# Testing

This project has two kinds of testing:

- automated unit tests with `cargo test`
- manual end-to-end checks using the fixture in this file

## Quick Start

Run automated tests:

```bash
cargo test
```

Open the manual fixture from a file:

```bash
leaf TESTING.md
```

Open it in watch mode:

```bash
leaf --watch TESTING.md
```

Open it through stdin:

```bash
cat TESTING.md | leaf
```

## Manual Coverage

Use the fixture in the `Manual Fixture` section of this file to verify the current feature set.

### Rendering

Confirm these render correctly:

- headings and TOC entries
- paragraphs with normal spacing
- bold, italic, strikethrough, inline code, and links
- blockquotes with multiple paragraphs
- unordered, loose, nested, and ordered lists
- horizontal rules
- tables with left, center, and right alignment
- fenced code blocks with language labels
- wide characters such as `東京`
- inline math formulas with `$...$`
- display math blocks with `$$...$$`

### Navigation And Search

Use these keys while viewing the fixture:

- `j`, `k`, `d`, `u` for scrolling
- `g`, `G` for top and bottom
- `t` to toggle the TOC
- `1` through `9` to jump to TOC entries
- `/` to search for `tokyo-signal`
- `n` and `N` to move through search matches

### Watch Mode

While running `leaf --watch TESTING.md`:

- edit one of the repeated search terms
- confirm the content reloads automatically
- confirm the `⟳ reloaded` indicator appears
- press `r` to force a reload manually

### Stdin Mode

While running `cat TESTING.md | leaf`:

- confirm the content matches file-backed rendering
- confirm watch mode is not available

### Startup And Error Handling

Run these checks manually:

```bash
leaf --watch
leaf /path/that/does/not/exist.md
leaf --help
```

Confirm each command exits cleanly and does not leave the terminal in raw mode or an alternate screen.

## Notes

The fixture intentionally includes repeated search terms, loose list items, ordered lists starting at non-`1` values, tables, code blocks, wide characters, and math formulas because those are easy places for terminal Markdown renderers to regress.

## Manual Fixture

Open this file in `leaf` and use the content below as the end-to-end render sample.

Search terms:

- `tokyo-signal`
- `watch-reload-marker`
- `table-edge-check`
- `unicode-width-check`

### Navigation

This section exists to populate the TOC and provide enough content for scrolling and search.

tokyo-signal appears here once.

#### Repeated Search Block

tokyo-signal appears here twice.

tokyo-signal appears here three times.

watch-reload-marker appears here once.

watch-reload-marker appears here twice.

### Paragraph Styles

Plain paragraph text should render with the default body style and spacing.

This line mixes **bold**, *italic*, ~~strikethrough~~, and `inline code` in a single paragraph.

This paragraph also includes a [link to Rust](https://www.rust-lang.org/) so link styling and the leading link marker can be checked.

### Blockquote

> This is a blockquote with *emphasis* and `inline code`.
>
> The second quoted paragraph ensures paragraph flushing still keeps the quote prefix.
>
> unicode-width-check is present here too.

### Lists

#### Unordered Tight List

- first bullet
- second bullet
- third bullet with `inline code`

#### Unordered Loose List

- first loose item

- second loose item after a blank line

- third loose item with two paragraphs

  This continuation paragraph should keep list structure without repeating the bullet.

#### Nested List

- outer one
  - inner one
  - inner two
    - deeper item
- outer two

#### Ordered List

3. item three
4. item four
5. item five

#### Ordered Loose List

7. item seven

8. item eight with a second paragraph

   This continuation paragraph should align with item eight instead of relying on the numeric marker.

### Rules

The horizontal rule below should span cleanly.

---

The document should continue normally after the rule.

### Tables

| Name | Align Left | Center | Right |
| --- | :--- | :---: | ---: |
| Alpha | left | mid | 12 |
| Beta | table-edge-check | centered | 345 |
| Tokyo | unicode-width-check 東京 | wide | 6789 |
| Tabs | tab	value | cell | 10 |

The table above is intended to check borders, alignment, tab expansion, and wide-character handling.

