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feat: add anemic model detection and refactor hardcoded values (v0.9.0)
This commit is contained in:
imfozilbek
372
packages/guardian/tests/AnemicModelDetector.test.ts
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372
packages/guardian/tests/AnemicModelDetector.test.ts
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@@ -0,0 +1,372 @@
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import { describe, it, expect, beforeEach } from "vitest"
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import { AnemicModelDetector } from "../src/infrastructure/analyzers/AnemicModelDetector"
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describe("AnemicModelDetector", () => {
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let detector: AnemicModelDetector
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beforeEach(() => {
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detector = new AnemicModelDetector()
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})
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describe("detectAnemicModels", () => {
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it("should detect class with only getters and setters", () => {
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const code = `
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class Order {
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private status: string
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private total: number
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getStatus(): string {
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return this.status
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}
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setStatus(status: string): void {
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this.status = status
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}
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getTotal(): number {
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return this.total
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}
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setTotal(total: number): void {
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this.total = total
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}
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}
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`
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const violations = detector.detectAnemicModels(
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code,
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"src/domain/entities/Order.ts",
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"domain",
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)
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expect(violations).toHaveLength(1)
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expect(violations[0].className).toBe("Order")
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expect(violations[0].methodCount).toBeGreaterThan(0)
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expect(violations[0].propertyCount).toBeGreaterThan(0)
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expect(violations[0].getMessage()).toContain("Order")
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})
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it("should detect class with public setters", () => {
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const code = `
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class User {
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private email: string
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private password: string
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public setEmail(email: string): void {
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this.email = email
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}
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public getEmail(): string {
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return this.email
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}
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public setPassword(password: string): void {
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this.password = password
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}
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}
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`
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const violations = detector.detectAnemicModels(
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code,
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"src/domain/entities/User.ts",
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"domain",
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)
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expect(violations).toHaveLength(1)
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expect(violations[0].className).toBe("User")
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expect(violations[0].hasPublicSetters).toBe(true)
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})
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it("should not detect rich domain model with business logic", () => {
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const code = `
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class Order {
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private readonly id: string
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private status: OrderStatus
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private items: OrderItem[]
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public approve(): void {
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if (!this.canBeApproved()) {
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throw new Error("Cannot approve")
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}
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this.status = OrderStatus.APPROVED
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}
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public reject(reason: string): void {
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if (!this.canBeRejected()) {
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throw new Error("Cannot reject")
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}
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this.status = OrderStatus.REJECTED
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}
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public addItem(item: OrderItem): void {
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if (this.isApproved()) {
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throw new Error("Cannot modify approved order")
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}
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this.items.push(item)
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}
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public calculateTotal(): Money {
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return this.items.reduce((sum, item) => sum.add(item.getPrice()), Money.zero())
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}
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public getStatus(): OrderStatus {
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return this.status
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}
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private canBeApproved(): boolean {
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return this.status === OrderStatus.PENDING
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}
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private canBeRejected(): boolean {
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return this.status === OrderStatus.PENDING
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}
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private isApproved(): boolean {
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return this.status === OrderStatus.APPROVED
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}
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}
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`
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const violations = detector.detectAnemicModels(
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code,
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"src/domain/entities/Order.ts",
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"domain",
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)
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expect(violations).toHaveLength(0)
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})
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it("should not analyze files outside domain layer", () => {
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const code = `
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class OrderDto {
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getStatus(): string {
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return this.status
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}
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setStatus(status: string): void {
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this.status = status
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}
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}
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`
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const violations = detector.detectAnemicModels(
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code,
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"src/application/dtos/OrderDto.ts",
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"application",
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)
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expect(violations).toHaveLength(0)
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})
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it("should not analyze DTO files", () => {
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const code = `
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class UserDto {
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private email: string
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getEmail(): string {
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return this.email
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}
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setEmail(email: string): void {
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this.email = email
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}
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}
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`
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const violations = detector.detectAnemicModels(
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code,
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"src/domain/dtos/UserDto.ts",
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"domain",
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)
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expect(violations).toHaveLength(0)
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})
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it("should not analyze test files", () => {
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const code = `
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class Order {
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getStatus(): string {
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return this.status
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}
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setStatus(status: string): void {
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this.status = status
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}
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}
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`
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const violations = detector.detectAnemicModels(
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code,
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"src/domain/entities/Order.test.ts",
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"domain",
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)
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expect(violations).toHaveLength(0)
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})
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it("should detect anemic model in entities folder", () => {
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const code = `
