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/*
* Copyright (C) 2010 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.view.inputmethod.ExtractedText;
import android.view.inputmethod.ExtractedTextRequest;
import android.view.inputmethod.InputConnection;
import android.view.inputmethod.InputConnectionWrapper;
import com.android.inputmethod.latin.EditingUtils.Range;
public class EditingUtilsTests extends AndroidTestCase {
// The following is meant to be a reasonable default for
// the "word_separators" resource.
private static final String sSeparators = ".,:;!?-";
@Override
protected void setUp() throws Exception {
super.setUp();
}
private class MockConnection extends InputConnectionWrapper {
final String mTextBefore;
final String mTextAfter;
final ExtractedText mExtractedText;
public MockConnection(String textBefore, String textAfter, ExtractedText extractedText) {
super(null, false);
mTextBefore = textBefore;
mTextAfter = textAfter;
mExtractedText = extractedText;
}
/* (non-Javadoc)
* @see android.view.inputmethod.InputConnectionWrapper#getTextBeforeCursor(int, int)
*/
@Override
public CharSequence getTextBeforeCursor(int n, int flags) {
return mTextBefore;
}
/* (non-Javadoc)
* @see android.view.inputmethod.InputConnectionWrapper#getTextAfterCursor(int, int)
*/
@Override
public CharSequence getTextAfterCursor(int n, int flags) {
return mTextAfter;
}
/* (non-Javadoc)
* @see android.view.inputmethod.InputConnectionWrapper#getExtractedText(ExtractedTextRequest, int)
*/
@Override
public ExtractedText getExtractedText(ExtractedTextRequest request, int flags) {
return mExtractedText;
}
}
/************************** Tests ************************/
/**
* Test for getting previous word (for bigram suggestions)
*/
public void testGetPreviousWord() {
// If one of the following cases breaks, the bigram suggestions won't work.
assertEquals(EditingUtils.getPreviousWord("abc def", sSeparators), "abc");
assertNull(EditingUtils.getPreviousWord("abc", sSeparators));
assertNull(EditingUtils.getPreviousWord("abc. def", sSeparators));
// The following tests reflect the current behavior of the function
// EditingUtils#getPreviousWord.
// TODO: However at this time, the code does never go
// into such a path, so it should be safe to change the behavior of
// this function if needed - especially since it does not seem very
// logical. These tests are just there to catch any unintentional
// changes in the behavior of the EditingUtils#getPreviousWord method.
assertEquals(EditingUtils.getPreviousWord("abc def ", sSeparators), "abc");
assertEquals(EditingUtils.getPreviousWord("abc def.", sSeparators), "abc");
assertEquals(EditingUtils.getPreviousWord("abc def .", sSeparators), "def");
assertNull(EditingUtils.getPreviousWord("abc ", sSeparators));
}
/**
* Test for getting the word before the cursor (for bigram)
*/
public void testGetThisWord() {
assertEquals(EditingUtils.getThisWord("abc def", sSeparators), "def");
assertEquals(EditingUtils.getThisWord("abc def ", sSeparators), "def");
assertNull(EditingUtils.getThisWord("abc def.", sSeparators));
assertNull(EditingUtils.getThisWord("abc def .", sSeparators));
}
/**
* Test logic in getting the word range at the cursor.
*/
public void testGetWordRangeAtCursor() {
ExtractedText et = new ExtractedText();
InputConnection mockConnection;
mockConnection = new MockConnection("word wo", "rd", et);
et.startOffset = 0;
et.selectionStart = 7;
Range r;
// basic case
r = EditingUtils.getWordRangeAtCursor(mockConnection, " ", 0);
assertEquals("word", r.mWord);
r = null;
// more than one word
r = EditingUtils.getWordRangeAtCursor(mockConnection, " ", 1);
assertEquals("word word", r.mWord);
r = null;
// tab character instead of space
mockConnection = new MockConnection("one\tword\two", "rd", et);
r = EditingUtils.getWordRangeAtCursor(mockConnection, "\t", 1);
assertEquals("word\tword", r.mWord);
r = null;
// only one word doesn't go too far
mockConnection = new MockConnection("one\tword\two", "rd", et);
r = EditingUtils.getWordRangeAtCursor(mockConnection, "\t", 1);
assertEquals("word\tword", r.mWord);
r = null;
// tab or space
mockConnection = new MockConnection("one word\two", "rd", et);
r = EditingUtils.getWordRangeAtCursor(mockConnection, " \t", 1);
assertEquals("word\tword", r.mWord);
r = null;
// tab or space multiword
mockConnection = new MockConnection("one word\two", "rd", et);
r = EditingUtils.getWordRangeAtCursor(mockConnection, " \t", 2);
assertEquals("one word\tword", r.mWord);
r = null;
// splitting on supplementary character
final String supplementaryChar = "\uD840\uDC8A";
mockConnection = new MockConnection("one word" + supplementaryChar + "wo", "rd", et);
r = EditingUtils.getWordRangeAtCursor(mockConnection, supplementaryChar, 0);
assertEquals("word", r.mWord);
r = null;
}
}
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