bridge/tests/src/com/android/layoutlib/bridge/android/BridgeContextTest.java

/*
 * Copyright (C) 2018 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.layoutlib.bridge.android;

import com.android.ide.common.rendering.api.SessionParams;
import com.android.layoutlib.bridge.impl.RenderAction;
import com.android.layoutlib.bridge.impl.RenderActionTestUtil;
import com.android.layoutlib.bridge.intensive.RenderTestBase;
import com.android.layoutlib.bridge.intensive.setup.ConfigGenerator;
import com.android.layoutlib.bridge.intensive.setup.LayoutLibTestCallback;
import com.android.layoutlib.bridge.intensive.setup.LayoutPullParser;

import org.junit.Test;

import android.R.attr;
import android.R.style;
import android.content.Context;
import android.content.res.Configuration;
import android.content.res.TypedArray;
import android.util.DisplayMetrics;
import android.view.ContextThemeWrapper;

import static org.junit.Assert.assertTrue;

public class BridgeContextTest extends RenderTestBase {
    @Test
    public void basic() throws ClassNotFoundException {
        // Setup
        // Create the layout pull parser for our resources (empty.xml can not be part of the test
        // app as it won't compile).
        LayoutPullParser parser = LayoutPullParser.createFromPath("/empty.xml");
        // Create LayoutLibCallback.
        LayoutLibTestCallback layoutLibCallback =
                new LayoutLibTestCallback(getLogger(), mDefaultClassLoader);
        layoutLibCallback.initResources();
        SessionParams params = getSessionParamsBuilder()
                .setParser(parser)
                .setCallback(layoutLibCallback)
                .setTheme("Theme.Material", false)
                .build();
        DisplayMetrics metrics = new DisplayMetrics();
        Configuration configuration = RenderAction.getConfiguration(params);
        BridgeContext context = new BridgeContext(params.getProjectKey(), metrics, params.getResources(),
                params.getAssets(), params.getLayoutlibCallback(), configuration,
                params.getTargetSdkVersion(), params.isRtlSupported(), true, true);

        context.initResources();
        BridgeContext oldContext = RenderActionTestUtil.setBridgeContext(context);
        try {
            Context themeContext = new ContextThemeWrapper(context, style.Theme_Material);
            // First we try to get the style from the ?attr/editTextStyle fallback value.
            // We pass an invalid value to defStyleRes
            TypedArray array = themeContext.obtainStyledAttributes(null,
                            new int[]{attr.clickable}, attr.editTextStyle, Integer.MAX_VALUE);
            assertTrue(array.getBoolean(0, false));
            // Now, we try to get it directly from the Widget.EditText. We pass an invalid value
            // to defStyleAttr so it fails and falls back to the defStyleRes
            array = themeContext.obtainStyledAttributes(null,
                    new int[]{attr.clickable}, Integer.MAX_VALUE,
                    style.Widget_EditText);
            assertTrue(array.getBoolean(0, false));

        } finally {
            RenderActionTestUtil.setBridgeContext(oldContext);
            context.disposeResources();
        }

        // This message is expected when asking for an invalid defStyleAttr
        sRenderMessages.removeIf(msg ->
                msg.startsWith("Failed to find the style corresponding to the id"));
    }

    @Test
    public void checkNoErrorWhenUsingDefaults() throws ClassNotFoundException {
        // Setup
        // Create the layout pull parser for our resources (empty.xml can not be part of the test
        // app as it won't compile).
        LayoutPullParser parser = LayoutPullParser.createFromPath("/empty.xml");
        // Create LayoutLibCallback.
        LayoutLibTestCallback layoutLibCallback =
                new LayoutLibTestCallback(getLogger(), mDefaultClassLoader);
        layoutLibCallback.initResources();
        SessionParams params = getSessionParamsBuilder()
                .setParser(parser)
                .setCallback(layoutLibCallback)
                .setTheme("Theme.Material", false)
                .build();
        DisplayMetrics metrics = new DisplayMetrics();
        Configuration configuration = RenderAction.getConfiguration(params);
        BridgeContext context = new BridgeContext(params.getProjectKey(), metrics, params.getResources(),
                params.getAssets(), params.getLayoutlibCallback(), configuration,
                params.getTargetSdkVersion(), params.isRtlSupported(), true, true);

        context.initResources();
        BridgeContext oldContext = RenderActionTestUtil.setBridgeContext(context);
        try {
            Context themeContext = new ContextThemeWrapper(context, style.Theme_Material);
            // First we try to get the style from the ?attr/editTextStyle fallback value.
            // We pass an invalid value to defStyleRes
            themeContext.obtainStyledAttributes(null,
                    new int[]{attr.clickable}, 0, style.Widget_EditText);
            themeContext.obtainStyledAttributes(null,
                    new int[]{attr.clickable}, attr.editTextStyle, 0);
        } finally {
            RenderActionTestUtil.setBridgeContext(oldContext);
            context.disposeResources();
        }


    }
}