vtermdriver is a simple wrapper around libvterm to test rendering of terminal applications.

Usage

vtermdriver wraps an terminal application while allowing the calling process to use commands to introspect terminal state and interact with the tested application.

The test software uses a socket pair passed as standard in to communicate with the test driver.

The protocol consists of zero terminated ascii commands and syncronous replies. Additionally there are notifications send to the test software.

The replies and notifications are zero terminated byte strings. Notifications start with the byte '*'. Replies start with '{' and form a valid json document.

Invocation: vtermdriver --control-via-fd0 /path/to/app/to/test [arguments]...

Commands

capture:img

Sends the current screen content as json object.

capture:all

Sends the same data as capture:img plus additional terminal state

send-to-interior:

Sends bytes to the application that is tested. The bytes to send follow the ':' and are hex encoded.

reset

Reset the terminal state.

quit

Kill the interior application (if still running) and exit.

set:auto-quit

Automatically quit if the interior application exits.

Notifications

*exited:[code]

The application has exited with exit code [code].

*bell

The appliaction triggered the terminal bell.

Json Output

{
    "version": 0,
    "cursor_column": 0,
    "cursor_row": 1,
    "cursor_blink": true,
    "cursor_shape": "block",
    "height": 24,
    "width": 80,
    "cells": [
        {
            "x": 0,
            "t": "a",
            "y": 0
        },
        {
            "x": 1,
            "t": "\u3042",
            "width": 2,
            "y": 0
        },
        {
            "x": 3,
            "t": " ",
            "y": 0
        },
        {
            "x": 4,
            "t": " ",
            "y": 0
        },
        // ...
    ],
    "lines": {
	"0": { "soft_wrapped": true },
	// ...
    }
}

License

textshell/vtermdriver

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