ci(docs-infra): rename 'upload-server' to 'preview-server'

The server no longer has files uploaded to it. Instead it is more
accurate to refer to it as dealing with "previews" of PRs.

aio/aio-builds-setup/dockerbuild/scripts-js/test/preview-server/build-verifier.spec.ts

@@ -0,0 +1,180 @@
+// Imports
+import {GithubApi} from '../../lib/common/github-api';
+import {GithubPullRequests, PullRequest} from '../../lib/common/github-pull-requests';
+import {GithubTeams} from '../../lib/common/github-teams';
+import {BuildVerifier} from '../../lib/preview-server/build-verifier';
+
+// Tests
+describe('BuildVerifier', () => {
+  const defaultConfig = {
+    allowedTeamSlugs: ['team1', 'team2'],
+    githubOrg: 'organization',
+    githubRepo: 'repo',
+    githubToken: 'githubToken',
+    secret: 'secret',
+    trustedPrLabel: 'trusted: pr-label',
+  };
+  let prs: GithubPullRequests;
+  let bv: BuildVerifier;
+
+  // Helpers
+  const createBuildVerifier = (partialConfig: Partial<typeof defaultConfig> = {}) => {
+    const cfg = {...defaultConfig, ...partialConfig} as typeof defaultConfig;
+    const api = new GithubApi(cfg.githubToken);
+    prs = new GithubPullRequests(api, cfg.githubOrg, cfg.githubRepo);
+    const teams = new GithubTeams(api, cfg.githubOrg);
+    return new BuildVerifier(prs, teams, cfg.allowedTeamSlugs, cfg.trustedPrLabel);
+  };
+
+  beforeEach(() => bv = createBuildVerifier());
+
+
+  describe('constructor()', () => {
+
+    ['githubToken', 'githubRepo', 'githubOrg', 'allowedTeamSlugs', 'trustedPrLabel'].
+      forEach(param => {
+        it(`should throw if '${param}' is missing or empty`, () => {
+          expect(() => createBuildVerifier({[param]: ''})).
+            toThrowError(`Missing or empty required parameter '${param}'!`);
+        });
+      });
+
+
+    it('should throw if \'allowedTeamSlugs\' is an empty array', () => {
+      expect(() => createBuildVerifier({allowedTeamSlugs: []})).
+        toThrowError('Missing or empty required parameter \'allowedTeamSlugs\'!');
+    });
+
+  });
+
+
+  describe('getSignificantFilesChanged', () => {
+    it('should return false if none of the fetched files match the given pattern', async () => {
+      const fetchFilesSpy = spyOn(prs, 'fetchFiles');
+      fetchFilesSpy.and.callFake(() => Promise.resolve([{filename: 'a/b/c'}, {filename: 'd/e/f'}]));
+      expect(await bv.getSignificantFilesChanged(777, /^x/)).toEqual(false);
+      expect(fetchFilesSpy).toHaveBeenCalledWith(777);
+
+      fetchFilesSpy.calls.reset();
+      expect(await bv.getSignificantFilesChanged(777, /^a/)).toEqual(true);
+      expect(fetchFilesSpy).toHaveBeenCalledWith(777);
+    });
+  });
+
+
+  describe('getPrIsTrusted()', () => {
+    const pr = 9;
+    let mockPrInfo: PullRequest;
+    let prsFetchSpy: jasmine.Spy;
+    let teamsIsMemberBySlugSpy: jasmine.Spy;
+
+    beforeEach(() => {
+      mockPrInfo = {
+        labels: [
+          {name: 'foo'},
+          {name: 'bar'},
+        ],
+        number: 9,
+        user: {login: 'username'},
+      };
+
+      prsFetchSpy = spyOn(GithubPullRequests.prototype, 'fetch').
+        and.callFake(() => Promise.resolve(mockPrInfo));
+
+      teamsIsMemberBySlugSpy = spyOn(GithubTeams.prototype, 'isMemberBySlug').
+        and.callFake(() => Promise.resolve(true));
+    });
+
+
+    it('should return a promise', done => {
+      const promise = bv.getPrIsTrusted(pr);
+      promise.then(done);   // Do not complete the test (and release the spies) synchronously
+                            // to avoid running the actual `GithubTeams#isMemberBySlug()`.
+
+      expect(promise).toEqual(jasmine.any(Promise));
+    });
+
+
+    it('should fetch the corresponding PR', done => {
+      bv.getPrIsTrusted(pr).then(() => {
+        expect(prsFetchSpy).toHaveBeenCalledWith(pr);
+        done();
+      });
+    });
+
+
+    it('should fail if fetching the PR errors', done => {
+      prsFetchSpy.and.callFake(() => Promise.reject('Test'));
+      bv.getPrIsTrusted(pr).catch(err => {
+        expect(err).toBe('Test');
+        done();
+      });
+    });
+
+
+    describe('when the PR has the "trusted PR" label', () => {
+
+      beforeEach(() => mockPrInfo.labels.push({name: 'trusted: pr-label'}));
+
+
+      it('should resolve to true', done => {
+        bv.getPrIsTrusted(pr).then(isTrusted => {
+          expect(isTrusted).toBe(true);
+          done();
+        });
+      });
+
+
+      it('should not try to verify the author\'s membership status', done => {
+        bv.getPrIsTrusted(pr).then(() => {
+          expect(teamsIsMemberBySlugSpy).not.toHaveBeenCalled();
+          done();
+        });
+      });
+
+    });
+
+
+    describe('when the PR does not have the "trusted PR" label', () => {
+
+      it('should verify the PR author\'s membership in the specified teams', done => {
+        bv.getPrIsTrusted(pr).then(() => {
+          expect(teamsIsMemberBySlugSpy).toHaveBeenCalledWith('username', ['team1', 'team2']);
+          done();
+        });
+      });
+
+
+      it('should fail if verifying membership errors', done => {
+        teamsIsMemberBySlugSpy.and.callFake(() => Promise.reject('Test'));
+        bv.getPrIsTrusted(pr).catch(err => {
+          expect(err).toBe('Test');
+          done();
+        });
+      });
+
+
+      it('should resolve to true if the PR\'s author is a member', done => {
+        teamsIsMemberBySlugSpy.and.callFake(() => Promise.resolve(true));
+
+        bv.getPrIsTrusted(pr).then(isTrusted => {
+          expect(isTrusted).toBe(true);
+          done();
+        });
+      });
+
+
+      it('should resolve to false if the PR\'s author is not a member', done => {
+        teamsIsMemberBySlugSpy.and.callFake(() => Promise.resolve(false));
+
+        bv.getPrIsTrusted(pr).then(isTrusted => {
+          expect(isTrusted).toBe(false);
+          done();
+        });
+      });
+
+    });
+
+  });
+
+});