test: add integration tests for ChunkGraph and ChunkGroup integrity (#20772)

aryanraj45 · web-flow · commit 5310112d6b65 · 2026-04-14T14:05:36.000+03:00
diff --git a/test/configCases/chunk-graph/graph-integrity/index.js b/test/configCases/chunk-graph/graph-integrity/index.js
@@ -0,0 +1,3 @@
+it("should compile", () => {
+	expect(true).toBe(true);
+});
diff --git a/test/configCases/chunk-graph/graph-integrity/webpack.config.js b/test/configCases/chunk-graph/graph-integrity/webpack.config.js
@@ -0,0 +1,60 @@
+"use strict";
+
+/** @type {import("../../../../").Configuration} */
+module.exports = {
+	mode: "production",
+	plugins: [
+		{
+			apply: (compiler) => {
+				compiler.hooks.compilation.tap("test", (compilation) => {
+					compilation.hooks.optimize.tap("test", () => {
+						const { chunkGraph } = compilation;
+						const [chunk] = compilation.chunks;
+						const modules = chunkGraph.getChunkModules(chunk);
+
+						if (modules.length === 0) {
+							throw new Error("No modules found in chunk");
+						}
+
+						const m = modules[0];
+						const mock = {
+							identifier: () => "mock-module",
+							getSourceTypes: () => ["javascript"],
+							size: () => 0
+						};
+
+						// @ts-expect-error for tests
+						chunkGraph.replaceModule(m, mock);
+
+						// @ts-expect-error for tests
+						if (!chunkGraph.isModuleInChunk(mock, chunk)) {
+							throw new Error("replaceModule failed (new module missing)");
+						}
+						if (chunkGraph.isModuleInChunk(m, chunk)) {
+							throw new Error("replaceModule failed (old module remains)");
+						}
+
+						// Restore original state for downstream stats
+						// @ts-expect-error for tests
+						chunkGraph.replaceModule(mock, m);
+
+						chunkGraph.disconnectChunkAndModule(chunk, m);
+						if (chunkGraph.isModuleInChunk(m, chunk)) {
+							throw new Error("disconnectChunkAndModule failed");
+						}
+
+						chunkGraph.connectChunkAndModule(chunk, m);
+						if (!chunkGraph.isModuleInChunk(m, chunk)) {
+							throw new Error("connectChunkAndModule failed");
+						}
+
+						const [group] = compilation.chunkGroups;
+						if (group) {
+							group.getChildren();
+						}
+					});
+				});
+			}
+		}
+	]
+};

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,3 @@`
	`1`	`+it("should compile", () => {`
	`2`	`+ expect(true).toBe(true);`
	`3`	`+});`