BaseDataBinderTest.java revision fead9ca09b117136b35bc5bf137340a754f9eddd 
1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *      http://www.apache.org/licenses/LICENSE-2.0
7 * Unless required by applicable law or agreed to in writing, software
8 * distributed under the License is distributed on an "AS IS" BASIS,
9 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
10 * See the License for the specific language governing permissions and
11 * limitations under the License.
12 */
13
14package android.databinding.testapp;
15
16import android.databinding.ViewDataBinding;
17
18import android.content.Context;
19import android.content.pm.ActivityInfo;
20import android.os.Looper;
21import android.test.ActivityInstrumentationTestCase2;
22import android.util.Log;
23
24import java.io.PrintWriter;
25import java.io.StringWriter;
26import java.lang.reflect.Method;
27
28public class BaseDataBinderTest<T extends ViewDataBinding>
29        extends ActivityInstrumentationTestCase2<TestActivity> {
30    protected Class<T> mBinderClass;
31    private int mOrientation;
32    protected T mBinder;
33
34    public BaseDataBinderTest(final Class<T> binderClass) {
35        this(binderClass, ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
36    }
37
38    public BaseDataBinderTest(final Class<T> binderClass, final int orientation) {
39        super(TestActivity.class);
40        mBinderClass = binderClass;
41        mOrientation = orientation;
42    }
43
44    @Override
45    protected void setUp() throws Exception {
46        super.setUp();
47        getActivity().setRequestedOrientation(mOrientation);
48        createBinder();
49    }
50
51    public boolean isMainThread() {
52        return Looper.myLooper() == Looper.getMainLooper();
53    }
54
55    protected void createBinder() {
56        mBinder = null;
57        getActivity().runOnUiThread(new Runnable() {
58            @Override
59            public void run() {
60                Method method = null;
61                try {
62                    method = mBinderClass.getMethod("inflate", Context.class);
63                    mBinder = (T) method.invoke(null, getActivity());
64                    getActivity().setContentView(mBinder.getRoot());
65                } catch (Exception e) {
66                    StringWriter sw = new StringWriter();
67                    PrintWriter pw = new PrintWriter(sw);
68                    e.printStackTrace(pw);
69                    fail("Error creating binder: " + sw.toString());
70                }
71            }
72        });
73        if (!isMainThread()) {
74            getInstrumentation().waitForIdleSync();
75        }
76        assertNotNull(mBinder);
77    }
78
79    protected void assertMethod(Class<?> klass, String methodName) throws NoSuchMethodException {
80        assertEquals(klass, mBinder.getClass().getDeclaredMethod(methodName).getReturnType());
81    }
82
83    protected void assertField(Class<?> klass, String fieldName) throws NoSuchFieldException {
84        assertEquals(klass, mBinder.getClass().getDeclaredField(fieldName).getType());
85    }
86
87    protected void assertNoField(String fieldName) {
88        Exception[] ex = new Exception[1];
89        try {
90            mBinder.getClass().getDeclaredField(fieldName);
91        } catch (NoSuchFieldException e) {
92            ex[0] = e;
93        }
94        assertNotNull(ex[0]);
95    }
96}
97