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1 files changed, 70 insertions, 0 deletions

diff --git a/node_modules/tapable/lib/__tests__/Hook.js b/node_modules/tapable/lib/__tests__/Hook.js
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+++ b/node_modules/tapable/lib/__tests__/Hook.js
@@ -0,0 +1,70 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+"use strict";
+
+const SyncHook = require("../SyncHook");
+
+describe("Hook", () => {
+	it("should allow to insert hooks before others and in stages", () => {
+		const hook = new SyncHook();
+
+		const calls = [];
+		hook.tap("A", () => calls.push("A"));
+		hook.tap(
+			{
+				name: "B",
+				before: "A"
+			},
+			() => calls.push("B")
+		);
+
+		calls.length = 0;
+		hook.call();
+		expect(calls).toEqual(["B", "A"]);
+
+		hook.tap(
+			{
+				name: "C",
+				before: ["A", "B"]
+			},
+			() => calls.push("C")
+		);
+
+		calls.length = 0;
+		hook.call();
+		expect(calls).toEqual(["C", "B", "A"]);
+
+		hook.tap(
+			{
+				name: "D",
+				before: "B"
+			},
+			() => calls.push("D")
+		);
+
+		calls.length = 0;
+		hook.call();
+		expect(calls).toEqual(["C", "D", "B", "A"]);
+
+		hook.tap(
+			{
+				name: "E",
+				stage: -5
+			},
+			() => calls.push("E")
+		);
+		hook.tap(
+			{
+				name: "F",
+				stage: -3
+			},
+			() => calls.push("F")
+		);
+
+		calls.length = 0;
+		hook.call();
+		expect(calls).toEqual(["E", "F", "C", "D", "B", "A"]);
+	});
+});