@@ -7,6 +7,23 @@ import {
77} from "../../scripts/vitest-process-group.mjs";
8899describe("vitest process group helpers", () => {
10+function getListenerSet(listeners: Map<string, Set<() => void>>, event: string) {
11+const set = listeners.get(event);
12+expect(set).toBeDefined();
13+if (!set) {
14+throw new Error(`expected ${event} listener set`);
15+}
16+return set;
17+}
18+19+function expectListenerCount(
20+listeners: Map<string, Set<() => void>>,
21+event: string,
22+count: number,
23+) {
24+expect(getListenerSet(listeners, event).size).toBe(count);
25+}
26+1027it("uses detached process groups on non-Windows hosts", () => {
1128expect(shouldUseDetachedVitestProcessGroup("darwin")).toBe(true);
1229expect(shouldUseDetachedVitestProcessGroup("linux")).toBe(true);
@@ -84,17 +101,17 @@ describe("vitest process group helpers", () => {
84101 kill,
85102});
8610387-expect(listeners.get("SIGINT")?.size).toBe(1);
88-expect(listeners.get("SIGTERM")?.size).toBe(1);
89-expect(listeners.get("exit")?.size).toBe(1);
104+expectListenerCount(listeners, "SIGINT", 1);
105+expectListenerCount(listeners, "SIGTERM", 1);
106+expectListenerCount(listeners, "exit", 1);
9010791-listeners.get("SIGTERM")?.values().next().value?.();
108+getListenerSet(listeners, "SIGTERM").values().next().value();
92109expect(kill).toHaveBeenCalledWith(-4200, "SIGTERM");
9311094111teardown();
95-expect(listeners.get("SIGINT")?.size ?? 0).toBe(0);
96-expect(listeners.get("SIGTERM")?.size ?? 0).toBe(0);
97-expect(listeners.get("exit")?.size ?? 0).toBe(0);
112+expectListenerCount(listeners, "SIGINT", 0);
113+expectListenerCount(listeners, "SIGTERM", 0);
114+expectListenerCount(listeners, "exit", 0);
98115});
99116100117it("raises process listener limits for highly parallel cleanup handlers", () => {
@@ -134,8 +151,8 @@ describe("vitest process group helpers", () => {
134151for (const teardown of teardowns) {
135152teardown();
136153}
137-expect(listeners.get("SIGINT")?.size ?? 0).toBe(0);
138-expect(listeners.get("SIGTERM")?.size ?? 0).toBe(0);
139-expect(listeners.get("exit")?.size ?? 0).toBe(0);
154+expectListenerCount(listeners, "SIGINT", 0);
155+expectListenerCount(listeners, "SIGTERM", 0);
156+expectListenerCount(listeners, "exit", 0);
140157});
141158});
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