eslint-repro

Sample repro illustrating issue with RuleTester when rule specifies options

Clone the repo, then:

npm install
yarn test

The following error will result:

Message: Output is incorrect.

Difference:

   Expected value to strictly be equal to:
  "
        // C
        // D
        class Person {
          constructor(C: string, D: string) {}
        }"
Received:
  "
        // C
        // B
        class Person {
          constructor(C: string, B: string) {}
        }"

Message:
  Output is incorrect.

Difference:

- Expected
+ Received


          // C
-         // D
+         // B
          class Person {
-           constructor(C: string, D: string) {}
+           constructor(C: string, B: string) {}
          }

The expectation is that I can return two fixing objects in an array, which I have. Both fixing objects call replaceTextRange, and as per the ESLint docs, I made sure that the ranges of each fixing object do not overlap. Still, In the first if-block, everything works and // A and A are both updated in the final output to be // C and C. However, the fixers in the second if-block don't seem to get applied.

Example:

Identifier(node) {
  if (node.name === 'A') {
    context.report({
      node,
      messageId: 'someError',
      fix(fixer) {
        return [
          fixer.replaceTextRange([9,13], '// C'),
          fixer.replaceTextRange([72,73], 'C')
        ]
      }
    });
  }
  else if (node.name === 'B') {
    context.report({
      node,
      messageId: 'someError',
      fix(fixer) {
        return [
          fixer.replaceTextRange([22,26], '// D'),
          fixer.replaceTextRange([83,84], 'D')
        ];
      }
    });
  }
}

The expectation is that the range in the source from 9:13 (which is originally '// A') will be replaced with '// C', and this indeed happens. The second fixer should ensure that the source from 22:26 (which is originally '// C') is replaced with '// D' but this doesn't happen.