103 lines
3.5 KiB
Kotlin
103 lines
3.5 KiB
Kotlin
/*
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* MIT License
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*
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* Copyright (c) 2019 norangebit
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*/
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package it.norangeb.algorithms.graph
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import org.amshove.kluent.`should be equal to`
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import org.amshove.kluent.`should equal`
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import org.spekframework.spek2.Spek
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import org.spekframework.spek2.style.gherkin.Feature
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object DiGraphTest : Spek({
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Feature("directed graph") {
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val graph by memoized { DiGraph() }
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Scenario("add edges") {
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When("add edge 1 -> 4") {
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graph.addEdge(1, 4)
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}
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Then("number of edge should equal to 1") {
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graph.edgeNumber() `should be equal to` 1
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}
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Then("adjacent of 1 should equal listOf(4)") {
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graph.adjacentVertex(1) `should equal` listOf(4)
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}
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Then("adjacent of 4 should be empty") {
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graph.adjacentVertex(4).isEmpty() `should be equal to` true
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}
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When("add edge 1 -> 3, 3 -> 4, 1 -> 5") {
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graph.addEdge(1, 3)
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graph.addEdge(3, 4)
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graph.addEdge(1, 5)
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}
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Then("number of edge should equal to 4") {
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graph.edgeNumber() `should be equal to` 4
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}
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Then("adjacent of 1 should equal listOf(3, 4, 5)") {
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graph.adjacentVertex(1).sorted() `should equal` listOf(3, 4, 5)
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}
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Then("adjacent of 3 should equal listOf(4)") {
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graph.adjacentVertex(3) `should equal` listOf(4)
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}
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}
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Scenario("reverse test") {
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val diGraph by memoized { DiGraph() }
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Given("directed graph 0 -> 2, 0 -> 4, 1 -> 0, 1 -> 2, 4 -> 2") {
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diGraph.addEdge(0, 2)
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diGraph.addEdge(0, 4)
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diGraph.addEdge(1, 0)
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diGraph.addEdge(1, 2)
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diGraph.addEdge(4, 2)
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}
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lateinit var result: DirectedGraph
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When("compute the reversed graph") {
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result = diGraph.reverse()
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}
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Then("adjacent of 0 should euqals listOf(1)") {
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result.adjacentVertex(0) `should equal` listOf(1)
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}
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Then("adjacent of 1 should be empty") {
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result.adjacentVertex(1).isEmpty() `should be equal to` true
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}
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Then("adjacent of 2 should equal listOf(0, 1, 4)") {
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result.adjacentVertex(2).sorted() `should equal` listOf(0, 1, 4)
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}
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}
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}
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}) |