Vladimir Sukharev
96 lines
2.3 KiB
Kotlin
Vendored
96 lines
2.3 KiB
Kotlin
Vendored
package codegen.arithmetic.basic
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import kotlin.test.*
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// Check that compiler doesn't optimize it to `true`
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fun selfCmp1(x: Int) = x + 1 > x
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fun selfCmp2(x: Int) = x - 1 < x
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@Test
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fun selfComparison() {
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assertFalse(selfCmp1(Int.MAX_VALUE))
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assertFalse(selfCmp2(Int.MIN_VALUE))
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}
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private fun charCornersMinus(): Int {
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val a: Char = 0xFFFF.toChar()
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val b: Char = 0.toChar()
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return a - b
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}
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private fun charCornersComparison(): Boolean {
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val a = 0xFFFF.toChar()
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val b = 0.toChar()
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return a < b
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}
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@Test
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fun charCornerCases() {
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assertEquals(65535, charCornersMinus())
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assertFalse(charCornersComparison())
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}
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@Test
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fun shifts() {
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assertEquals(-2147483648, 1 shl -1)
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assertEquals(0, 1 shr -1)
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assertEquals(1, 1 shl 32)
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assertEquals(1073741823, -1 ushr 2)
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assertEquals(-1, -1 shr 2)
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}
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@Test
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@kotlin.ExperimentalUnsignedTypes
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fun uintTests() {
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assertEquals(UInt.MAX_VALUE, UInt.MIN_VALUE - 1u)
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}
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@Test
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fun charConversions() {
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assertEquals(97.0, 'a'.toDouble())
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assertEquals(-1, Char.MAX_VALUE.toShort())
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assertEquals(32768, Short.MIN_VALUE.toChar().toInt())
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assertEquals(-1, Char.MAX_VALUE.toByte())
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assertEquals(65408, Byte.MIN_VALUE.toChar().toInt())
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assertEquals(0, Float.MIN_VALUE.toChar().toInt())
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}
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@Test
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fun doubleBasic() {
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assertEquals(1, 0f.compareTo(-0f))
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assertEquals(1, 0.0.compareTo(-0.0))
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assertEquals(1.0, Double.fromBits(1.0.toBits()))
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assertEquals(1.0f, Float.fromBits(1.0f.toBits()))
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assertEquals(Double.NaN, Double.fromBits((0 / 0.0).toBits()))
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assertEquals(Float.NaN, Float.fromBits((0 / 0f).toBits()))
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}
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@Test
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fun integralToFloat() {
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assertEquals(9.223372E18f, Long.MAX_VALUE.toFloat())
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assertEquals(-9.223372E18f, Long.MIN_VALUE.toFloat())
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assertEquals(-2.147483648E9, Int.MIN_VALUE.toDouble())
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assertEquals(2.147483647E9, Int.MAX_VALUE.toDouble())
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assertEquals(2147483647, Double.MAX_VALUE.toInt())
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assertEquals(0, Float.MIN_VALUE.toLong())
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assertEquals(9223372036854775807, Float.MAX_VALUE.toLong())
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assertEquals(0, Double.MIN_VALUE.toInt())
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}
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@Test
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fun compareIntToFloat() {
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assertEquals(1, 0.compareTo(-0.0f))
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assertEquals(0, 0.compareTo(+0.0f))
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}
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@Test
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fun testKt37412() {
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val two = 2.0
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assertEquals(2, two.toInt())
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} |