import { EnvironmentId } from "@t3tools/contracts";import { describe, expect, it } from "vite-plus/test"; import { toggleUsageEnvironment } from "./usageEnvironmentSelection"; const a = EnvironmentId.make("a");const b = EnvironmentId.make("b");const c = EnvironmentId.make("c");const removed = EnvironmentId.make("removed");const environments = [a, b, c].map((environmentId) => ({ environmentId })); describe("usage environment selection", () => {  it("can exclude an environment from all, then select all again", () => {    const selected = toggleUsageEnvironment(null, environments, b);    expect(selected).toEqual(new Set([a, c]));    expect(toggleUsageEnvironment(selected, environments, b)).toBeNull();  });   it("can deselect the last environment", () => {    expect(toggleUsageEnvironment(new Set([a]), environments, a)).toEqual(new Set());  });   it("does not count removed IDs toward selecting all current environments", () => {    expect(toggleUsageEnvironment(new Set([a, removed]), environments, b)).toEqual(new Set([a, b]));  });   it("returns to all mode despite stale IDs when every current environment is selected", () => {    expect(toggleUsageEnvironment(new Set([a, c, removed]), environments, b)).toBeNull();  });   it("ignores a menu action for an environment that was removed", () => {    expect(toggleUsageEnvironment(new Set([a]), environments, removed)).toEqual(new Set([a]));  });   it("includes newly connected environments only in all mode", () => {    const expanded = [...environments, { environmentId: removed }];    expect(toggleUsageEnvironment(null, expanded, a)).toEqual(new Set([b, c, removed]));    expect(toggleUsageEnvironment(new Set([a, b, c]), expanded, a)).toEqual(new Set([b, c]));  });});