lint/libs/lint-tests/src/test/java/com/android/tools/lint/checks/KeyboardNavigationDetectorTest.java

/*
 * Copyright (C) 2017 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.tools.lint.checks;

import com.android.tools.lint.detector.api.Detector;

@SuppressWarnings("javadoc")
public class KeyboardNavigationDetectorTest extends AbstractCheckTest {

    private static final String DUMMY_FILE_NAME = "res/layout/mywidget.xml";
    private static final String EXPECTED_WARNING_PREFIX =
            "res/layout/mywidget.xml:2: Warning: "
                    + KeyboardNavigationDetector.MESSAGE
                    + " [KeyboardInaccessibleWidget]\n";

    @Override
    protected Detector getDetector() {
        return new KeyboardNavigationDetector();
    }

    public void testFocusableElement_noIssue() {
        lint().files(
                        xml(
                                DUMMY_FILE_NAME,
                                ""
                                        + "<Button xmlns:android=\"http://schemas.android.com/apk/res/android\"\n"
                                        + "    android:clickable=\"true\"\n"
                                        + "    android:focusable=\"true\" />"))
                .run()
                .expectClean();
    }

    public void testNonClickableElement_noIssue() {
        lint().files(
                        xml(
                                DUMMY_FILE_NAME,
                                ""
                                        + "<Button xmlns:android=\"http://schemas.android.com/apk/res/android\"\n"
                                        + "    android:clickable=\"false\"\n"
                                        + "    android:focusable=\"false\" />"))
                .run()
                .expectClean();
    }

    public void testUnspecifiedFocusableElement_triggersIssue() {
        lint().files(
                        xml(
                                DUMMY_FILE_NAME,
                                ""
                                        + "<Button xmlns:android=\"http://schemas.android.com/apk/res/android\"\n"
                                        + "    android:clickable=\"true\" />"))
                .run()
                .expect(
                        EXPECTED_WARNING_PREFIX
                                + "    android:clickable=\"true\" />\n"
                                + "    ~~~~~~~~~~~~~~~~~~~~~~~~\n"
                                + "0 errors, 1 warnings\n")
                .expectFixDiffs(
                        ""
                                + "Fix for res/layout/mywidget.xml line 1: Set focusable=\"true\":\n"
                                + "@@ -3 +3\n"
                                + "-     android:clickable=\"true\" />\n"
                                + "@@ -4 +3\n"
                                + "+     android:clickable=\"true\"\n"
                                + "+     android:focusable=\"true\" />\n");
    }

    public void testUnfocusableElement_triggersIssue() {
        lint().files(
                        xml(
                                DUMMY_FILE_NAME,
                                ""
                                        + "<Button xmlns:android=\"http://schemas.android.com/apk/res/android\"\n"
                                        + "    android:clickable=\"true\"\n"
                                        + "    android:focusable=\"false\" />"))
                .run()
                .expect(
                        EXPECTED_WARNING_PREFIX
                                + "    android:clickable=\"true\"\n"
                                + "    ~~~~~~~~~~~~~~~~~~~~~~~~\n"
                                + "0 errors, 1 warnings\n");
    }
}