fix: fix generated code coverage result percent (#1175)

* fix: fix generated code coverage result percent

* test: add UT

Author: WillieRuemmele

src/utils/coverage.ts

@@ -36,10 +36,10 @@ export const mapTestResults = <T extends Failures | Successes>(testResults: T[])
   }));
 
 export const generateCoveredLines = (cov: CodeCoverage): [number[], number[]] => {
-  const [lineCount, uncoveredLineCount] = getCoverageNumbers(cov);
+  const [lineCount] = getCoverageNumbers(cov);
   const uncoveredLines = ensureArray(cov.locationsNotCovered).map((location) => parseInt(location.line, 10));
   const minLineNumber = uncoveredLines.length ? Math.min(...uncoveredLines) : 1;
-  const lines = [...Array(lineCount + uncoveredLineCount).keys()].map((i) => i + minLineNumber);
+  const lines = [...Array(lineCount).keys()].map((i) => i + minLineNumber);
   const coveredLines = lines.filter((line) => !uncoveredLines.includes(line));
   return [uncoveredLines, coveredLines];
 };

test/utils/coverage.test.ts

@@ -8,7 +8,7 @@
 import { expect } from 'chai';
 import { ApexTestResultOutcome } from '@salesforce/apex-node';
 import { StandardColors } from '@salesforce/sf-plugins-core';
-import { coverageOutput, getCoveragePct, mapTestResults } from '../../src/utils/coverage.js';
+import { coverageOutput, generateCoveredLines, getCoveragePct, mapTestResults } from '../../src/utils/coverage.js';
 
 // methods are mutating the object instead of returning new ones
 function getSampleTestResult() {
@@ -373,6 +373,9 @@ describe('coverage utils', () => {
     it('1 uncovered of 4', () => {
       expect(getCoveragePct(getSampleTestResult().codeCoverage[0])).equal(75);
     });
+    it('will generate covered lines correctly', () => {
+      expect(generateCoveredLines(getSampleTestResult().codeCoverage[0])).to.deep.equal([[12], [13, 14, 15]]);
+    });
     it('rounds 3 uncovered out of 44 to the nearest integer', () => {
       expect(getCoveragePct(getSampleTestResult().codeCoverage[1])).equal(93);
     });