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class Product {
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private name: string
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private price: number
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getName(): string {
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return this.name
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}
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setName(name: string): void {
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this.name = name
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}
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getPrice(): number {
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return this.price
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}
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setPrice(price: number): void {
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this.price = price
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}
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}
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`
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const violations = detector.detectAnemicModels(
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code,
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"src/domain/entities/Product.ts",
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"domain",
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)
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expect(violations).toHaveLength(1)
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expect(violations[0].className).toBe("Product")
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})
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it("should detect anemic model in aggregates folder", () => {
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const code = `
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class Customer {
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private email: string
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getEmail(): string {
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return this.email
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}
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setEmail(email: string): void {
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this.email = email
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}
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}
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`
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const violations = detector.detectAnemicModels(
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code,
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"src/domain/aggregates/customer/Customer.ts",
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"domain",
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)
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expect(violations).toHaveLength(1)
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expect(violations[0].className).toBe("Customer")
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})
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it("should not detect class with good method-to-property ratio", () => {
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const code = `
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class Account {
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private balance: number
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private isActive: boolean
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public deposit(amount: number): void {
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if (amount <= 0) throw new Error("Invalid amount")
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this.balance += amount
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}
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public withdraw(amount: number): void {
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if (amount > this.balance) throw new Error("Insufficient funds")
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this.balance -= amount
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}
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public activate(): void {
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this.isActive = true
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}
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public deactivate(): void {
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this.isActive = false
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}
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public getBalance(): number {
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return this.balance
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}
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}
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`
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const violations = detector.detectAnemicModels(
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code,
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"src/domain/entities/Account.ts",
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"domain",
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)
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expect(violations).toHaveLength(0)
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})
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it("should handle class with no properties or methods", () => {
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const code = `
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class EmptyEntity {
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}
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`
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const violations = detector.detectAnemicModels(
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code,
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"src/domain/entities/EmptyEntity.ts",
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"domain",
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)
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expect(violations).toHaveLength(0)
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})
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it("should detect multiple anemic classes in one file", () => {
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const code = `
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class Order {
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getStatus() { return this.status }
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setStatus(status: string) { this.status = status }
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}
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class Item {
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getPrice() { return this.price }
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setPrice(price: number) { this.price = price }
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}
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`
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const violations = detector.detectAnemicModels(
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code,
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"src/domain/entities/Models.ts",
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"domain",
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)
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expect(violations).toHaveLength(2)
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expect(violations[0].className).toBe("Order")
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expect(violations[1].className).toBe("Item")
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})
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it("should provide correct violation details", () => {
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const code = `
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class Payment {
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private amount: number
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private currency: string
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getAmount(): number {
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return this.amount
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}
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setAmount(amount: number): void {
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this.amount = amount
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}
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getCurrency(): string {
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return this.currency
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}
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setCurrency(currency: string): void {
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this.currency = currency
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}
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}
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`
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const violations = detector.detectAnemicModels(
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code,
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"src/domain/entities/Payment.ts",
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"domain",
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)
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expect(violations).toHaveLength(1)
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const violation = violations[0]
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expect(violation.className).toBe("Payment")
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expect(violation.filePath).toBe("src/domain/entities/Payment.ts")
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expect(violation.layer).toBe("domain")
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expect(violation.line).toBeGreaterThan(0)
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expect(violation.getMessage()).toContain("Payment")
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expect(violation.getSuggestion()).toContain("business")
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})
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})
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})
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@@ -27,6 +27,7 @@ describe("AnalyzeProject E2E", () => {
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expect(Array.isArray(result.dependencyDirectionViolations)).toBe(true)
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expect(Array.isArray(result.repositoryPatternViolations)).toBe(true)
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expect(Array.isArray(result.aggregateBoundaryViolations)).toBe(true)
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expect(Array.isArray(result.anemicModelViolations)).toBe(true)
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})
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it("should respect exclude patterns", async () => {
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@@ -65,7 +66,8 @@ describe("AnalyzeProject E2E", () => {
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result.entityExposureViolations.length +
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result.dependencyDirectionViolations.length +
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result.repositoryPatternViolations.length +
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result.aggregateBoundaryViolations.length
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result.aggregateBoundaryViolations.length +
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result.anemicModelViolations.length
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expect(totalViolations).toBeGreaterThan(0)
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})
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@@ -82,6 +84,7 @@ describe("AnalyzeProject E2E", () => {
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expect(result.entityExposureViolations.length).toBe(0)
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expect(result.dependencyDirectionViolations.length).toBe(0)
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expect(result.circularDependencyViolations.length).toBe(0)
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expect(result.anemicModelViolations.length).toBe(0)
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})
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it("should have no dependency direction violations", async () => {
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