1 files changed, 100 insertions, 0 deletions
diff --git a/tests/src/com/android/inputmethod/latin/UserBigramTests.java b/tests/src/com/android/inputmethod/latin/UserBigramTests.java
new file mode 100644
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--- /dev/null
+++ b/tests/src/com/android/inputmethod/latin/UserBigramTests.java
@@ -0,0 +1,100 @@
+/*
+ * 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 com.android.inputmethod.latin.tests.R;
+import java.util.Locale;
+
+public class UserBigramTests extends AndroidTestCase {
+    private static final String TAG = "UserBigramTests";
+
+    private static final int SUGGESTION_STARTS = 6;
+    private static final int MAX_DATA = 20;
+    private static final int DELETE_DATA = 10;
+
+    private SuggestHelper sh;
+
+    @Override
+    protected void setUp() {
+        int[] resId = new int[] { R.raw.test };
+        sh = new SuggestHelper(TAG, getTestContext(), resId, MAX_DATA, DELETE_DATA);
+    }
+
+    /************************** Tests ************************/
+
+    /**
+     * Test suggestion started at right time
+     */
+    public void testUserBigram() {
+        for (int i = 0; i < SUGGESTION_STARTS; i++) sh.addToUserBigram(pair1);
+        for (int i = 0; i < (SUGGESTION_STARTS - 1); i++) sh.addToUserBigram(pair2);
+
+        assertTrue(sh.isUserBigramSuggestion("user", 'b', "bigram"));
+        assertFalse(sh.isUserBigramSuggestion("android", 'p', "platform"));
+    }
+
+    /**
+     * Test loading correct (locale) bigrams
+     */
+    public void testOpenAndClose() {
+        for (int i = 0; i < SUGGESTION_STARTS; i++) sh.addToUserBigram(pair1);
+        assertTrue(sh.isUserBigramSuggestion("user", 'b', "bigram"));
+
+        // change to fr_FR
+        sh.changeUserBigramLocale(getTestContext(), Locale.FRANCE);
+        for (int i = 0; i < SUGGESTION_STARTS; i++) sh.addToUserBigram(pair3);
+        assertTrue(sh.isUserBigramSuggestion("locale", 'f', "france"));
+        assertFalse(sh.isUserBigramSuggestion("user", 'b', "bigram"));
+
+        // change back to en_US
+        sh.changeUserBigramLocale(getTestContext(), Locale.US);
+        assertFalse(sh.isUserBigramSuggestion("locale", 'f', "france"));
+        assertTrue(sh.isUserBigramSuggestion("user", 'b', "bigram"));
+    }
+
+    /**
+     * Test data gets pruned when it is over maximum
+     */
+    public void testPruningData() {
+        for (int i = 0; i < SUGGESTION_STARTS; i++) sh.addToUserBigram(sentence0);
+        sh.flushUserBigrams();
+        assertTrue(sh.isUserBigramSuggestion("Hello", 'w', "world"));
+
+        sh.addToUserBigram(sentence1);
+        sh.addToUserBigram(sentence2);
+        assertTrue(sh.isUserBigramSuggestion("Hello", 'w', "world"));
+
+        // pruning should happen
+        sh.addToUserBigram(sentence3);
+        sh.addToUserBigram(sentence4);
+
+        // trying to reopen database to check pruning happened in database
+        sh.changeUserBigramLocale(getTestContext(), Locale.US);
+        assertFalse(sh.isUserBigramSuggestion("Hello", 'w', "world"));
+    }
+
+    final String[] pair1 = new String[] {"user", "bigram"};
+    final String[] pair2 = new String[] {"android","platform"};
+    final String[] pair3 = new String[] {"locale", "france"};
+    final String sentence0 = "Hello world";
+    final String sentence1 = "This is a test for user input based bigram";
+    final String sentence2 = "It learns phrases that contain both dictionary and nondictionary "
+            + "words";
+    final String sentence3 = "This should give better suggestions than the previous version";
+    final String sentence4 = "Android stock keyboard is improving";
+}