Chart Maker Guide

Generate charts from your test data and save them as standalone HTML files. Charts are useful for visualizing benchmark results, test metrics, or any numeric data produced during a run.

Supported chart types#

• Pie
• Bar (vertical bars)
• Line
• Area (a filled line)
• Column (horizontal bars)

Values are i32.

Single-series chart#

use seleniumbase_rs::{Chart, ChartType};# fn main() -> Result<(), seleniumbase_rs::SeleniumBaseError> {let mut chart = Chart::new("Browser Market Share", ChartType::Pie);chart.add_data_point("Chrome", 60);chart.add_data_point("Firefox", 25);chart.add_data_point("Safari", 15);chart.save("market_share.html")?;# let _ = std::fs::remove_file("market_share.html");# Ok(())# }

use seleniumbase_rs::{BaseCase, BrowserConfig};#[tokio::main]async fn main() -> Result<(), Box<dyn std::error::Error>> {    let mut sb = BaseCase::new(BrowserConfig::default()).await?;    sb.create_pie_chart("Browser Market Share").await?;    sb.add_data_point("Chrome", 60).await?;    sb.add_data_point("Firefox", 25).await?;    sb.add_data_point("Safari", 15).await?;    sb.save_chart("market_share.html").await?;    sb.quit().await?;    Ok(())}

Multi-series chart#

use seleniumbase_rs::{BaseCase, BrowserConfig};#[tokio::main]async fn main() -> Result<(), Box<dyn std::error::Error>> {    let mut sb = BaseCase::new(BrowserConfig::default()).await?;    sb.create_bar_chart("Monthly Signups").await?;    sb.add_data_point("Jan", 100).await?;    sb.add_data_point("Feb", 150).await?;    sb.add_data_point("Mar", 200).await?;    sb.add_series_to_chart("Last Year", &[        ("Jan".into(), 80),        ("Feb".into(), 120),        ("Mar".into(), 160),    ]).await?;    sb.save_chart("signups.html").await?;    sb.quit().await?;    Ok(())}

The labels come from the primary series. An extra series is matched to them by label, and a label it lacks is drawn as 0.

Output#

save_chart (and Chart::save) writes one HTML file that draws the chart with Chart.js. The file embeds the data but loads the Chart.js library from cdn.jsdelivr.net, so opening it needs internet access.

Related methods on BaseCase:

• display_chart() saves the chart to a temporary chart.html and opens it in the test’s browser, returning the path.
• extract_chart() returns the chart as a JSON string with the title, type, labels and datasets.

sbrs mkchart --file results.html writes a small fixed example chart (a Passed/Failed/Skipped bar chart) to edit by hand.

Troubleshooting#