refactor: replace deprecated request library with got

Closes #35

test/http-client.spec.ts

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2018 StApps
+ * Copyright (C) 2018-2020 StApps
  * This program is free software: you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the Free
  * Software Foundation, version 3.
@@ -17,6 +17,8 @@ import {suite, test} from '@testdeck/mocha';
 import nock from 'nock';
 import {HttpClient} from '../src/http-client';
 
+// TODO: use after each to clean up the nock (then there is no need for numerated resource links)
+
 @suite()
 export class HttpClientSpec {
 
@@ -27,6 +29,10 @@ export class HttpClientSpec {
     }).not.to.throw();
   }
 
+  async after() {
+    nock.cleanAll();
+  }
+
   @test
   async request() {
     const client = new HttpClient();
@@ -51,10 +57,7 @@ export class HttpClientSpec {
       .reply(200, 'foo');
 
     const response = await client.request({
-      body: {
-        foo: 'bar',
-      },
-      url: new URL('http://www.example.com/resource'),
+      url: new URL('http://www.example.com/resource')
     });
 
     expect(response.body).to.be.equal('foo');
@@ -63,17 +66,24 @@ export class HttpClientSpec {
   @test
   async requestWithError() {
     const client = new HttpClient();
+    let caughtErr;
 
     nock('http://www.example.com')
       .get('/resource')
       .replyWithError('foo');
 
-    return client.request({
-      body: {
-        foo: 'bar',
-      },
-      url: new URL('http://www.example.com/resource'),
-    }).should.be.rejected;
+    try {
+      await client.request({
+        body: {
+          foo: 'bar',
+        },
+        url: new URL('http://www.example.com/resource'),
+      });
+    } catch (err) {
+      caughtErr = err;
+    }
+
+    expect(caughtErr).not.to.be.undefined;
   }
 
   @test