Merge "Fix a race condition with backspaces"

                // If there is a selection, remove it.

                final int lengthToDelete = mLastSelectionEnd - mLastSelectionStart;

                mConnection.setSelection(mLastSelectionEnd, mLastSelectionEnd);

                // Reset mLastSelectionEnd to mLastSelectionStart. This is what is supposed to

                // happen, and if it's wrong, the next call to onUpdateSelection will correct it,

                // but we want to set it right away to avoid it being used with the wrong values

                // later (typically, in a subsequent press on backspace).

                mLastSelectionEnd = mLastSelectionStart;

                mConnection.deleteSurroundingText(lengthToDelete, 0);

            } else {

                // There is no selection, just delete one character.

        assertEquals("delete selection", EXPECTED_RESULT, mTextView.getText().toString());

    }

    public void testDeleteSelectionTwice() {

        final String STRING_TO_TYPE = "some text delete me some text";

        final int typedLength = STRING_TO_TYPE.length();

        final int SELECTION_START = 10;

        final int SELECTION_END = 19;

        final String EXPECTED_RESULT = "some text some text";

        type(STRING_TO_TYPE);

        // There is no IMF to call onUpdateSelection for us so we must do it by hand.

        // Send once to simulate the cursor actually responding to the move caused by typing.

        // This is necessary because LatinIME is bookkeeping to avoid confusing a real cursor

        // move with a move triggered by LatinIME inputting stuff.

        mLatinIME.onUpdateSelection(0, 0, typedLength, typedLength, -1, -1);

        mInputConnection.setSelection(SELECTION_START, SELECTION_END);

        // And now we simulate the user actually selecting some text.

        mLatinIME.onUpdateSelection(typedLength, typedLength,

                SELECTION_START, SELECTION_END, -1, -1);

        type(Constants.CODE_DELETE);

        type(Constants.CODE_DELETE);

        assertEquals("delete selection twice", EXPECTED_RESULT, mTextView.getText().toString());

    }

    public void testAutoCorrect() {

        final String STRING_TO_TYPE = "tgis ";

        final String EXPECTED_RESULT = "this ";