b1856fe06b
Nobody cares what language this is written in Test: builds Change-Id: I3ed3bce276479fd503e716a06fd4912da8c49eda
71 lines
2.1 KiB
Kotlin
71 lines
2.1 KiB
Kotlin
/*
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* Copyright (C) 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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@file:JvmName("ParcelUtils")
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package com.android.testutils
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import android.os.Parcel
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import android.os.Parcelable
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import kotlin.test.assertTrue
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import kotlin.test.fail
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/**
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* Return a new instance of `T` after being parceled then unparceled.
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*/
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fun <T : Parcelable> parcelingRoundTrip(source: T): T {
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val creator: Parcelable.Creator<T>
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try {
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creator = source.javaClass.getField("CREATOR").get(null) as Parcelable.Creator<T>
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} catch (e: IllegalAccessException) {
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fail("Missing CREATOR field: " + e.message)
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} catch (e: NoSuchFieldException) {
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fail("Missing CREATOR field: " + e.message)
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}
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var p = Parcel.obtain()
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source.writeToParcel(p, /* flags */ 0)
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p.setDataPosition(0)
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val marshalled = p.marshall()
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p = Parcel.obtain()
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p.unmarshall(marshalled, 0, marshalled.size)
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p.setDataPosition(0)
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return creator.createFromParcel(p)
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}
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/**
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* Assert that after being parceled then unparceled, `source` is equal to the original
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* object. If a customized equals function is provided, uses the provided one.
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*/
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@JvmOverloads
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fun <T : Parcelable> assertParcelingIsLossless(
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source: T,
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equals: (T, T) -> Boolean = { a, b -> a == b }
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) {
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val actual = parcelingRoundTrip(source)
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assertTrue(equals(source, actual), "Expected $source, but was $actual")
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}
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@JvmOverloads
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fun <T : Parcelable> assertParcelSane(
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obj: T,
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fieldCount: Int,
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equals: (T, T) -> Boolean = { a, b -> a == b }
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) {
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assertFieldCountEquals(fieldCount, obj::class.java)
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assertParcelingIsLossless(obj, equals)
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}
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