Ilya Gorbunov
f18b9caa8d
JVM: Make MIN_VALUE and MAX_VALUE not an extension but member constant properties of Int, Long, Short and Byte companion objects.
71 lines
2.4 KiB
Kotlin
71 lines
2.4 KiB
Kotlin
package numbers
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import org.junit.Test as test
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import kotlin.test.*
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class NumbersTest {
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test fun intMinMaxValues() {
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assertTrue(Int.MIN_VALUE < 0)
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assertTrue(Int.MAX_VALUE > 0)
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// overflow behavior
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// doesn't hold for JS Number
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// assertEquals(Int.MIN_VALUE, Int.MAX_VALUE + 1)
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}
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test fun longMinMaxValues() {
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assertTrue(Long.MIN_VALUE < 0)
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assertTrue(Long.MAX_VALUE > 0)
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// overflow behavior
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assertEquals(Long.MIN_VALUE, Long.MAX_VALUE + 1)
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assertEquals(Long.MAX_VALUE, Long.MIN_VALUE - 1)
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}
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test fun shortMinMaxValues() {
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assertTrue(Short.MIN_VALUE < 0)
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assertTrue(Short.MAX_VALUE > 0)
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// overflow behavior
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assertEquals(Short.MIN_VALUE, (Short.MAX_VALUE + 1).toShort())
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assertEquals(Short.MAX_VALUE, (Short.MIN_VALUE - 1).toShort())
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}
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test fun byteMinMaxValues() {
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assertTrue(Byte.MIN_VALUE < 0)
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assertTrue(Byte.MAX_VALUE > 0)
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// overflow behavior
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assertEquals(Byte.MIN_VALUE, (Byte.MAX_VALUE + 1).toByte())
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assertEquals(Byte.MAX_VALUE, (Byte.MIN_VALUE - 1).toByte())
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}
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test fun doubleProperties() {
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for (value in listOf(1.0, 0.0))
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doTestNumber(value)
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for (value in listOf(Double.POSITIVE_INFINITY, Double.NEGATIVE_INFINITY))
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doTestNumber(value, isInfinite = true)
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doTestNumber(Double.NaN, isNaN = true)
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}
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test fun floatProperties() {
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for (value in listOf(1.0F, 0.0F))
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doTestNumber(value)
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for (value in listOf(Float.POSITIVE_INFINITY, Float.NEGATIVE_INFINITY))
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doTestNumber(value, isInfinite = true)
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doTestNumber(Float.NaN, isNaN = true)
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}
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private fun doTestNumber(value: Double, isNaN: Boolean = false, isInfinite: Boolean = false) {
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assertEquals(isNaN, value.isNaN(), "Expected $value to have isNaN: $isNaN")
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assertEquals(isInfinite, value.isInfinite(), "Expected $value to have isInfinite: $isInfinite")
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assertEquals(!isNaN && !isInfinite, value.isFinite())
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}
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private fun doTestNumber(value: Float, isNaN: Boolean = false, isInfinite: Boolean = false) {
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assertEquals(isNaN, value.isNaN(), "Expected $value to have isNaN: $isNaN")
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assertEquals(isInfinite, value.isInfinite(), "Expected $value to have isInfinite: $isInfinite")
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assertEquals(!isNaN && !isInfinite, value.isFinite())
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}
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} |