diff --git a/lib/types/thread-permission-types.test.js b/lib/types/thread-permission-types.test.js
new file mode 100644
--- /dev/null
+++ b/lib/types/thread-permission-types.test.js
@@ -0,0 +1,95 @@
+// @flow
+
+import {
+  configurableCommunityPermissions,
+  universalCommunityPermissions,
+  userSurfacedPermissions,
+  type UserSurfacedPermission,
+  threadPermissions,
+} from './thread-permission-types.js';
+import { getRolePermissionBlobs } from '../permissions/thread-permissions.js';
+import { threadTypes } from '../types/thread-types-enum.js';
+import { deepDiff, values } from '../utils/objects.js';
+
+describe('Community Announcement Root', () => {
+  it('should find Member permissions from getRolePermissionBlobs and user-surfaced permissions to be equal', () => {
+    const { Members: membersPermissionBlob } = getRolePermissionBlobs(
+      threadTypes.COMMUNITY_ANNOUNCEMENT_ROOT,
+    );
+
+    const membersPermissionsConstructed = [
+      ...configurableCommunityPermissions[userSurfacedPermissions.ADD_MEMBERS],
+      ...configurableCommunityPermissions[
+        userSurfacedPermissions.REACT_TO_MESSAGES
+      ],
+      ...configurableCommunityPermissions[
+        userSurfacedPermissions.EDIT_MESSAGES
+      ],
+      ...universalCommunityPermissions,
+    ];
+    const membersPermissionsConstructedBlob = Object.fromEntries(
+      membersPermissionsConstructed.map(permission => [permission, true]),
+    );
+
+    expect(
+      deepDiff(membersPermissionBlob, membersPermissionsConstructedBlob),
+    ).toEqual({});
+  });
+
+  it('should find Admin permissions from getRolePermissionBlobs and user-surfaced permissions to be equal', () => {
+    const adminsPermissionBlob =
+      getRolePermissionBlobs(threadTypes.COMMUNITY_ANNOUNCEMENT_ROOT).Admins ??
+      {};
+
+    const adminsPermissionsConstructed = [
+      ...values(userSurfacedPermissions)
+        .map((permission: UserSurfacedPermission) => [
+          ...configurableCommunityPermissions[permission],
+        ])
+        .flat(),
+      ...universalCommunityPermissions,
+    ];
+
+    const adminsPermissionsConstructedBlob = Object.fromEntries(
+      adminsPermissionsConstructed.map(permission => [permission, true]),
+    );
+
+    // Context: https://phab.comm.dev/D8478#inline-55680
+    expect(
+      deepDiff(adminsPermissionBlob, adminsPermissionsConstructedBlob),
+    ).toEqual({ descendant_voiced: true });
+  });
+});
+
+describe('Community Root', () => {
+  it('should find Member permissions from getRolePermissionBlobs and user-surfaced permissions to be equal', () => {
+    const { Members: membersPermissionBlob } = getRolePermissionBlobs(
+      threadTypes.COMMUNITY_ROOT,
+    );
+
+    const membersPermissionsConstructed = [
+      ...configurableCommunityPermissions[userSurfacedPermissions.ADD_MEMBERS],
+      ...configurableCommunityPermissions[
+        userSurfacedPermissions.REACT_TO_MESSAGES
+      ],
+      ...configurableCommunityPermissions[
+        userSurfacedPermissions.EDIT_MESSAGES
+      ],
+      ...configurableCommunityPermissions[
+        userSurfacedPermissions.CREATE_AND_EDIT_CHANNELS
+      ],
+      ...configurableCommunityPermissions[
+        userSurfacedPermissions.EDIT_CALENDAR
+      ],
+      threadPermissions.VOICED,
+      ...universalCommunityPermissions,
+    ];
+    const membersPermissionsConstructedBlob = Object.fromEntries(
+      membersPermissionsConstructed.map(permission => [permission, true]),
+    );
+
+    expect(
+      deepDiff(membersPermissionBlob, membersPermissionsConstructedBlob),
+    ).toEqual({});
+  });
+});