test: add sensitive warning tests

packages/rspack/tests/Stats.test.ts

@@ -185,6 +185,9 @@ describe("Stats", () => {
 		<t> process module group map: X ms
 		<t> ensure max size fit: X ms
 
+		LOG from rspack.WarnCaseSensitiveModulesPlugin
+		<t> check case sensitive modules: X ms
+
 		LOG from rspack.buildChunkGraph
 		<t> prepare entrypoints: X ms
 		<t> process queue: X ms

packages/rspack/tests/cases/warnings/case-sensitive/index.js

@@ -0,0 +1,8 @@
+it("should return different modules with different casing", function () {
+	var a = require("./a");
+	var A = require("./A");
+	var b = require("./b/file.js");
+	var B = require("./B/file.js");
+	expect(a).not.toBe(A);
+	expect(b).not.toBe(B);
+});

packages/rspack/tests/hotCases/warnings/case-sensitive/index.js

@@ -0,0 +1,6 @@
+it("should return different modules with different casing", function () {
+	var a = require("./a");
+	var A = require("./A");
+	var b = require("./b/file.js");
+	var B = require("./B/file.js");
+});

packages/rspack/tests/hotCases/warnings/case-sensitive/warnings.js

@@ -0,0 +1,5 @@
+// expect 2 warnings
+// warning info includes user path, so it is not stable
+module.exports = [
+	"",""
+];