test(2020-day-11): stub in tests for visibility search logic

Author: developher-net

2020/day-11/seating.js

@@ -9,6 +9,10 @@ const format = (seatMap) => {
   return seatMap.map((row) => row.join('')).join('\n')
 }
 
+const occupiedLineOfSite = ({ x, y, seatMap }) => {
+
+}
+
 const occupiedNearby = ({ x, y, seatMap }) => {
   let temp = ''
 
@@ -68,5 +72,6 @@ const update = ({ x, y, seatMap }) => {
 module.exports = {
   format,
   parse,
-  advance
+  advance,
+  occupiedLineOfSite
 }

2020/day-11/seating.test.js

@@ -1,6 +1,6 @@
 /* eslint-env mocha */
 const { expect } = require('chai')
-const { format, parse, advance } = require('./seating')
+const { format, parse, advance, occupiedLineOfSite } = require('./seating')
 
 const testData = [
 `L.LL.LL.LL
@@ -75,6 +75,68 @@ L.#.L..#..
 #.#L#L#.##`
 )
 
+const testDataPart2 = testData.slice(0, 2)
+testDataPart2.push(
+`#.LL.LL.L#
+#LLLLLL.LL
+L.L.L..L..
+LLLL.LL.LL
+L.LL.LL.LL
+L.LLLLL.LL
+..L.L.....
+LLLLLLLLL#
+#.LLLLLL.L
+#.LLLLL.L#`
+)
+testDataPart2.push(
+`#.L#.##.L#
+#L#####.LL
+L.#.#..#..
+##L#.##.##
+#.##.#L.##
+#.#####.#L
+..#.#.....
+LLL####LL#
+#.L#####.L
+#.L####.L#`
+)
+testDataPart2.push(
+`#.L#.L#.L#
+#LLLLLL.LL
+L.L.L..#..
+##LL.LL.L#
+L.LL.LL.L#
+#.LLLLL.LL
+..L.L.....
+LLLLLLLLL#
+#.LLLLL#.L
+#.L#LL#.L#`
+)
+testDataPart2.push(
+`#.L#.L#.L#
+#LLLLLL.LL
+L.L.L..#..
+##L#.#L.L#
+L.L#.#L.L#
+#.L####.LL
+..#.#.....
+LLL###LLL#
+#.LLLLL#.L
+#.L#LL#.L#`
+)
+testDataPart2.push(
+`#.L#.L#.L#
+#LLLLLL.LL
+L.L.L..#..
+##L#.#L.L#
+L.L#.LL.L#
+#.LLLL#.LL
+..#.L.....
+LLL###LLL#
+#.LLLLL#.L
+#.L#LL#.L#`
+)
+
 describe('--- Day 11: Seating System ---', () => {
   describe('Part 1', () => {
     describe('advance()', () => {
@@ -96,4 +158,57 @@ describe('--- Day 11: Seating System ---', () => {
       })
     })
   })
+  describe('Part 2', () => {
+    describe('occupiedLineOfSite()', () => {
+      it('counts the occupied seats visible in each direction', () => {
+        const data =
+`.......#.
+...#.....
+.#.......
+.........
+..#L....#
+....#....
+.........
+#........
+...#.....`
+        expect(occupiedLineOfSite({ x: 1, y: 1, seatMap: data })).to.equal(8)
+      })
+      it('cannot see occupied seats past an available seat', () => {
+        const data =
+`.............
+.L.L.#.#.#.#.
+.............`
+        expect(occupiedLineOfSite({ x: 3, y: 4, seatMap: data })).to.equal(0)
+      })
+      it('can look in all compass directions', () => {
+        const data =
+`.##.##.
+#.#.#.#
+##...##
+...L...
+##...##
+#.#.#.#
+.##.##.`
+        expect(occupiedLineOfSite({ x: 3, y: 3, seatMap: data })).to.equal(0)
+      })
+    })
+    describe('advance()', () => {
+      it('accepts visibility rules instead of proximity', () => {
+        const results = testDataPart2.map((data) => {
+          return format(
+            advance(
+              parse(data), 'visible'
+            )
+          )
+        })
+
+        for (let x = 1; x < testDataPart2.length; x++) {
+          console.debug('Step', x)
+          expect(results[x - 1]).to.equal(testDataPart2[x])
+        }
+        const finalOccupancy = (results[results.length - 1].match(/#/g) || []).length
+        expect(finalOccupancy).to.equal(26)
+      })
+    })
+  })
 })