1 /*
2  * Copyright 2019 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package androidx.appcompat.widget;
18 
19 import static org.junit.Assert.assertFalse;
20 import static org.junit.Assert.assertTrue;
21 
22 import android.app.Activity;
23 import android.content.res.Resources;
24 import android.graphics.drawable.Drawable;
25 import android.graphics.drawable.LayerDrawable;
26 
27 import androidx.appcompat.resources.test.R;
28 import androidx.test.ext.junit.runners.AndroidJUnit4;
29 import androidx.test.filters.SmallTest;
30 import androidx.vectordrawable.graphics.drawable.VectorDrawableCompat;
31 
32 import org.junit.Rule;
33 import org.junit.Test;
34 import org.junit.runner.RunWith;
35 
36 @SuppressWarnings("deprecation")
37 @SmallTest
38 @RunWith(AndroidJUnit4.class)
39 public class VectorEnabledTintResourcesTest {
40     @Rule
41     public final androidx.test.rule.ActivityTestRule<Activity> mActivityTestRule =
42             new androidx.test.rule.ActivityTestRule<>(Activity.class);
43 
44     /**
45      * Ensures that VectorEnabledTintResources delegates calls to the wrapped Resources object.
46      */
47     @Test
testVectorEnabledTintResourcesDelegateBackToOriginalResources()48     public void testVectorEnabledTintResourcesDelegateBackToOriginalResources() {
49         final TestResources testResources =
50                 new TestResources(mActivityTestRule.getActivity().getResources());
51 
52         // First make sure that the flag is false
53         testResources.resetGetDrawableCalled();
54         assertFalse(testResources.wasGetDrawableCalled());
55 
56         // Now wrap in a TintResources instance and get a Drawable
57         final VectorEnabledTintResources tintResources =
58                 new VectorEnabledTintResources(mActivityTestRule.getActivity(), testResources);
59         tintResources.getDrawable(android.R.drawable.ic_delete);
60 
61         // We can't delegate to the wrapped Resource object's getDrawable() because it will break
62         // support for nested vector-enabled tinted resources.
63         assertFalse(testResources.wasGetDrawableCalled());
64 
65         tintResources.getString(android.R.string.ok);
66 
67         // However, we can still delegate other calls.
68         assertTrue(testResources.wasGetStringCalled());
69     }
70 
testNestedVectorEnabledTintResources()71     public void testNestedVectorEnabledTintResources() {
72         Resources tintResources = new VectorEnabledTintResources(mActivityTestRule.getActivity(),
73                         mActivityTestRule.getActivity().getResources());
74         Drawable d = tintResources.getDrawable(R.drawable.vector_nested);
75         assertTrue(d instanceof LayerDrawable);
76 
77         // Nested drawable is loaded using VectorEnabledTintResources.
78         LayerDrawable ld = (LayerDrawable) d;
79         assertTrue(ld.getDrawable(0) instanceof VectorDrawableCompat);
80     }
81 }
82