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added class MapDiffUtilsTests for testing MapDiff
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akkkihi
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package dev.inmo.micro_utils.common
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import kotlin.random.Random
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import kotlin.test.Test
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import kotlin.test.assertEquals
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class MapDiffUtilsTests {
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private fun <K, V> compareFun(): (K, V, V) -> Boolean = { _, a, b -> a == b }
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@Test
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fun testMapDiffRemoved() {
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val map1 = mapOf("a" to 1, "b" to 2, "c" to 3)
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val map2 = mapOf("a" to 1, "c" to 3, "d" to 4)
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val diff = map1.diff(map2)
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assertEquals(mapOf("b" to 2), diff.removed)
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}
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@Test
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fun testMapDiffAdded() {
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val map1 = mapOf("a" to 1, "b" to 2, "c" to 3)
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val map2 = mapOf("a" to 1, "c" to 3, "d" to 4)
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val diff = map1.diff(map2)
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assertEquals(mapOf("d" to 4), diff.added)
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}
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@Test
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fun testMapDiffChanged() {
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val map1 = mapOf("a" to 1, "b" to 2, "c" to 3)
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val map2 = mapOf("a" to 1, "c" to 5, "d" to 4)
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val diff = map1.diff(map2)
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assertEquals(mapOf("c" to (3 to 5)), diff.changed)
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}
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@Test
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fun testMapDiffRemovedWithCompareFun() {
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val map1 = mapOf("a" to 1, "b" to 2, "c" to 3)
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val map2 = mapOf("a" to 1, "c" to 3, "d" to 4)
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val diff = map1.diff(map2, compareFun())
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assertEquals(mapOf("b" to 2), diff.removed)
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}
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@Test
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fun testMapDiffAddedWithCompareFun() {
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val map1 = mapOf("a" to 1, "b" to 2, "c" to 3)
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val map2 = mapOf("a" to 1, "c" to 3, "d" to 4)
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val diff = map1.diff(map2, compareFun())
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assertEquals(mapOf("d" to 4), diff.added)
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}
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@Test
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fun testMapDiffChangedWithCompareFun() {
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val map1 = mapOf("a" to 1, "b" to 2, "c" to 3)
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val map2 = mapOf("a" to 1, "c" to 5, "d" to 4)
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val diff = map1.diff(map2) { _, v1, v2 -> v1 == v2 }
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assertEquals(mapOf("c" to (3 to 5)), diff.changed)
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}
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@Test
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fun testMapDiffRemovedStrictComparison() {
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val map1 = mapOf("a" to 1, "b" to 2, "c" to 3)
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val map2 = mapOf("a" to 1, "c" to 3, "d" to 4)
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val diff = map1.diff(map2, true)
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assertEquals(mapOf("b" to 2), diff.removed)
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}
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@Test
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fun testMapDiffAddedStrictComparison() {
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val map1 = mapOf("a" to 1, "b" to 2, "c" to 3)
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val map2 = mapOf("a" to 1, "c" to 3, "d" to 4)
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val diff = map1.diff(map2, true)
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assertEquals(mapOf("d" to 4), diff.added)
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}
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@Test
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fun testMapDiffChangedStrictComparison() {
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val map1 = mapOf("a" to 1, "b" to 2, "c" to 3)
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val map2 = mapOf("a" to 1, "c" to 5, "d" to 4)
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val diff = map1.diff(map2, true)
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assertEquals(mapOf("c" to (3 to 5)), diff.changed)
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}
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@Test
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@OptIn(Warning::class)
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fun testApplyMapDiffRemoved() {
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val originalMap = mutableMapOf("a" to 1, "b" to 2, "c" to 3)
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val diff = MapDiff(mapOf("b" to 2), emptyMap(), emptyMap())
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originalMap.applyDiff(diff)
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assertEquals(mapOf("a" to 1, "c" to 3), originalMap)
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}
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@Test
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@OptIn(Warning::class)
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fun testApplyMapDiffChanged() {
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val originalMap = mutableMapOf("a" to 1, "b" to 2, "c" to 3)
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val diff = MapDiff(emptyMap(), mapOf("b" to (2 to 4)), emptyMap())
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originalMap.applyDiff(diff)
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assertEquals(mapOf("a" to 1, "b" to 4, "c" to 3), originalMap)
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}
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@Test
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@OptIn(Warning::class)
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fun testApplyMapDiffAdded() {
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val originalMap = mutableMapOf("a" to 1, "b" to 2, "c" to 3)
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val diff = MapDiff(emptyMap(), emptyMap(), mapOf("d" to 4))
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originalMap.applyDiff(diff)
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assertEquals(mapOf("a" to 1, "b" to 2, "c" to 3, "d" to 4), originalMap)
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}
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@Test
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@OptIn(Warning::class)
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fun testApplyMapDiffMixed() {
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val originalMap = mutableMapOf("a" to 1, "b" to 2, "c" to 3)
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val diff = MapDiff(mapOf("b" to 2), mapOf("c" to (3 to 5)), mapOf("d" to 4))
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originalMap.applyDiff(diff)
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assertEquals(mapOf("a" to 1, "c" to 5, "d" to 4), originalMap)
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}
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@Test
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@OptIn(Warning::class)
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fun testMapDiffWorksStrictComparison() {
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val oldMap = mutableMapOf<Int, String>()
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val newMap = mutableMapOf<Int, String>()
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for (i in 0 until 10) {
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oldMap[i] = "old$i"
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newMap[i] = "new$i"
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}
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oldMap[0] = "old0"
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oldMap[2] = "old2"
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oldMap[4] = "old4"
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newMap[0] = "new0"
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newMap[2] = "new2"
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newMap[4] = "new4"
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newMap[10] = "new10"
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newMap[11] = "new11"
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newMap.remove(1)
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newMap.remove(3)
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val mapDiff = oldMap.diff(newMap, true)
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val removed = mapOf(
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1 to "old1",
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3 to "old3"
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)
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val added = mapOf(
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10 to "new10",
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11 to "new11"
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)
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val changed = oldMap.keys.intersect(newMap.keys).associateWith {
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oldMap[it] to newMap[it]
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}
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val equalMapDiff = MapDiff(removed, changed, added)
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assertEquals(
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added,
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mapDiff.added
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)
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assertEquals(
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equalMapDiff.removed,
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mapDiff.removed
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)
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assertEquals(
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equalMapDiff.changed,
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mapDiff.changed
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)
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}
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@Test
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fun testMapDiffWorksWithEqualValuesStrictComparison() {
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val oldMap = mutableMapOf<String, Int>()
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val newMap = mutableMapOf<String, Int>()
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for (i in 0 until 10) {
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val value = Random.nextInt()
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oldMap[i.toString()] = value
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newMap[i.toString()] = value
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}
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val mapDiff = oldMap.diff(newMap, true)
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val mergedValues = oldMap.keys.intersect(newMap.keys).associateWith {
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oldMap[it] to newMap[it]
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}
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assertEquals(
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mergedValues,
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mapDiff.changed,
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)
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assertEquals(
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emptyMap(),
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mapDiff.removed
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)
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assertEquals(
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emptyMap(),
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mapDiff.added
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)
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}
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}
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