Fix a bug where CAPS_WORDS would not be returned.

Also introduce some unit tests that would have caught the bug.

Bug: 17398284
Change-Id: Idb715b7bd2f70992d6cdf4e25ef368809382caef

java/src/com/android/inputmethod/latin/utils/CapsModeUtils.java

@@ -217,7 +217,8 @@ public final class CapsModeUtils {
         // a sentence. If it's neither, the only remaining case is the period so we get the opposite
         // case out of the way.
         if (c == Constants.CODE_QUESTION_MARK || c == Constants.CODE_EXCLAMATION_MARK) {
-            return (TextUtils.CAP_MODE_CHARACTERS | TextUtils.CAP_MODE_SENTENCES) & reqModes;
+            return (TextUtils.CAP_MODE_CHARACTERS | TextUtils.CAP_MODE_WORDS
+                    | TextUtils.CAP_MODE_SENTENCES) & reqModes;
         }
         if (!spacingAndPunctuations.isSentenceSeparator(c) || j <= 0) {
             return (TextUtils.CAP_MODE_CHARACTERS | TextUtils.CAP_MODE_WORDS) & reqModes;

tests/src/com/android/inputmethod/latin/utils/CapsModeUtilsTests.java

@@ -124,5 +124,17 @@ public class CapsModeUtilsTests extends AndroidTestCase {
         allPathsForCaps("Word. ", c | w, sp, false);
         // Armenian period : capitalize if MODE_SENTENCES
         allPathsForCaps("Word\u0589 ", c | w | s, sp, false);
+
+        // Test for sentence terminators
+        sp = job.runInLocale(res, Locale.ENGLISH);
+        allPathsForCaps("Word? ", c | w | s, sp, false);
+        allPathsForCaps("Word?", c | w | s, sp, true);
+        allPathsForCaps("Word?", c, sp, false);
+        allPathsForCaps("Word! ", c | w | s, sp, false);
+        allPathsForCaps("Word!", c | w | s, sp, true);
+        allPathsForCaps("Word!", c, sp, false);
+        allPathsForCaps("Word; ", c | w, sp, false);
+        allPathsForCaps("Word;", c | w, sp, true);
+        allPathsForCaps("Word;", c, sp, false);
     }
 }