1 /*
2  * Copyright (C) 2023 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 android.tools.flicker.subject
18 
19 import android.tools.Timestamp
20 import android.tools.flicker.assertions.Fact
21 import android.tools.io.Reader
22 
23 /** Base subject for flicker assertions */
24 abstract class FlickerSubject {
25     abstract val timestamp: Timestamp
26     internal open val reader: Reader? = null
27     internal open val selfFacts: List<Fact> = emptyList()
28 
checknull29     fun check(lazyMessage: () -> String): CheckSubjectBuilder {
30         return CheckSubjectBuilder(this.timestamp, this.selfFacts, this.reader, lazyMessage)
31     }
32 
33     companion object {
34         const val ASSERTION_TAG = "Assertion"
35     }
36 }
37