Ilya Gorbunov
26 lines
847 B
Kotlin
26 lines
847 B
Kotlin
package test.collections
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import kotlin.test.*
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class SequenceJVMTest {
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@Test fun filterIsInstance() {
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val src: Sequence<Any> = listOf(1, 2, 3.toDouble(), "abc", "cde").asSequence()
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val intValues: Sequence<Int> = src.filterIsInstance<Int>()
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assertEquals(listOf(1, 2), intValues.toList())
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val doubleValues: Sequence<Double> = src.filterIsInstance<Double>()
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assertEquals(listOf(3.0), doubleValues.toList())
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val stringValues: Sequence<String> = src.filterIsInstance<String>()
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assertEquals(listOf("abc", "cde"), stringValues.toList())
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val anyValues: Sequence<Any> = src.filterIsInstance<Any>()
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assertEquals(src.toList(), anyValues.toList())
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val charValues: Sequence<Char> = src.filterIsInstance<Char>()
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assertEquals(0, charValues.toList().size)
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}
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}
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