Denis Zharkov
27 lines
858 B
Kotlin
27 lines
858 B
Kotlin
package test.collections
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import org.junit.Test as test
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import kotlin.test.assertEquals
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class StreamJVMTest {
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test fun filterIsInstance() {
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val src: Stream<Any> = listOf(1,2,3.toDouble(), "abc", "cde").stream()
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val ints: Stream<Int> = src.filterIsInstance<Int>()
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assertEquals(arrayListOf(1,2), ints.toArrayList())
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val doubles: Stream<Double> = src.filterIsInstance<Double>()
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assertEquals(arrayListOf(3.0), doubles.toArrayList())
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val strings: Stream<String> = src.filterIsInstance<String>()
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assertEquals(arrayListOf("abc", "cde"), strings.toArrayList())
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val anys: Stream<Any> = src.filterIsInstance<Any>()
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assertEquals(src.toList(), anys.toArrayList())
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val chars: Stream<Char> = src.filterIsInstance<Char>()
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assertEquals(0, chars.toArrayList().size())
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}
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}
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