1 /*
2  * Copyright (C) 2018 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.navigation.testing
18 
19 import android.os.Bundle
20 import android.support.test.filters.SmallTest
21 import org.junit.Assert.assertEquals
22 import org.junit.Test
23 import org.junit.runner.RunWith
24 import org.junit.runners.JUnit4
25 
26 @RunWith(JUnit4::class)
27 @SmallTest
28 class TestNavigatorTest {
29 
30     @Test
backStacknull31     fun backStack() {
32         val testNavigator = TestNavigator()
33         val destination = testNavigator.createDestination()
34         val args = Bundle()
35         testNavigator.navigate(destination, args, null)
36         assertEquals("TestNavigator back stack size is 1 after navigate",
37                 1,
38                 testNavigator.backStack.size)
39         val (foundDestination, foundArgs) = testNavigator.backStack.last()
40         assertEquals("last() returns last destination navigated to",
41                 destination, foundDestination)
42         assertEquals("last() returns arguments Bundle",
43                 args, foundArgs)
44     }
45 }
46