Running Ruby in Zerethon IDE

What Run does with your project, the time limit, input, tests, and what a run cannot do.

Runs in Zerethon IDE · Ruby 4.0 Official Ruby documentation ↗

Run (Ctrl/⌘+Enter) runs the entry file — main.rb by default — with Ruby 4.0. Make another file the entry with the ▶ button next to it in the explorer.
Output and errors appear in the Output tab; what you type in the Input tab is the program's standard input.
A run is stopped after 10 seconds. Memory is limited, there is no network, and the project files are read-only (write to /tmp).
Run tests (Ctrl/⌘+Shift+Enter) runs every file named test_*.rb, each in its own interpreter. A test file passes when it exits with status 0, so an uncaught raise or a failing Minitest assertion fails it.

test_geometry.rb

require "minitest/autorun"
require_relative "geometry"

class GeometryTest < Minitest::Test
  def test_area
    assert_equal 6, Geometry.area(2, 3)
    assert_equal 0, Geometry.area(0, 5)
  end
end

A Minitest file for the geometry.rb module from “Several files and libraries”.

Tip: The editor highlights Ruby and completes keywords and common methods. There is no formatter or live error checking yet: Run shows Ruby's own messages.

Running Ruby in Zerethon IDE

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