Add github repo policy test

lib/code_corps/github/sync/comment/comment/comment.ex

@@ -18,7 +18,6 @@ defmodule CodeCorps.GitHub.Sync.Comment.Comment do
     GithubIssue,
     GithubRepo,
     GithubUser,
-    Project,
     Repo,
     Task,
     User

test/lib/code_corps/policy/github_repo_test.exs

@@ -0,0 +1,34 @@
+defmodule CodeCorps.Policy.GithubRepoTest do
+  use CodeCorps.PolicyCase
+
+  import CodeCorps.Policy.GithubRepo, only: [update?: 3]
+
+  alias CodeCorps.GithubRepo
+
+  describe "update?/3" do
+    test "returns true when user is adding project where they're an admin" do
+      project = insert(:project)
+      user = insert(:user)
+      insert(:project_user, project: project, user: user, role: "admin")
+      github_repo = %GithubRepo{project_id: project.id}
+
+      assert update?(user, github_repo, %{})
+    end
+
+    test "returns true when user is removing project where they're an admin" do
+      project = insert(:project)
+      user = insert(:user)
+      insert(:project_user, project: project, user: user, role: "admin")
+
+      assert update?(user, %GithubRepo{}, %{"project_id" => project.id})
+    end
+
+    test "returns false for normal user" do
+      project = insert(:project)
+      user = insert(:user)
+      github_repo = %GithubRepo{project_id: project.id}
+
+      refute update?(user, github_repo, %{})
+    end
+  end
+end