test(2019-day-03): tests for wire crossings

developher-net · developher-net · commit 93a7aeaa818e · 2019-12-13T10:52:33.000-08:00
diff --git a/2019/day-03/wires.test.js b/2019/day-03/wires.test.js
@@ -0,0 +1,30 @@
+/* eslint-env mocha */
+const expect = require('chai').expect
+const { elfWireToSVGPath, findWireIntersections } = require('./wires')
+
+describe('--- 2019 Day 3: Crossed Wires ---', () => {
+  describe('Part 1', () => {
+    describe('elfWiresToSVGPath()', () => {
+      it('converts elfwire syntax to svg path syntax', () => {
+        const wire = 'R75,D30,R83,U83,L12,D49,R71,U7,L72'
+        const expected = 'M0,0 h75 v30 h83 v-83 h-12 v49 h71 v-7 h-72'
+        const actual = elfWireToSVGPath(wire)
+        expect(actual).to.equal(expected)
+      })
+    })
+    describe('findWireIntersections()', () => {
+      it('finds the intersection points of multiple wires', () => {
+        const wires = [
+          'R8,U5,L5,D3',
+          'U7,R6,D4'
+        ]
+        const expected = [
+          [3, 3],
+          [6, 9]
+        ]
+        const actual = findWireIntersections(wires)
+        expect(actual).to.deep.equal(expected)
+      })
+    })
+  })
+})
