Add ticket-driven branch creation flow

tests/Feature/Git/GiteaProviderTest.php

@@ -58,6 +58,7 @@ class GiteaProviderTest extends TestCase
                     'name' => 'kanbangit',
                     'full_name' => 'nico/kanbangit',
                     'html_url' => 'https://git.example.test/nico/kanbangit',
+                    'default_branch' => 'main',
                     'owner' => [
                         'login' => 'nico',
                     ],
@@ -75,6 +76,7 @@ class GiteaProviderTest extends TestCase
         $this->assertContainsOnlyInstancesOf(GitRepository::class, $repositories);
         $this->assertSame('501', $repositories[0]->providerRepositoryId);
         $this->assertSame('nico/kanbangit', $repositories[0]->fullName);
+        $this->assertSame('main', $repositories[0]->defaultBranch);
         $this->assertFalse($repositories[0]->isPrivate);
 
         Http::assertSent(function ($request): bool {
@@ -83,6 +85,41 @@ class GiteaProviderTest extends TestCase
         });
     }
 
+    /**
+     * Ensure the provider can fetch a single repository with its default branch.
+     */
+    public function test_provider_can_fetch_a_single_repository(): void
+    {
+        Http::preventStrayRequests();
+        Http::fake([
+            'https://git.example.test/api/v1/repos/core-team/kanbangit' => Http::response([
+                'id' => 501,
+                'name' => 'kanbangit',
+                'full_name' => 'core-team/kanbangit',
+                'html_url' => 'https://git.example.test/core-team/kanbangit',
+                'default_branch' => 'main',
+                'owner' => [
+                    'login' => 'core-team',
+                ],
+                'private' => true,
+            ]),
+        ]);
+
+        $repository = app(GiteaProviderClient::class)->getRepository(
+            'https://git.example.test',
+            'repo-token',
+            'core-team',
+            'kanbangit',
+        );
+
+        $this->assertInstanceOf(GitRepository::class, $repository);
+        $this->assertSame('501', $repository->providerRepositoryId);
+        $this->assertSame('core-team', $repository->owner);
+        $this->assertSame('kanbangit', $repository->name);
+        $this->assertSame('main', $repository->defaultBranch);
+        $this->assertTrue($repository->isPrivate);
+    }
+
     /**
      * Ensure the provider lists branches for a specific repository.
      */
@@ -119,6 +156,38 @@ class GiteaProviderTest extends TestCase
         });
     }
 
+    /**
+     * Ensure the provider can create branches from a base reference.
+     */
+    public function test_provider_can_create_a_repository_branch(): void
+    {
+        Http::preventStrayRequests();
+        Http::fake([
+            'https://git.example.test/api/v1/repos/core-team/kanbangit/branches' => Http::response([
+                'name' => 'core-1-login-form',
+            ], 201),
+        ]);
+
+        $branch = app(GiteaProviderClient::class)->createBranch(
+            'https://git.example.test',
+            'branch-token',
+            'core-team',
+            'kanbangit',
+            'core-1-login-form',
+            'main',
+        );
+
+        $this->assertInstanceOf(GitBranch::class, $branch);
+        $this->assertSame('core-1-login-form', $branch->name);
+
+        Http::assertSent(function ($request): bool {
+            return $request->url() === 'https://git.example.test/api/v1/repos/core-team/kanbangit/branches'
+                && $request['new_branch_name'] === 'core-1-login-form'
+                && $request['old_ref_name'] === 'main'
+                && $request->hasHeader('Authorization', 'token branch-token');
+        });
+    }
+
     /**
      * Ensure the provider lists pull requests for a specific repository.
      */