Iterables.kt
/*
* Copyright (C) 2022 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
@file:JvmName("IterablesKt")
package androidx.test.espresso.util
import androidx.annotation.RestrictTo
import org.hamcrest.Matcher
/**
* A wrapper around kotlin' filter extension that takes a Matcher.
*
* @param iterable the sequence of items to filter
* @param matcher the [Matcher] to perform the filtering.
* @return subset of iterable that matched
* @hide
*/
@RestrictTo(RestrictTo.Scope.LIBRARY_GROUP)
fun <T> filter(iterable: Iterable<T>, matcher: Matcher<T>): Iterable<T> {
return iterable.filter { matcher.matches(it) }
}
/**
* A variant of [filter] that returns a [List]
*
* @hide
*/
@RestrictTo(RestrictTo.Scope.LIBRARY_GROUP)
fun <T> filterToList(iterable: Iterable<T>, matcher: Matcher<T>): List<T> {
return filter(iterable, matcher).toList()
}