libraries/stdlib/jdk8/test/collections/IterableTest.kt

/*
 * Copyright 2010-2017 JetBrains s.r.o.
 *
 * 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.
 */

package kotlin.jdk8.collections.test

import org.junit.Test
import kotlin.test.*
import java.util.function.*

class IterableTest {

    val data = listOf("foo", "bar")
    val iterable = Iterable { data.iterator() }

    @Test fun spliterator() {
        val spliterator = iterable.spliterator()

        assertEquals(-1, spliterator.exactSizeIfKnown)
        val expected = data.toMutableList()
        spliterator.forEachRemaining {
            assertEquals(expected.removeAt(0), it)
        }
    }

    @Test fun forEach() {
        val expected = data.toMutableList()
        iterable.forEach(Consumer {
            assertEquals(expected.removeAt(0), it)
        })
    }

    @Test fun forEachRemaining() {
        val expected = data.toMutableList()
        val iterator = iterable.iterator()
        iterator.forEachRemaining(Consumer {
            assertEquals(expected.removeAt(0), it)
        })
    }

}