test: detect general fixture

test/common/detectors/generalFixture.test.js

@@ -0,0 +1,60 @@
+import { describe, expect, it } from "vitest";
+import astService from "../../../src/services/ast.service";
+import detectGeneralFixture from "../../../src/common/detectors/generalFixture";
+
+describe("GeneralFixture", () => {
+  it("should detect general fixture when some variable are unused", () => {
+    const code = `
+    describe("test", () => {
+      let user;
+      let admin;
+      let guest;
+
+beforeEach(() => {
+  user = new User("Alice", 30);
+  admin = new Admin("Bob", 40);
+  guest = new Guest("Charlie", 25);
+});
+
+test("user should have a name", () => {
+  expect(user.name).toBe("Alice");
+});
+
+test("admin should have an age", () => {
+  expect(admin.age).toBe(40);
+});
+})
+`;
+
+    const ast = astService.parseCodeToAst(code);
+    const result = detectGeneralFixture(ast);
+    expect(result).toBeDefined();
+    expect(result).toBeInstanceOf(Array);
+    expect(result).toHaveLength(1);
+  });
+  it("should not detect general fixture when some setup variable are block scoped", () => {
+    const code = `
+    describe("test", () => {
+beforeEach(() => {
+  const user = new User("Alice", 30);
+  const admin = new Admin("Bob", 40);
+  const guest = new Guest("Charlie", 25);
+});
+
+test("user should have a name", () => {
+  expect(user.name).toBe("Alice");
+});
+
+test("admin should have an age", () => {
+  expect(admin.age).toBe(40);
+});
+})
+`;
+
+    const ast = astService.parseCodeToAst(code);
+    const result = detectGeneralFixture(ast);
+    expect(result).toBeDefined();
+    expect(result).toBeInstanceOf(Array);
+    expect(result).toHaveLength(0);
+  });
+});