fix: ignore some of the examples in doc.test.js (see #3519)

Author: josdejong

src/core/function/config.js

@@ -17,7 +17,6 @@ export function configFactory (config, emit) {
    *
    * Examples:
    *
-   *
    *     import { create, all } from 'mathjs'
    *
    *     // create a mathjs instance

src/expression/parse.js

@@ -66,7 +66,7 @@ export const createParse = /* #__PURE__ */ factory(name, dependencies, ({
    *     node1.compile().evaluate() // 5
    *
    *     let scope = {a:3, b:4}
-   *     const node2 = math.parse('a * b') // 12
+   *     const node2 = math.parse('a * b')
    *     node2.evaluate(scope) // 12
    *     const code2 = node2.compile()
    *     code2.evaluate(scope) // 12

src/type/string.js

@@ -16,13 +16,13 @@ export const createString = /* #__PURE__ */ factory(name, dependencies, ({ typed
    *
    * Examples:
    *
-   *    math.string(4.2)               // returns string '4.2'
-   *    math.string(math.complex(3, 2) // returns string '3 + 2i'
+   *    math.string(4.2)                // returns string '4.2'
+   *    math.string(math.complex(3, 2)) // returns string '3 + 2i'
    *
    *    const u = math.unit(5, 'km')
-   *    math.string(u.to('m'))         // returns string '5000 m'
+   *    math.string(u.to('m'))          // returns string '5000 m'
    *
-   *    math.string([true, false])     // returns ['true', 'false']
+   *    math.string([true, false])      // returns ['true', 'false']
    *
    * See also:
    *

test/node-tests/doc.test.js

@@ -86,6 +86,10 @@ function extractValue (spec) {
   return value
 }
 
+const ignoreFunctions = new Set([
+  'config'
+])
+
 const knownProblems = new Set([
   'setUnion', 'unequal', 'equal', 'deepEqual', 'compareNatural', 'randomInt',
   'random', 'pickRandom', 'kldivergence',
@@ -97,7 +101,10 @@ const knownProblems = new Set([
   'mod', 'floor', 'fix', 'expm1', 'exp',
   'ceil', 'cbrt', 'add', 'slu',
   'rationalize', 'qr', 'lusolve', 'lup', 'derivative',
-  'symbolicEqual', 'schur', 'sylvester', 'freqz', 'round'
+  'symbolicEqual', 'schur', 'sylvester', 'freqz', 'round',
+  'import', 'typed',
+  'unit', 'sparse', 'matrix', 'index', 'bignumber', 'fraction', 'complex',
+  'parse'
 ])
 
 let issueCount = 0
@@ -371,6 +378,10 @@ describe('Testing examples from (jsdoc) comments', function () {
   for (const category in byCategory) {
     describe('category: ' + category, function () {
       for (const doc of byCategory[category]) {
+        if (ignoreFunctions.has(doc.name)) {
+          continue
+        }
+
         it('satisfies ' + doc.name, function () {
           if (debug) {
             console.log(`      Testing ${doc.name} ...`) // can remove once no known failures; for now it clarifies "PLEASE RESOLVE"