test(2019-day-02): specs for running an IntCode program

Author: developher-net

2019/day-02/intcodeParser.test.js

@@ -1,6 +1,6 @@
 /* eslint-env mocha */
 const expect = require('chai').expect
-const { step } = require('./intcodeParser')
+const { step, runProgram } = require('./intcodeParser')
 
 describe('--- 2019 Day 2: 1202 Program Alarm ---', () => {
   describe('Part 1', () => {
@@ -26,5 +26,25 @@ describe('--- 2019 Day 2: 1202 Program Alarm ---', () => {
         })
       })
     })
+    describe('runProgram()', () => {
+      it('runs through sequential steps of an intCode program', () => {
+        const testInputs = [
+          [1, 0, 0, 0, 99],
+          [2, 3, 0, 3, 99],
+          [2, 4, 4, 5, 99, 0],
+          [1, 1, 1, 4, 99, 5, 6, 0, 99]
+        ]
+        const testOutputs = [
+          [2, 0, 0, 0, 99],
+          [2, 3, 0, 6, 99],
+          [2, 4, 4, 5, 99, 9801],
+          [30, 1, 1, 4, 2, 5, 6, 0, 99]
+        ]
+        testInputs.forEach((data, idx) => {
+          runProgram(data)
+          expect(data).to.deep.equal(testOutputs[idx])
+        })
+      })
+    })
   })
 })