libraries/stdlib/test/generated/allequal/AllEqualIterablesTest.kt

/*
 * Copyright 2010-2026 JetBrains s.r.o. and Kotlin Programming Language contributors.
 * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
 */


package test.generated.allequal

//
// NOTE: THIS FILE IS AUTO-GENERATED by the AllEqualTestGenerator.kt
// See: https://github.com/JetBrains/kotlin/tree/master/libraries/stdlib
//

import kotlin.test.*

class AllEqualIterablesTest {

    @Test
    fun allEqual() {
        assertTrue(listOf<String>().allEqual())
        assertTrue(listOf("a").allEqual())
        assertTrue(listOf("a", "a").allEqual())
        assertTrue(listOf("a", "a", "a").allEqual())
        assertFalse(listOf("a", "b").allEqual())
        assertFalse(listOf("b", "a").allEqual())
        assertFalse(listOf("a", "a", "b").allEqual())
        assertFalse(listOf("b", "a", "a").allEqual())
    }

    @Test
    fun allEqualBy() {
        assertTrue(listOf<String>().allEqualBy { it.length })
        assertTrue(listOf("a").allEqualBy { it.length })
        assertTrue(listOf("a").allEqualBy { error("should not be called") })
        assertTrue(listOf("a", "b", "c").allEqualBy { it.length })
        assertFalse(listOf("a", "bb").allEqualBy { it.length })
        assertTrue(listOf("a", "bb").allEqualBy { 0 })
        assertTrue(listOf("a", "b", "c").allEqualBy { null })
    }

    @Test
    fun allEqualNaNDouble() {
        assertTrue(listOf(Double.NaN, Double.NaN).allEqual())
        assertTrue(listOf(Double.NaN, Double.NaN, Double.NaN).allEqual())
        assertFalse(listOf(Double.NaN, 1.0).allEqual())
        assertFalse(listOf(1.0, Double.NaN).allEqual())
        assertFalse(listOf(Double.NaN, 1.0, Double.NaN).allEqual())
    }

    @Test
    fun allEqualNegativeZeroDouble() {
        assertTrue(listOf(0.0, 0.0).allEqual())
        assertTrue(listOf(-0.0, -0.0).allEqual())
        assertFalse(listOf(0.0, -0.0).allEqual())
        assertFalse(listOf(-0.0, 0.0).allEqual())
    }

    @Test
    fun allEqualByNaNDouble() {
        assertTrue(listOf(Double.NaN, Double.NaN).allEqualBy { it })
        assertTrue(listOf(Double.NaN, Double.NaN, Double.NaN).allEqualBy { it })
        assertFalse(listOf(Double.NaN, 1.0).allEqualBy { it })
        assertFalse(listOf(1.0, Double.NaN).allEqualBy { it })
        assertFalse(listOf(Double.NaN, 1.0, Double.NaN).allEqualBy { it })
    }

    @Test
    fun allEqualByNegativeZeroDouble() {
        assertTrue(listOf(0.0, 0.0).allEqualBy { it })
        assertTrue(listOf(-0.0, -0.0).allEqualBy { it })
        assertFalse(listOf(0.0, -0.0).allEqualBy { it })
        assertFalse(listOf(-0.0, 0.0).allEqualBy { it })
    }

    @Test
    fun allEqualDifferentNaNBitsDouble() {
        assertTrue(listOf(Double.NaN, Double.fromBits(0xFFF80000L shl 32)).allEqual())
        assertTrue(listOf(Double.NaN, Double.fromBits(0xFFF80000L shl 32), Double.fromBits(0x7FF8000000000001L)).allEqual())
        assertTrue(listOf(Double.fromBits(0x7FF8000000000001L), Double.fromBits(0xFFF80000L shl 32), Double.NaN).allEqual())
        assertFalse(listOf(Double.NaN, 1.0).allEqual())
        assertFalse(listOf(1.0, Double.fromBits(0xFFF80000L shl 32)).allEqual())
    }

    @Test
    fun allEqualByDifferentNaNBitsDouble() {
        assertTrue(listOf(Double.NaN, Double.fromBits(0xFFF80000L shl 32)).allEqualBy { it })
        assertTrue(listOf(Double.NaN, Double.fromBits(0xFFF80000L shl 32), Double.fromBits(0x7FF8000000000001L)).allEqualBy { it })
        assertFalse(listOf(Double.NaN, 1.0).allEqualBy { it })
    }

    @Test
    fun allEqualNaNFloat() {
        assertTrue(listOf(Float.NaN, Float.NaN).allEqual())
        assertTrue(listOf(Float.NaN, Float.NaN, Float.NaN).allEqual())
        assertFalse(listOf(Float.NaN, 1.0f).allEqual())
        assertFalse(listOf(1.0f, Float.NaN).allEqual())
        assertFalse(listOf(Float.NaN, 1.0f, Float.NaN).allEqual())
    }

    @Test
    fun allEqualNegativeZeroFloat() {
        assertTrue(listOf(0.0f, 0.0f).allEqual())
        assertTrue(listOf(-0.0f, -0.0f).allEqual())
        assertFalse(listOf(0.0f, -0.0f).allEqual())
        assertFalse(listOf(-0.0f, 0.0f).allEqual())
    }

    @Test
    fun allEqualByNaNFloat() {
        assertTrue(listOf(Float.NaN, Float.NaN).allEqualBy { it })
        assertTrue(listOf(Float.NaN, Float.NaN, Float.NaN).allEqualBy { it })
        assertFalse(listOf(Float.NaN, 1.0f).allEqualBy { it })
        assertFalse(listOf(1.0f, Float.NaN).allEqualBy { it })
        assertFalse(listOf(Float.NaN, 1.0f, Float.NaN).allEqualBy { it })
    }

    @Test
    fun allEqualByNegativeZeroFloat() {
        assertTrue(listOf(0.0f, 0.0f).allEqualBy { it })
        assertTrue(listOf(-0.0f, -0.0f).allEqualBy { it })
        assertFalse(listOf(0.0f, -0.0f).allEqualBy { it })
        assertFalse(listOf(-0.0f, 0.0f).allEqualBy { it })
    }

    @Test
    fun allEqualDifferentNaNBitsFloat() {
        assertTrue(listOf(Float.NaN, Float.fromBits(0xFFFC0000.toInt())).allEqual())
        assertTrue(listOf(Float.NaN, Float.fromBits(0xFFFC0000.toInt()), Float.fromBits(0x7FC00001)).allEqual())
        assertTrue(listOf(Float.fromBits(0x7FC00001), Float.fromBits(0xFFFC0000.toInt()), Float.NaN).allEqual())
        assertFalse(listOf(Float.NaN, 1.0f).allEqual())
        assertFalse(listOf(1.0f, Float.fromBits(0xFFFC0000.toInt())).allEqual())
    }

    @Test
    fun allEqualByDifferentNaNBitsFloat() {
        assertTrue(listOf(Float.NaN, Float.fromBits(0xFFFC0000.toInt())).allEqualBy { it })
        assertTrue(listOf(Float.NaN, Float.fromBits(0xFFFC0000.toInt()), Float.fromBits(0x7FC00001)).allEqualBy { it })
        assertFalse(listOf(Float.NaN, 1.0f).allEqualBy { it })
    }
}