DSL Playground

A domain specific language for testing the text editor state
<command>          ::= <press-command> | <type> | <expect-cursor> | <expect-selection>
<type>             ::= TYPE "text"
<press-command>    ::= <press> [quantification] [with <modifiers>]
                     | <press> [with <modifiers>] [quantification]
<press>            ::= PRESS (<char> | <special-key>) | <special-key>
<expect-cursor>    ::= EXPECT cursor at <row>,<col>
<expect-selection> ::= EXPECT selection at <startRow>,<startCol>-<endRow>,<endCol>
<char>             ::= a | " " | ';' | ...
<special-key>      ::= backspace | enter | left | right | up | down
<quantification>   ::= once | N time(s) (default: once)
<modifiers>        ::= shift | meta | meta, shift

Examples in Normalized Form       →  Transpilation
TYPE "Hello"                      →  fixture.type('Hello');
PRESS a once                      →  fixture.press('a').once();
PRESS ";"                         →  fixture.press(';').once();
PRESS ' '                         →  fixture.press(' ').times(1);
enter 1 time                      →  fixture.press(Key.Enter).once();
backspace                         →  fixture.press(Key.Backspace).times(3);
left 3 times with meta            →  fixture.press(Key.ArrowLeft).withMetaKey().once();
right with meta, shift            →  fixture.press(Key.ArrowRight).withMetaKey().withShiftKey().once();
EXPECT cursor at 0,5              →  expect(fixture).toHaveCursorAt(0, 5);
EXPECT selection at 1,2-4,5       →  expect(fixture).toHaveSelectionAt(1, 2, 4, 5);

JavaScript pass-through for lines ending with ";", starting with "//" and empty lines:
expect(3+5).toBe(8);            →  expect(3+5).toBe(8);
// This is a comment            →  // This is a comment
(empty line)                    →  (empty line)