now has working leak detection

ts/tapbundle.classes.taptools.ts

@@ -1,6 +1,10 @@
 import * as plugins from './tapbundle.plugins'
 import { TapTest } from './tapbundle.classes.taptest'
 
+export interface IPromiseFunc {
+  (): Promise<any>
+}
+
 export class TapTools {
 
   /**
@@ -26,6 +30,10 @@ export class TapTools {
     await plugins.smartdelay.delayFor(timeMilliArg)
   }
 
+  async delayForRandom (timeMilliMinArg, timeMilliMaxArg) {
+    await plugins.smartdelay.delayForRandom(timeMilliMinArg, timeMilliMaxArg)
+  }
+
   async timeout (timeMilliArg: number) {
     let timeout = new plugins.smartdelay.Timeout(timeMilliArg)
     timeout.makeUnrefed()
@@ -35,4 +43,17 @@ export class TapTools {
     }
   }
 
+  async checkIterationLeak (iterationfuncArg: IPromiseFunc) {
+    await plugins.leakage.iterate.async(iterationfuncArg)
+  }
+
+  async returnError (throwingFuncArg: IPromiseFunc) {
+    let funcErr: Error
+    try {
+      await throwingFuncArg()
+    } catch (err) {
+      funcErr = err
+    }
+    return funcErr
+  }
 }