chore: test promise plugin

src/__tests__/index.spec.ts

@@ -63,7 +63,7 @@ describe('.eslintrc.js suite', () => {
             {
                ruleId: 'react/jsx-pascal-case',
                severity: 1 
-            },
+            }
          ] 
       }, 
       {
@@ -155,6 +155,32 @@ describe('.eslintrc.js suite', () => {
             } 
          ]
       },
+      {
+         testName: 'promise-plugin',
+         input: [ './src/testing-files/promise-plugin' ],
+         output: [
+            {
+               ruleId: 'promise/no-new-statics',
+               severity: 2 
+            },
+            {
+               ruleId: 'promise/catch-or-return',
+               severity: 2 
+            },
+            {
+               ruleId: 'promise/no-return-wrap',
+               severity: 2 
+            },
+            {
+               ruleId: 'promise/param-names',
+               severity: 2 
+            },
+            {
+               ruleId: 'promise/no-return-in-finally',
+               severity: 1
+            }
+         ]
+      },
       {
          testName: 'jest-plugin',
          input: [ './src/testing-files/jest-plugin' ],

src/testing-files/promise-plugin/index.ts

@@ -0,0 +1,25 @@
+let myPromise = new Promise.resolve("ok")
+const doSomething = () => console.log("ok")
+const catchErrors = () => console.log("ok")
+myPromise.then(doSomething)
+myPromise.then(doSomething, catchErrors) // catch() may be a little better
+function doSomethingElse() {
+  return myPromise.then(doSomething)
+}
+
+myPromise.then(function (val: number) {
+  return Promise.resolve(val * 2)
+})
+myPromise.then(function (val: number) {
+  return Promise.reject('bad thing')
+})
+
+
+myPromise.finally(function (val) {
+  return val
+})
+
+
+new Promise(function (reject, resolve) { console.log("ok") }) // incorrect order
+new Promise(function (ok, fail) { console.log("ok")}) // non-standard parameter names
+new Promise(function (_, reject) { console.log("ok")}) // a simple underscore is not allowed