# sergiotoro-23/testing-java architecture

> Architecture diagram of the GitHub repository sergiotoro-23/testing-java, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-11-15). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/sergiotoro-23/testing-java
- Repository: https://github.com/sergiotoro-23/testing-java

## Overview

This repository is a small Java collection of programming exercises, not a single integrated product. Its principal demonstrated workflow is the app entry point constructing a customer lookup service, which detects an identifier format, normalizes phone numbers when needed, and asks a repository for an employee result. Separate examples cover employee data and analytics, synchronized counting, and per-user rate limiting. The app also contains employee and concurrency demo methods; the excerpt shows their calls, though not that they are run. Rate limiting is implemented but no runtime caller is shown.

Main entry points: [`src/app/App.java`](https://github.com/sergiotoro-23/testing-java/blob/main/src/app/App.java) (App), [`src/app/customerservice/CustomerService.java`](https://github.com/sergiotoro-23/testing-java/blob/main/src/app/customerservice/CustomerService.java) (Customer Service), [`src/app/customerservice/Repository.java`](https://github.com/sergiotoro-23/testing-java/blob/main/src/app/customerservice/Repository.java) (Customer Repository), [`src/app/employeeschallenge/Employee.java`](https://github.com/sergiotoro-23/testing-java/blob/main/src/app/employeeschallenge/Employee.java) (Employee Model)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_entry["Demo Entry"]
  node_app["App<br/>[App.java]"]
end

subgraph group_customer["Customer Lookup"]
  node_customer_service["Customer Service"]
  node_identifier_type["Identifier Type"]
  node_customer_repository["Customer Repository<br/>[Repository.java]"]
end

subgraph group_employees["Employee Exercises"]
  node_employee["Employee Model<br/>[Employee.java]"]
  node_sample_employees["Sample Employees"]
  node_employee_exercises["Employee Analytics"]
end

subgraph group_examples["Concurrency and Limits"]
  node_counter["Synchronized Counter"]
  node_rate_limiter["Rate Limiter<br/>[RateLimiter.java]"]
end

node_app -->|"constructs and calls"| node_customer_service
node_app -->|"constructs"| node_customer_repository
node_customer_service -->|"detects as"| node_identifier_type
node_customer_service -->|"queries by identifier"| node_customer_repository
node_customer_repository -->|"returns"| node_employee
node_app -->|"loads samples"| node_sample_employees
node_app -->|"runs analytics"| node_employee_exercises
node_sample_employees -->|"creates"| node_employee
node_employee_exercises -->|"analyzes"| node_employee
node_app -->|"increments and reads"| node_counter

click node_app "https://github.com/sergiotoro-23/testing-java/blob/main/src/app/App.java"
click node_customer_service "https://github.com/sergiotoro-23/testing-java/blob/main/src/app/customerservice/CustomerService.java"
click node_identifier_type "https://github.com/sergiotoro-23/testing-java/blob/main/src/app/customerservice/IdentifierType.java"
click node_customer_repository "https://github.com/sergiotoro-23/testing-java/blob/main/src/app/customerservice/Repository.java"
click node_employee "https://github.com/sergiotoro-23/testing-java/blob/main/src/app/employeeschallenge/Employee.java"
click node_sample_employees "https://github.com/sergiotoro-23/testing-java/blob/main/src/app/employeeschallenge/SampleEmployees.java"
click node_employee_exercises "https://github.com/sergiotoro-23/testing-java/blob/main/src/app/employeeschallenge/ExercisesEmployees.java"
click node_counter "https://github.com/sergiotoro-23/testing-java/blob/main/src/app/concurrence/CounterExerciseClass.java"
click node_rate_limiter "https://github.com/sergiotoro-23/testing-java/blob/main/src/app/ratelimit/RateLimiter.java"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_app toneBlue
class node_customer_service,node_identifier_type,node_customer_repository toneAmber
class node_employee,node_sample_employees,node_employee_exercises toneMint
class node_counter,node_rate_limiter toneRose
```

## Components

### Demo Entry

- [App](https://github.com/sergiotoro-23/testing-java/blob/main/src/app/App.java): `src/app/App.java`

### Customer Lookup

- [Customer Service](https://github.com/sergiotoro-23/testing-java/blob/main/src/app/customerservice/CustomerService.java): `src/app/customerservice/CustomerService.java`
- [Identifier Type](https://github.com/sergiotoro-23/testing-java/blob/main/src/app/customerservice/IdentifierType.java): `src/app/customerservice/IdentifierType.java`
- [Customer Repository](https://github.com/sergiotoro-23/testing-java/blob/main/src/app/customerservice/Repository.java): `src/app/customerservice/Repository.java`

### Employee Exercises

- [Employee Model](https://github.com/sergiotoro-23/testing-java/blob/main/src/app/employeeschallenge/Employee.java): `src/app/employeeschallenge/Employee.java`
- [Sample Employees](https://github.com/sergiotoro-23/testing-java/blob/main/src/app/employeeschallenge/SampleEmployees.java): `src/app/employeeschallenge/SampleEmployees.java`
- [Employee Analytics](https://github.com/sergiotoro-23/testing-java/blob/main/src/app/employeeschallenge/ExercisesEmployees.java): `src/app/employeeschallenge/ExercisesEmployees.java`

### Concurrency and Limits

- [Synchronized Counter](https://github.com/sergiotoro-23/testing-java/blob/main/src/app/concurrence/CounterExerciseClass.java): `src/app/concurrence/CounterExerciseClass.java`
- [Rate Limiter](https://github.com/sergiotoro-23/testing-java/blob/main/src/app/ratelimit/RateLimiter.java): `src/app/ratelimit/RateLimiter.java`

## Connections

- App → Customer Service: constructs and calls (evidence: `src/app/App.java`)
- App → Customer Repository: constructs (evidence: `src/app/App.java`)
- Customer Service → Identifier Type: detects as (evidence: `src/app/customerservice/CustomerService.java`)
- Customer Service → Customer Repository: queries by identifier (evidence: `src/app/customerservice/CustomerService.java`)
- Customer Repository → Employee Model: returns (evidence: `src/app/customerservice/Repository.java`)
- App → Sample Employees: loads samples (evidence: `src/app/App.java`)
- App → Employee Analytics: runs analytics (evidence: `src/app/App.java`)
- Sample Employees → Employee Model: creates (evidence: `src/app/employeeschallenge/SampleEmployees.java`)
- Employee Analytics → Employee Model: analyzes (evidence: `src/app/employeeschallenge/ExercisesEmployees.java`)
- App → Synchronized Counter: increments and reads (evidence: `src/app/App.java`)