Merge pull request #4 from time-loop/Morgan-Szafranski/add-basic-tests

Author: m-szaf

src/parsingLogic.ts

@@ -55,7 +55,7 @@ function rebuildDiffsIntoCdkLog(stacks: string[]) {
 
 function separateDiffLogIntoStacks(log: string) {
   const stacks = log.split(new RegExp('(^Stack )', 'gm'));
-  if (stacks[0] === '') stacks.shift();
+  if (stacks[0] === '' || !stacks[0].startsWith('Stack')) stacks.shift();
   return stacks.map((_, i) => (i % 2 === 0 ? '' : stacks[i - 1] + stacks[i])).filter((e) => e);
 }
 

test/__snapshots__/cdkLogParser.test.ts.snap

@@ -1,7 +1,5 @@
 import { getParsedStacks, loadCdkDiffLog } from '../src/parsingLogic';
 
-test('no-op', () => {});
-
 describe('getParsedStacks', () => {
   test('should remove all non-sense changes from a service instance diff log', () => {
     const cdkDiffLogContent = loadCdkDiffLog('test/data/serviceInstanceOutput.txt');
@@ -14,4 +12,10 @@ describe('getParsedStacks', () => {
     const parsedStacks = getParsedStacks(cdkDiffLogContent);
     expect(parsedStacks).toMatchSnapshot();
   });
+
+  test('should ignore content before the first stack diff and NOT clobber the stack names', () => {
+    const cdkDiffLogContent = loadCdkDiffLog('test/data/dontClobberStackName.txt');
+    const parsedStacks = getParsedStacks(cdkDiffLogContent);
+    expect(parsedStacks).toMatchSnapshot();
+  });
 });