feat: Pass if all lines match when trimmed (#42)

Author: roerohan

src/Runner.ts

@@ -12,6 +12,7 @@ import {
 } from './models';
 import getOutput from './utils/getOutput';
 import saveCode from './utils/saveCode';
+import matchLines from './utils/matchLines';
 
 interface RunnerOpts {
     id: string;
@@ -93,7 +94,7 @@ export default class Runner {
             if (exitCode === 124) {
                 remarks = 'Time limit exceeded';
             } else if (exitCode === 0) {
-                remarks = expectedOutput.trim() === obtainedOutput.trim() ? 'Pass' : 'Fail';
+                remarks = matchLines(expectedOutput, obtainedOutput);
             } else {
                 remarks = 'Error';
             }

src/utils/matchLines.ts

@@ -0,0 +1,18 @@
+export default function matchLines(expected: string, obtained: string): 'Pass' | 'Fail' {
+    function splitAndTrim(code: string) {
+        return code.split('\n').map((sentence) => sentence.trim());
+    }
+
+    const expectedArray = splitAndTrim(expected);
+    const obtainedArray = splitAndTrim(obtained);
+
+    const minLength = Math.min(expectedArray.length, obtainedArray.length);
+
+    for (let i = 0; i < minLength; i += 1) {
+        if (expectedArray[i] !== obtainedArray[i]) {
+            return 'Fail';
+        }
+    }
+
+    return 'Pass';
+}