155 lines
4.0 KiB
Java
155 lines
4.0 KiB
Java
/*
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* Copyright (C) 2010 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not
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* use this file except in compliance with the License. You may obtain a copy of
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* the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations under
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* the License.
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*/
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package com.android.inputmethod.latin;
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import com.android.inputmethod.latin.SwipeTracker.EventRingBuffer;
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import android.test.AndroidTestCase;
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public class EventRingBufferTests extends AndroidTestCase {
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@Override
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protected void setUp() throws Exception {
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super.setUp();
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}
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@Override
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protected void tearDown() throws Exception {
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super.tearDown();
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}
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private static float X_BASE = 1000f;
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private static float Y_BASE = 2000f;
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private static long TIME_BASE = 3000l;
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private static float x(int id) {
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return X_BASE + id;
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}
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private static float y(int id) {
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return Y_BASE + id;
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}
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private static long time(int id) {
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return TIME_BASE + id;
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}
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private static void addEvent(EventRingBuffer buf, int id) {
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buf.add(x(id), y(id), time(id));
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}
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private static void assertEventSize(EventRingBuffer buf, int size) {
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assertEquals(size, buf.size());
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}
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private static void assertEvent(EventRingBuffer buf, int pos, int id) {
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assertEquals(x(id), buf.getX(pos), 0f);
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assertEquals(y(id), buf.getY(pos), 0f);
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assertEquals(time(id), buf.getTime(pos));
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}
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public void testClearBuffer() {
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EventRingBuffer buf = new EventRingBuffer(4);
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assertEventSize(buf, 0);
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addEvent(buf, 0);
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addEvent(buf, 1);
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addEvent(buf, 2);
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addEvent(buf, 3);
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addEvent(buf, 4);
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assertEventSize(buf, 4);
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buf.clear();
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assertEventSize(buf, 0);
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}
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public void testRingBuffer() {
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EventRingBuffer buf = new EventRingBuffer(4);
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assertEventSize(buf, 0); // [0]
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addEvent(buf, 0);
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assertEventSize(buf, 1); // [1] 0
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assertEvent(buf, 0, 0);
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addEvent(buf, 1);
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addEvent(buf, 2);
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assertEventSize(buf, 3); // [3] 2 1 0
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assertEvent(buf, 0, 0);
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assertEvent(buf, 1, 1);
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assertEvent(buf, 2, 2);
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addEvent(buf, 3);
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assertEventSize(buf, 4); // [4] 3 2 1 0
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assertEvent(buf, 0, 0);
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assertEvent(buf, 1, 1);
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assertEvent(buf, 2, 2);
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assertEvent(buf, 3, 3);
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addEvent(buf, 4);
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addEvent(buf, 5);
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assertEventSize(buf, 4); // [4] 5 4|3 2(1 0)
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assertEvent(buf, 0, 2);
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assertEvent(buf, 1, 3);
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assertEvent(buf, 2, 4);
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assertEvent(buf, 3, 5);
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addEvent(buf, 6);
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addEvent(buf, 7);
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addEvent(buf, 8);
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assertEventSize(buf, 4); // [4] 8 7 6 5|(4 3 2)1|0
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assertEvent(buf, 0, 5);
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assertEvent(buf, 1, 6);
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assertEvent(buf, 2, 7);
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assertEvent(buf, 3, 8);
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}
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public void testDropOldest() {
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EventRingBuffer buf = new EventRingBuffer(4);
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addEvent(buf, 0);
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assertEventSize(buf, 1); // [1] 0
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assertEvent(buf, 0, 0);
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buf.dropOldest();
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assertEventSize(buf, 0); // [0] (0)
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addEvent(buf, 1);
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addEvent(buf, 2);
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addEvent(buf, 3);
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addEvent(buf, 4);
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assertEventSize(buf, 4); // [4] 4|3 2 1(0)
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assertEvent(buf, 0, 1);
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buf.dropOldest();
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assertEventSize(buf, 3); // [3] 4|3 2(1)0
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assertEvent(buf, 0, 2);
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buf.dropOldest();
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assertEventSize(buf, 2); // [2] 4|3(2)10
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assertEvent(buf, 0, 3);
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buf.dropOldest();
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assertEventSize(buf, 1); // [1] 4|(3)210
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assertEvent(buf, 0, 4);
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buf.dropOldest();
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assertEventSize(buf, 0); // [0] (4)|3210
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}
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}
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