feat(pretask): introduce new pretask functionality for setting up testing environment

ts/tapbundle.classes.pretask.ts

@@ -0,0 +1,19 @@
+import * as plugins from './tapbundle.plugins';
+import { TapTools } from './tapbundle.classes.taptools';
+
+
+export interface IPreTaskFunction {
+  (tapTools?: TapTools): Promise<any>;
+}
+
+export class PreTask {
+  public preTaskFunction: IPreTaskFunction;
+
+  constructor(preTaskFunctionArg: IPreTaskFunction) {
+    this.preTaskFunction = preTaskFunctionArg;
+  }
+
+  public async run () {
+    await this.preTaskFunction(new TapTools(null));
+  }
+}

ts/tapbundle.classes.tap.ts

@@ -1,5 +1,6 @@
 import * as plugins from './tapbundle.plugins';
 
+import { IPreTaskFunction, PreTask } from './tapbundle.classes.pretask';
 import { TapTest, ITestFunction } from './tapbundle.classes.taptest';
 import { TapWrap, ITapWrapFunction } from './tapbundle.classes.tapwrap';
 export class Tap {
@@ -25,6 +26,7 @@ export class Tap {
     }
   };
 
+  private _tapPreTasks: PreTask[] = [];
   private _tapTests: TapTest[] = [];
   private _tapTestsOnly: TapTest[] = [];
 
@@ -51,6 +53,10 @@ export class Tap {
     return localTest;
   }
 
+  public preTask (functionArg: IPreTaskFunction) {
+    this._tapPreTasks.push(new PreTask(functionArg));
+  }
+
   /**
    * wraps function
    */
@@ -82,6 +88,7 @@ export class Tap {
     // safeguard against empty test array
     if (this._tapTests.length === 0) {
       console.log('no tests specified. Ending here!');
+      // TODO: throw proper error
       return;
     }
 
@@ -93,6 +100,11 @@ export class Tap {
       concerningTests = this._tapTests;
     }
 
+    // lets run the pretasks
+    for (const preTask of this._tapPreTasks) {
+      await preTask.run();
+    }
+
     console.log(`1..${concerningTests.length}`);
     for (let testKey = 0; testKey < concerningTests.length; testKey++) {
       const currentTest = concerningTests[testKey];

ts/tapbundle.classes.taptest.ts

@@ -9,21 +9,19 @@ import { Deferred } from '@pushrocks/smartpromise';
 // interfaces
 export type TTestStatus = 'success' | 'error' | 'pending' | 'errorAfterSuccess' | 'timeout';
 
-export interface ITestFunction {
-  (tapTools?: TapTools): Promise<any>;
-}
+export type ITestFunction = (tapTools?: TapTools) => Promise<any>;
 
 export class TapTest {
-  description: string;
-  failureAllowed: boolean;
-  hrtMeasurement: HrtMeasurement;
-  parallel: boolean;
-  status: TTestStatus;
-  tapTools: TapTools;
-  testFunction: ITestFunction;
-  testKey: number; // the testKey the position in the test qeue. Set upon calling .run()
-  testDeferred: Deferred<TapTest> = plugins.smartpromise.defer();
-  testPromise: Promise<TapTest> = this.testDeferred.promise;
+  public description: string;
+  public failureAllowed: boolean;
+  public hrtMeasurement: HrtMeasurement;
+  public parallel: boolean;
+  public status: TTestStatus;
+  public tapTools: TapTools;
+  public testFunction: ITestFunction;
+  public testKey: number; // the testKey the position in the test qeue. Set upon calling .run()
+  public testDeferred: Deferred<TapTest> = plugins.smartpromise.defer();
+  public testPromise: Promise<TapTest> = this.testDeferred.promise;
   /**
    * constructor
    */
@@ -39,10 +37,10 @@ export class TapTest {
   /**
    * run the test
    */
-  async run(testKeyArg: number) {
+  public async run(testKeyArg: number) {
     this.hrtMeasurement.start();
     this.testKey = testKeyArg;
-    let testNumber = testKeyArg + 1;
+    const testNumber = testKeyArg + 1;
     try {
       await this.testFunction(this.tapTools);
       if (this.status === 'timeout') {

ts/tapbundle.classes.tapwrap.ts

@@ -19,6 +19,7 @@ export class TapWrap {
    * run the wrapFunction
    */
   async run() {
+    // TODO: make sure it makes sense what we do here.
     await this.wrapFunction();
   }
 }