### Code Blocks

```rust
fn main() {
    let city = "東京";
    println!("tokyo-signal: {city}");
}
```

```bash
printf '%s\n' "watch-reload-marker"
leaf --watch TESTING.md
```

```yaml
search:
  primary: tokyo-signal
  secondary: unicode-width-check
```

### Math Inline

The Pythagorean theorem states that $a^2 + b^2 = c^2$ in a right triangle.

Einstein's famous equation $E = mc^2$ relates energy and mass.

This paragraph mixes **bold with $x^2 + y^2$** and *italic with $\alpha + \beta$* and `code` to check style interactions.

The area of a circle is $A = \pi r^2$ and its circumference is $C = 2\pi r$.

A sum $\sum_{i=1}^{n} x_i$ and an integral $\int_0^1 f(x)\,dx$ inline.

### Math Display

$$E = mc^2$$

$$x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$$

$$\sum_{n=1}^{\infty} \frac{1}{n^2} = \frac{\pi^2}{6}$$

$$\int_0^\infty e^{-x^2}\,dx = \frac{\sqrt{\pi}}{2}$$

$$\nabla \times \vec{E} = -\frac{\partial \vec{B}}{\partial t}$$

### Math in Context

#### Math in Blockquote

> Euler's identity: $e^{i\pi} + 1 = 0$
>
> As a display block:
>
> $$e^{i\pi} + 1 = 0$$

#### Math in List

- Newton's first law: $F = 0 \Rightarrow \Delta v = 0$
- Newton's second law: $F = ma$
- Gravitation: $F = G\frac{m_1 m_2}{r^2}$

1. Quadratic: $ax^2 + bx + c = 0$
2. Solution: $x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$

#### Math with Unicode Symbols

Symbols render correctly: ∀x ∈ ℝ, ∃y such that x + y = 0.

Greek letters: α β γ δ ε π σ ω and uppercase Γ Δ Σ Ω.

Superscripts and subscripts: x⁰ x¹ x² x³ x⁴ aₙ = aₙ₋₁ + aₙ₋₂.

Operators: ≤ ≥ ≠ ≈ ± × ÷ → ⇒ ⇔ ∪ ∩ ⊂ ∅ ∞.

#### LaTeX Code Block

```latex
\frac{-b \pm \sqrt{b^2 - 4ac}}{2a}
```

```latex
\sum_{n=1}^{\infty} \frac{1}{n^2} = \frac{\pi^2}{6}

\int_0^\infty e^{-x^2} dx = \frac{\sqrt{\pi}}{2}
```

```tex
\nabla \times \vec{E} = -\frac{\partial \vec{B}}{\partial t}
```

#### Dollar Sign (No Math)

This costs $5.00 and that costs $10 each.

### Mermaid Diagrams

#### Flowchart

```mermaid
graph TD
    A[Start] --> B{Decision}
    B -->|Yes| C[OK]
    B -->|No| D[Cancel]
    C --> E[End]
    D --> E
```

#### Sequence Diagram

```mermaid
sequenceDiagram
    participant U as User
    participant S as Server
    U->>S: POST /login
    S-->>U: 200 OK
```

#### Pie Chart

```mermaid
pie title Languages
    "Rust" : 65
    "TypeScript" : 20
    "Shell" : 15
```

#### Mermaid in Blockquote

> ```mermaid
> graph LR
>     A --> B
> ```

#### Mermaid in List

- First item
- Diagram:
  ```mermaid
  graph LR
      X --> Y
  ```
- Last item

### Wide Characters

These lines are here to verify width calculations:

- 東京
- café
- naïve

### Long Scroll Area

Line 01: scrolling sample
Line 02: scrolling sample
Line 03: scrolling sample
Line 04: scrolling sample
Line 05: scrolling sample
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