route, form, and domain methods for updating workspace name

tests/routes/test_workspaces.py

@@ -1,3 +1,5 @@
+from flask import url_for
+
 from tests.factories import UserFactory, WorkspaceFactory
 from atst.domain.workspaces import Workspaces
 from atst.models.workspace_user import WorkspaceUser
@@ -51,3 +53,17 @@ def test_user_without_permission_has_no_add_member_link(client, user_session):
         'href="/workspaces/{}/members/new"'.format(workspace.id).encode()
         not in response.data
     )
+
+
+def test_update_workspace_name(client, user_session):
+    user = UserFactory.create()
+    workspace = WorkspaceFactory.create()
+    Workspaces._create_workspace_role(user, workspace, "admin")
+    user_session(user)
+    response = client.post(
+        url_for("workspaces.edit_workspace", workspace_id=workspace.id),
+        data={"name": "a cool new name"},
+        follow_redirects=True,
+    )
+    assert response.status_code == 200
+    assert workspace.name == "a cool new name"