# Getting Started

## What This Project Does
This repository is a small Java codebase centered on a single service class, `OrderService`, plus a set of test-style example classes. It looks intentionally lightweight and is useful for understanding how source layout, test annotations, and edge-case files are organized in the project.

## Recommended Reading Order
1. [Repository overview](../overview.md) — get the big-picture layout first.
2. [`OrderService`](../src/main/java/com/example/OrderService.java) — start with the main production-style class.
3. [`OrderServiceTest`](../src/test/java/com/example/OrderServiceTest.java) — see the primary test pattern.
4. [`LegacyTest`](../src/main/java/com/example/LegacyTest.java), [`RogueTestAnnotated`](../src/main/java/com/example/RogueTestAnnotated.java), and [`TestNGTest`](../src/main/java/com/example/TestNGTest.java) — compare the different test styles.
5. [`UnannotatedInTest`](../src/test/java/com/example/UnannotatedInTest.java) and [`ImportOnlyTest`](../src/utils/ImportOnlyTest.java) — review the edge cases.

## Key Entry Points
There are no highly referenced classes in the generated dependency view, so the best entry points are the classes that define the repo’s main examples:

- [`OrderService`](../src/main/java/com/example/OrderService.java) — the core service-like class.
- [`OrderServiceTest`](../src/test/java/com/example/OrderServiceTest.java) — the standard test under `src/test`.
- [`LegacyTest`](../src/main/java/com/example/LegacyTest.java) — JUnit 3-style inheritance-based test example.
- [`RogueTestAnnotated`](../src/main/java/com/example/RogueTestAnnotated.java) — test annotation used in main source.
- [`TestNGTest`](../src/main/java/com/example/TestNGTest.java) — TestNG-annotated example.
- [`TestHelper`](../src/main/java/com/example/TestHelper.java) — small supporting class.

## Project Structure
The repository is organized into a few simple source areas:

- `src/main/java/com/example/` — primary source files and test-like examples kept in main code.
- `src/test/java/com/example/` — conventional test source files.
- `src/utils/` — utility or classification edge-case files.
- `standalone/` — files outside the standard source tree, likely included for tooling or scanning scenarios.

A useful mental model is:

```mermaid
flowchart TD
Root["Repository root"] --> MainSrc["src/main/java/com/example"]
Root --> TestSrc["src/test/java/com/example"]
Root --> UtilsSrc["src/utils"]
Root --> Standalone["standalone"]

MainSrc --> OrderService["OrderService"]
MainSrc --> LegacyTest["LegacyTest"]
MainSrc --> RogueTestAnnotated["RogueTestAnnotated"]
MainSrc --> TestNGTest["TestNGTest"]
MainSrc --> TestHelper["TestHelper"]

TestSrc --> OrderServiceTest["OrderServiceTest"]
TestSrc --> UnannotatedInTest["UnannotatedInTest"]

UtilsSrc --> ImportOnlyTest["ImportOnlyTest"]
Standalone --> StandaloneTest["OrderServiceTest"]
```

## Configuration
No build files, framework configs, or dependency manifests were visible in the indexed repository view. That means there is no obvious project-level configuration to learn yet, beyond the source layout itself.

If you are onboarding, check for these files if they appear later:

- `pom.xml` or `build.gradle` — dependency and test setup
- `.gitignore` — ignored build artifacts
- `README.md` — project-specific usage notes
- CI configs such as `.github/workflows/*` — automated validation rules

## Common Patterns
A few patterns show up repeatedly in this codebase:

- **Minimal classes** — several files contain only a class declaration or a tiny method body.
- **Mixed test styles** — the repo includes JUnit 4, JUnit 3, and TestNG examples.
- **Annotation-driven detection** — some files look like tests because of annotations rather than location alone.
- **Edge-case source placement** — test-like files appear in `src/main`, `src/test`, `src/utils`, and `standalone`.
- **Small, single-purpose files** — each example seems designed to demonstrate one idea clearly.

## Where To Go Next
After this guide, read the repository overview and then inspect `OrderService` and the different test examples side by side. That will give you the fastest path to understanding both the code and the conventions used throughout the repo.