demo

#!/usr/bin/env osascript

-- Dependencies
-- python
-- pip
-- venv
-- asciinema
-- svg-term-cli

tell application "Terminal"
    activate
    delay 1
    my clearScreen(1)
    -- Ensure folder is ready and reset
    my execInput({"rm ", 27, "r ~/syrupy_example"}, 1)
    my execInput({"mkdir ", 27, "p ~/syrupy_example"}, 1)
    my execInput({"cd ~/syrupy_example"}, 1)
    -- Activate venv
    my execPythonCmd({"venv venv"}, 4)
    my execInput({"source venv/bin/activate"}, 1)
    my clearScreen(1)
    -- Start recording
    my execInput({"asciinema rec demo", 47, "cast"}, 3)
    my clearScreen(1)
    -- Install pytest and syrupy
    my execPipInstall("pytest syrupy", 2)
    -- Write initial snapshot test file
    my createTestFile()
    my execPytestVerbose()
    my execPytestSnapshotUpdate()
    -- Show generated snapshots
    my execListFiles(".")
    my execListFiles("__snapshots__")
    my readTestFileSnapshot()
    -- Modify test file
    my updateTestFile1()
    my execPytestVerbose()
    my execPytestSnapshotUpdate()
    -- Modify test file
    my updateTestFile2()
    my execPytestVerbose()
    my execPytestSnapshotUpdate()
    -- Show updated snapshots
    my readTestFileSnapshot()
    my clearScreen(1)
    -- Stop recording
    my execInput({"exit"}, 1)
    my sendInput({"cat demo", 47, "cast | svg", 27, "term "}, 1)
    my execInput({27, 27, "window ", 27, 27, "out usage_demo", 47, "svg"}, 0)
end tell

on clearScreen(wait)
    tell application "System Events"
        tell application process "Terminal"
            keystroke "k" using command down
        end tell
    end tell
    delay wait
end clearScreen

on inputDelay(n)
    delay random number from 0.003 to 0.1
end inputDelay

on sendInput(input, n)
    set inputs to {}
    repeat n times
        set inputs to inputs & input
    end repeat
    tell application "System Events"
        tell application process "Terminal"
            set frontmost to true
            repeat with input in inputs
                if class of input is integer then
                    key code input
                    my inputDelay(n)
                else
                    repeat with char in input
                        keystroke char
                        my inputDelay(n)
                    end repeat
                end if
            end repeat
        end tell
    end tell
end sendInput

on execInput(cmds, wait)
    sendInput(cmds, 1)
    tell application "System Events"
        tell application process "Terminal"
            keystroke return
        end tell
    end tell
    delay wait
end execInput

on execListFiles(folder)
    my execInput({"ls ", 27, "l ", folder}, 2)
end execListFiles

on execPythonCmd(cmd, wait)
    execInput({"python ", 27, "m "} & cmd, wait)
end execPythonCmd

on execPipInstall(packages, wait)
    my execPythonCmd({"pip install ", 27, "U ", packages}, wait)
end execPipInstall

on execPytestVerbose()
    my execPythonCmd({"pytest ", 27, "vv"}, 2)
end execPytestSnapshotUpdate

on execPytestSnapshotUpdate()
    my execPythonCmd({"pytest ", 27, 27, "snapshot", 27, "update"}, 2)
end execPytestSnapshotUpdate

on createTestFile()
    my execInput({"vim test_file", 47, "py"}, 1)
    my execInput({"i","def test_case(snapshot):"}, 1)
    my execInput({"    assert 'syrupy is amazing!' == snapshot"}, 1)
    my execInput({""}, 1)
    my execInput({"def test_other(snapshot):"}, 1)
    my execInput({"    assert 'this is amazing' == snapshot"}, 1)
    my execInput({"    assert dict(key='value', hmm=[1,2]) == snapshot"}, 1)
    my execInput({53}, 1)
    my execInput({":wq"}, 1)
end createFile

on readTestFileSnapshot()
    my execInput({"less __snapshots__/test_file", 47, "ambr"}, 3)
    my execInput({":q"}, 1)
end readTestFileSnapshot

on updateTestFile1()
    my execInput({"vim test_file", 47, "py"}, 1)
    my sendInput({125}, 4)
    my sendInput({124}, 27)
    my sendInput({"i", "!", 53}, 1)
    my execInput({":wq"}, 1)
end updateTestFile1

on updateTestFile2()
    my execInput({"vim test_file", 47, "py"}, 1)
    my sendInput({125}, 5)
    my sendInput({124}, 36)
    my sendInput({"i", 51, 51, 53}, 1)
    my execInput({":wq"}, 1)
end updateTestFile1