Update: utils.getTestInfo filter elements equal to null (fixes #37).

Author: aladdin-add

lib/utils.js

@@ -179,8 +179,8 @@ module.exports = {
         const invalidProperty = run.properties.find(prop => module.exports.getKeyName(prop) === 'invalid');
 
         return {
-          valid: validProperty && validProperty.value.type === 'ArrayExpression' ? validProperty.value.elements : null,
-          invalid: invalidProperty && invalidProperty.value.type === 'ArrayExpression' ? invalidProperty.value.elements : null,
+          valid: validProperty && validProperty.value.type === 'ArrayExpression' ? validProperty.value.elements.filter(Boolean) : [],
+          invalid: invalidProperty && invalidProperty.value.type === 'ArrayExpression' ? invalidProperty.value.elements.filter(Boolean) : [],
         };
       });
   },

tests/lib/utils.js

@@ -213,6 +213,7 @@ describe('utils', () => {
         'var foo = new RuleTester(); foo.run(bar, baz, { valid: [foo], invalid: [bar] })': { valid: 1, invalid: 1 },
         'var foo = new (require("eslint")).RuleTester; foo.run(bar, baz, { valid: [], invalid: [] })': { valid: 0, invalid: 0 },
         'var foo = new bar.RuleTester; foo.run(bar, baz, { valid: [], invalid: [bar, baz] })': { valid: 0, invalid: 2 },
+        'var foo = new bar.RuleTester; foo.run(bar, baz, { valid: [,], invalid: [bar, , baz] })': { valid: 0, invalid: 2 },
       };
 
       Object.keys(CASES).forEach(testSource => {