| /* |
| * Copyright (C) 2012 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.inputmethod.latin; |
| |
| import android.test.AndroidTestCase; |
| import android.test.suitebuilder.annotation.SmallTest; |
| |
| @SmallTest |
| public class ForgettingCurveTests extends AndroidTestCase { |
| public void testFcToFreq() { |
| for (int i = 0; i < Byte.MAX_VALUE; ++i) { |
| final byte fc = (byte)i; |
| final int e = UserHistoryForgettingCurveUtils.fcToElapsedTime(fc); |
| final int c = UserHistoryForgettingCurveUtils.fcToCount(fc); |
| final int l = UserHistoryForgettingCurveUtils.fcToLevel(fc); |
| final byte fc2 = UserHistoryForgettingCurveUtils.calcFc(e, c, l); |
| assertEquals(fc, fc2); |
| } |
| byte fc = 0; |
| int l; |
| for (int i = 0; i < 4; ++i) { |
| for (int j = 0; j < (UserHistoryForgettingCurveUtils.COUNT_MAX + 1); ++j) { |
| fc = UserHistoryForgettingCurveUtils.pushCount(fc, true); |
| } |
| l = UserHistoryForgettingCurveUtils.fcToLevel(fc); |
| assertEquals(l, Math.max(1, Math.min(i + 1, 3))); |
| } |
| fc = 0; |
| for (int i = 0; i < 4; ++i) { |
| for (int j = 0; j < (UserHistoryForgettingCurveUtils.COUNT_MAX + 1); ++j) { |
| fc = UserHistoryForgettingCurveUtils.pushCount(fc, false); |
| } |
| l = UserHistoryForgettingCurveUtils.fcToLevel(fc); |
| assertEquals(l, Math.min(i + 1, 3)); |
| } |
| for (int i = 0; i < 4; ++i) { |
| for (int j = 0; j < (UserHistoryForgettingCurveUtils.ELAPSED_TIME_MAX + 1); ++j) { |
| fc = UserHistoryForgettingCurveUtils.pushElapsedTime(fc); |
| } |
| l = UserHistoryForgettingCurveUtils.fcToLevel(fc); |
| assertEquals(l, Math.max(0, 2 - i)); |
| } |
| } |
| } |