Advent of Code 2017 Day 21 Unit tests

2017Day21Tests.kt

package aoc207

import org.junit.jupiter.api.Assertions.assertEquals
import org.junit.jupiter.api.Assertions.assertTrue
import org.junit.jupiter.api.Test

internal class Day21Test {

    @Test
    fun p1() {
        assertEquals(12, Day21("../.# => ##./#../...\n" +
                ".#./..#/### => #..#/..../..../#..#").part1(2))
    }

    @Test
    fun p1VariantsTwo() {
        //ab
        //cd
        val variants = Day21("").variants("ab/cd")
        assertTrue(variants.contains("ab/cd")) //Original
        assertTrue(variants.contains("cd/ab")) // Flipped vertical
        assertTrue(variants.contains("ba/dc")) // Flipped horizontal
        //ab ca dc  bd  ab
        //cd db ba  ac  cd
        assertTrue(variants.contains("ca/db")) //Rotate CW once
        assertTrue(variants.contains("dc/ba")) //Rotate CW twice
        assertTrue(variants.contains("bd/ac")) //Rotate CW three times
    }

    @Test
    fun p1VariantsThree() {
        //abc
        //def
        //ghi
        val variants = Day21("").variants("abc/def/ghi")
        assertTrue(variants.contains("abc/def/ghi")) //Original
        assertTrue(variants.contains("ghi/def/abc")) // Flipped vertical
        assertTrue(variants.contains("cba/fed/ihg")) // Flipped horizontal
        //abc   gda     ihg     cfi     abc
        //def   heb     fed     beh     def
        //ghi   ifc     cba     adg     ghi
        assertTrue(variants.contains("gda/heb/ifc")) //Rotate CW once
        assertTrue(variants.contains("ihg/fed/cba")) //Rotate CW twice
        assertTrue(variants.contains("cfi/beh/adg")) //Rotate CW three times
    }

    @Test
    fun p1Split() {
        // ABCD
        // EFGH
        // IJKL
        // MNOP
        val split = Day21("").split("ABCDEFGHIJKLMNOP")
        assertTrue(split.contains("ABEF"))
        assertTrue(split.contains("CDGH"))
        assertTrue(split.contains("IJMN"))
        assertTrue(split.contains("KLOP"))
    }


}