test: use random devserver ports

Author: jbedard

packages/angular_devkit/build_angular/src/builders/dev-server/specs/works_spec.ts

@@ -34,7 +34,7 @@ describe('Dev Server Builder', () => {
     expect(output.success).toBe(true);
 
     // When webpack-dev-server doesn't have `contentBase: false`, this will serve the repo README.
-    const response = await fetch('http://localhost:4200/README.md', {
+    const response = await fetch(`http://localhost:${output.port}/README.md`, {
       headers: {
         'Accept': 'text/html',
       },

packages/angular_devkit/build_angular/test/hello-world-app/protractor.conf.js

@@ -23,7 +23,7 @@ exports.config = {
     },
   },
   directConnect: true,
-  baseUrl: 'http://localhost:4200/',
+  baseUrl: 'http://localhost:0/',
   framework: 'jasmine',
   jasmineNodeOpts: {
     showColors: true,

packages/schematics/angular/e2e/files/protractor.conf.js.template

@@ -17,7 +17,7 @@ exports.config = {
   },
   directConnect: true,
   SELENIUM_PROMISE_MANAGER: false,
-  baseUrl: 'http://localhost:4200/',
+  baseUrl: 'http://localhost:0/',
   framework: 'jasmine',
   jasmineNodeOpts: {
     showColors: true,

tests/legacy-cli/e2e/assets/12.0-project/e2e/protractor.conf.js

@@ -14,7 +14,7 @@ exports.config = {
     browserName: 'chrome',
   },
   directConnect: true,
-  baseUrl: 'http://localhost:4200/',
+  baseUrl: 'http://localhost:0/',
   framework: 'jasmine',
   jasmineNodeOpts: {
     showColors: true,