Code coverage removal fix for single line comments (#1996)

src/goCover.ts

@@ -257,12 +257,18 @@ export function applyCodeCoverage(editor: vscode.TextEditor) {
  * @param e TextDocumentChangeEvent
  */
 export function removeCodeCoverageOnFileChange(e: vscode.TextDocumentChangeEvent) {
- if (e.document.languageId !== 'go') {
+ if (e.document.languageId !== 'go' || !e.contentChanges.length || !isCoverageApplied) {
  return;
  }
+
  if (vscode.window.visibleTextEditors.every(editor => editor.document !== e.document)) {
  return;
  }
+
+ if (isPartOfComment(e)) {
+ return;
+ }
+
  clearCoverage();
 }
 
@@ -305,3 +311,17 @@ export function toggleCoverageCurrentPackage() {
  });
  });
 }
+
+export function isPartOfComment(e: vscode.TextDocumentChangeEvent): boolean {
+ return e.contentChanges.every(change => {
+ // We cannot be sure with using just regex on individual lines whether a multi line change is part of a comment or not
+ // So play it safe and treat it as not a comment
+ if (!change.range.isSingleLine || change.text.includes('\n')) {
+ return false;
+ }
+
+ const text = e.document.lineAt(change.range.start).text;
+ const idx = text.search('//');
+ return (idx > -1 && idx <= change.range.start.character);
+ });
+}