feat: implement getPullsDiffStat() in BitbucketService and add test f…

…or that

src/services/bitbucket/BitbucketService.spec.ts

@@ -102,10 +102,17 @@ describe('Bitbucket Service', () => {
     expect(response).toMatchObject(getRepoCommits);
   });
 
-  it('return on commit in own interface', async () => {
+  it('returns one commit in own interface', async () => {
     bitbucketNock.getApiResponse('commit', '961b3a27');
 
     const response = await service.getCommit('pypy', 'pypy', '961b3a27');
     expect(response).toMatchObject(getRepoCommit);
   });
+
+  it('returns pulls diff stat in own interface', async () => {
+    bitbucketNock.getAdditionsAndDeletions('622');
+
+    const response = await service.getPullsDiffStat('pypy', 'pypy', '622');
+    expect(response).toMatchObject({ additions: 2, deletions: 1, changes: 3 });
+  });
 });

src/services/bitbucket/BitbucketService.ts

@@ -372,7 +372,23 @@ export class BitbucketService implements IVCSService {
     throw new Error('Method not implemented yet.');
   }
 
-  // async getDiffStat(owner: string, repo: string, sha: string) {}
+  async getPullsDiffStat(owner: string, repo: string, sha: string) {
+    const diffStatData = (await this.client.pullrequests.getDiffStat({ repo_slug: repo, username: owner, pull_request_id: sha })).data;
+
+    let linesRemoved = 0,
+      linesAdded = 0;
+
+    diffStatData.values.forEach((val: { lines_removed: number; lines_added: number }) => {
+      linesRemoved += val.lines_removed;
+      linesAdded += val.lines_added;
+    });
+
+    return {
+      additions: linesAdded,
+      deletions: linesRemoved,
+      changes: linesAdded + linesRemoved,
+    };
+  }
 
   private unwrap<T>(clientPromise: Promise<Bitbucket.Response<T>>) {
     return clientPromise

src/test/helpers/bitbucketNock.ts

@@ -106,11 +106,9 @@ export class BitbucketNock {
     return BitbucketNock.get(url, params, persist).reply(200, response);
   }
 
-  getAdditionsAndDeletions(sha: string, pullRequestCommit?: boolean) {
-    let url = `${this.url}/repositories/${this.user}/${this.repoName}/diffstat/${sha}`;
-    if (pullRequestCommit) {
-      url = `${this.url}/repositories/${this.user}/${this.repoName}/pullrequests/${sha}/diffstat`;
-    }
+  getAdditionsAndDeletions(sha: string) {
+    const url = `${this.url}/repositories/${this.user}/${this.repoName}/pullrequests/${sha}/diffstat`;
+
     const params = {};
     const persist = true;
     const response = { values: [{ lines_removed: 1, lines_added: 2 }] };