the stream. */
  70         if (sjme_error_is(sjme_stream_inputClose(inputStream)))
  71                 return sjme_unit_fail(test, "Could not close stream?");
  72
  73         /* Success! */
  74         return SJME_TEST_RESULT_PASS;
  75 }