Module visual 

Visual regression testing for TUI applications

Provides comprehensive visual testing including color, style, and layout comparison. Unlike simple text snapshots, visual tests capture the full rendered appearance.

Features

Feature	Description
Full Render Capture	Colors, styles, and text
Diff Visualization	See exactly what changed
Threshold Testing	Allow minor variations
CI Integration	GitHub Actions, GitLab CI

Example

use revue::testing::{VisualTest, VisualTestConfig};

#[test]
fn test_button_styles() {
    let mut test = VisualTest::new("button_styles");

    // Render your widget
    let buffer = render_button();

    // Compare against golden file
    test.assert_matches(&buffer);
}

Updating Golden Files

# Update all visual tests
REVUE_UPDATE_VISUALS=1 cargo test

# Update specific test
REVUE_UPDATE_VISUALS=1 cargo test test_button_styles

Structs

CapturedCell

Captured cell data

CellDiff

Difference in a single cell

VisualCapture

Captured visual state of a buffer

VisualDiff

Difference between two captures

VisualTest

Visual regression test instance

VisualTestConfig

Configuration for visual regression tests

Enums

VisualTestResult

Result of a visual test