modules/midp-lcdui/src/test/java/mleui/forms/TestItemRemoveShift.java

   1 // -*- Mode: Java; indent-tabs-mode: t; tab-width: 4 -*-
   2 // ---------------------------------------------------------------------------
   3 // SquirrelJME
   4 //     Copyright (C) Stephanie Gawroriski <xer@multiphasicapps.net>
   5 // ---------------------------------------------------------------------------
   6 // SquirrelJME is under the GNU General Public License v3+, or later.
   7 // See license.mkd for licensing and copyright information.
   8 // ---------------------------------------------------------------------------
   9
  10 package mleui.forms;
  11
  12 import cc.squirreljme.jvm.mle.brackets.UIDisplayBracket;
  13 import cc.squirreljme.jvm.mle.brackets.UIFormBracket;
  14 import cc.squirreljme.jvm.mle.brackets.UIItemBracket;
  15 import cc.squirreljme.jvm.mle.constants.UIItemType;
  16 import cc.squirreljme.runtime.lcdui.mle.UIBackend;
  17 import java.util.ArrayList;
  18 import java.util.List;
  19 import java.util.Random;
  20
  21 /**
  22  * Tests that removing items shifts them accordingly.
  23  *
  24  * @since 2020/07/19
  25  */
  26 public class TestItemRemoveShift
  27         extends BaseUIForm
  28 {
  29         /**
  30          * {@inheritDoc}
  31          * @since 2020/07/19
  32          */
  33         @Override
  34         protected void test(UIBackend __backend, UIDisplayBracket __display,
  35                 UIFormBracket __form)
  36         {
  37                 // Setup all the items and add to the form beforehand
  38                 List<__Holder__> items = new ArrayList<>();
  39                 for (int i = 0; i < UIItemType.NUM_TYPES; i++)
  40                 {
  41                         UIItemBracket item = __backend.itemNew(i);
  42
  43                         items.add(new __Holder__(item));
  44                         __backend.formItemPosition(__form, item, i);
  45                 }
  46
  47                 // We will be removing random elements!
  48                 Random random = new Random(12);
  49                 int removalCount = 0;
  50                 while (!items.isEmpty())
  51                 {
  52                         int count = items.size();
  53
  54                         // Determine index to be removed
  55                         int dx = (count == 1 ? 0 : random.nextInt(count));
  56
  57                         // Remove that item
  58                         UIItemBracket old = __backend.formItemRemove(__form, dx);
  59
  60                         // Should both be the same items from the list
  61                         this.secondary("same-" + removalCount,
  62                                 __backend.equals(old, items.remove(dx).item));
  63
  64                         // Count should be reduced by one
  65                         int subCount = count - 1;
  66                         this.secondary("subcount-" + removalCount,
  67                                 subCount == __backend.formItemCount(__form));
  68
  69                         // All of these should be the same item in the list
  70                         boolean[] matches = new boolean[subCount];
  71                         for (int j = 0; j < subCount; j++)
  72                                 matches[j] = __backend.equals(items.get(j).item,
  73                                         __backend.formItemAtPosition(__form, j));
  74                         this.secondary("sameitems-" + removalCount, matches);
  75
  76                         // For the next run (in testing)
  77                         removalCount++;
  78                 }
  79
  80                 // Form should be empty
  81                 this.secondary("empty", __backend.formItemCount(__form));
  82         }
  83 }