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